WO2011135745A1 - Procédé de production de granulé composite pour moulage par extrusion, et granulé composite pour moulage par extrusion produite par le procédé - Google Patents

Procédé de production de granulé composite pour moulage par extrusion, et granulé composite pour moulage par extrusion produite par le procédé Download PDF

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Publication number
WO2011135745A1
WO2011135745A1 PCT/JP2010/070281 JP2010070281W WO2011135745A1 WO 2011135745 A1 WO2011135745 A1 WO 2011135745A1 JP 2010070281 W JP2010070281 W JP 2010070281W WO 2011135745 A1 WO2011135745 A1 WO 2011135745A1
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WIPO (PCT)
Prior art keywords
extrusion
extruder
composite
pellets
molding
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PCT/JP2010/070281
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English (en)
Japanese (ja)
Inventor
武恭 菊池
和正 守田
東　浩二
中村　雄一郎
Original Assignee
Ｗｐｃコーポレーション株式会社
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Application filed by Ｗｐｃコーポレーション株式会社 filed Critical Ｗｐｃコーポレーション株式会社
Priority to US13/641,536 priority Critical patent/US8871345B2/en
Priority to RU2012150992/05A priority patent/RU2012150992A/ru
Priority to AU2011246076A priority patent/AU2011246076B2/en
Priority to EP11775054.7A priority patent/EP2565004B1/fr
Priority to CN2011800215652A priority patent/CN102869484A/zh
Priority to CA2796753A priority patent/CA2796753C/fr
Priority to MYPI2012004705A priority patent/MY155443A/en
Priority to BR112012027401A priority patent/BR112012027401A2/pt
Priority to KR1020127028398A priority patent/KR20130020783A/ko
Priority to PCT/JP2011/060269 priority patent/WO2011136273A1/fr
Publication of WO2011135745A1 publication Critical patent/WO2011135745A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0027—Cutting off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—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
    • B29C48/40—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 or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Definitions

  • the present invention relates to a method for producing a composite pellet used for extrusion molding of a wood molded product obtained by molding a thermoplastic resin containing a large amount of wood powder, and to a composite pellet produced by the method, and molding a wood molded product.
  • the present invention relates to a method for producing a composite pellet for extrusion suitable for use in extrusion foam molding, and a composite pellet for extrusion produced by the method.
  • a wooden molded product obtained by extruding a molded dough obtained by melting and kneading together thermoplastic resin, wood powder, and other auxiliary materials added as necessary has the texture of wood.
  • thermoplastic resin, wood powder, and other auxiliary materials added has the texture of wood.
  • thermoplastic resin, wood powder, and other auxiliary materials are directly injected into the cylinder of the extruder provided in the extrusion molding equipment for manufacturing the wooden molded products.
  • a large amount of gas is generated in the cylinder of the extruder due to the wood acid and moisture contained in the wood powder, and the extrusion cannot be performed properly.
  • thermoplastic resin, wood flour, and other auxiliary materials are melted and kneaded until they are uniformly dispersed, a large extruder can be used. Is required.
  • the raw materials are pre-kneaded and compounded in advance, and the compounded raw materials are granulated into pellets without directly feeding the raw materials into the extruder.
  • a pellet in which a plurality of raw materials are combined is referred to as a “composite pellet”), and the composite pellet obtained in this way is used as a molding material for extrusion molding of a wooden molded product. It is generally used.
  • the kneaded material extruded by the extruder is introduced into a die to form a sheet or a strand (round string).
  • a method of producing a chip-shaped or pellet-shaped extruded material by cutting an extruded sheet-shaped or strand-shaped kneaded material.
  • the raw material is homogeneously melt-kneaded and granulated to pelletize the pre-kneaded molten material.
  • Pellets are used as molding materials in the production of woody molded products.
  • the properties or properties given to composite pellets in these pre-kneading and granulation processes are performed using these composite pellets. This greatly affects the workability in the molding process and the quality of the final wood molded product.
  • the properties required for composite pellets used in the manufacture of wood-molded products include that the individual pellet particles are separated and independent (the pellet particles are not fused together) In addition to being required to have uniform physical properties such as shape, size, and density between pellets, this molding material (the pellet's It is necessary that the aggregate is manufactured so as to have a predetermined bulk density (for example, when the pellets are stacked, an appropriate gap is formed between the pellets).
  • the composite pellet does not satisfy any one of the above requirements, the composite pellet and the composite pellet are melted when the wood pellet is extruded using such a composite pellet. It becomes difficult to obtain a stable and uniform flow of the material in the extruder, and the defect rate of the obtained wood molded product increases.
  • extrusion foam molding is performed using composite pellets not satisfying the above conditions
  • extrusion foam molding is performed using composite pellets satisfying the above conditions.
  • it is difficult to reduce the specific gravity due to the addition of the foaming agent and it has been confirmed that it is difficult to reduce the weight of the wooden molded product. Therefore, when extrusion foaming is performed using composite pellets that do not satisfy the above requirements, a large amount of foaming agent needs to be added, resulting in an increase in manufacturing cost.
  • the composite pellets used for the production of the wooden molded product are required to have the above-mentioned requirements, but as described in Patent Document 1, the kneading and manufacturing are performed by a Henschel mixer, a cooling mixer, and a cutter.
  • the shape and size of each composite pellet cannot be accurately controlled, resulting in large variations in shape and size between the composite pellets.
  • the strands extruded from the adjacent nozzle holes approach each other due to such expansion, and are easily brought into contact with each other, and the pellets obtained by cutting the strands easily form a mass in which a plurality are fused.
  • the present invention has been made to eliminate the above-described drawbacks of the prior art, and a raw material containing thermoplastic resin and wood powder as main raw materials is melt-kneaded by an extruder and extruded in a strand form from a die nozzle.
  • a raw material containing thermoplastic resin and wood powder as main raw materials is melt-kneaded by an extruder and extruded in a strand form from a die nozzle.
  • the method for producing a composite pellet for extrusion molding which is granulated by cutting the extruded strand in a predetermined length, there is no fusion between the obtained pellets, and between the pellets.
  • the diameter of the pellets obtained by suppressing the expansion due to the ballast effect can be controlled to be less than the diameter of the nozzle hole.
  • the bulk density of the molding material can be reduced.
  • a method for producing composite pellets that can be easily controlled, it is easy to obtain a stable and uniform flow of molten dough in the extruder. It is possible to reduce the defective rate of products, and in particular for extrusion foam molding, it is easy to control the foaming by uniformly dispersing the foaming gas and to prevent the generation of voids inside the molded product. It aims at providing the composite pellet for shaping
  • the method for producing a composite pellet for extrusion molding is a method for producing a composite pellet used as a molding material in the extrusion molding of a wood molded product mainly composed of a thermoplastic resin and wood powder.
  • a molten material obtained by melting and kneading a raw material containing a thermoplastic resin and wood powder with an extruder 42 is extruded in a strand form through nozzle holes 43a provided in a large number of die nozzles 43 attached to the tip of the extruder 42.
  • the extrusion amount Q of the extruder 42, the diameter D of each nozzle hole 43a, and the number n of the nozzle holes 43a are set so that the linear velocity ( ⁇ d) defined by the following equation is in the range of 12 to 50. It is characterized (claim 1).
  • the blending ratio of the thermoplastic resin and the wood powder can be set to 70 to 30 mass% with respect to 30 to 70 mass% of the thermoplastic resin (claim 2).
  • the molten material is introduced into the nozzle hole 43a at 170 to 250 ° C., more preferably 200 to 230 ° C. (Claim 3).
  • the molten material strand is preferably cut into a length of 2 to 5 mm (claim 4).
  • the composite pellet for extrusion molding of the present invention is a composite pellet produced by any of the methods described above (Claim 5).
  • This composite pellet may be used alone for extrusion molding, but a molding material and a foaming agent are charged into an extruder cylinder provided in an extrusion molding apparatus for extruding a wood molded product. In the extrusion foaming performed in this manner, the composite pellet of the present invention can be used as the molding material.
  • the composite pellet of the present invention preferably has a bulk density of 0.60 g / cm 3 or more when filled in a non-pressurized state in a predetermined volume of container (Claim 7).
  • the strands thus obtained with a predetermined length it becomes easy to produce pellets having a substantially constant diameter not more than the diameter of the nozzle hole 43a, and by reducing the size of each pellet,
  • the bulk density of the molding material can be easily increased to a predetermined value, for example, 0.68 g / cm 3 or more, and further, the expansion of the strand can be suppressed and the shape can be made constant.
  • the size, shape, density, etc. could be easily made uniform.
  • the foaming control is easy and the foaming gas is controlled.
  • the foaming gas is controlled.
  • thermoplastic resin and the wood flour are 70 to 30 mass% of wood flour with respect to 30 to 70 mass% of the resin and the wood flour is filled at a high content. did it.
  • the molten resin is introduced into the nozzle hole 43a at 170 to 250 ° C., more preferably 200 to 230 ° C., it is possible to more reliably suppress the expansion of the strand extruded from the nozzle hole 43a. I was able to.
  • the pellet when the length of the strand, and thus the length of the pellet, is increased, the pellet is easily deformed by bending in the length direction and the shape is likely to be uneven between the pellets. When cutting, it was possible to prevent the occurrence of such deformation and to obtain pellets with a substantially uniform shape.
  • FIG. 5 is a cross-sectional view of an extrusion die attached to the extruder tip of the extruder of FIG. 4, (A) is a side view, (B) is a plan view, and (C) is a direction of the arrow CC in (B).
  • Each cross section is shown.
  • 3 is a photograph showing the particle structure of the composite pellet of Example 1.
  • 3 is a photograph showing the particle structure of the composite pellet of Example 2.
  • 4 is a photograph showing the particle structure of the composite pellet of Example 3.
  • 6 is a photograph showing the particle structure of the composite pellet of Example 6.
  • 3 is a photograph showing the particle structure of the composite pellet of Comparative Example 1.
  • 4 is a photograph showing the particle structure of the composite pellet of Comparative Example 2.
  • 6 is a photograph showing the particle structure of the composite pellet of Comparative Example 3.
  • the composite pellets of the present invention used for extrusion molding of wood-molded products are mainly made of thermoplastic resin and wood powder, and if necessary, fillers such as talc, pigments for coloring, reinforcing agents, paraffin Manufactured by adding wax and other auxiliary materials.
  • thermoplastic resin that is one of the main raw materials of the composite pellet of the present invention
  • various thermoplastic resins can be used, preferably polyolefin resins such as polypropylene (PP) and polyethylene (PE),
  • a resin containing the polyolefin resin as a main component hereinafter, a polyolefin resin and a resin containing the polyolefin resin as a main component are collectively referred to as “polyolefin resin”
  • polyolefin resin a resin containing the polyolefin resin as a main component
  • thermoplastic resins may be used alone, or a plurality of thermoplastic resins may be mixed and used.
  • these thermoplastic resins are collected in a state where a plurality of thermoplastic resins are mixed.
  • waste plastic or the like it is also possible to use waste plastic or the like as a raw material, but in the present embodiment, among the thermoplastic resins described above, a polyolefin resin, more specifically, polypropylene (PP) is used.
  • PP polypropylene
  • the types of polypropylene include homopolymers, random copolymers, and block copolymers.
  • any of these polypropylenes can be used, and for example, the container recycling method (so-called “container”).
  • the container recycling method so-called “container”.
  • Any of the polypropylene recovered in accordance with the “Re-method”) or a mixture of various polypropylenes can be used.
  • thermoplastic resin used in the present invention is preferably one having an MI (melt index) in the range of 0.5 to 10 (g / 10 min).
  • MI melt index
  • a plurality of thermoplastic resins having different MI are used. It is good also as what obtains resin of MI which becomes within the above-mentioned numerical range by mixing.
  • Wood flour is the other major component of wood molding materials. In addition to various types of commercially available wood flour, unused wood, used building waste, sawdust generated during wood processing, etc. It may be obtained by crushing waste materials using a crusher, cutter or mill.
  • the type of wood used is not particularly limited, and there is no structural problem even if multiple types of wood are mixed, but considering the finish of the final wood molded product, the colors are aligned to some extent. It is preferable to use one.
  • wood flour to be used various types can be used as long as they have a particle size of 1,000 ⁇ m or less, preferably those having a particle size of 150 to 200 ⁇ m.
  • the wood flour is preferably dried before blending with other raw materials from the viewpoint of improving familiarity with the thermoplastic resin and preventing the generation of water vapor during heating and kneading, and preferably contains 1 mass% or less of moisture. Use what has been dried.
  • a preferable blending ratio of this wood powder and the above-mentioned thermoplastic resin is 30 to 70 mass% / 70 to 30 mass% of wood powder / thermoplastic resin.
  • Orientation in the flow direction is obtained in a fiber aggregate in which grains or fibers having an aspect ratio (length / diameter) of 1.5 or more account for 80% or more.
  • raw materials for the molding material of the present invention fillers such as talc, coloring pigments, reinforcing agents, paraffin wax and the like can be added in addition to the aforementioned wood flour and thermoplastic resin.
  • paraffin wax so that it becomes 1 to 5 mass% with respect to the whole molding material to be obtained. If it is less than 1 mass%, the effect cannot be obtained, and if it exceeds 5 mass%, the paraffin wax is raised on the surface and the moldability is lowered.
  • talc is added to improve the strength of wood molded products such as the final wood composite board, and can be added in an amount of 5 to 25 mass% with respect to the total mass of the molding material. If the amount of talc added is small relative to the amount, strength cannot be improved. Conversely, if the amount added is too large, brittleness will appear and the strength will decrease.
  • particle size of talc to be added a relatively wide range of particles can be used, and preferably an average particle size of about 3 to 50 ⁇ m is used.
  • the pigment is added to color the finally obtained wooden synthetic board, and various pigments can be added in various formulations according to the color to be obtained in the final product.
  • the pigment was added in an amount of about 3 mass% with respect to the entire molding material.
  • a reinforcing agent as the amount of the additive.
  • a reinforcing agent As described above, in this embodiment using polypropylene as the thermoplastic resin as the main raw material, maleic acid-modified polypropylene is used as this reinforcing agent. It is added to improve the bonding between wood flour and resin.
  • This reinforcing agent is not effective if the amount added is too small, but the effect increases as the amount added increases, but the cost increases, so about 0.3 to 2.0 mass% as an example of the total molding material obtained. Is preferable.
  • the composite pellet produced in this way is used as a molding material when extruding a wooden molded product such as a wooden synthetic board.
  • the production of composite pellets by melting and kneading the raw materials and granulating can be performed using the composite pellet manufacturing apparatus 40 shown in FIG.
  • a composite pellet manufacturing apparatus 40 shown in FIG. 1 includes a quantitative supply apparatus 41 that quantitatively supplies raw materials such as thermoplastic resin (PP), wood powder, talc, pigment, reinforcing material, and paraffin wax by a loss-in-weight method, and the like.
  • a screw-type extruder 42 that melts and kneads and extrudes the raw material supplied by the quantitative supply device 41 while heating is provided, and a number of small holes (nozzle holes 43a) are formed at the tip of the cylinder 42a of the extruder 42.
  • a die nozzle 43 is attached, and a strand of molten material is extruded into hot water through a nozzle hole 43a of the die nozzle 43, and a predetermined length (2 to 5 mm as an example) is provided by a cutter blade 44a of a cutter 44 that rotates the strand.
  • Composite pellets are produced by the underwater hot-cut method, which is cut every time.
  • a plurality of nozzle holes 43a are arranged in the peripheral edge portion of the end surface of the cylindrical die nozzle 43, and the center of the end surface of the die nozzle 43 is a rotation center.
  • extruder 42 various known ones can be used, and a single screw extruder can be used, but a twin screw extruder is preferably used.
  • the twin-screw extruder is an extruder having two screws 42b that rotate with the screw threads and the screw grooves formed on the screw element 42c meshing with each other.
  • the two screws 42b are It uses the one that rotates in the same direction and gives the material a shearing force to promote heat generation and melt the resin.
  • the molten material melted and kneaded by the extruder 42 is preferably introduced into the nozzle hole 43a of the aforementioned die nozzle 43 so that it can be introduced at a temperature of 170 ° C. to 250 ° C., preferably 200 ° C. to 230 ° C.
  • the temperature of the cylinder 42a is controlled.
  • the temperature is the temperature of the molten material
  • the temperature shown in FIG. 5 is the set temperature of the cylinder of the extruder and is different from the temperature of the molten material. Since the molten material generates shear heat due to external force received from the screw 42b in addition to the heat received from the heater of the cylinder 42a, the temperature of the molten material becomes higher than the set temperature of the cylinder.
  • the composite pellets obtained as described above are collected after being dehydrated by the centrifugal separator 45 to obtain composite pellets as a molding material used for extrusion molding of a wooden molded product.
  • the linear velocity ⁇ d representing how much distance the molten resin moves in each nozzle hole 43a provided in the die nozzle 43 is represented by:
  • the extrusion rate (Q) of the extruder, the diameter (D) of each nozzle hole, and the number (n) of the nozzle holes are adjusted so as to be in the range of 12 to 50 cm / sec, more preferably 16 to 45 cm / sec.
  • Q Extruder output (kg / Hr)
  • D Diameter of each nozzle hole (mm)
  • n number of nozzle holes
  • ⁇ m density of molten resin (g / cm 3 )
  • the extrusion rate (g / sec) per second of the extruder is Q ⁇ 1000/3600
  • the cross-sectional area (cm 2 ) in the width direction of the nozzle hole is (D / 20) 2 ⁇ Therefore, the sum of the cross-sectional areas in the width direction of the number n of nozzle holes is (D / 20) 2 ⁇ ⁇ n It becomes.
  • ⁇ d (cm / sec) (Q ⁇ 1000/3600) / [(D / 20) 2 ⁇ ⁇ ⁇ m ⁇ n] ⁇ 35.4Q / D 2 ⁇ m ⁇ n It becomes.
  • the bulk density ⁇ m of the molten material is 1.15 (g / cm 3 ).
  • the linear velocity ⁇ d of the molten material passing through the nozzle hole 43a is a velocity ( ⁇ d ⁇ 12) that is lower than the predetermined range of 12 to 50 cm / sec. In this case, the orientation effect of the wood flour due to the flow of the molten material is small.
  • the wood flour in the strand is randomly oriented as shown by the arrows in FIG. 3 (A) due to the small orientation of the wood flour and the volume expansion due to the ballast effect. Does not have a predetermined orientation.
  • ⁇ d indicating the flow rate of the molten material is a speed exceeding 12 to 50 cm / sec, which is the predetermined range of the present application ( ⁇ d> 50)
  • the wood in the molten material passes through the nozzle hole 43a.
  • the powder is oriented with the fiber length direction in the flow direction of the molten material.
  • the molten material that has passed through the nozzle hole 43a is prevented from expanding due to the ballast effect.
  • ⁇ d which is the flow rate of the molten resin in the nozzle hole 43a
  • ⁇ d which is the flow rate of the molten resin in the nozzle hole 43a
  • the wood flour is oriented in the flow direction of the molten material, and at this speed, the molten material that has passed through the nozzle hole 43a can be prevented from expanding due to the ballast effect, and the diameter of the extruded strand is less than the diameter D of the nozzle hole 43a. It becomes the size of.
  • the strand that has passed through the nozzle hole 43a is not affected by slight scratches or irregularities that are inevitably generated near the outlet of the nozzle hole 43a when the die nozzle 43 is manufactured.
  • the strands that become stiff due to the wood powder oriented with the flow direction of the molten resin as the length direction are easily pushed out in the extension direction of the nozzle holes.
  • the wood powder has a predetermined orientation in the extruded strand, but the strand extruded from the nozzle hole is curled as described above. As a result, the shape of the pellet formed by cutting this may vary.
  • the strand coming out of the nozzle hole becomes a ballast because the strand becomes stiff due to the orientation of the wood flour. Swelling is suppressed by the effect, and the orientation of the wood flour makes it possible to cut the strands cleanly during cutting, making it easy to obtain pellets with a uniform shape. Yes.
  • the strand extruded under this condition does not expand or run out, so that it is difficult to fuse with the strand extruded through the adjacent nozzle hole 43a. , Individual pellets can be easily obtained.
  • the composite pellet obtained as described above is molded into a woody molded product of a predetermined shape as it is or through extrusion (foaming) molding with a foaming agent.
  • the manufactured composite pellets Prior to performing such extrusion molding, the manufactured composite pellets are sufficiently dried using a dryer 47 or the like as shown in FIG. 4 as necessary.
  • a drying method is not particularly limited, in the present embodiment, as an example, it was dried to the above water content in a hot dryer at a temperature of 120 ° C. over 2 hours.
  • Foaming Agent As described above, when the composite pellet obtained by the method of the present invention is used for extrusion foaming, the composite pellet is put together with the foaming agent into an extruder for extrusion molding.
  • foaming agents used in such foam molding include decomposition with CO 2 , N 2 , Freon, propane, etc., which are generally volatile foaming agents (gas-based), including volatile foaming agents that are gases or liquids.
  • the foaming agent may be used, and any of these foaming agents may be used, and various commercially available ones may be used.
  • a degradable foaming agent is used.
  • Decomposable foaming agents include inorganic compounds, azo compounds, sulfonyl hydrazide compounds, nitroso compounds, azide compounds, etc., but they can be easily dispersed to thermoplastic resins that are the main raw materials of molding materials. Any foaming agent may be used as long as it does not dissolve and does not give unnecessary coloration or the like to the obtained wood foam molded article.
  • a pellet-shaped foaming agent called a “master batch” in which a foaming agent is added to the carrier resin at a high concentration is commercially available, and such a foaming agent may be used.
  • a master batch was used in which the carrier resin was PE and the foaming agent was sodium bicarbonate belonging to the inorganic compound system.
  • the foaming agent is added in a necessary amount according to the gas generation amount of the foaming agent to be used, the foaming degree of the foamed molded product to be produced, etc.
  • the preferable addition amount of the foaming agent (master batch) in this embodiment is an example.
  • the total of the composite pellets and the foaming agent is 0.3 to 5 mass%, more preferably 0.5 to 3 mass%, with 100 mass%.
  • the composite pellets to which the foaming agent has been added in this manner are then continuously introduced into a screw type extruder 12 provided in the extrusion molding apparatus 11, and melted and kneaded while being heated.
  • a screw type extruder 12 provided in the extrusion molding apparatus 11, and melted and kneaded while being heated.
  • the extruded dough is introduced into the extrusion die 20, it is introduced into the molding die 30 following the extrusion die 20, molded into a predetermined shape, and cooled and solidified to obtain a woody foam molded body having a desired shape. Can be obtained.
  • Extrusion molding apparatus Various apparatuses can be used as the extrusion molding apparatus used for the production of the wood foam molded body. As an example, the configuration of the extrusion molding apparatus 11 used for the extrusion molding using the composite pellet of the present invention. An example will be described with reference to the drawings.
  • the extrusion molding apparatus 11 shown in FIG. 4 includes a quantitative supply device 14 that supplies the composite pellets of the present invention obtained by the above-described process and the master batch of the foaming agent in a fixed amount, respectively.
  • the composite pellets and the foaming agent supplied in this way were melted and kneaded together and extruded through a screw-type extruder 12, an extrusion die 20 for introducing the extruded dough extruded by the extruder 12, and the extrusion die 20.
  • a forming die 30 that forms the formed dough into a predetermined shape and cools and solidifies, and a take-up machine 50 that passes through the forming die 30 and takes out the extruded dough (woody foam formed body) that has been cooled and solidified are provided.
  • the above-described fixed-quantity supply apparatus 14 feeds the composite pellets of the present invention obtained as described above to the extruder 12 in a fixed quantity, and is conveyed toward the extruder 12 by the feeder 14a.
  • the composite pellet is provided with a foaming agent feeder 14b for merging the foaming agent, which is a master batch, in a fixed amount, and the composite pellet and the foaming agent are respectively placed in the hoppers provided in the feeders 14a and 14b.
  • the composite pellets and the foaming agent which are molding materials, are supplied to the extruder 12 at a predetermined blending ratio by the rotation of the conveying screw (not shown) by the motor M provided at the lower part of the hopper. It can be done.
  • the extruder 12 into which the composite pellets and the foaming agent are charged is melt-plasticized by heating and kneading the mixed material of the composite pellets and the foaming agent, which are molding materials, and this melt-plasticized molding dough
  • a screw type extruder 12 provided with the screw 15 which extrudes.
  • a biaxial screw type extruder 12 is applied as the extrusion molding apparatus 11 has been described.
  • Various screw type extruders may be used.
  • the twin screw extruder has a forced pushing force and a unique kneading effect due to the meshing structure of the screw 15, which is very advantageous for dispersing the raw material and reduces the rotational speed.
  • the material temperature is controlled by a heater (not shown) provided on the outer periphery of the cylinder 13 of the extruder 12.
  • a twin-screw type screw extruder is used as the extruder 12 of the extrusion molding apparatus 11.
  • a biaxial screw extruder 12 shown in FIG. 4 includes a cylinder 13, a pair of screws 15 rotatably provided in the cylinder 13, and a reduction gear, a motor, and the like that rotationally drive the screws 15.
  • the extrusion die 20 and the forming die 30 are provided on the tip side of the cylinder 13 (front in the extrusion direction, right side in FIG. 4).
  • the cylinder 13 has an outlet 13a that is opened at the front end in the extrusion direction, and is formed in a cylindrical shape with the rear end (rear in the extrusion direction, left side in FIG. 4) closed. 13 is provided with a raw material inlet 13b penetrating through the inside and outside, and the mixed pellet and foaming material are charged by the above-described quantitative supply device 14 through this inlet 13b.
  • a heating means such as a band heater is provided on the outer peripheral portion of the cylinder 13 so as to wind or wrap the cylinder 13 over the entire length of the cylinder 13. The mixed material supplied to the inside is heated.
  • Each of the screws 15 includes a round bar-shaped rotating shaft and a screw element that forms a screw thread portion of the screw 15 and is integrally provided in a spiral manner around the rotating shaft.
  • a rotating shaft (left side in FIG. 4) provided at the rear end of each screw 15 protrudes rearward from the rear end of the cylinder 13, and the protruding portion is connected to a motor M as a drive source.
  • 15 is configured as a biaxial conical screw having a tapered shape toward the distal end side, which rotates in the reverse direction in a state where the inclined screw thread and the screw groove formed in 15 are engaged with each other.
  • the mixed material supplied into the cylinder 13 via the fixed amount supply device 14 is heated and kneaded while being mixed along the groove between the screw portions of the screw 15. It is pushed out of the cylinder 13 from the distal end side of the screw 15 by the pushing force that is pumped in the distal direction and becomes a melt-plasticized molded fabric and applied to the molded fabric.
  • the molded dough extruded from the extruder 12 as described above is introduced into the extrusion die 20, shaped into a predetermined shape, and the shaped dough extruded through the extrusion die 20 is In the embodiment shown in the figure, the wood solid product is cooled and solidified as it passes through the molding die 30 and becomes a wood molded product, and this wood molded product is taken up at a predetermined take-up speed by the take-up machine 50. A wood composite board is manufactured.
  • the wood molded product (woody synthetic board) thus obtained is cut at predetermined intervals in the longitudinal direction and used as a flooring material for a wood deck.
  • Test example 1 (1) Purpose of the test The linear velocity ⁇ d can be obtained by changing the extrusion rate Q (kg / Hr), the nozzle hole diameter D (mm), and the number of nozzle holes n (pieces) of the extruder provided in the composite pellet manufacturing apparatus. (cm / sec) is changed, and changes appearing in the shape and characteristics of the obtained composite pellet are confirmed.
  • Test method (2-1) Composition of raw materials The composition of the raw materials used in Test 1 is shown in Table 1 below.
  • the material is introduced from the introduction part 33 in the cylinder of the extruder shown in FIG. 5, and the set temperature of the cylinder downstream of the material introduction position is 150 to 170 ° C. in the heating part 34 and 170 to 200 in the kneading part 35, respectively.
  • the temperature was set to 110 to 200 ° C. in the fixed amount feeding unit 36.
  • the melted resin strand extruded from the die nozzle provided at the cylinder tip of the extruder was sprayed with hot water (hot water shower), hot cut, and the resulting pellet was dewatered and collected by centrifugation.
  • the vent hole provided in the cylinder quantitative feeding section 36 was suctioned by communicating with a vacuum pump, and additionally opened to the atmosphere.
  • the bulk density of the pellet is the total mass (g) of the pellet filled in the graduated cylinder of 1 liter capacity in a non-pressurized state.
  • the bulk density was calculated as “total mass (g) / 1000 (cm 3 )”.
  • Test example 2 (1) Purpose of the test The linear velocity ⁇ d (cm / sec) is changed by changing the extrusion amount Q (kg / Hr) while keeping the diameter D and the number of holes n of the die nozzle to be used constant. The change in the shape and properties of the composite pellet when ⁇ d is near the lower limit in the numerical range of the present invention is confirmed.
  • Test method (2-1) Composition of raw material The composition of the raw material used in the experiment is shown in Table 3 below.
  • the molten dough melted and kneaded in the cylinder by the screw is further pressurized by this gear pump, and can be introduced into the die nozzle through the two-way valve, so that the extrusion amount is made constant.
  • the molten dough introduced into the die nozzle at the tip of the cylinder of this twin screw extruder was extruded as a strand through the nozzle hole, and the extruded strand of molten material was underwater cut.
  • the set temperature of the cylinder in the extruder was divided into four in the longitudinal direction as shown in FIG. Each set temperature in each section is as in Test Example 1.
  • the introduction of the raw material to the cylinder of the extruder is performed by introducing the raw material (resin, talc, pigment and paraffin wax) containing wood powder from the cylinder introduction part 33.
  • vent hole provided in the quantitative feeding unit 36 was connected to a vacuum pump and vacuumed to open to the atmosphere.
  • the diameter of each pellet was smaller than the diameter D of the nozzle hole provided in the die nozzle, and generation of voids (voids) could not be confirmed inside the obtained pellet.
  • the composite pellets (Comparative Examples 1 and 2) obtained at a linear velocity ( ⁇ d ⁇ 12) lower than the predetermined linear velocity ⁇ d of the present application are fused with each other, and about 2 to 15 pellets are formed. Many lumps formed by fusion were generated (see FIGS. 11 and 12).
  • the diameter of the obtained composite pellet is larger than the diameter D of the nozzle hole provided in the die nozzle.
  • Many of these composite pellets have voids inside, and the bulk density is low.
  • Example 5 From the results of Test Example 2, in Example 5 where the linear velocity ⁇ d is 12 cm / sec, the diameter of the pellet is slightly smaller than the nozzle hole diameter of 4.0 mm, which is 3.90 mm, and the linear velocity ⁇ d. Is less than 12 cm / sec, it is predicted that the relationship between the nozzle hole diameter and the pellet diameter will be reversed. Therefore, the linear velocity ⁇ d capable of suppressing the strand expansion due to the ballast effect is 12 cm / sec. Can be confirmed as the lower limit.
  • Extrusion foam molding was performed using the composite pellets obtained in Examples 2 and 4 and Comparative Examples 1 and 2 described above using an extrusion molding apparatus.
  • the outline of the structure of the used extrusion molding apparatus is the same as that of the extrusion molding apparatus described with reference to FIG. 4.
  • a rotary conical twin screw extruder “T-58” was adopted.
  • the composite pellets obtained in Examples 2 and 4 and Comparative Examples 1 and 2 were dried at 120 ° C. for 2 hours or more with a hot dryer, and the moisture content was dried to 0.2% or less. Then, it was put into an extruder together with the above-mentioned foaming agent.
  • the extrusion temperature (set temperature of the extruder 12 to the extrusion die 20) was 175 to 190 ° C., and the molding die 30 was a 20 ° C. water-cooled jacket.
  • the deaeration vent was opened to the atmosphere without performing vacuuming via the deaeration vent provided in the cylinder 13 of the extruder 12.
  • An extrusion die 20 shown in FIGS. 6A to 6C was attached to the tip of the cylinder 13 of the extruder 12 via an adapter 16 having a breaker plate 22.
  • the extrusion die 20 gradually has a cross-sectional shape in the width direction from an inlet 20a having a shape corresponding to the cylinder outlet of the extruder toward an outlet 20b (145 mm ⁇ 25 mm) having a shape corresponding to the cross-sectional size of the wood foam molded plate.
  • a flow path 21 to be changed is formed, and a resistance body 26 having a shape shown in FIG.
  • the above-described molding die 30 provided with the above-described water cooling jacket is provided in communication with the outlet 20b of the extrusion die 20, and the molten dough extruded from the extrusion die 20 is cooled in the molding die 30 to have a width of 145 mm and a thickness.
  • a wood foam molded body formed in a 25 mm plate shape was continuously molded in the length direction.
  • Test results Table 5 below shows the results of the production test of the wood foam molded board performed by the above method.
  • die pressure change width (MPa) is the minimum and maximum values measured by measuring the pressure change in the extrusion die at the position indicated by the symbol P in FIG. Is shown.
  • the amount of foaming agent added represents the mass ratio (mass%) of the foaming agent (master batch) to the total mass of 100 mass% of the composite pellet and the foaming agent (master batch).
  • the pellets manufactured under the prescribed conditions of this application have a uniform shape, size, physical properties, etc., and as a result, a stable flow of the extruded dough is obtained when used for extrusion molding. Thus, it is considered that the pressure in the extrusion die appears as stable.
  • the uniform dispersion of foaming gas is confirmed by the fact that voids (voids) that indicate partial concentration of foaming gas are not formed in the obtained molded product (plate material). can do.
  • the minimum value of the product density was that of Comparative Example 1. 0.88 g / cm 3 in the example using the pellets, 0.86 g / cm 3 in the example using the pellets of Comparative Example 2, and the maximum product density when using the pellets of Examples 2 and 4 It does not reach 0.85 g / cm 3 .
  • Extruder 12 (Screw) Extruder 13 Cylinder 13a Outlet (Cylinder 13) 13b Input port (for cylinder 13) 14 Constant supply device 14a Feeder (for composite pellets) 14b foaming agent feeder 15 screw (of extruder 12) 16 Adapter 20 Extrusion die 20a Inlet (extrusion die 20) 20b outlet (extrusion die 20) 21 Channel (of extrusion die 20) DESCRIPTION OF SYMBOLS 22 Breaker plate 26 Resistor 30 Molding die 33 Introduction part 34 Heating part 35 Kneading part 36 Constant feed part 40 Compound pellet production apparatus 41 Constant supply apparatus 42 Extruder 42a Cylinder 42b Screw 42c Screw element 43 Die nozzle 43a Nozzle hole 44 Cutter 44a Cutter blade 45 Centrifuge 47 Dryer 50 Take-up machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

La présente invention se rapporte à des granulés composites pour moulage par extrusion, aucune fusion entre les granulés ni aucune variation de forme, de taille et de densité ne se produisant. Une matière en fusion obtenue par le malaxage à l'état fondu d'une matière première contenant une résine thermoplastique et de la poudre de bois dans une extrudeuse (42), est extrudée sous la forme de brin par un trou (43a) d'injecteur situé dans un injecteur (43)de filière qui est fixée à l'extrémité de pointe de l'extrudeuse (42), et le brin de matière en fusion est découpé sur une longueur prédéfinie pour former les granulés. A ce moment, la quantité d'extrusion (Q) de l'extrudeuse (42), le diamètre (D) de chaque trou (43a) d'injecteur, et le nombre (n) des trous (43a) d'injecteur sont réglés de sorte qu'une vitesse linéaire (νd), qui représente une vitesse d'écoulement de la matière en fusion dans chaque trou (43a) d'injecteur situé dans l'injecteur (43) de filière, soit comprise dans la plage de 12 à 50 cm/s.
PCT/JP2010/070281 2010-04-28 2010-11-15 Procédé de production de granulé composite pour moulage par extrusion, et granulé composite pour moulage par extrusion produite par le procédé WO2011135745A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US13/641,536 US8871345B2 (en) 2010-04-28 2011-04-27 Method for producing composite pellet for extrusion molding, and composite pellet for extrusion molding produced by the method
RU2012150992/05A RU2012150992A (ru) 2010-04-28 2011-04-27 Способ получения композитных гранул для экструзии и композитные гранулы для экструзии, полученные указанным способ
AU2011246076A AU2011246076B2 (en) 2010-04-28 2011-04-27 Method for producing composite pellet for extrusion molding, and composite pellet for extrusion molding produced by the method
EP11775054.7A EP2565004B1 (fr) 2010-04-28 2011-04-27 Procédé de production de granulés composite pour extrusion, et granulés composite ainsi produits
CN2011800215652A CN102869484A (zh) 2010-04-28 2011-04-27 挤出成型用复合颗粒的制造方法和用所述方法制造的挤出成型用复合颗粒
CA2796753A CA2796753C (fr) 2010-04-28 2011-04-27 Procede de production de granule composite pour moulage par extrusion, et granule composite pour moulage par extrusion produit par le procede
MYPI2012004705A MY155443A (en) 2010-04-28 2011-04-27 Method for producing composite pellet for extrusion molding, and composite pellet for extrusion molding produced by the method
BR112012027401A BR112012027401A2 (pt) 2010-04-28 2011-04-27 ''método de fabricação de composto granular para extrusão e composto obtido''
KR1020127028398A KR20130020783A (ko) 2010-04-28 2011-04-27 압출 성형용 복합 펠렛의 제조 방법, 및 상기 방법으로 제조된 압출 성형용의 복합 펠렛
PCT/JP2011/060269 WO2011136273A1 (fr) 2010-04-28 2011-04-27 Procédé de production de granulé composite pour moulage par extrusion, et granulé composite pour moulage par extrusion produit par le procédé

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JP2010-104279 2010-04-28
JP2010104279A JP5457933B2 (ja) 2010-04-28 2010-04-28 押出成形用複合ペレットの製造方法，及び前記方法で製造された押出成形用の複合ペレット

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PCT/JP2010/065310 Continuation-In-Part WO2011161838A1 (fr) 2010-04-28 2010-09-07 Granule composite pour moulage par extrusion et méthode de prétraitement d'un granule composite pour moulage par extrusion

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EP2565004A1 (fr) * 2010-04-28 2013-03-06 WPC Corporation Procédé de production de granulé composite pour moulage par extrusion, et granulé composite pour moulage par extrusion produit par le procédé
CN109075671A (zh) * 2016-04-13 2018-12-21 黑田精工株式会社 磁铁埋入型铁芯的制造方法、磁铁埋入型铁芯的制造装置及制造工具
CN112670008A (zh) * 2020-11-18 2021-04-16 百色学院 一种流场诱导提高片状银粉/聚合物复合线材导电性的方法
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JP6621149B2 (ja) * 2018-02-02 2019-12-18 株式会社経営総合研究所 コンクリート型枠用せき板の押出成形方法及びコンクリート型枠用せき板の押出成形装置
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JP7343776B2 (ja) * 2019-12-04 2023-09-13 日本製鉄株式会社 廃プラスチック成形物の製造方法、および廃プラスチック成形物の製造装置

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EP2565004A4 (fr) * 2010-04-28 2013-10-16 Wpc Corp Procédé de production de granulé composite pour moulage par extrusion, et granulé composite pour moulage par extrusion produit par le procédé
US8871345B2 (en) 2010-04-28 2014-10-28 Wpc Corporation Method for producing composite pellet for extrusion molding, and composite pellet for extrusion molding produced by the method
CN109075671A (zh) * 2016-04-13 2018-12-21 黑田精工株式会社 磁铁埋入型铁芯的制造方法、磁铁埋入型铁芯的制造装置及制造工具
EP3708936B1 (fr) * 2019-03-15 2024-04-17 Polymetrix AG Procédé de recyclage de polyoléfines
CN112670008A (zh) * 2020-11-18 2021-04-16 百色学院 一种流场诱导提高片状银粉/聚合物复合线材导电性的方法

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