The invention relates to roller cylinders (1) for a planetary roller extruder (50) which is made of modules (M), having an especially advantageous length (LW), to transition elements (20, 30) between the roller cylinders (1) in the form of toothed cylindrical intermediate rings (20) or non-toothed cylindrical thrust rings or dispersion rings (30) likewise having an especially advantageous length (LÜ, LAD), to a planetary roller extruder (50) which is made of modules (M) and comprises said components (1, 20, 30), and to a method (100) for assembling such a planetary roller extruder (50).
The present invention relates to a method (100) for oiling a plastic compound (PC) comprising at least one polymer with a chloride content and to a corresponding plastic processing apparatus (1) to execute the method, comprising the steps of providing (110) the plastic compound (PC) to the plastic processing apparatus (1); melting (120) the plastic compound (PC) by heating the plastic compound (PC) to a predetermined melting temperature and mixing and/or homogenizing the melted plastic compound (PC) in one or more processing units (2) for melting, mixing and/or homogenizing; chemically separating chlorine (130) from the chlorine containing polymer via applying a secession temperature higher than the melting temperature and via a dwell time of the melted plastic compound (PC) in a secession unit (3) of the plastic processing apparatus (1); extracting chlorine (150) out of the secession unit (3) or out of a subsequent unit (4) in process direction (PD) behind to the secession unit (3); and providing (160) the melted plastic compound (PC) with at least reduced chlorine content as a petrochemical feedstock (PF) for further processes.
C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
C10G 1/00 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Metal treating; Plastics processing and conversion for others; Extruding of plastics for others Engineering design services; Mechanical engineering; Engineering services for the design of machinery
4.
MIXING PLASTIC WITH WOOD PARTICLES IN AN EXTRUSION PLANT
The invention relates to a method for producing mixtures of wood particles, plant particles and plastic in a planetary roller extruder, said mixtures being produced by transforming the plastic separately into a molten form before combining the materials.
B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
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
B29C 48/285 - Feeding the extrusion material to the extruder
B29C 48/385 - Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
B29C 48/425 - 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 using two or more parallel screws, e.g. twin screw extruders using three or more screws
B29C 48/38 - Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
B29C 48/49 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
A method for producing thermally crosslinkable polymers in a planetary roller extruder is presented. The planetary roller extruder has a filling part and a compounding part made of a roller cylinder region that comprises at least two, preferably at least three coupled roller cylinders, planetary spindles of which are driven by a common central spindle. The polymers are supplied in a plasticized state. The filling part is supplied with a vacuum. The flow temperatures of the central spindle and the at least two roller cylinders under a vacuum are set such that the polymers to be degassed remain in the plasticized state. One or more liquids, such as thermal crosslinkers, crosslinking accelerators, dye solutions, or dye dispersions, are metered to the plasticized polymers downstream of the vacuum degassing, preferably in a continuous manner. Finally, the resulting mixture is directly supplied to a coating assembly.
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
B29C 48/35 - Extrusion nozzles or dies with rollers
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
B29C 35/04 - Heating or curing, e.g. crosslinking or vulcanising using liquids, gas or steam
B29C 48/38 - Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
B29C 48/84 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
B29C 48/80 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
6.
Planetary roller extruder with a degassing section
A planetary extruder for producing and processing polymers includes a degassing section. The extruder includes a housing and a bushing arranged therein. The bushing has an internal toothing with a pitch diameter and a root circle. An externally toothed central spindle is arranged within the housing. Planetary spindles rotate about the central spindle between the central spindle and the bushing. A heat transfer fluid is guided through fluid channels which extend helically along an outer surface of the bushing and guide the heat transfer fluid axially. A degassing opening is provided to which a negative pressure is applied for degassing. A minimum radial thickness (t) of the bushing between the root circle of the internal toothing on an inside of the bushing and a bottom of the fluid channels on an outside of the bushing is selected based on the pitch diameter (d) of the internal toothing.
B29C 48/285 - Feeding the extrusion material to the extruder
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
B29C 48/685 - Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
B29C 48/80 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
B29C 48/875 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
7.
Mixing of extrudable plastics with small amounts of other substances
A main extruder and a side arm extruder are used in the extrusion of plastics with small amounts of additives or other small substances to be admixed. A minor portion of the plastic material is premixed with small quantity additive substances in a side arm extruder. The premixed material is discharged from the side arm extruder into the main extruder and there mixed with a major portion of feed material.
B22C 5/00 - Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
B01F 7/30 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with stirrers having planetary motion
C08J 3/20 - Compounding polymers with additives, e.g. colouring
According to the invention, the 3D printing of blanks is carried out by means of an extruder, in which a solid plastic is melted, wherein the melt is discharged through a completely or partially closable or completely or partially opening nozzle, and the melt, which is not discharged from the nozzle, is recirculated in the extruder.
B29C 48/40 - 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 using two or more parallel screws, e.g. twin screw extruders
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
A planetary roller extruder section forms a feed part of an extruder. The planetary roller extruder has an internally toothed housing and an externally toothed central spindle disposed centrally within and at a distance from the housing. Planetary spindles are arranged to rotate in a void between the central spindle and the housing. Each planetary spindle has an external toothing meshing with both the housing and the central spindle. At least one planetary spindle has two axially spaced areas with less than a full set of teeth. Those axially spaced areas include a first area having a first number of teeth and a second area having a second number of teeth. The second number of teeth is less than a full set of teeth and more than the first number of teeth.
B29C 48/285 - Feeding the extrusion material to the extruder
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
The invention relates to a method for producing and processing polymers or mixtures of polymers and additives, in particular additives which have a low apparent density, by means of extrusion. The extruder consists of multiple planetary roller extruder modules (3.1, 3.2, 3.3, 4) which are arranged one behind the other in the direction of extrusion, wherein the planetary roller extruder module provided for the introduction of the additives has a housing which has a radially enlarged cavity compared to the other planetary roller extruder modules such that a larger quantity of additive can be received in the cavity.
B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
Various measures increase the cooling effect on a planetary roller extruder section/module. Those measures include a choke being arranged at an outlet of the planetary roller extruder section or module, a distance between centerlines of adjacent planetary spindles being at least equal to an outer diameter of the planetary spindles, providing a pressurized melt supply, having a cooling section composed of several sections/modules, providing at least one section/module in which a flow, during melt supply is converse to the conveying direction of the extruder, and providing cooling tubes arranged within the central spindle.
B01F 27/232 - Mixers with rotary stirring devices in fixed receptaclesKneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
B29C 48/455 - Screws arranged to convey material towards each other, e.g. separate screws arranged after each other and feeding in opposite directions
B29C 48/375 - Plasticisers, homogenisers or feeders comprising two or more stages
B29C 48/425 - 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 using two or more parallel screws, e.g. twin screw extruders using three or more screws
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
B29C 48/365 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B29B 7/46 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
B29C 48/39 - Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
B29C 48/84 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
B29C 48/285 - Feeding the extrusion material to the extruder
The invention relates to an enlargement of the cavity volume in a planetary roller extruder portion/module in order to improve the conditions for degassing (20).
B29C 48/80 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
The invention relate to an extruder, wherein the feedstock is drawn into the extruder via a filling part, wherein the material feed is formed by a planet roller extruder section, which comprises a central spindle (107, 204) revolving in a housing (100, 201) and planet spindles (106, 203, 321, 322), wherein the housing (100, 201) is internally toothed or has an internally toothed sleeve (109) and surrounds the central spindle (107, 204) at a distance, and the planet spindles (106, 203, 321, 322) revolve around the central spindle (107, 204) in the interspace between the central spindle (107, 204) and the housing (100, 201) and mesh both with the central spindle (107, 204) and with the housing internal toothing (205), characterized by at least one planet spindle (249, 16) which has a different tooth reduction, at least in two regions.
According to the invention, particularly novel larger toothing modules and smaller numbers of teeth for the planetary spindles are used in an extrusion plant comprising a planetary roller extruder or a planetary roller extruder section.
A planetary roller extruder includes a housing with an internal housing toothing. A central spindle is disposed in the housing and has an external central spindle toothing. A plurality of planetary spindles are disposed about the central spindle and in the housing. Each of the planetary spindles has an external planetary spindle toothing configured to mesh with the internal housing toothing and the external central spindle toothing. A drive is configured to rotate the central spindle. The drive includes a drive journal connected to the central spindle to permit transmission of a driving force from the drive to the central spindle. The drive journal includes a bore. The bore has internal projections configured to engage with the external central spindle toothing to secure the central spindle to the drive journal by a screw-type connection.
B29C 48/425 - 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 using two or more parallel screws, e.g. twin screw extruders using three or more screws
B29C 48/685 - Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
B29C 48/80 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
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
B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
B29C 48/625 - Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
The invention relates to the production of PSA in a planetary gear extruder. During filling and after passing a passage on a dispersing ring using a lateral arm extruder, the products are degassed.
B29C 48/425 - 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 using two or more parallel screws, e.g. twin screw extruders using three or more screws
B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
B29C 48/285 - Feeding the extrusion material to the extruder
B29C 48/80 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
B29K 21/00 - Use of unspecified rubbers as moulding material
B29K 105/00 - Condition, form or state of moulded material
B29K 7/00 - Use of natural rubber as moulding material
A method of devulcanizing crosslinked rubber uses a planetary roller extruder with a central spindle, planetary spindles, a housing, and a feed part. The method includes feeding vulcanized rubber through the feed part into the housing, rotating the central spindle about its rotational axis and thereby causing the planetary spindles to rotate about their rotational axes and revolve about the central spindle. This generates mechanical and thermal stress on the vulcanized rubber by kneading and/or crushing of the vulcanized rubber, breaking or destroying the molecular chains or bonds of the vulcanized rubber. The method further includes at least one of (A) adding particles of the vulcanized rubber eccentrically to the center of the planetary roller extruder module between the planetary spindles and (B) mechanically pressing particles of the vulcanized rubber between the planetary spindles with a crammer feeder.
B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics
C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
The invention relates to central spindles on planetary roller extruders, which central spindles can be screwed into correspondingly toothed journals of the drive.
The invention relates to the devulcanization of waste rubber in a planet roller extruder wherein a separate heating zone is provided with its own planet roller module and its own temperature control and/or a start phase with its own planet roller extruder and its own temperature control is provided at the beginning of the devulcanization area .
B29C 47/42 - using sub-screws, e.g. planetary screws
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
The invention relates to the production of PSA in a planetary gear extruder. During filling and after passing a passage on a dispersing ring using a lateral arm extruder, the products are degassed.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
23.
SPARK EROSION OF THE INTERNAL TOOTHING OF PLANETARY ROLLER EXTRUDERS
According to the invention, the circumference of electrodes used for the spark erosion of planetary roller extruders is provided with a skewed and/or rounded portion and is automatically replaced under certain circumstances. Also, the dielectric is drawn off at the bottom and fresh, cooled dielectric is added from the top.
The invention relates to an extruder having a filling part which can separate fine-grained input materials from the air by means of a filter, by which they are conveyed to an extruder in order to be able to introduce the particles into the extruder. According to the invention, the filter is connected to a suction line and consists of at least two porous filter discs which are connected to each other.
A process for the extrusion of plastics, such as plastics that tend to adhere or stick to parts of an extruder, using a planetary roller extruder in the feed part.
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
Method of devulcanizing rubber and/or elastomers without the need for a chemical agent, in which method the vulcanized rubber and/or elastomers are fed into a planetary roller extruder, which planetary roller extruder has a housing, a central spindle, and at least one group of planetary spindles. Mechanical and thermal stress is generated on the vulcanized rubber and/or elastomers by kneading and/or crushing the vulcanized rubber and/or elastomers using the central spindle and the planetary spindles. The mechanical and thermal stress alone is sufficient to break or destroy the molecular chains or bonds of the vulcanized rubber and/or elastomers.
C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
B29C 47/42 - using sub-screws, e.g. planetary screws
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/88 - Heating or cooling the stream of extruded material
27.
Planetary roller extruder with planet spindles and contact ring
A planetary roller extruder with planetary spindles and stop ring. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. § 1.72(b). As stated in 37 C.F.R. § 1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
B29B 7/52 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
The invention relates to an extruder that consists of a central spindle, which rotates in a housing, and planetary spindles. The housing has an inner toothing and surrounds the central spindle at a distance therefrom. The planetary spindles rotate about the central spindle in the intermediate space between the central spindle and the housing and in the process mesh with both the central spindle as well as the housing inner toothing. The planetary spindles in the inlet region of the extrusion material are designed to at least introduce the material without applying pressure and are designed at least partly as transport spindles, and/or the housing inner toothing is flattened in order to form an inlet funnel in the toothing at least in the region which adjoins the inlet opening of the housing casing and extends in the rotational direction of the central spindle.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/42 - using sub-screws, e.g. planetary screws
29.
PLANETARY ROLLER EXTRUDER WITH PLANET SPINDLES AND CONTACT RING
On an extrusion system with a planetary roller extruder or planetary roller extruder section or planetary roller extruder module (22, 23, 24), the rotational speed of the central spindle is increased according to the invention by several times the otherwise known maximum rotational speeds, in order to achieve a fine dispersion.
B29C 47/42 - using sub-screws, e.g. planetary screws
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
B29C 47/08 - Component parts, details or accessories; Auxiliary operations
Method for producing a blend of a plastic first material and a wood or other plant second material in a planetary roller extrusion arrangement. The method involves feeding particles of the second material into a feed, which particles of the second material have a maximum diameter of 1 mm. Particles of the first material are fed into a melting device and liquefied into a plastic melt. The plastic melt is fed into a pump. Particles of the second material are moved into a planetary roller part of the extrusion arrangement, while the plastic melt is also pumped in. The particles of the second material are then blended with the plastic melt to form a blend that is at least 60% by weight of the second material.
D01F 1/02 - Addition of substances to the spinning solution or to the melt
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B27N 3/28 - Moulding or pressing characterised by using extrusion presses
Method of devulcanizing rubber and/or elastomers without the need for a chemical agent, in which method the vulcanized rubber and/or elastomers are fed into a planetary roller extruder, which planetary roller extruder has a housing, a central spindle, two groups of planetary roller spindles, and a dispersion ring disposed about the central spindle and between the two groups of planetary spindles. Mechanical and thermal stress is generated on the vulcanized rubber and/or elastomers by kneading and/or crushing the vulcanized rubber and/or elastomers using the central spindle and the planetary spindles, and by forcing the vulcanized rubber and/or elastomers through the dispersion ring, which is designated to substantially restrict passage of the vulcanized rubber and/or elastomers therethrough. The mechanical and thermal stress alone is sufficient to break or destroy the molecular chains or bonds of the vulcanized rubber and/or elastomers.
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
B29C 47/42 - using sub-screws, e.g. planetary screws
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/08 - Component parts, details or accessories; Auxiliary operations
B29C 47/78 - Heating or cooling the material to be extruded or the stream of extruded material
B29C 47/88 - Heating or cooling the stream of extruded material
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus
According to the invention blends of wood particles and plant particles and plastic are generated in an extruder thereby that the plastic is converted separately into a liquid melt before the joining takes place.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
D01F 1/02 - Addition of substances to the spinning solution or to the melt
According to the invention, mixtures of wood particles, plant particles and plastic are produced in an extruder such that the plastic is separately transformed into a hot melt form before introduction takes place.
According to the invention, mixtures of wood particles, plant particles and plastic are produced in an extruder such that the plastic is separately transformed into a hot melt form before introduction takes place.
B29C 48/15 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
B29C 70/58 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only
