The purpose of the present invention is to provide: a rubber composition for tires which exhibit excellent processability, wet performance, wear resistance, and chipping resistance; and a tire produced using the composition. This rubber composition for tires comprises a diene-based rubber including a modified conjugated-diene rubber, silica, a silane coupling agent, and an alkyltriethoxysilane, wherein the modified conjugated-diene rubber is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the modified conjugated-diene rubber in the diene-based rubber being 25 mass% or higher.
The present invention addresses the problem of providing: a rubber composition for tires which exhibits excellent processability and gives tires exhibiting excellent rolling performance, wet performance, wear resistance, and chipping resistance; and a tire produced using the rubber composition for tires. This rubber composition for tires comprises a rubber component (A) including a modified conjugated-diene rubber (A1), silica (B), and a silane coupling agent (C), wherein the A1 is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the A1 in the A is 25 mass% or higher, and the C is 3-octanoylthio-1-propyltriethoxysilane or a polysiloxane represented by a specific average empirical formula.
Provided is a tire in which a side block 4 includes: a long block portion 41 disposed overlapping each of first and second shoulder blocks when viewed in a tire radial direction; a short block portion 42 disposed overlapping each of the second shoulder block 322 and the long block portion 41 when viewed in the tire radial direction; and an L-shaped groove 43 that penetrates the side block 4 to partition the long block portion 41 and the short block portion 42. The L-shaped groove 43 is formed by connecting a radial direction groove 431 and a circumferential direction groove 432 in an L-shape. An angle of inclination θ32 of the circumferential direction groove 432 with respect to the tire radial direction is in a range of 45° ≤ θ32 ≤ 135°.
The purpose of the present invention is to provide: a rubber composition for tires which exhibit excellent rolling performance, wet performance, wear resistance, and deterioration resistance; and a tire produced using the composition. This rubber composition for tires comprises a diene-based rubber including a modified conjugated-diene rubber, silica, a silane coupling agent, and an alkyltriethoxysilane, wherein the modified conjugated-diene rubber is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the modified conjugated-diene rubber in the diene-based rubber being 25 mass% or higher.
The present invention addresses the problem of providing: a rubber composition for tires which exhibits excellent mixability and extrudability and gives tires having excellent wet performance, snow performance, and wear resistance; and a tire produced using the rubber composition for tires. This rubber composition for tires comprises a rubber component (A) including a modified conjugated diene-based rubber (A1), silica (B), and a silane coupling agent (C), wherein the component A1 is a conjugated diene-based rubber which satisfies a specific formula and has a modifying group containing a nitrogen atom, a silicon atom, and an oxygen atom adjacent to the silicon atom, the proportion of the component A1 in the component A is 25 mass% or higher, and the component C is 3-octanoylthio-1-propyltriethoxysilane or a polysiloxane represented by a specific average compositional formula.
The purpose of the present invention is to provide: a rubber composition for tires which exhibit excellent resistance to thermal sagging, resistance to wear in circuit running, wet performance, and rolling performance; and a tire produced using the rubber composition. This rubber composition for tires comprises: a rubber component A including a modified conjugated-diene rubber A1; silica B; and a softener C comprising at least one member selected from the group consisting of thermoplastic resins and oils. The A1 is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto and accounts for 25 mass% or more of the A. The A as a whole has a glass transition temperature higher than -80°C but not higher than -45°C. The content of the B is 80-160 parts by mass per 100 parts by mass of the A. The content of the thermoplastic resin(s) is 30-80 parts by mass, excluding 80 parts by mass, per 100 parts by mass of the A, and the proportion of the thermoplastic resin(s) to the sum of the thermoplastic resin(s) and the oil(s) is 50 mass% or higher.
The purpose of the present invention is to provide: a tire rubber composition exhibiting excellent on-ice performance, on-snow performance and wet performance, and having excellent green strength; and a tire manufactured by using the tire rubber composition. The present invention relates to a tire rubber composition containing: a diene-based rubber including a modified conjugated diene-based rubber; silica; and a plasticizer, wherein the modified conjugated diene-based rubber satisfies a specific formula and has a modifying group containing a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the modified conjugated diene-based rubber in the diene-based rubber is more than 15 mass% and not more than 50 mass%, the content of silica is 30-90 parts by mass per 100 parts by mass of the diene-based rubber, and the content of the plasticizer is 30-80 parts by mass per 100 parts by mass of the diene-based rubber.
Provided is a tire with which an improvement in rough road running performance can be achieved while ensuring excellent block durability. A plurality of shoulder blocks (12) are provided in a shoulder region of a tread portion (1), a plurality of side blocks (13) are provided in a side region that is adjacent to the shoulder region on the outer side thereof in the width direction of the tire, one side block (13) is disposed in a position on the outer side, in the width direction of the tire, of a block group comprising two or more shoulder blocks (12) adjacent to one other in the circumferential direction of the tire, and if a surface comprising side surfaces of the shoulder blocks (12) included in the block group and a top surface of the side block 13 is defined as an upper layer surface, a first recessed portion (15) including a middle layer surface that is recessed by 0.2 mm or more from the upper layer surface is provided on the center side of the upper layer surface, and a second recessed portion (16) including a lower layer surface that is recessed by 0.2 mm or more from the middle layer surface is provided on the center side of the middle layer surface.
This tire comprises a pair of bead portions 10 in which a bead core 11 and a bead portion rubber 30 having a volume resistivity of less than 1×10^8 [Ω·cm] are arranged, at least one carcass layer 13 having a volume resistivity of 1×10^8 [Ω·cm] or more and spanning the pair of bead portions 10, a belt layer 14 disposed on the tire radial direction outer side of the carcass layer 13, a tread rubber 15 disposed on the tire radial direction outer side of the belt layer 14, and an electrically conductive member 50 that is formed in the shape of a sheet, has a volume resistivity of less than 1×10^8 [Ω·cm], and extends continuously from a position on a tire inner surface 25 that overlaps at least an end portion 144 of the belt layer 14 in the tire width direction to the bead portion 10, wherein an inner end portion 51, in the tire radial direction, of the electrically conductive member 50 is covered by the bead portion rubber 30 disposed in the bead portion 10, thereby making it possible for the electrical resistance of the tire to be continuously reduced.
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 9/04 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
B60C 11/00 - Tyre tread bands; Tread patterns; Anti-skid inserts
B60C 15/00 - Tyre beads, e.g. ply turn-up or overlap
B60C 15/06 - Flipper strips, fillers, or chafing strips
The tire 1 is provided with a plurality of shoulder lug grooves 311 which extend to a buttress portion beyond a ground-contact end T of the tire. In addition, the plurality of shoulder lug grooves 311 each have a protrusion 5 which protrudes from the groove bottom of the shoulder lug groove 311 and is disposed further outward in a tire width direction than the ground-contact end T of the tire. In addition, the distance D1 from the ground-contact end T of the tire to the protrusion 5 in the tire width direction is in a range of 0.02 ≤ D1/SH ≤ 0.15 with respect to the cross-sectional height SH of the tire.
Provided is a tire that can improve steering stability on snowy road surfaces and can reduce extravehicular noise. The present invention is a tire, having a designated direction for mounting onto a vehicle, wherein: an inner shoulder narrow groove 31 and a plurality of inner shoulder lug grooves 41 are formed in an inner shoulder land section 21; a narrow rib 61 is demarcated between the inner shoulder narrow groove 31 and a first main groove 11; a circumferential-direction auxiliary groove 31, a plurality of first lug grooves 42, and a plurality of first sipes 52 are formed in an inner intermediate land section 22; a narrow rib 62 is demarcated between the circumferential-direction auxiliary groove 32 and a second main groove 12; a plurality of second lug grooves 43 and a plurality of second sipes 53 are formed in a center land section 23; a plurality of third lug grooves 44 and a plurality of third sipes 54 are formed in an outer intermediate land section 24; an outer shoulder narrow groove 35 and a plurality of outer shoulder lug grooves 45 are formed in an outer shoulder land section 25; and a narrow rib 65 is demarcated between the outer shoulder narrow groove 35 and a fourth main groove 14.
Provided is a heavy-load pneumatic tire capable of maintaining or improving rolling resistance, uneven wear resistance performance, and durability, and achieving a high level of balance of the properties. In this heavy-load pneumatic tire, a tread rubber layer 10 is composed of a tread rubber formed of a rubber composition in which at most 60 parts by mass of a filler containing carbon black and silica is blended with 100 parts by mass of a rubber component containing at least 90 mass% of an isoprene-based rubber and the blending amount ratio of the carbon black and the silica in the filler is 3:2 to 1:1, a belt cushion layer 40 is composed of a belt cushion rubber formed of a rubber composition in which at most 45 parts by mass of carbon black is blended with 100 parts by mass of a rubber component containing at least 90 mass% of an isoprene-based rubber, and the hardness Hc of the tread rubber and the hardness Hb of the belt cushion rubber satisfy the relationship of 1.2≤Hc/Hb≤1.5.
Provided is a drone that comprises a lighter weight antenna and can maintain a better state of wireless communication with a passive-type IC tag installed on an object to be monitored. Also provided are a monitoring system and a monitoring method using said drone. An antenna 7 constituting a communication device 6 is a two-element patch antenna in which two antenna elements 8 are arranged side-by-side on a lower surface of a reflection plate 9. The reflection plate 9 and each antenna element 8 are formed of an aluminum alloy plate having a thickness of 3 mm or less. The reflection plate 9 is installed on the drone 1 such that a camera through-hole 9a, which is formed at a position between the antenna elements 8 in a center portion of the reflection plate 9, is positioned at a center portion of the drone 1 in plan view. The reflection plate 9 and the antenna elements 8 are visible in a field of view looking up from directly below the drone 1, and a camera device 5 disposed above the reflection plate 9 acquires image data below the drone 1 through the camera through-hole 9a.
H01Q 1/27 - Adaptation for use in or on movable bodies
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
G06K 7/10 - Methods or arrangements for sensing record carriers by corpuscular radiation
H01Q 13/08 - Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
14.
THERMOPLASTIC RESIN COMPOSITION FOR REFRIGERANT TRANSPORT HOSE, AND REFRIGERANT TRANSPORT HOSE
The present invention provides a refrigerant transport hose that exhibits good flexibility, good resistance to refrigerant permeation, and good resistance to deterioration. The thermoplastic resin composition for a refrigerant transport hose has a sea-island structure in which an elastomer is present in domain form in a matrix including a thermoplastic resin, said thermoplastic resin composition characterized by comprising 100 parts by mass of an elastomer, 30-100 parts by mass of a thermoplastic resin, and 0.5-10 parts by mass of a hydrotalcite and/or a magnesium-aluminum solid solution, wherein the thermoplastic resin includes 50-100 parts by mass of a polyamide on the basis of 100 parts by mass of the thermoplastic resin, and the elastomer includes an elastomer having a polyisobutylene skeleton.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
C08L 101/00 - Compositions of unspecified macromolecular compounds
F16L 11/06 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with homogeneous wall
Provided is a tire that makes it possible to prevent damage to a housing body while improving high-speed durability of a functional component. This tire comprises a functional component 20 having a sensor function for detecting tire information and a housing body 30 in which the functional component 20 is housed. The housing body 30 has a housing part 33 for housing the functional component 20, an opening part 34 for putting in and taking out the functional component 20, the opening part 34 being in communication with the housing part 33, and a side wall part 32 surrounding the periphery of the housing part 33. At least the side wall part 32 is made of an elastic material. The volume Vs [cm3] of the functional component 20, the volume Vc [cm3505050 ≤ 3.0.
A rubber composition for a tire according to the present invention comprises a diene-based rubber, silica, a sulfur-containing silane coupling agent, and an alkylalkoxysilane compound. A blending amount a of the silica is 80-300 parts by mass with respect to 100 parts by mass of the diene-based rubber, and a blending amount b of the sulfur-containing silane coupling agent and the blending amount c of the alkylalkoxysilane compound satisfy the expressions (1) and (2). (1): 0.03 < (b/a) < 0.06, (2): c/b ≥ 1.5
A rubber composition according to the present invention contains: (A) 100 parts by mass of a rubber component containing at least 50 parts by mass of a diene rubber; and (B) 1-200 parts by mass of a polyolefin having a melting point of 110-155°C and demonstrating either a melt mass flow rate (MFR) exceeding 6 g/10 min when measured at a temperature of 230°C and a load of 2.16 kg or a melt mass flow rate (MFR) of at least 10 g/10 min when measured at a temperature of 190°C and a load of 2.16 kg.
C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
18.
REFRIGERANT HOSE AND METHOD FOR MANUFACTURING SAME
Provided are: a refrigerant hose capable of ensuring practical durability even if a hose internal pressure of about 5-7 MPa is repeatedly applied, while avoiding an increase in diameter of a reinforcement cord; and a method for manufacturing same. A refrigerant hose 1 is manufactured by: differing fiber cords 4 having an outer diameter of 0.4-0.6 mm for a plurality of specifications; ascertaining the cutting strength at room temperature and the relationship between tensile load and elongation at 150°C of each fiber cord 4 extracted from a sample 7 of a hose molded body using the fiber cords 4 of each specification after the vulcanization of the sample 7; determining specifications of the fiber cords 4 satisfying respective standard values on the basis of a standard value of cutting strength at room temperature and a standard value of elongation during a 1.3 cN/dtex load at 150°C required of reinforcement cords 4 of the refrigerant hose 1, the ascertained relationship between the tensile load and elongation of the respective fiber cords 4, and the ascertained cutting strength at room temperature; and vulcanizing the hose molded body 7 using the fiber cords 4 of the determined specifications as the reinforcing cords 4.
The present invention provides a monitoring system and method enabling stable positioning of a drone at a position above and close to a passive IC tag installed on a marine hose when the IC tag and a communicator mounted on the drone perform wireless communication. In the present invention: a communicator 17, a pressure altimeter 22, and a laser altimeter 23 are mounted on a drone 19; the drone 19 is caused to move to a position above a marine hose 1 at an altitude of 10-20 m; the drone 19 is caused to move downward to bring the communicator 17 closer to an IC tag 11 installed on a floating marine hose 1 when the communicator 17 and the IC tag 11 perform wireless communication; the altitude of the drone 19 is calculated on the basis of laser light emitted downward from the laser altimeter 23 and reflected upward by the marine hose 1; and the drone 19 is controlled to reach an altitude enabling wireless communication between the communicator 17 and the IC tag 11 on the basis of the calculated altitude.
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
G01F 23/18 - Indicating, recording, or alarm devices actuated electrically
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
The present invention addresses the problem of providing a laminate for a tire in which an embedded transponder has exceptional communication properties and which has exceptional durability. The aforementioned problem is solved by a laminate for a tire comprising a transponder, a covering rubber layer that covers the transponder, and an adjacent rubber layer that is laminated adjacent to at least one surface of the covering rubber layer, the transponder having an IC substrate and antennas provided to both ends of the IC substrate, the linear distance between terminals of the antennas provided to the two ends of the IC substrate being 30-60 mm inclusive, the covering rubber layer containing a rubber component, carbon black, calcium carbonate, and oil and containing 1-15 parts by mass of carbon black and 1-80 parts by mass of calcium carbonate per 100 parts by mass of the rubber component, and the oil extraction amount of the covering rubber layer and the oil extraction amount of the adjacent rubber layer satisfying a prescribed relationship.
This tire rubber composition is obtained by blending 100 parts by mass of a diene rubber with 1-100 parts by mass of a rosin-modified phenolic resin having an acid value of less than 30 mg KOH/g.
This tire rubber composition is obtained by blending 100 parts by mass of a diene rubber with 1-60 parts by mass of a rosin-modified phenolic resin having an acid value of less than 30 mg KOH/g, and 30-300 parts by mass of silica having a nitrogen adsorption specific surface area of 100-300 m2/g.
Provided is a rubber composition for undertreads, which provides improved maneuvering stability and high-speed durability while ensuring good low-heat-generating properties and allows for a high level of balance among these properties. In the present invention, 3-60 parts by mass of silica having a CTAB adsorption specific surface area of 60-100 m2/g is added to 100 parts by mass of a rubber component containing 60-90 mass% of an isoprene rubber and 10-40 mass% of an unmodified butadiene rubber. As the unmodified butadiene rubber, one having a molecular weight distribution (Mw/Mn), as determined from the weight average molecular weight (Mw) and the number average molecular weight (Mn), of at most 2.8 is used.
Provided is a rubber composition for an undertread. The rubber composition can improve handling stability and high-speed durability while maintaining good low heat build-up properties, and can achieve a high level of balance between these properties. Relative to 100 parts by mass of a rubber component that contains 40 mass% to 90 mass% of an isoprene-based rubber and 10 mass% to 40 mass% of a modified butadiene rubber and/or a modified styrene-butadiene rubber, the content of silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g is 3 parts by mass to 60 parts by mass.
Provided is a tire rubber composition that maintains and improves wear resistance, wet performance, and low rolling resistance and achieves an excellent balance between these properties. The tire rubber composition has from 50 mass parts to 150 mass parts of silica and from 16 mass parts to 200 mass parts of a thermoplastic resin blended per 100 mass parts of a diene rubber that contains 50 mass% or more of isoprene rubber, and is characterized in that the thermoplastic resin is composed of aliphatic monomer-derived units and/or aromatic monomer-derived units, the aromatic proton content of the thermoplastic resin is from 0% to less than 5%, the softening point is from 80 to 160°C, and the number-average molecular weight Mn is 1100 or less.
Provided are a solid tire and a method for manufacturing the same, said solid tire comprising a two-dimensional code that is for efficiently performing quality control and traceability for each product, wherein it is possible to sufficiently ensure an effect of protecting the two-dimensional code. A solid tire 10 comprises a tread rubber layer 1 on a tread side, and a base rubber layer 2 on a rim side, wherein a two-dimensional code 11 is positioned on an outer surface S of the solid tire 10, exclusive of a base surface B that is in contact with a rim bottom surface. A plurality of layers of rubber sheets 20 are wound to form an unvulcanized tire 10X, a substrate 13 that comprises a plastic film having the two-dimensional code 11 printed thereon is adhered onto the unvulcanized tire 10X, and then the unvulcanized tire 10X that has been provided with the two-dimensional code 11 is vulcanized in a mold.
Provided are a tire, and a method for manufacturing the same, with which rubber flow of a covering layer of a transponder during vulcanization is suppressed, thereby enabling an improvement in the communication performance of the transponder. The tire comprises an annular tread portion 1 extending in a circumferential direction of the tire, a pair of side wall portions 2 disposed on both sides of the tread portion 1, and a pair of bead portions 3 disposed inward of the side wall portions 2 in a tire radial direction, a carcass layer 4 being laid between the pair of bead portions 3, and an inner liner layer 9 being disposed on a tire inner surface Ts along the carcass layer 4, wherein: a transponder 20 covered by a covering layer made of rubber is embedded inside the tire; and the transponder 20 is disposed at least 10°, in the circumferential direction of the tire, away from a position at which bulging toward the inside of the tire on an inner circumference of the tire is greatest, excluding a part where the transponder 20 is embedded, in the position in the radial direction of the tire at which the transponder 20 is disposed.
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
Provided are a tire, and a method for manufacturing the same, with which rubber flow of a covering layer of a transponder during vulcanization is suppressed, thereby enabling an improvement in the communication performance of the transponder. The tire comprises an annular tread portion extending in a circumferential direction of the tire, a pair of side wall portions disposed on both sides of the tread portion, and a pair of bead portions disposed inward of the side wall portions in a tire radial direction, a carcass layer 4 being laid between the pair of bead portions, a plurality of belt layers being disposed on an outer circumferential side of the carcass layer in the tread portion, and an inner liner layer 9 being disposed on a tire inner surface Ts along the carcass layer 4, wherein: a plurality of ridges 39 are formed at intervals on the tire inner surface Ts; a transponder 20 covered by a covering layer 23 made of rubber is embedded inside the tire; and the position of a center C of an IC chip 21 forming the transponder 20 is disposed in a region A between adjacent ridges 30.
B60C 19/00 - Tyre parts or constructions not otherwise provided for
B29C 33/02 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated heating or cooling means
B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
Provided is a tire capable of improving snow performance without impairing abrasion resistance. As grooves partitioning blocks B in a tread portion 1, provided are a pair of angled main grooves 11 extending in a zigzag manner in a tire circumferential direction and arranged on both sides of a tire equator CL, a plurality of angled inclined grooves 12 extending from the angled main grooves 11 in the direction of the tire equator CL, and inclined fine grooves 13 connecting the angled inclined grooves 12 on both sides of the tire equator CL, in which: the angled inclined grooves 12 are configured by first inclined groove portions 12a extending from the angled main grooves 11 toward the tire equator CL in an inclined manner in the tire circumferential direction and having at least one angled point, and second inclined groove portions 12b inclined in the same direction as the first inclined groove portions 12a and more on the tire circumferential direction side than the first inclined groove portions 12a, terminating without crossing the tire equator CL; the inclined fine grooves 13 are inclined in the opposite direction to the angled inclined grooves 12 and connect the midpoints of the second inclined groove portions 12b; and at least one sipe S is formed in each block B.
Provided is a tire capable of improving snow performance without impairing wear resistance. At least three bent main grooves (10) extending in a zigzag shape along the circumferential direction of the tire are provided in a tread portion (1), land portions (20) between the bent main grooves (10) are partitioned into a plurality of blocks (20B) by a plurality of lug grooves (30), a pair of sipes (40) and a pair of notch grooves (50) are provided on the tread surface of each of the plurality of blocks (20B), the pair of sipes (40) extend in the same direction with an angular difference within 10°, one end of each of the pair of sipes (40) opens into the bent main groove (10) and the other end terminates within the block (20B), the pair of notch grooves (50) extend in the same direction with an angular difference within 10°, one end of each of the pair of notch grooves (50) opens into the bent main groove (10), and the other end terminates within the block (20B).
Provided is a tire with which snow performance can be improved without impairing wear resistance. This tire is provided with, as a plurality of grooves demarcating a plurality of blocks B in a tread portion 1: a pair of bent main grooves 11 which are disposed on both sides of a tire equator CL and which have a curved shape in which circumferential groove portions 11a and width direction groove portions 11b are linked alternately in the circumferential direction of the tire; a plurality of bent inclined grooves 12 each comprising a first inclined groove portion 12a extending in a direction toward the tire equator CL from each bent main groove 11 and a second inclined groove portion 12b which extends in the same direction as the first inclined groove portion 12a and is inclined toward the circumferential direction of the tire and which terminates without crossing the tire equator CL; a plurality of shoulder lug grooves 13 extending in an extension direction of the width direction groove portions 11b toward the outside in the width direction of the tire from end portions of the width direction groove portions 11b; and transverse grooves 14 which are inclined in the opposite direction to the bent inclined grooves 12 and which connect the pair of bent main grooves 11 together. At least one sipe S is formed in each of the plurality of blocks B.
Provided are a method for producing a mold with which it is possible for individual mold pins to protrude from a tread molding surface with precision and according to design specifications, this mold, and a method for producing studded tires. The bottom sides of flange portions 7 provided partway along the longitudinal direction of individual mold pins 5 is formed as a flat surface 7b perpendicular to the axial direction of the mold pins 5, the axial length between the protruding tips 6b of the mold pins 5 and the flat surfaces 7b is set to a predetermined length L, the peripheral regions of individual pin holes 3 on a tread molding surface 2 are formed into a convex or concave shape with a flat surface 4 perpendicular to the depth direction of the pin holes 3, and the mold pins 5 are inserted into the corresponding pin holes 3 to cause the flat surfaces 7b, 4 to abut one another, thereby protruding on the tread molding surface and producing a mold 1. A studded tire is produced by driving stud pins 15 into installation holes 13 of a base tire BT produced by vulcanizing a green tire GT using this mold 1.
B29C 33/02 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated heating or cooling means
B29D 30/66 - Moulding treads on to tyre casings, e.g. non-skid treads with spikes
Provided is a rubber composition for a side tread, whereby it becomes possible to improve low heat-generating properties while retaining elongation at break and cut resistance at satisfactory levels and it also becomes possible to achieve all of these properties at high levels and in a good balance. Silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, carbon black having a CTAB adsorption specific surface area of 20 m2/g to 60 m2/g, and a sulfur-containing silane coupling agent are mixed with a diene-based rubber comprising 35% by mass to 65% by mass of an isoprene-based rubber and 35% by mass to 65% by mass of a butadiene-based rubber synthesized with a neodymium-based catalyst, in which the addition amount of silica is set at 2 parts by mass to 25 parts by mass and the total addition amount of silica and carbon black is set at 55 parts by mass or less per 100 parts by mass of the diene-based rubber, the ratio of the addition amount Ms of silica to the addition amount Mc of carbon black, i.e., Ms/Mc, is set as 0.8 or less, and the ratio of the addition amount of the sulfur-containing silane coupling agent to the addition amount of silica is set at less than 10% by mass.
Provided is a side tread rubber composition that maintains preferable hardness and tensile strength while suppressing a reduction in elongation at break over time of the rubber composition stored without vulcanization, improves low heat generation (tanδ (60°C)) and achieves these properties balanced at high levels. This composition comprises, relative to a diene rubber containing 35% by mass to 55% by mass of an isoprene rubber and 45% by mass to 65% by mass of a butadiene rubber, a silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, a carbon black having a CTAB adsorption specific surface area of 30 m2/g to 100 m2/g, a sulfur-containing silane coupling agent and a guanidine vulcanization accelerator. The amount of the silica blended relative to 100 parts by mass of the diene rubber is 5 parts by mass to 50 parts by mass inclusive, the total amount of the silica and the carbon black blended relative to 100 parts by mass of the diene rubber is less than 55 parts by mass and the ratio Ma/Ms of the amount Ma of the guanidine vulcanization accelerator relative to the amount Ms of the silica blended is 0.02 to 0.08.
Provided is a pneumatic tire that is capable of having improved high-speed durability while maintaining good uniformity. This pneumatic tire comprises: a tread portion 1; a pair of sidewall portions 2; and a pair of bead portions 3. A carcass layer 4 is provided so as to span between the pair of bead portions 3, 3. A plurality of belt layers 7 containing belt cords inclined with respect to the circumferential direction of the tire are arranged on the outer circumferential side of the carcass layer 4 in the tread portion 1. A belt cover layer 8 containing organic fiber cords C aligned in the tire circumferential direction is arranged on the outer circumferential side of the belt layer 7. The organic fiber cords C used in the belt cover layer 8 are formed of an aliphatic polyamide, and have a tensile stiffness retention ratio of at least 90%, which is the ratio of the initial tensile stiffness at 80°C to the initial tensile stiffness at 20°C, and a dry heat shrinkage rate of at most 3.5%.
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
22SA) of 100-500 m2/g and 5-50 parts by mass of a terpene phenol resin having an acid value of 30 mg KOH/g or more and a hydroxyl value of 5 mg KOH/g or more into 100 parts by mass of a diene-based rubber containing 50 parts by mass or more of a styrene-butadiene copolymer rubber having a styrene content of less than 30 mass% but not less than 5 mass%.
C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
Provided are a road surface condition determining method and a road surface condition determining device with which it is possible to determine a road surface condition on a spatial scale longer than a ground contacting length of a tire or a circumference of the tire. This road surface condition determining method includes: a first step for acquiring, over time, a signal including an acceleration, strain rate, or strain information output from sensors arranged on an inner surface of a tire when the tire is rolling along a road surface, to obtain time-series data X(t) when the tire has rotated at least twice; a second step for obtaining an autocorrelation function R(τ), with τ as time, from the time-series data X(t) obtained in the first step; a third step for extracting positive maximum values having a magnitude equal to or greater than a prescribed value, with τ>0, for the autocorrelation function R(τ) obtained in the second step; and a fourth step for determining an unevenness of the road surface using the positive maximum values extracted in the third step.
The purpose of the present invention is to provide: a rubber composition configured to make a vulcanized rubber that demonstrates excellent adhesion to a reinforcement layer having a metal surface and that has excellent wear resistance; a laminate that includes the reinforcement layer having a metal surface and that includes a rubber layer which is a vulcanized rubber of the rubber composition; and a hose. The present invention provides: a rubber composition containing, with respect to 100 parts by mass of a rubber component including chloroprene rubber, 5-14 parts by mass of silica, not more than 1.0 parts by mass of sulfur, and ethylenethiourea; a laminate including a reinforcement layer having a metal surface and a rubber layer which is a vulcanized rubber of the rubber composition; and a hose.
B32B 15/06 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of rubber
The purpose of the present invention is to provide a rubber composition having excellent extrusion processability, adhesiveness to a reinforcing material, and weather resistance. The present invention pertains to a rubber composition and a hose formed by using the same, the rubber composition comprising: a rubber component containing at least 80 mass% of an ethylene-propylene-ethylidene norbornene copolymer satisfying expression (I); magnesium oxide; carbon black; and a vulcanizing agent. Expression (I): 3.5≥EE/(EP×ENB×Mn)×106≥0.7 In expression (I), EE is the content (mol%) of an ethylene-ethylene chain structure of an ethylene-propylene-ethylidene norbornene copolymer, EP is the content (mol%) of an ethylene-propylene chain structure, ENB is the content (mass%) of ethylidene norbornene, and Mn is the number-average molecular weight.
The purpose of the present invention is to provide: a rubber composition which gives a vulcanized rubber excellent in terms of flame retardancy, ozone resistance, bloom resistance, and power-saving properties; and a conveyor belt. The present invention provides: a rubber composition for a conveyor belt, which comprises a rubber component comprising a natural rubber and a butadiene rubber in which the mass ratio of the content of the natural rubber to the content of the butadiene rubber is 30/70 to 80/20, a flame retardant comprising a bromine-based flame retardant and antimony trioxide, a hydrocarbon-based wax (W), a filler, an antioxidant comprising an amine-based antioxidant, a vulcanization accelerator, and sulfur, in which the content of the hydrocarbon-based wax (W) is 2.5 parts by mass or less per 100 parts by mass of the rubber component, the mass ratio between the content of the bromine-based flame retardant and the content of the hydrocarbon-based wax (W) is 8.0 or higher, the hydrocarbon-based wax (W) includes a hydrocarbon-based wax (w1) having a melting point of 65°C or higher, and the content of the amine-based antioxidant is 3.0 parts by mass or higher per 100 parts by mass of the rubber component; and a conveyor belt formed using the rubber composition.
The present invention limits damage to a connected pipe by adjusting length, and avoids both increases in man hours worked during assembly and increases in cost. Provided is a pipe joint fitting 10A that connects a fluid passage R and comprises a mouthpiece part 22A (first joint fitting part 12) and a hose joint part 24A (second joint fitting part 14), said pipe joint fitting 10A being provided with a joining mechanism 18 that joins the mouthpiece part 22A and the hose joint part 24A such that, when the mouthpiece part 22A and the hose joint part 24A are joined and the interiors thereof are in communication, the total length of the mouthpiece part 22A and the hose joint part 24A can be regulated. Additionally, the invention is provided with a locking mechanism 20 that locks the total length of the mouthpiece part 22A and the hose joint part 24A in the regulated state.
F16L 15/02 - Screw-threaded joints; Forms of screw-threads for such joints allowing substantial longitudinal adjustment by the use of a long screw-threaded part
F16L 15/04 - Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
F16L 33/24 - Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose
Provided are a tire body ply and a pneumatic tire with which processability of the body ply during rolling and during grooving is improved so that tire uniformity can be improved. A tire body ply 1 ha a plurality of warp strands 2 arrayed in parallel and weft strands 3 cast so as to intersect at coarse density with the warp strands 2, wherein: the warp strands 2 are organic fiber cord containing polyethylene terephthalate fiber or aramid fiber; the weft strands 3 are cotton spun yarn; the fineness of the weft strands 3 is in a range of 150-350 dtex, and the density of the weft strands 3 is in a range of 2.0 threads/50 mm to 4.0 threads/50 mm. This pneumatic tire has a belt cover layer 18 constituted from a rubber-coated strip material 10 of the body ply 1, wound spirally in the tire circumferential direction.
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
D03D 15/217 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
D03D 15/283 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
D03D 15/41 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
Provided is a tire from which a plurality of information items concerning a functional component can be easily acquired by means of a marking on the outer surface of the tire. A functional component (20) or a container (10) containing the functional component (20) is fixed on a tire inner surface (Ts), and a marking (40) is disposed on at least one side of a pair of sidewall portions (2), the marking (40) including position information regarding the position of the functional component (20) on the circumference of the tire, and one or more additional information item regarding the functional component (20).
The purpose of the present invention is to achieve excellent performance in terms of noise and vibration and wet grip. The present invention comprises: a first main groove 21, a second main groove 22, a third main groove 23, and a fourth main groove 24 that are formed such that the width of the groove closest to the outside in the tire width direction is narrower than the width of the groove closest to the inside in the tire width direction; a first land portion 31, a second land portion 32, a third land portion 33, a fourth land portion 34, and a fifth land portion 35 that are provided from the inside in the tire width direction to the outside in the tire width direction; a narrow groove 351 in the fifth land portion 35; first sipes 311 each having one end that penetrates to but does not pass through the first main groove 21; second sipes 321; third sipes 331; fourth sipes 341; fifth sipes 352 each having one end that penetrates to but does not pass through the narrow groove 351; and fifth lug grooves 353. The second sipes 321 are at least twice as numerous as the sipes 331, 341. The sipes 321, 341, 351 incline in the same direction relative to the tire width direction. The first sipes 311, the fifth sipes 352, and the fifth lug grooves 353 each have an incline in the same direction.
Provided are a tire and a tire mold capable of exhibiting excellent visibility by emphasizing the visual effects of brightness and darkness based on serrations. In a tire in which a side wall portion 2 includes a mark portion 21 and a background portion 22 surrounding the mark portion 21, and in which serrations 10 including a plurality of ridges 11 arranged in parallel are formed in either the mark portion 21 or the background portion 22, each ridge 11 includes, in a cross section orthogonal to a length direction of the ridge 11, a side wall surface 13 having a negative slope relative to a normal line L of a reference surface B on which the ridge 11 is formed, and an inclined surface 14 that is inclined relative to the reference surface B.
B60C 13/00 - Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
B29C 33/02 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated heating or cooling means
Provided are a tire and a tire mold that make it possible to emphasize the light/dark visual effect of serrations and achieve excellent visibility. A tire according to the present invention has, at a side wall part 2, an emblem part 21 and a background part 22 that surrounds the emblem part 21. One of the emblem part 21 and the background part 22 has serrations 10 that include a plurality of parallel ridges 11. Each of the ridges 11 has, in a cross-section that is orthogonal to the length direction of the ridge 11, first and second side wall surfaces 13, 14 that are at 0° or a negative gradient to a normal line L to a reference surface B on which the ridge 11 is formed, a first top surface 15 that is sloped to one side relative to the reference surface B, and a second top surface 16 that is sloped to the other side relative to the reference surface B. The first top surface 15 and the second top surface 16 are connected to each other to form a recess.
B60C 13/00 - Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
B29C 33/02 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated heating or cooling means
Provided is a tire that makes it possible to improve measurement performance with respect to tire information by enhancing the sensing accuracy of a functional component. In this tire which has provided to the rear surface of a tread part 1 thereof a functional component 20 having a sensor function to detect tire information, the functional component 20 has a contact surface 21 which comes into contact with the rear surface side of the tread part 1. When a first projection domain S0 formed by projecting said contact surface 21 onto a tread face of the tread part 1 is defined, a groove area ratio GR0 in the first projection domain S0 in a brand-new tire state falls within the range of 50.0%≤GR0≤100.0%.
A tire 1 is provided with: four main grooves that extend in the tire circumferential direction; and five rows of land sections that are defined by the four main grooves. The four main grooves 21-24 include a first shoulder main groove 21 and a first center main groove 22, both of which are disposed in one region bordered by a tire center line CL. In addition, the first shoulder main groove 21 and the first center main groove 22 are each formed in a zigzag shape that is made from long portions and short portions connected alternately. Further, the long portions in the fist center main groove 22 are inclined in a direction opposite to that of the long portions in the first shoulder main groove 21 in the tire circumferential direction.
The present invention provides a tire that makes it possible to increase the sensing sensitivity of a functional component and improve the measurement performance for tire information. Provided is a tire comprising a functional component 20 that is provided on the back surface of a tread part 1 and that has a sensor function of detecting tire information, wherein the functional component 20 has a contact surface 21 that is in contact with the back surface side of the tread part 1, and, when the tire is in a brand-new state, a groove area ratio GR0 in a first projection region S0 falls within the range of 0.0%≤GR0<50.0%, said first projection region S0 being formed by projecting the contact surface 21 onto the tread surface of the tread part 1.
Provided is a tire 1, in which a first center main groove 22 has a zigzag shape formed by alternately connecting a long-length section and a short-length section. Furthermore, a second center main groove 23 has a bent shape formed by connecting a first groove section having a circumferential length L31, a second groove section having a circumferential length L32, and a third groove section having a circumferential length L33. The circumferential lengths L31-L33 of the first to the third groove sections have a relationship of L31 > L32 ≧ L33.
A method and a system for managing a tire are provided with which intrinsic information on the tire including information on individual tire members can be stably grasped over a long period with higher certainty. Regarding a tire T produced by vulcanizing a green tire G obtained by uniting multiple kinds of tire members E including a tire member E1 obtained by cutting a continuous object L to a one-tire size, intrinsic information D on the tire T including individual pieces of information QLx on the tire members E1 is memorized in a memory unit 9 while being linked with an RFID tag 8. The RFID tag 8 is provided to the tire T so as to be not exposed on the outer surface of the tire T and to lie in a position corresponding to a specific surface mark SM disposed on the outer surface of the tire T. The RFID tag 8 is read by a tag reader 7 to acquire the intrinsic information D.
Provided is a tire in which steering stability on a dry road surface and a wet road surface is further improved. A tire 10 comprises at least four circumferential main grooves in a tread surface 14, and five land parts are partitioned and formed by the four circumferential main grooves. In a plan view of the tire, lug grooves 31 that do not open to the circumferential main grooves are provided that are formed in each of an inside shoulder land part 24 and an outside shoulder land part 32. Inclined grooves that open to a first circumferential main groove 16 have sipes formed in groove bottoms thereof. The total main groove width of circumferential main grooves included in a vehicle mounting inside region with respect to a tire equatorial plane CL as a boundary is greater than the total main groove width of circumferential main grooves included in a vehicle mounting outside region. The main groove width of the circumferential groove disposed furthest to the vehicle mounting inside is greater than the main groove width of the circumferential groove disposed furthest to the vehicle mounting outside.
Provided are a management system and method that make it possible to achieve excellent maintainability and to simply and more stably ascertain the states of individual pneumatic fenders. A pressure sensor 15a, a temperature sensor 15b, and a passive-type IC tag 11 that integrates the pressure sensor 15a and the temperature sensor 15b are activated on the basis of transmission radio waves R1 from a communicator 16 that is outside a pneumatic fender 2 on which the IC tag 11 is installed, response radio waves R2 are transmitted from the activated IC tag 11 in response to the transmission radio waves R1 and wireless communication is performed between the IC tag 11 and the communicator 16 such that the communicator 16 acquires identification information A for the IC tag 11 and detection data D1, D2 for the pressure sensor 15a and the temperature sensor 15b for when the IC tag 11 was activated, a computation device 17 identifies the individual pneumatic fender 2 on the basis of the identification information A, and the state of the pneumatic fender 2 is determined on the basis of the detection data D1, D2.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G06K 7/10 - Methods or arrangements for sensing record carriers by corpuscular radiation
54.
FERULIC ACID DECARBOXYLASE, AND METHOD FOR PRODUCING UNSATURATED HYDROCARBON COMPOUND USING SAME
It was discovered that, by using (a) FDC in which position 397 is tryptophan, position 398 is methionine, position 440 is tyrosine, and position 189 is methionine and/or (b) FDC in which position 397 is tryptophan, position 398 is methionine, position 440 is tyrosine, and position 189 is tryptophan, in combination with (c) FDC in which position 397 is histidine and position 398 is glutamine, catalytic activity relating to generation of unsaturated hydrocarbon compounds is vastly improved over that achieved using the FDC of (c) alone, and it was made possible for unsaturated hydrocarbon compounds such as butadiene to be produced at high productivity.
Provided are a large-diameter steel wire having excellent bending performance, a marine hose comprising the steel wire, and an evaluation method capable of simply and easily ascertaining the bending performance of the steel wire. A single steel wire 6w having an outer diameter of more than or equal to 5 mm is held by a pair of holders 11 that are longitudinally spaced apart by a prescribed interval L, and a tensile test is conducted. The bending performance of the steel wire 6w is evaluated on the basis of a comparison of the value of the reduction R of area of the steel wire 6w that has ruptured with a pre-set reference value Rx. The prescribed interval L is 30 mm, the tensile rate is 50 mm/min, the temperature is room temperature, and the reduction R of area (%) is a value calculated according to ((S0-S1)/S1)×100, where S0 is the cross-sectional area of the steel wire 6w before the tensile test, and S1 is the cross-sectional area of the fractured surface after the tensile test.
Provided is a tire rubber composition capable of increasing gripping force without compromising wear resistance and steering stability. In the tire rubber composition, 3-100 parts by mass of an aromatic hydrocarbon resin satisfying the conditions of expressions (1) and (2) below is blended with respect to 100 parts by mass of a diene rubber (in the expressions, Tg indicates the glass transition temperature [unit: °C], Mw indicates the weight-average molecular weight, and Mn indicates the number-average molecular weight). (1): Tg > 36×Mw/Mn+22 (2): Mw > 3000
22SA of 100 m2/g to 300 m2/g (in the expressions, Tg is the glass transition temperature (units: ºC), Mw is the weight average molecular weight, and Mn is the number average molecular weight). (1): Tg > 36 × Mw/Mn + 22 (2): Mw > 3000
Provided is a refrigerant-transporting hose excellent in flexibility, water-vapor barrier property, and heat resistance. The refrigerant-transporting hose (1) includes an outer layer (4), a reinforcement layer (3), and an inner layer (2), said hose being characterized in that the outer layer is formed from a resin composition containing 100 parts by mass of an elastomer having a polyisobutylene skeleton, 10 to 150 parts by mass of a cross-linked resin, and 2.5 to 25 parts by mass of a cross-linking agent for the elastomer having the polyisobutylene skeleton, wherein the resin composition forming the outer layer has a water-vapor permeability of 3.0 g·mm/ (m2·24h) or less.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
C08L 23/10 - Homopolymers or copolymers of propene
C08L 23/22 - Copolymers of isobutene; Butyl rubber
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
C08L 101/00 - Compositions of unspecified macromolecular compounds
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
C08L 23/10 - Homopolymers or copolymers of propene
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
C08L 101/00 - Compositions of unspecified macromolecular compounds
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
Provided are a conveyor belt that can ensure excellent impact resistance against impact from a conveyed item loaded on an upper cover rubber even when the conveyor belt is in a low-temperature state and a method for producing the same. An upper cover rubber 3 and a lower cover rubber 4 are arranged so as to sandwich a core layer 2 from above and below respectively, a breaker layer 5 is arranged between the core layer 2 and the upper cover rubber 3, the breaker layer 5 has a structure provided with a woven material 6 having warp threads 6a extending in the longitudinal direction of the belt and weft threads 6b extending in the lateral direction of the belt and an upper coat rubber layer 7 and a lower coat rubber layer 8 that cover an upper surface and a lower surface of the woven material 6, respectively. The fineness of the woven material 6 of the belt in the longitudinal direction is 26000 dtex/cm or more, the fineness of the belt in the lateral direction is 90000 dtex/cm or more, the tensile strength of the belt in the longitudinal direction is 2000 N/cm or more, the tensile strength of the belt in the lateral direction is 6000 N/cm or more, and the layer thickness of each of the upper coat rubber 7 and lower coat rubber layer 8 is 0.5 mm or more.
In the present invention, a socket is uniformly increased in thickness with minimal elongation in the axial extension regardless of the state of the socket, such that the quality with which a hose is attached to a hose coupling fitting is increased. A crimping connector 30 comprising a main connector part 32 that extends along the axial direction of a socket 14 and crimps the socket 14 in a state in which an end of a hose 2 has been inserted into an annular space S formed between an outer peripheral part of a nipple 12 of a hose joint fitting 10 and an inner peripheral part of the socket 14, and a connector-side contact part 34 that extends from one extension-direction end of the main connector part 32 to the radially inner side of the socket 14 and that can come into contact with an axial-direction end part 1404 of the socket 14 from the axial direction of the socket 14 on the side where the end part of the hose 2 is inserted is caused to move from the radially outer side of the socket 14 to the radially inner side of the socket 14 so as to crimp the socket 14 of the hose joint fitting 10.
F16L 33/207 - Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
The purpose of the present invention is to provide: a rubber composition which gives cured objects excellent in terms of elongation at rupture, hardness, and ozone resistance; and a hose. This rubber composition comprises: a rubber component comprising 40 mass% or more ethylene/propylene/unconjugated diene copolymer having a diene content of 6 mass% or higher and an ethylene-ethylene chain structure content of 35.0 mol% or higher; carbon black; and sulfur. This hose is formed using the rubber composition.
In a cross-section of the tire 1 along the tire meridian direction, a point on a side profile located at the same tire-radial-direction position as an end of the innermost layer 141 of belt layers 14 is referred to as point Au. The foot of a perpendicular from point Au to a carcass layer 13 is referred to as point Iu, and the foot of a perpendicular from a tire-maximum-width position Ac to the carcass layer is referred to as point Ic. The carcass layer 13 comprises one or more carcass plies obtained by coating carcass cords 13cc with a coating rubber 13cr. In the region ranging from point Iu to point Ic, the distance TLu [mm] between the center of the carcass cords 13cc of the innermost carcass ply 13A and the inner surface of the tire, with respect to the tire outer diameter OD [mm], is in the range of 0.00010≤TLu/OD≤0.01500.
B60C 3/04 - Tyres characterised by transverse section characterised by the relative dimensions of the section, e.g. low profile
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 13/00 - Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
In order to improve the durability of a bead portion, in a pneumatic tire (1), two end portions of a bead core (21) in the direction of width of the tire are respectively formed by vertical lines (25) extending in a radial direction of the tire; with respect to the vertical lines (25), the length CV of the vertical lines (25) is within the range of 31% or above and 45% or below relative to a core height CH; and with respect to a first layer (31a), a second layer (31b) and a third layer (31c) of the bead core (21), in every two adjacent layers (31), the number of bead wires (30) of the layer (31) located on an outer side of the tire in the radial direction is two or more than the number of bead wires (30) of the layer (31) located on an inner side of the tire in the radial direction, and the mutual offset of the bead wires (30) located at the ends of a single side in the direction of width of the tire is half of the number of bead wires (30). In the first layer (31a) and the second layer (31b) and in the second layer (31b) and the third layer (31c), the sides where the mutual offset of the bead wires (30) is half of the number of the bead wires (30) are opposite each other in the direction of width of the tire.
Provided is a tire rubber composition which is excellent in terms of wear resistance, wet performance, and low rolling resistance, for which the low rolling resistance has little temperature dependence, and which is excellent in terms of extrusion molding processability, as well. This tire rubber composition is characterized in that: 60-90 parts by mass of silica and 15-40 parts by mass of a thermoplastic resin are added to 100 parts by mass of a diene rubber containing 50-75 mass% of an end-modified SBR (A) having a weight-average molecular weight of 300,000-500,000 and a glass transition temperature of at most -50°C, 0-50 mass% of an end-modified SBR (B) having a weight-average molecular weight of at least 600,000, and 0-30 mass% of a natural rubber, and a silane coupling agent that has a mercapto structure is added thereto in a quantity that is 2-15 mass% of the mass of the silica; the total mass of the end-modified SBR (B) and the natural rubber is at least 1/3 of the mass of the end-modified SBR (A); the weight-average molecular weight of a mixture composed of the end-modified SBR (B) and the natural rubber is at least 700,000; and the average glass transition temperature of the diene rubber is at most -50°C.
C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
C08L 57/02 - Copolymers of mineral oil hydrocarbons
C08L 65/00 - Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers
In a tire 1, in a cross-sectional view in a tire meridian direction, a point Au is defined on a side profile that is at the same position in a tire radial direction as to an end portion of an innermost layer 141 of belt layers 14. Also, a distance Hu is defined in the tire radial direction, from a tire greatest width position Ac to the point Au. Also, a point Au' is defined on the side profile at a radial-direction position that is 70 [%] of the distance Hu from the tire greatest width position Ac. Also, a point An is defined on the side profile at a radial-direction position that is 35 [%] of the distance Hu from the tire greatest width position Ac. At this time, a curvature radius RP [mm] of an arc passing through the tire greatest width position Ac, the point Au', and the point An, with the tire mounted to a stipulated rim, filled to a stipulated internal pressure, and is in an unloaded state, is within a range of 0.20 ≤ RP/SH ≤ 1.80 with respect to a tire cross-sectional height SH [mm].
B60C 13/00 - Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
B60C 3/00 - Tyres characterised by transverse section
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
Provided are: a rubber product which is inhibited from decreasing in production efficiency or shapability, by reducing the number of reinforcing layers stacked in the cylindrical part, while maintaining sufficient resistance to inner pressure; and a method for producing the rubber product. A plurality of reinforcing layers 5 are coaxially arranged between an inner layer 4 and an outer layer 10 to form a cylindrical shaped object 1A and this shaped object 1A is vulcanized to produce a rubber product having a cylindrical part 3a. The reinforcing layers 5 are each composed of: cord fabric 6 obtained by arranging a large number of fiber cords 7 in parallel and giving a given adhesion treatment thereto; and coating rubber layers 9 with which both surfaces of the cord fabric 6 are coated. The reinforcing layers 5 have a bias structure in which the fiber cords 7 of each reinforcing layer 5 extend so as to cross those of the adjoining reinforcing layer 5. The cord fabric 6 is one which has a tensile strength, along the fiber cord extension direction, of 4,320 N/cm or greater and a weight of 950 g/m2 or less and which, after the given adhesion treatment, has a bending rigidity of 30 g/cm or less. The coating rubber layers 9 each have a layer thickness of 0.2-1 mm.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
B29C 70/22 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
Provided is a rubber composition for tires which is excellent in terms of wear resistance and wet performance and has excellent moldability. The rubber composition is one obtained by incorporating 50-150 parts by mass of silica and 10-80 parts by mass of a thermoplastic resin into 100 parts by mass of diene-based rubbers comprising a styrene/butadiene rubber (A), a styrene/butadiene rubber (B), and butadiene rubber, and is characterized in that the butadiene rubber and the styrene/butadiene rubber (A) are contained in amounts of 30 mass% or larger and 15-35 mass%, respectively, with respect to the diene-based rubbers, the amount of which is taken as 100 mass%, that the content of the styrene/butadiene rubber (B) is 1-2 times by mass that of the styrene/butadiene rubber (A), that the styrene/butadiene rubber (A) has a glass transition temperature of -75°C to -50°C, and that the styrene/butadiene rubber (B) has a weight-average molecular weight which is at least twice the weight-average molecular weight of the styrene/butadiene rubber (A).
Provided is a rubber composition constituted so as to achieve a balance between abrasion resistance, low rolling resistance and wet grip performance. This rubber composition contains 20-150 parts by mass of a white filler and a total of not less than 20 parts by mass and less than 50 parts by mass of a thermoplastic resin and, optionally, a plasticizer relative to 100 parts by mass of a diene-based rubber including a styrene-butadiene rubber. The thermoplastic resin accounts for 75 mass% or more of the total amount. The relationships |σbf-σaf| ≥ 4 and |tanδbf-tanδaf| ≤ 0.02 are satisfied when: the half value width of a tanδ temperature dependency curve of the rubber composition is denoted by σbf (ºC); the tanδ value at a temperature that is 90°C higher than the peak temperature at a maximum tanδ value of the rubber composition is denoted by tanδbf; the half value width of a tanδ temperature dependency curve of the rubber composition after the rubber composition is treated by being immersed in toluene and then dried is denoted by σaf (ºC); and the tanδ value at a temperature that is 90°C higher than the peak temperature at a maximum tanδ value of the treated rubber composition is denoted by tanδaf.
Provided are a functional component assembly, a tire comprising the same, and a method of assembling a functional component assembly with which, when housing a functional component in a support, it is possible to reliably fix the functional component to the support by means of a determination part, and to prevent damage to the support or the functional component. A functional component assembly 1 comprises a functional component 20 having a function of detecting the state of a tire, and a support 10 that houses the functional component 20 and is attached to a tire inner surface, wherein: a space between the support 10 and the functional component 20 is filled with an adhesive X so that at least a part of the bottom surface of the functional component 20 has a state of being fixed to the support 10; and the support 10 comprises an opening part 14 for inserting the functional component 20, and a determination part 15 which is provided at a portion different from the opening part 14 to determine the degree of filling of the adhesive X.
Provided are: a casing and cap assembly that makes it possible to improve the durability of a detector, reduces the risk of damage to both the detector and an object as a result of contact therebetween, and makes it possible to maintain a suitable wireless communication state with the detector; and a marine hose fluid leak detection system comprising the assembly. In a casing 18 in which a pressure sensor 15 and an IC tag 12 are accommodated in a pressure-holding chamber 18c formed by a substrate 18a and a radio wave-transmitting section 18b, three or more metal protruding sections 19 with spaces therebetween in a circumferential direction at outer circumference-side positions of the radio wave-transmitting section 18b in a planar view are made to protrude from the substrate 18a above the radio wave-transmitting section 18b, the top end sections of the protruding sections 19 are spaced apart from each other, and while in a state in which an annular cap 20 made from a resin or rubber covers the upper ends of each of the protruding sections 18 so as to be continuous in the circumferential direction and is fixed to the casing 18, an inner circumference-side area and an outer circumference-side area with respect to each of the protruding sections 19 communicate via a gap between the lower end sections of the protruding sections 19 adjacent in the circumferential direction.
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
This tire comprises a power reception coil that generates electric power upon reception of an AC magnetic field from the outside of the tire. The power reception coil is provided to a side part, between a tread part and a bead part, at the inner side surface facing a tire hollow region of the tire, and generates AC power upon reception of an AC magnetic field that has passed through said side part. The power reception coil has a circular shape and extends along the inner side surface so as to go around in the tire circumferential direction. When the thickness of the side part at the location, of the inner side surface, where the power reception coil is disposed is defined as Ts and the minimum thickness of the side part in the tire radial thicknesses is defined as Tmin, the ratio Ts/Tmin is 1.0-5.5.
B60C 19/00 - Tyre parts or constructions not otherwise provided for
B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
H02J 50/50 - Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
Provided is a tire configured to have improved pin slip-off resistance without causing further damage to road surfaces. The tire comprises, in a tread section 1, a hole 13 for insertion of a stud pin 20. A series of flat sections 14 provided in an annular shape so as to match the profile line of the tread section 1 exist around the hole 13. When an annular region A is defined as the region around the flat sections 14a at a distance of 4 mm to 8 mm from the center O of the hole, protrusions raised more than the flat sections 14 and depressions recessed more than the flat sections 14 are intermixed in the annular region A.
Provided is a monitoring system and method whereby it is possible to more easily ascertain the internal and external conditions of a marine hose. After a drone 21 has moved to the airspace in the upper vicinity of an IC tag 11 placed on the surface of a marine hose 1, the detection result of the detection index by a detector 10 is transmitted through a return radio wave R2 and is input to a calculation device 20 as acquisition data, the return radio wave R2 being transmitted from the IC tag 11 activated by a transmission radio wave R1 transmitted from a communicator 19 mounted on the drone 21, to the communicator 19 in response to the transmission radio wave R1. The internal condition of the marine hose 1 is determined by the calculation device 20 on the basis of the magnitude of the difference between the acquisition data and the reference data. The external condition of the marine hose 1 is determined by the calculation device 20 on the basis of the difference between the image data acquired by a camera device 22 while the drone 21 is in the airspace above the marine hose 1 and the reference image data.
F17D 5/02 - Preventing, monitoring, or locating loss
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
G06K 7/10 - Methods or arrangements for sensing record carriers by corpuscular radiation
Provided is a tire 1 in which a point Al is defined as a point on a side profile at the same position in a tire radial direction as a radially outer end section of a bead core 11, 11; a distance Hl is defined as the distance in the tire radial direction from a maximum tire width position Ac to the point Al; a point Al' is defined as a point on the side profile at the position in the radial direction at 70[%] of the distance Hl from the maximum tire width position Ac; and a point Am is defined as a point on the side profile at the position in the radial direction at 35[%] of the distance Hl from the maximum tire width position Ac. In the case of the foregoing definitions, the radius of curvature RO [mm] of a circular arc passing through the maximum tire width position Ac, the point Al', and the point Am when the tire is mounted on a regulation rim, is subjected to a regulation internal pressure, and is put in an unloaded state, is in the range 0.20 ≤ RO / SH ≤ 1.20, with respect to the cross-sectional height SH [mm] of the tire.
Provided are a fluid leakage detection system and method for various types of marine hose, which are capable of accurately detecting whether there is fluid leakage from various types of marine hose. A conductive rubber or conductive paste of which an electric resistance value varies over a reference by being impregnated with a fluid L is adopted as a detection element 15 which forms a loop circuit 17 connected to a passive IC tag 11,,, and is continuously extended in a longitudinal direction of a hose main body between an internal layer 3 and a first reinforcement layer 4. An IC tag 11 is disposed on the surface of a marine hose 1. Electric resistance value data Dr in the loop circuit 17 when a transmission radiowave R1 transmitted from a communication apparatus 19 starts the IC tag 11 is transmitted to the communication apparatus 19 by means of a return radiowave R2 transmitted from the IC tag 11 in response to the transmission radiowave R1, and is input to a calculation device 20. Whether there is leakage of the fluid L is determined on the basis of the magnitude of the difference between the electric resistance value data Dr and a reference resistance value data Dc.
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
Provided are a resin tube manufacturing method and device with which it is possible to more effectively utilize a resin when molding a resin tube by resin injection molding using an assist material. A molten resin R1 is injected by an injection machine 2 from one end 8a of a cavity 8 formed in a mold 7 toward another end 8b to fill the cavity 8, and then injecting a fluid or solid assist material As with an assist material injection machine 5 from the other end 8b of the cavity 8 toward the one end 8a to discharge the excess molten resin R1 from the cavity 8, thereby curing the cylindrical molten resin R1 remaining in the cavity 8 to manufacture a resin tube 10. The excess molten resin R1 discharged from the cavity 8 is caused to flow back to the inside of the injection machine 2, and when this back-flowed molten resin R1 is used to manufacture a next new resin tube 10, the molten resin is used by being injected by the injection machine 2 from the one end 8a of the cavity 8 toward the other end 8b.
B29K 105/12 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Provided is a conveyor belt operation management system and method that, with a simple configuration, can accurately ascertain the operation status of a conveyor belt. Based on a reception time t at which after an outgoing radio wave R1 is transmitted from a detector 7 located at a predetermined detection position P of a conveyor device 10 toward a passive type IC tag 2 installed on a conveyor belt 13, a return radio wave R2 returned from the IC tag 2 in response to the outgoing radio wave R1 is received by the detector 7, a running speed V of the conveyor belt 13 is calculated by an arithmetic device 8 to ascertain the operation status of the conveyor belt 13 on the basis of temporal changes in the running speed V, and the arithmetic device 8 transmits data DV on the temporal changes of the running speed V to a terminal device 9 through a communication network, the terminal device 9 being located at a position away from the installation site of the conveyor device 10.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
The present invention provides a rubber composition characterized by being obtained by incorporating 1-100 parts by mass of (B) a polyolefin (which is not a high-density polyethylene having a density of 0.950 g/cm3 or higher) having a hydrolytically condensable silyl group in the molecule into 100 parts by mass of (A) a rubber component.
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
The present invention provides a rubber composition for rim cushions, the rubber composition being improved in terms of low possibility of heat generation, while maintaining good hardness, elongation at break and wear resistance and achieving a good balance among these properties at high levels. According to the present invention, silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, carbon black having a CTAB adsorption specific surface area of 60 m2/g to 160 m2/g, and a sulfur-containing silane coupling agent are added to a diene rubber that contains 35% by mass to 65% by mass of an isoprene rubber and 35% by mass to 65% by mass of a butadiene rubber; at least one terminally modified butadiene rubber for silica is used as the butadiene rubber; the addition amount of the silica relative to 100 parts by mass of the diene rubber is set to 10 parts by mass or more; the total addition amount of the silica and the carbon black relative to 100 parts by mass of the diene rubber is set to more than 50 parts by mass; and the product of the stress M100 at 100% elongation and the hardness is set to 150 or more.
This tire 1 is configured in a manner such that the radial-direction distance D3 from a point P1 to a point T3 relative to a radial-direction distance D1 from the point P1 to a point T1 is within the range of 0.05≤D3/D1≤0.15 in a cross-sectional view in the direction of the meridian of the tire in an unloaded state with 230 [kPa] applied thereto while the tire 1 is mounted to a prescribed rim. The radial-direction distance D6 from the point P1 to a point T6 relative to the radial-direction distance D3 from the point P1 falls within the range of 3.00≤D6/D3≤6.00. The curvature radius R1 of a first arc which passes through points T3, T4 and T5 relative to the curvature radius R2 of a second arc which passes through points T1, T6 and T7 falls within the range of 0.40≤R1/R2≤1.00.
The present invention studies the internal shape of an accommodating body that accommodates a functional component and thereby provides: a functional-component-attached accommodating body which prevents the detachment of the functional component by enhancing the holding force for the functional component, and which makes it possible to avoid a degradation in the durability of the accommodating body while facilitating the work for accommodating the functional component into the accommodating body; and a tire. This functional-component-attached accommodating body 1 comprises a functional component 20 for acquiring tire information, and an accommodating body 10 which accommodates the functional component 20. The accommodating body 10 has: a bottom section 11 fixed to a tire inner surface; a side wall section 12 protruding from the bottom section 11; an accommodating section 13 formed by the bottom section 11 and the side wall section 12; and an opening 14 communicating with the accommodating section 13, the accommodating body having, in at least a portion of an inner wall surface 12x of the side wall section 12, a recesses-and-protrusions region 15 composed of a plurality of protruding sections 15a and/or a plurality of recess sections 15b.
The present invention provides: a plastic silencer connected to piping in an automotive air conditioner, the plastic silencer having sufficient pressure resistance with respect to internal pressure while being lightweight; and a method for manufacturing the plastic silencer. The present invention is such that a plastic insertion-side component 2 having an insertion part 4 at one axial-direction end section of a barrel part 3 and a pipe part 9 linked to the other end section via an expansion pipe part 8, with a circumferential rib 10a being provided in a protruding state to the outer peripheral surface of the barrel part 3, and a plastic reception-side component 11 having a receiving part 13 at the other axial-direction end section of a barrel part 12 and a pipe part 20 linked to the one end section via an expansion pipe part 19, with a circumferential rib 21a being provided in a protruding state to the outer peripheral surface of the barrel part 12, are configured such that the barrel parts 3, 12, which are joined by inserting the insertion part 4 into a circular groove 14 in the receiving part 13 and spin-welding contacting portions of the insertion part 4 and the circular groove 14, together form a cylinder part, the present invention having a cylindrical flow-stopping wall part 18 linked so as to be offset toward the outer periphery of the joining portion, and a cylindrical flow-stopping wall part 16 linked so as to be offset toward the inner periphery of the joining portion.
B29C 69/02 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniques; Apparatus therefor of moulding techniques only
In a tire 1, a middle land part 32 comprises: first middle fine grooves 321 which each have a linear shape or a circular arc shape and which pass through the middle land part 32; and second middle fine grooves 322 which each have a letter-Z shape and which pass through the middle land part 32. Further, a center land part 33 comprises: first center fine grooves 331 which each have one end located at an edge of the center land part 33 so as to be connected to a corresponding one of center main grooves 22 and the other end located within the center land part 33; and second center fine grooves 332 which each extend in a tire circumferential direction and which each have both ends thereof located within the center land part 33. In addition, the first center fine grooves 331 are each inclined in one direction in the tire circumferential direction from the one end toward the other end. Furthermore, the first center fine grooves 331 and the second center fine grooves 332 are arranged so as to form a letter-V shape having a vertex pointing toward one direction in the tire circumferential direction.
Provided are a method and a system for inspecting the quality of a tire member which make it possible to quickly and accurately grasp the magnitude of variation in a predetermined type of quality in the lengthwise direction of a long tire member obtained by joining together a plurality of types of components. Image data D for a predetermined length range C which is continuous without gaps in a lengthwise direction L is obtained by continuously performing a step in which a long tire member R is conveyed in the lengthwise direction L using a conveyance device 2 while irradiating the predetermined length range C of the tire member R with X-rays by means of an X-ray inspection device 3 from the surface side of the tire member R and obtaining image data D based on the X-ray transparency of the predetermined length range C, each of the acquired pieces of image data D is input to a calculation device 4, and the magnitude of variation in the lengthwise direction L of the width dimension of a component M1 formed from unvulcanized rubber in which the mass of the tire member R and the content of a specific component are greater is calculated by the calculation device 4 on the basis of the gradation of light and shade in each of the pieces of image data D.
In a cross-sectional view of this tire 1 in the tire meridian direction, a stress-mitigating layer 4 continuously extends from the groove bottom of a main groove 21 to the tread surfaces of left and right land portions 31 and 32 and covers edge portions of the land portions 31 and 32. The width Wc of the stress-mitigating layer 4 in the tread surfaces of the land portions 31 and 32 is within the range of 0.06≤Wc/Hg with respect to the groove depth Hg1 of the main groove 21. The total width ΣWc of the stress-mitigating layer 4 on the tread surface of one land portion 31 or 32 is within the range of ΣWc/Wb≤0.70 with respect to the contact width Wb1 or Wb2 of the land portion 31 or 32.
The present invention provides a rubber composition for tires, the rubber composition enabling the achievement of further improved balance among on-snow performance, wet performance and wear resistance. The present invention provides a rubber composition which is obtained by adding 70 parts by mass or more of an inorganic filler that contains silica and carbon black to 100 parts by mass of a diene rubber that contains 30% by mass to 60% by mass of a terminally modified styrene-butadiene rubber and has an average glass transition temperature of -70°C to -55°C, wherein: the silica content in the inorganic filler is 60% by mass or more; and the terminally modified styrene-butadiene rubber contains 23% by mass or more of an extending oil, while having a styrene unit content of 37% by mass or less. This rubber composition is characterized in that the tensile stress Mi of a cured product thereof at 300% deformation and the tensile stress Ma of the cured product at 300% deformation after a heat treatment at 50°C for 1,000 hours satisfy formula (Ma - Mi)/Mi ≤ 0.3.
Provided are a tire manufacturing method and manufacturing system with which it is possible for tires having various specifications to be manufactured with good productivity, by forming a green tire by using a robot arm to move a molding drum body sequentially to necessary work stations more flexibly and smoothly. Work stations S are provided in such a way that a plurality of molding drum bodies 2 can be placed temporarily on placement devices 8 between the adjacent work stations S, and in such a way that at least three work stations S are adjacent to one another in a molding step, wherein: a necessary plurality of the work stations S are selected and a movement route of the molding drum body 2 is determined in accordance with the specification of a green tire G; the molding drum body 2 is caused to move in accordance with the movement route by being transferred using the placement devices 8 disposed in positions corresponding to the movement route, using robot arms 6 disposed in positions corresponding to the movement route; and the green tire G is molded by performing molding work at the selected work stations S.
Provided are a tire manufacturing method and manufacturing system with which it is possible for a green tire that is molded by moving a molding drum body sequentially to a plurality of work stations to be molded efficiently while ascertaining a prescribed quality thereof. A molding drum body 2 for which molding work at a work station S1 has been completed, and to which a tire component member M has been affixed is temporarily placed on a placement device 8, and, as a predetermined quality of a green tire G which has been formed by means of the tire component member M affixed to the molding drum body 2 and molding of which is either ongoing or is complete, a mass of the green tire G is examined by means of a mass meter 12, and a profile shape of the green tire G is examined by a profile sensor 13, while the molding drum body 2 is temporarily placed on the placement device 8.
The present invention provides a resin composition which has excellent flexibility, water vapor barrier properties and heat resistance. The present invention provides a resin composition which contains a silane-modified resin and an elastomer that has a polyisobutylene skeleton, and which is characterized in that: the content of the elastomer that has a polyisobutylene skeleton based on the mass of the resin composition is 30% by mass to 90% by mass; the content of the silane-modified resin based on the mass of the resin composition is 10% by mass to 70% by mass; the water vapor transmission rate of the resin composition is 2.0 g∙mm/(m2100251002525 of the resin composition at 25°C is 0.2 to 1.0.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
91.
HOSE FOR REFRIGERANT TRANSPORTATION AND PRODUCTION METHOD THEREFOR
Provided is a hose for refrigerant transportation which is excellent in terms of flexibility, water-vapor barrier property, and heat resistance. The hose for refrigerant transportation comprises an outer layer, a reinforcement layer, and an inner layer, and is characterized in that the outer layer is made of a resin composition comprising an elastomer having a polyisobutylene skeleton and a crosslinked resin, the content of the elastomer having a polyisobutylene skeleton in the resin composition being 30-90 mass% with respect to the mass of the resin composition and the content of the crosslinked resin in the resin composition being 10-70 mass% with respect to the mass of the resin composition, the resin composition has a water vapor permeability of 2.0 g·mm/(m2100251002525, of 0.2-1.0.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08L 23/22 - Copolymers of isobutene; Butyl rubber
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
The present invention provides a fuel transportation hose (10) that can suppress elution of sulfur to a transported object and can suppress interlayer detachment in the hose. This fuel transportation hose (10) includes an inner layer (11), an intermediate layer (12), a reinforcement layer (13), and an outer layer (14) that are laminated in the stated order. The inner layer (11) contains a thermoplastic resin composition containing a first thermoplastic resin having a load flexure temperature of not lower than 75°C, and a second thermoplastic resin having a load flexure temperature lower than 75°C. The intermediate layer (12) contains a rubber composition containing a nitrile rubber. The inner layer (11) and the intermediate layer (LB) (12) are adhered directly or via an adhesive layer.
This pneumatic tire has, on the tire outer surface of at least one sidewall 2 thereof, a recess 20 that continues in the tire circumferential direction. When a straight line drawn to be tangent to the outer outlines of the sidewall 2 and a bead part 3 in a tire meridian cross-section is defined as a tangential line L1, a point at which the tangential line L1 comes in contact with the outer outline of the sidewall 2 is defined as a tangent point P1, a straight line that passes through a wind-up end of a carcass layer 4 and intersects perpendicularly with a body part 4a of the carcass layer 4 is defined as a normal L2, and a straight line that passes the tangent point P1 so as to intersect perpendicularly with the body part 4a of the carcass layer 4 is defined as a normal L3, the relation 0.10×(G1-17)≤A/(S+A)≤0.05×(G1-10) is satisfied among the area A of a region enclosed by the tangent L1 and the outer outlines of the sidewall 2 and the bead part 3, the area S of a region enclosed by the body part 4a, the normal L2, the normal L3, and the outer outlines of the sidewall 2 and the bead part 3, and the thickness G1 of a bead filler 6 as measured along the normal L2.
Provided are a method and a system that enable highly productive manufacture of an elongated tire member formed by joining a plurality of types of constitutive members, through reduction of variation in predetermined quality in the longitudinal direction. A step of conveying a tire member R in a longitudinal direction L by using a conveyor 2, while irradiating, by an X-ray inspection device 3, a predetermined length range C with an X-ray from a surface side of the tire member R to obtain image data D based on X-ray permeability is continuously carried out to obtain the image data D of the predetermined length range C that is continuous in the longitudinal direction L without any gap. The mass of the tire member R and the magnitude of variation in a distribution of a constitutive member M1 formed from unvulcanized rubber having a greater content of a particular component in the longitudinal direction L are calculated by a calculation device 4 on the basis of the color density in each image data D. The variation is reduced by controlling rotating speed of a screw 8s installed inside at least one extruder 8 by a control device 9 on the basis of the magnitude of the variation.
B29C 48/25 - Component parts, details or accessories; Auxiliary operations
B29C 48/395 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
Provided are an accommodation body with a functional component and a tire that can prevent detachment of the functional component during travel and prevent damage of the accommodation body that accommodates the functional component. An accommodation body 1 with a functional component comprises a functional component 20 for acquiring tire information and an accommodation body 10 that accommodates the functional component 20. The accommodation body 10 comprises: a bottom portion 11 that is fixed to a tire inner surface; a crown portion 12 that protrudes from the bottom portion 11; an accommodation space 13 formed by the bottom portion 11 and the crown portion 12; and an opening 14 that communicates to the accommodation space 13. An inclination angle θ2 of the crown portion 12 with respect to the bottom portion 11, measured on an outer wall side of the crown portion 12 in a state in which the functional component 20 is accommodated in the accommodation space 13, is smaller than an inclination angle θ1 of the crown portion 12 with respect to the bottom portion 11, measured on the outer wall side of the crown portion 12 in a state in which the functional component 20 is not accommodated in the accommodation space 13. An angle difference thereof (θ1 - θ2) is in a range from 5° to 15°.
Provided are a functional part assembly which makes it possible to prevent detachment of functional parts and improve damage resistance, and a tire comprising the functional part assembly. A functional part assembly 10 comprises a functional part 20 having functionality for detecting the state of a tire, and a support body 30 that accommodates the functional part 20 and is attached to the inner surface of the tire. The functional part 20 is affixed inside an accommodation section 31 of the supporting body 30 by using a locking part 40 formed of a pair consisting of a protruding part 41 and a receiving part 42. One of either the protruding part 41 or the receiving part 42 is provided on a side wall 30A of the accommodation section 31, and the other of the protruding part 41 or the receiving part 42 is provided on a portion of the functional part 20 that is in contact with the side wall 30. When the functional part 20 is not accommodated in the support body 30, the ratio h/H of the height h of the functional part 20 side of the locking part 40 to the height H of the support body 30 side of the locking part 40 satisfies the relationship 1.00 < h/H ≤ 1.40.
Provided are a container with a functional component and a tire in which the internal shape of the container housing the functional component is devised so that the functional component can accurately acquire tire interior information. A container with a functional component comprises a functional component 20 for acquiring tire information and a container 10 that contains the functional component 20, wherein the functional component 20 has a housing 21 that houses an electronic component 22 and a film-form piezoelectric element 24 fixed to a wall surface of the housing 21, at least one protrusion 15 is formed on the inner surface of the container 10, and at least part of the protrusion 15 and the piezoelectric element 24 are in contact directly or indirectly with a wall surface of the housing 21 therebetween, in a state in which there is no load and the functional component 20 is contained within the container 10.
Provided are an accommodating body with a functional component, and a tire, in which an internal shape of the accommodating body, for accommodating the functional component, is devised such that the functional component can accurately acquire tire interior information, while cracking of a projection formed on an inner surface of the accommodating body is suppressed. This accommodating body having a functional component comprises a functional component 20 for acquiring tire information, and an accommodating body 10 for accommodating the functional component 20, wherein: the functional component 20 has a housing 21 and a piezoelectric element 24 fixed to a wall surface of the housing 21; a protuberance 15 is formed on an inner surface of the accommodating body 10; in a no-load condition in which the functional component 20 is accommodated in the accommodating body 10, the protuberance 15 and the piezoelectric element 24 are in contact with one another either directly, or indirectly, sandwiching the wall surface of the housing 21; and in a top view of the protuberance 15, a surface area of a bottom-most surface 15y of the protuberance 15 is greater than a surface area of an uppermost portion 15x of the protuberance 15, and an outer edge of the uppermost portion 15x of the protuberance 15 is inward of an outer edge of the bottom-most surface 15y of the protuberance 15.
patents
