Provided is a tire comprising a tread part having at least one rubber layer and a breaker, wherein a thickness of a cap rubber layer constituting a tread surface relative to a total thickness of the tread part is 20% or more, wherein an average value of acetone extraction amounts of a tread rubber constituting the tread part is 12.0% by mass or less, wherein a difference between the average value of the acetone extraction amounts of the tread rubber and an acetone extraction amount of a breaker topping rubber is 7.0% by mass or less, and wherein an average value of ash contents of the tread rubber is 7.5% by mass or more.
The present invention further improves overall performance including wear resistance performance and wet grip performance. This tire comprises a tread portion having a land part in which a groove with a width of 2 mm or less and a depth of 20 mm or less is provided such that, when viewed in plan from the surface of the tread portion, two or more intersecting parts where an opening part and a groove bottom part of the groove, which is twisted in shape, intersect with each other are provided so as to be spaced apart from each other in a longitudinal direction. The total of the areas of the intersecting parts is 95% or less relative to the area of the opening part when viewed in plan from the surface of the tread portion. The tread portion is formed of a rubber composition containing a rubber component and 20 parts by mass or more of a reinforcement filler with respect to 100 parts by mass of the rubber component. When the number of intersecting parts per groove is X and the content of the reinforcement filler is Y (parts by mass), X × Y > 100.
A tire 1 includes a first shoulder block 5. The first shoulder block 5 includes a first portion 7 that includes a first tread surface 11 forming a first tread end T1 and a first side wall surface 12 extending inward in a tire radial direction from the first tread end T1, and a second portion 8 that includes a second tread surface 15 forming a second tread end T2 and a second side wall surface 16 extending inward in the tire radial direction from the second tread end T2. The second tread surface 15 includes a recessed portion 18 which is at least partially recessed inward of the first tread surface 11 in the tire radial direction such that the second tread end T2 is located inward of the first tread end T1 in the tire radial direction. A recess 19 is formed in the second side wall surface 16. The recess 19 extends in a tire circumferential direction from a shoulder lateral groove 3, and has a bottom portion 20 in the first shoulder block 5.
A tire can include beads, a carcass, sidewall layers, a tread, a belt, and a band. A carcass ply of the carcass can include a ply body and a pair of turned-up portions. An end of each turned-up portion can be located axially inward of an end of the belt. A ratio of a thickness from the carcass to an outer surface of the tire along a first normal line to a thickness from the carcass to the outer surface of the tire along a second normal line can be not less than 1 and not greater than 2.
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
Provided is a heavy duty tire 2 that can suppress a decrease in durability due to the provision of a band and can achieve improvement of uneven wear resistance. The tire 2 includes a reinforcing layer 20 and a tread 4. The tread 4 has shoulder circumferential grooves 34. The reinforcing layer 20 includes a belt 52 and a band 54. The belt 52 includes an inner belt ply 74 and an outer belt ply 76. The band 54 includes a full band 66. The full band 66 is located between the inner belt ply 74 and the outer belt ply 76. A distance UFc between the full band 66 and the inner belt ply 74 is longer than a distance SFc between the full band 66 and the outer belt ply 76 at an equator plane of the tire 2.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
An object of the present disclosure is, for a golf ball comprising a cover containing a polyurethane as a resin component, to improve the moldability of the cover and increase the productivity of the golf ball while suppressing lowering in the scratch resistance of the cover. The present disclosure provides a golf ball comprising a spherical core and a cover covering the spherical core, wherein the cover is formed from a cover composition containing (A) a thermoplastic polyurethane and (B) an olefin/unsaturated carboxylic acid copolymer and/or an olefin/unsaturated carboxylic acid/unsaturated carboxylic acid ester copolymer as a resin component, and an amount of (A) the thermoplastic polyurethane is 50 mass % or more in the resin component.
A motorcycle tire includes a tread portion having a crown region extending across a tire equatorial plane, and a pair of shoulder regions located axially outside the crown region. A tread rubber includes a surface layer of first rubber arranged on the radially outer side, a bottom layer of third rubber arranged on the radially inner side, and a pair of middle layers of second rubber arranged between the surface layer and the bottom layer. In terms of a loss tangent tan 8 at 100° C., the second rubber is greater than the first rubber and the third rubber.
A motorcycle tire includes a tread portion having a crown region extending across a tire equatorial plane, and a pair of shoulder regions located axially outside the crown region. A tread rubber includes a surface layer of first rubber arranged on the radially outer side, a bottom layer of third rubber arranged on the radially inner side, and a pair of middle layers of second rubber arranged between the surface layer and the bottom layer. In terms of a loss tangent tan 8 at 100° C., the second rubber is greater than the first rubber and the third rubber.
The surface layer and the bottom layer extend from one shoulder region to the other shoulder region through the crown region. Each middle layer extends through the respective shoulder region and is not arranged in the crown region. The surface layer and the bottom layer are directly connected in the crown region.
Carpets for automobiles; carpets for vehicles; floor mats
for automobiles; floor mats for vehicles; floor mats; floor
rugs; carpeting; textile floor mats for automobiles; textile
floor mats for vehicles.
A golf club head includes a face portion including a striking face, a crown portion including a crown surface, a sole portion including a sole surface, and a hosel portion including a protruding portion that protrudes from the crown surface. The hosel portion includes a single upper end surface that is a substantially flat surface, and a plurality of shaft receiving holes formed on the upper end surface. The shaft receiving holes include a first shaft receiving hole and a second shaft receiving hole. The golf club head also includes a cover member that covers at least one of the shaft receiving holes which is not to have a shaft inserted.
A tire includes a tread formed from a rubber composition containing a rubber component including a styrene butadiene rubber and a filler including silica. The tread includes a circumferential narrow groove and a transverse sipe. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DC (mm) of a sipe body of the transverse sipe, and a groove depth HH (mm) of a body portion of the circumferential narrow groove satisfy the following relational expression.
A tire includes a tread formed from a rubber composition containing a rubber component including a styrene butadiene rubber and a filler including silica. The tread includes a circumferential narrow groove and a transverse sipe. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DC (mm) of a sipe body of the transverse sipe, and a groove depth HH (mm) of a body portion of the circumferential narrow groove satisfy the following relational expression.
(
CSB
+
BS
)
/
❘
"\[LeftBracketingBar]"
DC
-
HH
❘
"\[RightBracketingBar]"
≥
5
A heavy duty tire includes a tread, sidewalls, beads, a carcass, a belt, chafers, and a tag holder including an RFID tag. In the tire, the carcass includes a carcass ply including carcass cords, and the carcass cords are formed from an organic fiber. The carcass ply includes a ply body extending between the beads and turned-up portions each connected to the ply body and turned up around the bead. In a standard ground-contact state, an end of the turned-up portion is axially inward of an axially outer end of a rim, and the RFID tag is axially outward of the axially outer end of the rim and is radially outward of a radially outer end of the rim. In the tire, an angle formed between a length direction of the RFID tag and the carcass cord is not less than 80 degrees and not greater than 90 degrees.
[Problem] To provide a photocurable composition that yields a molded body having excellent mechanical characteristics. [Solution] This photocurable composition is characterized by containing inorganic particles, which have organic groups at the surface thereof, at a quantity of 15-65 parts by mass relative to a total of 100 parts by mass of: a urethane (meth)acrylate oligomer; a urethane (meth)acrylate oligomer which contains a first monomer having a glass transition temperature (Tg1) of -100°C-10°C and a second monomer having a glass transition temperature (Tg2) of 70°C-150°C as vinyl monomers; and a vinyl monomer.
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
It is an object of the present disclosure to allow for providing a repair sheet that can process a tire with less effort and a tire repairing method.
It is an object of the present disclosure to allow for providing a repair sheet that can process a tire with less effort and a tire repairing method.
5 Provided is a repair sheet to be attached to a tire part, the repair sheet comprising a retaining layer capable of retaining an additive to be supplied into the tire part, wherein the retaining layer has a breaking strength of 0.5 MPa or more and a breaking elongation of 5% or more.
A tire includes a tread formed from a rubber composition containing a rubber component including a styrene butadiene rubber and a filler including silica. The tread includes a main lateral groove and a circumferential narrow groove. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth MH (mm) of a groove portion of the main lateral groove, and a groove depth HB (mm) from a groove opening of the circumferential narrow groove to a width reference position PB satisfy the following relational expression.
A tire includes a tread formed from a rubber composition containing a rubber component including a styrene butadiene rubber and a filler including silica. The tread includes a main lateral groove and a circumferential narrow groove. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth MH (mm) of a groove portion of the main lateral groove, and a groove depth HB (mm) from a groove opening of the circumferential narrow groove to a width reference position PB satisfy the following relational expression.
(
CSB
+
BS
)
/
(
HB
-
MH
)
≥
5
A pneumatic tire comprises a bead portion, a carcass, a bead reinforcing layer and a bead apex rubber. The carcass comprises a first carcass ply of carcass cords arranged at an angle of 60 to 90 degrees with respect to the tire circumferential direction. The bead reinforcing layer comprises a first reinforcing ply of bead reinforcing cords arranged at an angle of 60 to 90 degrees with respect to the tire circumferential direction. The first carcass ply is composed of a main portion and a turnup portion continued from the main portion. The first reinforcing ply comprises a first portion and a second portion continued from the first portion. The radially outer end of the second portion is located on the axially outer side of the bead apex rubber and on the radially inner side of the radially outer end of the bead apex rubber.
B60C 15/06 - Flipper strips, fillers, or chafing strips
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
A tire has a tread portion including a middle land portion defined between a crown circumferential groove and a shoulder circumferential groove. The middle land portion is provided with communicating sipes, axially inner sipes and axially outer sipes. The communicating sipes include a first communicating sipe comprising a first linear portion extending from the crown circumferential groove, and a first curved portion extending from an end of the first linear portion to the shoulder circumferential groove in a curved manner.
The present invention provides a tire that has excellent cracking resistance. The present invention relates to a tire that has a tread and a pair of sidewalls. A tread rubber composition that forms the tread and a sidewall rubber composition that forms at least one of the pair of sidewalls are different rubber compositions. The surface of the sidewalls is coated with an acrylic resin. The difference (AEt-AEs) between an acetone extraction amount AEt (mass%) for the tread rubber composition and an acetone extraction amount AEs (mass%) for the sidewall rubber composition is at least 1.0 mass%.
An object of the present disclosure is to provide a golf ball that rolls in a lowered distance on fairway wood shots. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer covering the spherical core, and an outermost cover positioned outside the intermediate layer and having a plurality of dimples formed thereon, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, and a crosslinking initiator, the base rubber contains a natural rubber, and an occupation ratio of a total area of the plurality of dimples in a surface area of a virtual sphere that is assumed to have no dimples on the outermost cover is 45% or more and less than 75%.
Provided is a heavy duty tire 2 that can suppress a decrease in durability due to the provision of a band and can achieve improvement of uneven wear resistance. The tire 2 includes a reinforcing layer 20 and a tread 4. The tread 4 has shoulder circumferential grooves 34. The reinforcing layer 20 includes a belt 52 and a band 54. The belt 52 includes an inner belt ply 74 and an outer belt ply 76. The band 54 includes a full band 66. The full band 66 is located between the inner belt ply 74 and the outer belt ply 76. A distance UFc between the full band 66 and the inner belt ply 74 is longer than a distance SFc between the full band 66 and the outer belt ply 76 at an equator plane of the tire 2.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
29.
GOLF CLUB HEAD FITTING DEVICE, FITTING METHOD, AND FITTING PROGRAM
[Problem] To easily identify a wedge type head suitable for each player's swing action. [Solution] A golf club head fitting device 200 includes: an acquiring unit 201 for acquiring measurement data obtained by measuring a player's golf club swing action using a measuring instrument; a calculating unit 202 for calculating a swing index on the basis of the measurement data; and a selecting unit 203 for selecting a golf club head characteristic on the basis of the swing index. The golf club head is a wedge-type head, the swing index includes a rotation index relating to rotation of the swing action about a shaft axis, and the selecting unit 203 selects the bounce angle of the wedge-type head suitable for the player on the basis of the rotation index, as the characteristic.
A63B 60/46 - Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
A63B 69/36 - Training appliances or apparatus for special sports for golf
An object of the present disclosure is to provide a golf ball having excellent impact durability and excellent flight distance performance. The present disclosure provides a golf ball comprising a constituent member, wherein at least one part of the constituent member is formed of a cured product of a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent and (c) a crosslinking initiator, (a) the base rubber includes (a1) a polybutadiene synthesized by using a cobalt-based catalyst and (a2) a natural rubber, (b) the co-crosslinking agent includes an unsaturated carboxylic acid and/or a metal salt thereof, and (c) the crosslinking initiator includes an organic peroxide.
This maintenance monitoring system comprises an index acquiring unit and an evaluating unit. The index acquiring unit is connected to at least one of a computer that calculates a loosening index indicating a degree of loosening of a fastening member for fixing a tire/wheel assembly to a hub of a vehicle on the basis of sensing data output by a sensor mounted on the vehicle, a computer that calculates a wear index that estimates the state of wear of the tire included in the tire/wheel assembly on the basis of sensing data output by the sensor, and a computer that calculates a depressurization index indicating a depressurization state of the tire on the basis of sensing data output by the sensor, and the index acquiring unit acquires at least one of the loosening index, the wear index, and the depressurization index. The evaluation unit updates an evaluation index for evaluating the degree of maintenance of the tire/wheel assembly in accordance with the at least one of the loosening index, the wear index, and the depressurization index.
NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY (Japan)
Inventor
Yamaguchi, Haruhiko
Inoue, Yukino
Takahashi, Seiji
Nakayama, Toru
Yamashita, Satoshi
Tozawa, Yuzuru
Abstract
Objects are to provide: a fusion protein capable of binding to lipid droplets while having an enzymatic activity to synthesize a hydrophobic compound; a method for producing a substance including accumulating a hydrophobic compound in lipid droplets using the fusion protein; a vector which can enhance production of a hydrophobic compound when it is introduced into cells using genetic recombination techniques; and a transgenic cell into which the vector or a gene coding for the fusion protein has been introduced. The disclosure relates to a fusion protein having an amino acid sequence (first amino acid sequence) capable of binding to lipid droplets, and an amino acid sequence (second amino acid sequence) having an enzymatic activity to synthesize a hydrophobic compound, the first and second amino acid sequences being fused via a linker sequence (third amino acid sequence) while maintaining the enzymatic activity of the second amino acid sequence.
A tire has a tread portion provided with grooves including first oblique grooves, second oblique grooves, first shoulder longitudinal grooves, and first crown longitudinal grooves. Each first oblique groove terminates in conjunction with one of the second oblique grooves. Each second oblique groove terminates in conjunction with one of the first oblique grooves. The blocks include crown blocks, first shoulder blocks, and first middle blocks. Each block has a ground contacting surface provided with sipes. A sipe density SDc of each crown block, a sipe density SDm of each first middle block, and a sipe density SDs of each first shoulder block satisfy SDc>SDs and SDm>SDs.
Provided is a pneumatic tire with a tread portion having: a reinforcing cord layer including at least one belt ply of steel cords rubberized with topping rubber; and a tread rubber forming a part of the tread portion from a ground contacting surface of the tread portion to the radially outer side of the reinforcing cord layer. A product T1×T2×La×tan δ1 is 0.33 to 1.10, wherein T1 is the thickness in mm of the tread rubber measured at the tire equator; T2 is the average thickness in mm of the or each belt ply; La is the land ratio of the ground contacting surface; and tan δ1 is the loss tangent of the tread rubber at 30 degrees C.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
Provided is a tire rubber composition and a tire each having excellent overall performance in terms of abrasion resistance and crack growth resistance. The tire rubber composition contains a rubber component including an epoxidized diene-based rubber; a divalent or higher carboxylic acid compound; and sulfur, the tire rubber composition containing the sulfur in an amount of 1.0 parts by mass or more per 100 parts by mass of the rubber component, the tire rubber composition having a ratio K (amount of divalent or higher carboxylic acid compound/amount of sulfur) of an amount (parts by mass) of the divalent or higher carboxylic acid compound to an amount (parts by mass) of the sulfur of 0.10 or higher and 10.00 or lower.
A motorcycle tire includes an insulation rubber layer disposed between a main body portion of a carcass ply and an inner liner layer in each axial half of the motorcycle tire. The insulation rubber layer extends from a first end on a tread portion side at least to a bead core. A sidewall portion includes an outermost end in the tire radial direction of an area of a tire outer surface of the sidewall portion contacting a standard rim. The tire outer surface has a side profile occupying 90% or more of a length in the tire radial direction between the tread edge and the outermost end from the tread edge. The side profile is a linear line or an arc concave axially inward and having a radius of curvature of 55 mm or more.
Provided is a method, etc., for estimating uneven tire wear. This tire state estimation method involves: obtaining an image which includes both ends of the tread of a target tire, and captures said tread from the front in a manner such that said tread is continuous in a prescribed direction; inputting the obtained image into a trained first machine learning model; and deriving an output from the trained first machine learning model. Therein, the output of the trained first machine learning model corresponds to the estimation results for the uneven wear of the target tire.
An object of the present disclosure is to provide a rubber composition which comprises a hydrogenated carboxy-modified acrylonitrile-butadiene rubber as a base rubber and from which a crosslinked rubber having excellent mechanical strength and a great friction coefficient is obtained even if the rubber composition is vulcanized at a high temperature. The present disclosure provides a grip rubber composition comprising a base rubber, a vulcanizing agent and a vulcanization accelerator, wherein the base rubber contains a hydrogenated carboxy-modified acrylonitrile-butadiene rubber, the rubber composition comprises a thiuram based vulcanization accelerator in an amount of 4 parts by mass or more, a sulfenamide based vulcanization accelerator in an amount of 0.3 part by mass or more, and a thiourea based vulcanization accelerator in an amount of 0.1 part by mass or more with respect to 100 parts by mass of the base rubber, and a crosslinked rubber obtained by curing the rubber composition at a vulcanizing temperature of 185° C. has a loss coefficient (tan δ) and a complex elastic modulus (E*) (MPa) at a temperature of 25° C. in a ratio (tan δ/E*) ranging from 0.027 to 0.052, wherein the loss coefficient (tan δ) and the complex elastic modulus (E*) (MPa) at the temperature of 25° C. are measured with a dynamic viscoelasticity measuring apparatus (an oscillation frequency: 10 Hz, a strain amplitude: 0.05%, and a tensile mode).
Provided is a method for quantifying sulfur-containing compounds enabling long-term stable measurement. The method for quantifying sulfur-containing compounds includes use of an alkylthiophene-containing rubber composition as a standard material.
A mold for vulcanization molding a tire includes a tread ring. The tread ring includes a ground contacting surface molding portion, a first groove forming convex portion and a second groove forming convex portion raised from the ground contacting surface molding portion, and at least one blade having both ends connected with the first and second groove forming convex portions so as to form a sipe having both ends connected with two grooves. The at least one blade includes a main body portion having a thickness of 0.2 mm or less and a reinforcing portion having a thickness greater than 0.2 mm. The reinforcing portion includes a first reinforcing portion formed locally on a radially inner end edge side of the blade and a first connection portion side. The first connection portion is a connection between the blade and the first groove forming convex portion.
The present invention provides a polymer-coated glass base material on which the adsorption of normal cells such as blood cells is prevented and onto which a specific type of cells such as cancer cells, stem cells, and T cells can be selectively adsorbed. The present invention pertains to a polymer-coated glass base material in which one or more polymer layers are formed on the surface of a glass base material, wherein the glass is a soda lime glass having a contact angle of an air bubble in water of 100 degrees to 120 degrees inclusive, and the surface of an outermost layer among the polymer layers has an elastic modulus of 1.20 MPa or less in water or in an aqueous solution.
C03C 17/32 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
C03C 17/34 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
C08F 20/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
C12M 1/00 - Apparatus for enzymology or microbiology
A golf club includes a head, a shaft, and a grip. The head has a center-of-gravity depth of greater than or equal to 23.5 mm. The head has a center-of-gravity distance of less than or equal to 39 mm. The shaft has a forward flex of greater than or equal to 110 mm. When f1 denotes the forward flex of the shaft and f2 denotes a backward flex of the shaft, f2/f1 may be greater than or equal to 0.8 and less than or equal to 0.9. The head may have a volume of greater than or equal to 380 cc. The shaft may have a weight of less than or equal to 50 g.
A golf club head includes a crown, a heel portion, a toe portion opposite the heel portion, a sole opposite the crown, and a striking face. The striking face includes a striking face periphery, a heel-wardmost extent, a toe-wardmost extent, a lowermost extent, an uppermost extent, and a face center. A maximum characteristic time of the striking face corresponds to a point P1 on the striking face. The point P1 is laterally spaced from the face center by a distance D6. The distance D6 is no less than 21.3 mm.
Provided is a tire comprising an inner liner and an insulation touching the inner liner on an outer side of the inner liner in a tire radial direction, wherein the insulation is composed of a rubber composition comprising a recovered carbon black, wherein an air permeation coefficient of a rubber composition constituting the inner liner is less than 18×10−11 cm3·cm/(cm2·s·cmHg), wherein a thickness of the inner liner on a tire equatorial plane is 1.5 mm or less, and wherein a loss tangent at 70° C., 70° C. tan δ, of a complex of the insulation and the inner liner is 0.22 or less.
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 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
[Problem] To provide a method for producing a medical rubber article in which the surface friction coefficient and tackiness are reduced. [Solution] This method for producing a medical rubber composition is characterized by comprising a step for irradiating, with ultraviolet rays, a cured product of a medical rubber composition containing (a) a base polymer containing a halogenated butyl rubber and (b) a particulate polyolefin resin.
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
C08L 23/28 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
53.
MEDICAL RUBBER ARTICLE AND PRODUCTION METHOD THEREFOR
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
[Problem] To provide: a syringe gasket of which the surface has a reduced friction coefficient and adhesiveness; and a method for manufacturing the same. [Solution] A syringe gasket according to the present invention is characterized: by being formed from a rubber composition that contains (a) a base polymer containing a halogenated butyl rubber and (b) resin particles; and in that, in relation to an image analysis result obtained when the surface roughness is measured by using a laser microscope, at least a portion of the surface satisfies P = (Vmp/V) ≥ 0.25 where Vmp (mL/m2) is the volume of a protruding ridge section at which the load area ratio by which a core section and the protruding ridge section are separated is 40%, and V (mass%) is the amount of (a) the base polymer contained in the rubber composition.
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
C08J 7/00 - Chemical treatment or coating of shaped articles made of macromolecular substances
C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
C08L 23/28 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers
F16J 15/12 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
55.
SULFUR-BASED ACTIVE MATERIAL, ELECTRODE, LITHIUM-ION SECONDARY BATTERY, AND PRODUCING METHODS THEREOF
It is an object of the present invention to improve a volumetric energy density while maintaining a capacity retention rate of an active material that constitutes an electrode of a lithium-ion secondary battery. Provided is a method of producing a sulfur-based active material, the method comprising the steps of: (1) mixing an acrylic resin, sulfur, and an iron compound comprising a divalent or trivalent iron ion to obtain a raw material; and (2) baking the raw material; wherein the iron compound has a median diameter of 12.00 μm or less.
[Problem] To provide a method for producing a medical rubber article which has a surface having a reduced coefficient of friction and reduced tackiness. [Solution] This method for producing a medical rubber article is characterized by including (a) a step in which as a base rubber, a cured object formed from a medical rubber composition including a halogenated butyl rubber is irradiated with ultraviolet light.
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
The present disclosure provides a tire that has both excellent wet grip performance and excellent dry grip performance. The tire of the present disclosure includes a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition, E* (MPa) when wet with water, E* (MPa) when dry, tan δ when wet with water, and tan δ when dry of the groove-forming rubber composition and groove depth D (mm) of the circumferential groove satisfying at least one of the following formula (1-1) or the following formula (1-2) as well as the following formula (2):
The present disclosure provides a tire that has both excellent wet grip performance and excellent dry grip performance. The tire of the present disclosure includes a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition, E* (MPa) when wet with water, E* (MPa) when dry, tan δ when wet with water, and tan δ when dry of the groove-forming rubber composition and groove depth D (mm) of the circumferential groove satisfying at least one of the following formula (1-1) or the following formula (1-2) as well as the following formula (2):
E
*
when
wet
with
water
/
E
*
when
dry
≤
0.9
(
1
-
1
)
tan
δ
when
wet
with
water
/
tan
δ
when
dry
≥
1.1
(
1
-
2
)
D
/
(
E
*
when
wet
with
water
/
E
*
when
dry
)
>
9.
(
2
)
where E* and tan δ represent a complex modulus of elasticity (MPa) and a loss tangent, respectively, after 30 minutes from the start of measurement under the conditions of a temperature of 30° C., an initial strain of 10%, a dynamic strain of 1%, a frequency of 10 Hz, an elongation mode, and a measurement duration of 30 minutes, and D represents the groove depth (mm) of the circumferential groove.
Provided is a polymer-coated glass substrate having a surface with controlled irregularities and a low elastic modulus. The polymer-coated glass substrate includes a glass substrate and a hydrophilic polymer layer including a blend of hydrophilic polymers with different molecular weights, the hydrophilic polymer layer being on a surface of the glass substrate.
B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
C03C 17/32 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
C12M 1/12 - Apparatus for enzymology or microbiology with sterilisation, filtration, or dialysis means
A golf club head has a hollow therein, and comprises a head main body including a face portion, a crown portion and a sole portion, and a weight member fixed to the head main body. The sole portion includes a toe side region, a heel side region and a center region therebetween. The center region is provided with a bulge portion which bulges downward than the outer surfaces of the toe side region and heel side region. The bulge portion has a bottom surface facing downward of the head, and a rear end surface extending upward from the bottom surface and facing toward the rear of the head. The rear end surface is provided with a recess into which the weight member is fixed so as to be located below the crown portion and above the bottom surface of the bulge portion.
A head includes a face portion including a striking face. The face portion includes a face main portion that includes: a central section including a face center, a transition section located outside the central section, and a peripheral section located outside the transition section. The peripheral section includes: a first peripheral subsection located in toe and heel side parts; and a second peripheral subsection located in crown and sole side parts. The transition section includes a first transition subsection located between the central section and the first peripheral subsection, and a second transition subsection located between the central section and the second peripheral subsection. The central section has a central section uniform wall thickness tc and a surface area of 100 mm2 or more. The first peripheral subsection has a wall thickness greater than the thickness tc. The second peripheral subsection has a wall thickness smaller than the thickness tc.
A golf club head includes a unitary component. The unitary component is formed of a stainless steel material. The unitary component has variable hardness. A first portion of the component exhibits a first hardness H1 no less than 50HRC. A second portion of the component exhibits a second hardness H2 no greater than 85HRB.
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
tan δ when wet with water/tan δ when dry>1.00 (1)
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
tan δ when wet with water/tan δ when dry>1.00 (1)
Z≥0.10 (2)
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
tan δ when wet with water/tan δ when dry>1.00 (1)
Z≥0.10 (2)
where tan δ represents a loss tangent after 30 minutes from the start of measurement under the conditions of a temperature of 30° C., an initial strain of 10%, a dynamic strain of 1%, a frequency of 10 Hz, an elongation mode, and a measurement duration of 30 minutes, and Z represents the ratio D/T.
A tire can include a tread and a belt. Each end of a base layer of the tread can be located axially inward of an end of the belt. The tread can include circumferential grooves, thereby forming land portions including a crown land portion, a shoulder land portion, and a middle land portion. A cap layer proportion ARc of the crown land portion can be not less than 1.5 and not greater than 3.5. A cap layer proportion ARm of the middle land portion can be equal to or higher than the cap layer proportion ARc of the crown land portion. A cap layer proportion ARs of the shoulder land portion can be higher than the cap layer proportion ARm of the middle land portion and not less than 5.0 and not greater than 9.5.
Provided is a tire comprising a tread part having a first layer comprising a rubber component and a filler, wherein a maximum load capacity WL, a tire weight G, a land ratio R, 30° C. E*D of the first layer, 30° C. E*W of the first layer, 30° C. tan δD of the first layer, and 30° C. tan δW of the first layer satisfy a give relationship.
A tire 2 includes a pair of beads 10, a carcass 12 including a carcass ply 36, a pair of sidewalls 6, a pair of chafers 8, and a tag member 22 including an RFID tag 54. The carcass ply 36 includes a ply body 38 and a pair of turned-up portions 40. A plurality of recesses 62 are provided on a side surface 26, of the tire 2, which includes a maximum width position PW of the tire 2. An end PF of the turned-up portion 40 and the plurality of recesses 62 overlap a boundary BS between the sidewall 6 and the chafer 8. Among the plurality of recesses 62, the recess 62 located on a radially outermost side is a first recess 62a, and the RFID tag 54 is located radially inward of the maximum width position PW and located radially outward of the first recess 62a.
A golf club head includes a face portion including a striking face, a body portion, and a weight member disposed in the body portion. The body portion includes a weight receiving portion on which the weight member is disposed. A toe-heel directional length of the weight member is greater than a top-sole directional length of the weight member. The body portion includes a sole thin-wall portion whose outer surface constitutes a part of a sole surface and whose wall thickness is 0.8 mm or greater and 4.6 mm or less. An inner surface of the sole thin-wall portion includes: a weight contact surface constituting a part of the weight receiving portion and being in contact with the weight member; and a space facing surface located on a face side of the weight contact surface and facing an empty space. The weight member is not exposed outside the golf club head.
[Problem] To provide a golf club head fitting device and the like that can easily specify an index related to a specification for a golf club head that is suited to the swing of each player. [Solution] A golf club head fitting device 200 includes an acquisition unit 201 that acquires measurement data obtained as a result of a measurement apparatus measuring the swing of a golf club by a player, a calculation unit 202 that calculates a swing index on the basis of the measurement data, and a selection unit 203 that selects at least one club head index related to a specification for a golf club head that is suited to the player on the basis of the swing index.
A63B 60/46 - Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
A63B 69/36 - Training appliances or apparatus for special sports for golf
The present invention further improves the wear resistance and late-stage grip performance of a tire. The present invention is a tire, provided with a tread section, wherein: in a land section on a surface of the tread section, a groove is formed that comprises an opening section facing the surface of the tread section and a groove base section, and that has a width of 2 mm or less and a depth of 20 mm or less; the opening section and the groove base section intersect in plan view of the surface of the tread section; the proportion X of the area of the intersecting section of the opening section and the groove base section to the area of the opening section in plan view of the surface of the tread section is 95% or less; the tread section is formed from a rubber composition that includes a rubber constituent and carbon black, the carbon black content (by mass) Y being at least 20 parts by mass relative to 100 parts by mass of the rubber constituent; and X / Y < 4.
The present invention further improves later stage grip performance in a tire. This tire comprises a tread section. Formed in a land section of the surface of the tread section is a groove that has an opening section opening in the surface of the tread section, and a groove bottom section, and has a width of 2 mm or less and a depth of 20 mm or less. The opening section and the groove bottom section intersect when the surface of the tread section is viewed in plan view, and the ratio X of the area of the intersecting section of the opening section and the groove bottom section to the area of the opening section when the surface of the tread section is viewed in plan view is 95% or less. The tread section is formed from a rubber composition that includes a rubber component, silica, and carbon black, the ratio Y of the silica content (parts by mass) to the carbon black content (parts by mass) being greater than 50%. Furthermore, X/Y<1.5.
It is an object of the present invention to provide a novel sulfur-based active material that can improve in cycle characteristics, an electrode comprising the sulfur-based active material, that is, a positive electrode or a negative electrode, and a lithium-ion secondary battery comprising the electrode. Provided is a sulfur-based active material obtained by baking a mixture comprising an acryl-based monomer and sulfur, wherein a boiling point of the acryl-based monomer is 230° C. or higher.
A tire has a tread portion comprises four circumferential grooves and five land portions. The four circumferential grooves include a first shoulder circumferential groove, a second shoulder circumferential groove, a first crown circumferential groove and a second crown circumferential groove. The five land portions include a first middle land portion, a second middle land portion and a crown land portion. The first middle land portion is provided with first middle lateral grooves. The second middle land portion is provided with second middle lateral grooves. In a plan view of the tread portion, a first end of each first middle lateral groove overlaps with a first virtual zone, and a second end of each first middle lateral groove overlaps with a second virtual zone.
A tire 2 includes a tread 4 formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread 4 has a plurality of circumferential main grooves 10. The plurality of circumferential main grooves 10 define a pair of crown land portion 20 in the tread 4. Each crown land portion 20 has a crown narrow groove 24. Each crown narrow land portion 34 defined by the crown narrow groove 24 has a crown sipe 40. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DGs of the crown sipe 40, and a groove depth DGg of the crown narrow groove 24 satisfy the following relational expression.
A tire 2 includes a tread 4 formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread 4 has a plurality of circumferential main grooves 10. The plurality of circumferential main grooves 10 define a pair of crown land portion 20 in the tread 4. Each crown land portion 20 has a crown narrow groove 24. Each crown narrow land portion 34 defined by the crown narrow groove 24 has a crown sipe 40. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DGs of the crown sipe 40, and a groove depth DGg of the crown narrow groove 24 satisfy the following relational expression.
(
CSB
+
BS
)
/
(
DGg
-
DGs
)
≥
5
A pneumatic tire mountable and usable on a rim can include a tread portion having a ground contact surface, and a pair of sidewall portions extending inward in a tire radial direction from both sides of the tread portion in a tire axial direction. The rim can have a rim diameter of 10 to 18 inches. The rim can have a rim width that is 78% to 99% of a cross-sectional width of the tire. A ratio of a cross-sectional height of the tire to the cross-sectional width can be 30% to 45%. Each sidewall portion can have a buttress portion located on an outer side in the tire radial direction. A protector protruding outward in the tire axial direction can be on at least one of a pair of the buttress portions.
The present disclosure provides a rubber composition and a tire which can suppress changes in performances caused by changes in road conditions from dry to wet road surface or from wet to dry road surface. The tire of the present disclosure has E* when wet with water (MPa), E* when dry (MPa), tan δ when wet with water, tan δ when dry, 40% modulus (MPa) at 70° C. before a tensile test, and 40% modulus (MPa) at 70° C. after the tensile test which satisfy the following formulas (1) to (3):
(1) E* when wet with water/E* when dry ≤0.90
(2) tan δ when wet with water/tan δ when dry >1.00
(3) 40% modulus at 70° C. after tensile test/40% modulus at 70° C. before tensile test ≥0.45 where
E* and tan δ refer to a complex modulus of elasticity and a loss tangent, respectively, after 30 minutes from the start of measurement under the conditions of a temperature of 30° C., an initial strain of 10%, a dynamic strain of 1%, a frequency of 10 Hz, an elongation mode, and a measurement duration of 30 minutes;
40% modulus at 70° C. after the tensile test refers to a tensile stress at an elongation of 40% determined after extension of 50% at 70° C., releasing the stress, and then measuring the tensile stress at an elongation of 40% at 70° C. in accordance with JIS K 6251:2010; and
40% modulus at 70° C. before a tensile test refers to a tensile stress at an elongation of 40% measured before the tensile test at 70° C. in accordance with JIS K 6251:2010.
C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08C 19/28 - Reaction with compounds containing carbon-to-carbon unsaturated bonds
C08C 19/36 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with oxygen or oxygen-containing groups with carboxy radicals
C08F 279/06 - Vinyl aromatic monomers and methacrylates as the only monomers
The present disclosure is a two-wheeled vehicle tire for running on rough terrain having a tread portion. The tread portion includes a first tread edge, a second tread edge, a tread development width, a tire equator, a crown region, and side regions. The tread portion includes a plurality of crown blocks and a plurality of outer blocks. Each of the outer blocks has a ground contacting surface at least provided with a narrow groove or configured as a stepped surface including a base surface and a protruding surface locally protruding outward in a block height direction with respect to the base surface. Each of the crown blocks has a ground contacting surface provided with the narrow groove and configured as a non-step surface without the protruding surface.
