WO2005037518A1 - プラスチック発泡複合体の製造方法 - Google Patents
プラスチック発泡複合体の製造方法 Download PDFInfo
- Publication number
- WO2005037518A1 WO2005037518A1 PCT/JP2004/015228 JP2004015228W WO2005037518A1 WO 2005037518 A1 WO2005037518 A1 WO 2005037518A1 JP 2004015228 W JP2004015228 W JP 2004015228W WO 2005037518 A1 WO2005037518 A1 WO 2005037518A1
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- WIPO (PCT)
- Prior art keywords
- foam
- plastic
- skin
- foamed
- composite
- Prior art date
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Classifications
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- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
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- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1376—Foam or porous material containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
- Y10T428/2924—Composite
Definitions
- Plastic foam is composed of extremely small bubbles and a thin bubble film surrounding them, and has a high volume fraction and low convection. Therefore, it has good thermal insulation, cushioning and buoyancy, and is inexpensive. Therefore, it is used in a large amount in a wide field. While foam has such features, its strength is low, so it is difficult to use by itself. The foam film is thin, so it absorbs moisture and heat insulation decreases, creeps with a small pressure, and the foam film is stretched. There are drawbacks such as shrinkage over time and poor weather resistance.
- the present invention develops a method for producing a material in which a skin having a uniform thickness of plastic is formed on the entire surface of a plastic foam and bonded and integrated with the foam to improve the defects of the plastic foam.
- the present invention relates to a method for producing a foam composite.
- the present invention relates to a method for producing a foam composite suitably used for a heat insulating material, a building material, a tacky material, an impact absorbing material, a levitation material, an anticorrosion method, and the like.
- One technique for providing a plastic skin on the surface of a plastic foam is a method of creating a skin by rotational molding and injecting and foaming polyurethane into the skin.
- the skin and the core do not adhere, and the bending strength and impact strength are not sufficient.
- the molding temperature of the product is low, the molded body is distorted, deforms over time, and consists of two different materials, making it difficult to recycle.
- the production is a two-step process, it is difficult to foam the skin and to provide a reinforcing body on the core due to high costs.
- the other is a method in which a skin is made by blow molding, and foam particles are placed in the skin and heated.
- the present invention is a foamed composite in which the core is integrated at a low density, and the skin and the core are firmly bonded to each other.
- the foam composite has excellent heat insulating properties and does not absorb moisture and deteriorate heat insulating properties. It has been developed as a method for manufacturing insulation materials that have a long life and low energy loss over the entire period of use, and contribute to the prevention of global warming.
- the foam composite with reinforcement in the core made by the manufacturing method of the present invention is a rigid body with a specific gravity of 1Z4 of wood and light weight and comparable to that of wood.
- cushion materials, impact absorbing materials, and levitation materials that are not broken by impact can be made.
- the present invention uses recycled plastic or rubber plastic waste as a raw material, makes a substitute for wood, and contributes to the preservation of the global environment.
- a polyolefin granule containing a plastic powder or fine particles and a larger crosslinking agent and a foaming agent is placed in a mold and heated from the outside while rotating to melt the plastic powder.
- cross-link the polyolefin make the elastic modulus 1.6 to 3.0 X 10 4 Pa, adhere the granular material on it, decompose the foaming agent and disperse the uniform fine gas.
- a granular body double-layer foamed pellet having a plastic coating on part or all of the polyolefin to be cross-linked and foamed is formed, and this is put into a mold together with powdered plastic and rotationally molded to be uniform.
- This is a method of making a foamed composite with a low density foam and reinforcement in the thickness skin and core.
- Using an all-coated granulate can produce a foam composite with a uniform thickness of skin and a reinforcement of approximately uniform thickness around a number of granular foams.
- a foam composite in which a foam and a band-like, string-like, or massive reinforcement are mixed in the skin.
- a molded body having a reinforcing body obtained by the manufacturing method of the present invention has a thickness of the reinforcing body of 0.05 to 0.5 mm, which is compared with the thickness of the foam film of about 0.5 mm. Since it is remarkably thick, this reinforcing effect improves the compressive strength, bending strength, impact strength and shock absorption. Unlike the tree rings, this reinforcement has a non-directional structure. So far, plastic and lightweight molded bodies and strong molded bodies have been made, but lightweight and strong molded bodies have been unable to do so. For the first time, this technology made it possible to produce lightweight and strong molded bodies.
- the above-mentioned two-layered granular material has good processability, and when this material is used, the foamed composite cannot be voided. The reason is that the material of the reinforcing body is easier to move in the mold than the bubbles.
- FIG. 1 is a drawing-substituting photograph showing an example of a molded article comprising a skin and a foam core.
- 1 is the epidermis and 2 is the core of the high-magnification foam.
- FIG. 2 is a drawing-substituting photograph showing an example of a molded body comprising a foam core having a skin and a reinforcing body.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement.
- FIG. 3 is a drawing-substituting photograph showing an example of a molded body comprising a skin, a foam, and a string-like reinforcing body.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement.
- FIG. 4 is a photograph substituted for a drawing showing an example of a two-layer pellet in which a foaming material is coated with plastic.
- 8 indicates a double-layered foam pellet.
- FIG. 5 is a drawing-substituting photograph showing an example of a hollow molded body made of a foam having a skin and a reinforcing body.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement
- 4 is the hollow part.
- FIG. 6 is a drawing-substituting photograph showing an example of a molded body in which a metal part is placed in a foam having a skin and a reinforcing body.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement
- 6 is the metal fitting.
- FIG. 7 is a drawing-substituting photograph showing an example of a molded product in which waste is put in a foam composite of an outer skin and a core.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 5 is the rubber 'plastic waste
- the material (old golf ball) is shown.
- FIG. 8 is a drawing-substituting photograph showing an example of a molded product that can be bonded with unevenness on the foam composite of the skin and the reinforcing body.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement
- 7 is the protruding portion.
- FIG. 9 is a drawing-substituting photograph showing an example of a heat insulating box made of a skin and foam.
- 1 is the epidermis and 2 is the core of the high-magnification foam.
- FIG. 10 is a drawing-substituting photograph showing an example of a heat-insulating box made of a foam having a skin and a reinforcing body.
- FIG. 11 is a drawing-substituting photograph showing an example of a foam composite having reinforcement at right angles to the skin.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement.
- FIG. 12 is a drawing-substituting photograph showing an example of a molded product obtained by expanding the foam 40 to 70 times with a foam composite having a skin and a reinforcing body.
- FIG. 13 is a drawing-substituting photograph showing an example of a molded article comprising a foamed skin and a reinforced foam.
- 1 is the skin
- 2 is the core of the high-magnification foam
- 3 is the reinforcement.
- FIG. 14 is a drawing-substituting photograph showing an example of a flame-retardant foam composite.
- FIG. 15 is a graph showing the heat insulation properties of the foamed composite container.
- an approximately cubic granular material having a cross section of 4 mm can be used. This is 40 times the powder plastic particle size of about 0.1 mm, and its volume and weight are 64000 times the cube. For this reason, when these two types of materials are put into a mold and rotationally molded, the powdered plastic first melts to form a skin, and then a granular material is deposited on it to decompose the powdered plastic and the granular material to about 140 ° C. In this case, the polyolefin is cross-linked to increase the storage elastic modulus, and at about 190 ° C, the foaming agent decomposes.
- the difference between the temperature at which the crosslinking agent and the foaming agent start to decompose is 30 ° C, and the force seems to foam after the crosslinking is completed.
- the amount of crosslinking agent used is very small, because it is dispersed in the polymer.
- the decomposition of the blowing agent begins before the crosslinking is complete. And two reactions proceed simultaneously.
- the resulting foam becomes a core with better fluidity than a low storage elastic modulus and a low gel fraction.
- the storage elastic modulus is 1.6 to 3.0 X 10 4 Pa, rubber elasticity is developed, and the gas is introduced into the interior. Confinement Creates a core with uniform fine bubbles and no low density particles.
- the storage elastic modulus is determined by kneading polyolefin and a crosslinking agent at a predetermined ratio, forming into a sheet (10 mm ⁇ 40 mm ⁇ 4 mm) with a press, crosslinking, and using this as a sample.
- a foamed composite is molded using a polyolefin granule that gives a storage elastic modulus of 1.6 to 3. OX 10 4 Pa at 190 ° C. and 00 Hz.
- a cross-linked foamed polyolefin is used as a rod, and this is coated with plastic to form a granule having a substantially uniform thickness of plastic coating on the entire surface of the foamed material.
- this granular material is put together with powdered plastic in a mold and rotationally molded, as shown in Fig. 2, the granular material expands 20 to 70 times with a diameter of 5 to 25 mm with reinforcement of thickness of 0.05 to 0.5 mm.
- a foam having a density of 0.1 to 0. OlgZcm 3 is assembled into an integrated core.
- This molded body can have a skin thickness of 1 to 10 mm, preferably 2 to 7 mm, and the granular material with the reinforcement is almost even in any part of the core, and all the parts are connected to fill the inside of the core. Since the reinforcing body is a spherical surface, it is curved and elastic, and there is a portion of the reinforcing film that is tense and perpendicular to any direction. Is a broken body. The skin and core particles adhere to each other, so that the compressive strength, bending strength, and impact strength are extremely high.
- the present invention makes a molded body by rotational molding, covers it at the normal processing temperature of plastic, uses a foam with good fluidity for the core, and slowly heats and cools under pressure, so there is no distortion. , Will not deform over time A molded body.
- This foam composite has all the characteristics of a foam and is an ideal molded body that can be manufactured stably and inexpensively and has no defects. Therefore, it is used in a wide range and in large quantities for all plastic products.
- crosslinked foamed polyolefin particles used in the present invention are extruded as cross-linked foamed polyolefin as a rod having a diameter of 2 to 10 mm, and the surface thereof is coated with a plastic having a thickness of 0.5 to 5 mm. Then, in a molten state, the tip is compressed with a sharp cutting tool to join the plastics at both ends, and cut at a thickness of 0.3 mm or more, preferably 0.3 to 3. Omm. .
- a skin is formed on a part of a foamed granular material and is rotationally molded together with powdered plastic, a uniform thickness skin, a low-density foam core, and a band-like, string-like, or massive reinforcement are mixed.
- the existing foamed composite is made.
- This molded body is a shock-absorbing shaped body that buckles when strongly compressed.
- Low density polyethylene, high density polyethylene, polypropylene, EVA, nylon or the like can be used alone or as a mixture for the material used to coat part or all of the foaming compound.
- High density polyethylene has excellent mechanical properties, so it has a large reinforcing effect.
- the material used to coat part or all of the foaming compound contains 1 to 10 PHR of foaming agent!
- a plastic powder or fine particles having a particle diameter of 0.1-2 mm is used as a material for forming the skin.
- the plastic it is possible to use a thermoplastic resin having a melting point or soft point of 170 ° C or lower or a semi-cured thermosetting resin.
- thermoplastic resin polyolefin, ethylene acetate butyl copolymer, polyamide resin, polyester resin, etc. can be used.
- Polyolefin with low moisture absorption is preferred, but depending on the properties required for the skin. Selected. High density polyethylene, polypropylene, nylon, etc. may be used.
- Semi-cured heat-curing resin uses epoxy resin, phenol resin, polyester resin, etc., mixed with a curing agent, melted and semi-cured, and then used in powder or fine-grained resin Is possible.
- the amount of powder plastic used for the skin is adjusted so that the thickness of the skin is between lmm and 10mm. Skin thinner than lmm absorbs moisture. Epidermis thicker than 10mm Heat escapes through it and is easily broken by impact. It is also possible to make the skin thickness 2 mm or more and not absorb moisture.
- the skin having a uniform thickness is preferably a skin having a minimum thickness of 1Z2 or more of the average thickness of the skin.
- the average thickness of the skin can be obtained by measuring the thickness of any 10 points on the skin of the molded product.
- the present technology can also foam the skin, it is possible to produce a molded body having excellent heat insulating properties that are lightweight and resistant to impact.
- the foam of the polyhedral foam has a thin portion in the film of the foam, which causes moisture absorption, but the skin of the tack material has an elastic polyhedral structure.
- the skin and the core are intertwined with each other, and the joint is not flat, so it adheres well.
- the skin can be foamed simply by mixing a foaming agent with powdered plastic, and the magnification can be freely adjusted. It is also possible to form a foamed skin inside a thin non-foamed skin by using small particles of about 1 mm in diameter with a foaming agent mixed with powdered plastic. Cross-linking of the skin can be achieved, for example, by simply mixing a cross-linking agent with powdered plastic, resulting in a thin skin with a uniform thickness.
- the inventors have studied a method for producing a composite having a uniform thickness skin and a high-magnification core, and the skin has a storage elastic modulus of 190 ° C and an angular velocity of lrad / s. It has been found that it is preferable to use a powder plastic having a viscoelasticity of 1 ⁇ 10 3 Pa or more because a skin having a uniform thickness can be obtained.
- the resin powder or fine granules should contain 0.2-2.
- OPHR organic peroxide It is possible to use a material in which the powder is added and mixed at a temperature equal to or higher than the melting point of the organic peroxide, and the surface of the resin powder or fine particles is coated with the organic peroxide. In this way, the powder or fine particles are heated, and adhere to and dissolve on the inner surface of the mold. At the same time, the crosslinking reaction proceeds and the skin changes to non-melting, so the storage elastic modulus is less than 1 X 10 3 Pa. It is possible to use other materials.
- This method is particularly effective in polyolefins such as polyethylene and EVA copolymers, and the inner surface of the epidermis is smoothed, so that the epidermis can be made thinner.
- the above-mentioned peroxide-added resin powder is used by mixing with other thermoplastic resin powders.
- the skin material can be prevented from flowing out of the mold, and a characteristic skin can be obtained.
- a flame retardant resin, an inorganic filler, a flame retardant, fiber, and the like can be blended in the skin material to improve the strength of the skin and flame retardant.
- carbon black or stainless fiber can be mixed to prevent the generation of static electricity, and the weather resistance can be improved by adding an ultraviolet absorber or an antioxidant.
- Antifungal agents, antibacterial agents, pigments and the like can also be mixed.
- the skin can be embossed or covered with aluminum sheets or inorganic granules to make it flame retardant, for example, roofing. Foamed composites with aluminum foil applied to block moisture can be a good heat insulating material, and a foamed plastic sheet can be bonded to improve heat insulation.
- Preferred as the core polyolefin material is LDPE having a melting property of MFR of 1.5 to 20 gZlOmin.
- the crosslinking agent used in the present invention is an organic peroxide such as dicumyl peroxide, 2,5-dimethyl-2,5-bis-t-butylperoxyhexane, or di-t-butyl peroxide.
- the amount of the cross-linking agent mixed with the polyolefin is 0.2 PHR or more and 0.6 PHR or less, and preferably 0.25 PHR or more and 0.5 PHR or less. If the amount of the cross-linking agent is too small, the gas escapes, the bubbles become coarse, and the core does not fill the epidermis. Also, if the mixing amount is too large, expansion is suppressed and voids are generated at the corners of the mold, creating irregularities on the skin.
- crosslinking agent Used as a part of the crosslinking agent to be mixed by using a crosslinking aid such as 1,2-polybutadienetriallyl cyanurate or trimethylolpropane trimetatalylate having two or more reactive double bonds in the molecule. It is possible to reduce the amount of the crosslinking agent to be uniformly crosslinked.
- a crosslinking aid such as 1,2-polybutadienetriallyl cyanurate or trimethylolpropane trimetatalylate having two or more reactive double bonds in the molecule. It is possible to reduce the amount of the crosslinking agent to be uniformly crosslinked.
- the granular material preferred in the present invention is a polyolefin that can be three-dimensionalized, such as polyethylene, polypropylene, ethylene acetate butyl copolymer mixed with a crosslinking agent and a foaming agent.
- Granules with a particle size of about 2 mm adhere to the entire surface of the mold during rotational molding, and expand in the thickness direction during foaming, making it easy to form a void-free core. Large granules with a particle size of 5 mm or more help to form a uniform skin with less escape gas.
- the shape of the granule is a sphere, an ellipsoid close to a sphere, a rod, a cube, etc., whose length is almost equal to the diameter. A shape that is easy to move by rolling is preferred.
- the foaming agent used in the present invention is a decomposition exothermic foaming agent, and is azodicarbonamide, di-trosopentamethylenetetramine or a mixture thereof.
- foaming agent When polyolefin is cross-linked and three-dimensionalized, rubber elasticity develops in the molten state, and when the foaming agent decomposes, it suppresses the formation of bubbles, prevents gas dispersion, and reduces the density of uniform fine bubbles. Become a foam.
- the resulting gel becomes heat resistant and the skin and core are made simultaneously, making it possible to produce a foamed composite with the skin and core bonded.
- the amount of the foaming agent mixed with the polyolefin is preferably 1 PHR or more and 40 PHR or less, more preferably 5 PHR or more and 30 PHR or less. If the amount of the foaming agent is small, a sufficiently foamed core cannot be obtained. If the amount is too large, voids in the molded body increase.
- a foaming aid such as zinc stearate, zinc white and urea can be used together with the foaming agent.
- a foaming agent having a decomposition temperature of 200 ° C and a foaming aid are mixed with polyolefin mixed with a crosslinking agent, and the decomposition temperature of the blowing agent is lowered to 170 to 190 ° C. To start the decomposition of the blowing agent.
- Bubbles can be refined by using a nucleating agent in combination with the foaming agent.
- a kneading apparatus such as a kinder or a Banbury mixer is usually used and kneaded at a temperature at which the crosslinking agent does not decompose. After kneading, it is made into a plate shape with a roll, and the granule is made by cutting it into a rod shape with an extruder and cutting it into a rod shape.
- a good dispersion state of the foaming agent can be obtained, and the cracked gas can be effectively used.
- the present invention when all the polyolefin granules used as the material for the foam core are coated with a non-foaming or slightly foaming material and rotationally molded together with powdered plastic, as shown in FIG.
- the bodies exist independently, and are bonded to each other and bonded to the skin of the molded body to form an integral reinforcement.
- This molded body has no directionality, toughness, excellent mechanical strength, and quickly propagates the impact received by the molded body.
- the two-layer foam pellets are formed by extruding a material that cross-links and foams into a rod shape, using a crosshead die to cover a sheath that becomes a reinforcement, and in a molten state, with a compression tool with a sharp tip at a substantially uniform thickness. Compress and cut.
- the double-layered pellets made in this way are as shown in Fig. 4. If the wound layer is completely covered with grease and the minimum thickness of the joint is 0.3 mm or more, the reinforcement will not be cut even if foamed, resulting in a heat-resistant, lightweight and strong molded body. Effective use of gas can be achieved.
- This foamed pellet with a coating on the front surface can also be injection molded.
- the production equipment for the two-layer foam pellets used in the production method of the present invention uses a crosshead extruder, and one extruder has a diameter of 2 to 10 mm of polyolefin in which a crosslinking agent and a foam composite are blended.
- the rod is extrudable, the other can be coated to a thickness of 0.5 to 5 mm of plastic, the two layers of rods are cut in the molten state and the coating is joined to a thickness of 0.3 to 5 mm
- two-layer foamed pellets used in the production process of the present invention 0.5 to 5mm of the cross-linking agent and foaming agent magnitude by blending of the 8 to uniform thickness on the granules of 1000 mm 3 polyolefin
- a plastic coating with a thickness of at least 0.3 mm, and the thickness is 0.3 mm or more.There is a coating on the entire surface, and the compression direction force is rectangular. It is preferably a flat two-layer foam pellet.
- the diameter of the granular material covered with the reinforcing body is 5 to 25 mm, the thickness is 0.05 to 0.5 mm, and the ratio of the foam material to the reinforcing material is 1: 1 to 1:10. If the thickness of the reinforcement is halfway between the skin (3 mm) and the thickness of the bubble film (0.01 mm), the mechanical strength and elasticity of the resulting molded body will be good.
- the structure in which a lightweight and strong foamed composite is provided with a reinforcement is an ideal structure for a lightweight and strong material. It can be made vertically long in the direction, or a reinforcing body can be made at right angles to the skin, and a molded body having various properties can be obtained.
- a large amount of foaming agent is used for the polyolefin in the inner layer, and this foaming prevents gas from escaping and also suppresses shrinkage during cooling, thus speeding up expansion during molding.
- foam with a reinforcing body can increase the foaming ratio to 70 times.
- a cross-linking agent and a foaming agent can be added to the granular coating to cause foaming, and the reinforcing body can be thickened to increase strength and light weight to improve heat insulation.
- the metal mold is made of a plate or a metal material such as heat conductive iron, stainless steel, aluminum, etc., and is composed of a two-part side wall and upper and lower lids. It is normal to do. Ordinary rotational molds are made of sheet metal, and their wall thickness is generally 2 to 3 mm. However, since the gas pressure due to foaming is strong in the mold of the present invention, a thin mold cannot be used, and it is necessary to use a mold that can withstand an internal pressure of 3. OkgfZcm 2 . This is, for example, a 5mm thick steel plate or a metal mold that has a strength equal to or higher than that of the material and has good thermal conductivity.
- ribs are attached to prevent the mold from being deformed and its temperature is made uniform.
- the mold When forming a heat insulation box with double walls, the mold should be put on the top of the inner box so that it can be connected to the outer box, and the bottom of the outer box should be separated from the side plate. Makes it easy to remove the molded product as soon as the material is added. If the temperature of the inner box rises and the skin becomes thin, increase the heating of the inner box.
- a small hole having a diameter of 3 to 10 mm is provided in the mold, and a heat-insulating Teflon tube is attached so that the air in the mold can escape to the outside during foaming.
- One end of this tube is located outside the mold and the other end is positioned near the center of the mold.
- one small hole is sufficient for the mold, but two or more holes are provided for large or complex molds.
- the rotation of the mold is performed by biaxial rotation, rocking rotation, or the like.
- the rotational speed of the mold is usually 1 to 20 rpm so that centrifugal force is not applied to the material in the mold.
- forward rotation and reverse rotation are repeated alternately.
- the amount of material in the mold should be 85% or less of the internal volume so that the material can move during rotation.
- the mold is heated by hot air, direct fire, oil calorie heat in the mold welded with the pipe, etc., and the surface temperature of the mold is set to a temperature at which the foaming agent to be used decomposes. Heat up. Foaming occurs when the mold reaches a temperature at which the blowing agent decomposes. Foaming with foaming aid If the temperature at which the agent is decomposed is adjusted to 170 to 190 ° C. and the time from the start to the end of the decomposition is increased, a molded article free from voids can be obtained. The time required for heating is 15 to 30 minutes.
- the mold after heating is immersed in water or cooled by a shower, and the molded body is taken out.
- the epidermis rapidly cools and solidifies, but the melted foam core in the center gradually solidifies while maintaining the high temperature and the pressure of the cracked gas is strong. A small, non-deformed compact is obtained.
- the time required for cooling is 15 to 30 minutes.
- the pressure in the mold is molded at 1.5 to 3. OkgZcm 2 .
- the pressure varies depending on the size of the molded body, and the pressure increases when a large mold is used.
- the force of the sliding part escapes to the outside, but when the foaming agent is decomposed, the skin is formed and becomes airtight, and the polyolefin granules fills every corner of the mold, creating no voids! can get.
- a composite having a highly foamed core such as 30 times foam and a thick skin of 2 mm or more, preferably 3 mm or more can be produced, but such a foam composite has high heat insulation properties. Since it has the advantage that it does not absorb moisture, it can be used in humid places and underwater, and using it in water seems to save energy compared to ordinary insulation.
- the skin can be foamed twice to three times as much as spherical bubbles to improve heat insulation without increasing moisture absorption.
- the core is made of a foam with uniform fine bubbles and a specific gravity of 0.1 or less, and the maximum void size generated in the molded product is 100 mm 2 or less in cross-sectional area, it is a foam composite with good thermal insulation.
- a foam composite with good thermal insulation.
- a molded body without distortion is formed and the skin is mixed with carbon black, an ultraviolet absorber, or an antioxidant, it is possible to extend the service life outdoors. Therefore, the energy saving effect in long-term use is extremely large.
- Insulation tanks for heat storage air conditioners that use surplus power at midnight are always in contact with water and humidity It is an application example in which the product of this technology exhibits the maximum effect because it is exposed to a high environment. It is also effective to improve the heat insulating property or prevent moisture from entering by sticking a plastic foam sheet or aluminum foil to the surface of the foam composite.
- the core of the foamed composite of the present invention is a cross-linked foam of polyolefin, the compressive strength is not so high, but there is strength because a reinforcing body can be put into the core. Therefore, a desk or bed with an apparent specific gravity lower than that of a tree is suitable for the elderly and the disabled.
- the thickness of the foam core is not particularly limited, but is usually 10 to 100 mm. When the thickness is less than 10 mm, it is difficult to produce a skin by rotational molding and to disperse the granular material smoothly. On the other hand, if a molded body with a thickness greater than 100 mm is required, a hollow part that is almost similar to the molded body is provided at the center of the core as described later.
- the thickness of the foamed composite is not particularly limited, but if it is 25 mm or more, preferably 40 mm or more, the advantages of the sandwich structure are particularly exhibited, and the structural material is excellent in bending strength and lightweight.
- the foam composite of the present invention foams the force skin used in the cushion material, and cushioning properties are improved by forming a two-layer foam. Inserting a reinforcement will strengthen the cushion material.
- the foaming ratio of the foam core is 10 times or more and the foaming ratio of the skin is 5 times, it is suitable for cushioning materials, impact absorbing materials, and levitation materials.
- a foam composite with the structure shown in Fig. 1 having a 7-fold foam skin on a 30-fold foam core layer, a foam composite with a reinforcing body, and a non-foamed composite on top of it.
- a foam composite with a thin skin can be made, and this bed can be laid simply by laying a sheet on top of it, making it easy to wash and disinfect, making it an infection-proof hospital bed.
- a composite having a hollow having a shape substantially similar to the formed body in the center is also possible to make a composite having a hollow having a shape substantially similar to the formed body in the center, as shown in Fig. 5.
- a molded body having such a structure is excellent in elasticity, lightweight and inexpensive, and is suitable for a cushioning material and a levitation material.
- the compression strength of a hollow molded body with a foamed layer with a thickness of 10 to 100 mm and a non-foamed or slightly foamed reinforcing body is not much different from that of a molded body filled with material up to the core.
- a plastic film bag containing plastic powder can be used for rotational molding to create an inner skin.
- a vehicle seat comprising a large rectangular parallelepiped having a soft skin or a large rectangular parallelepiped having a hollow can also be produced.
- the reinforced foam composite obtained in the present invention is light and strong, and has an excellent impact resistance and impact absorption, and has a high compressive strength and bending strength. Therefore, it is an ideal material as a structural material. It is particularly suitable for cushioning materials, flooring materials, wall materials, roofing materials, levitation materials, and shock absorbing materials. In addition, even if it hits a person, it is not injured and used as an interior material for the car to eliminate human life accidents. This foam composite can be firmly fixed by inserting metal fittings. Therefore, the present technology is widely used in all applications that require light weight and strength.
- the feature that is deformed but not broken is suitable for gasoline tanks in automobiles, which can prevent gasoline from leaking and contribute to the prevention of fire.
- Aircraft and Shinkansen interior materials reduce the number of human accidents in the event of a collision, and if used on stairs, they will not cause injury.
- a plastic waste material for example, the foam composite waste material of the present invention can be crushed and granulated at the center of the foam core to form a molded body.
- This technology can also be used with waste materials such as rubber and FRP that are difficult to use by other methods. These waste materials are crushed to a size equivalent to or larger than that of cross-linked foamed polyolefin granules, and 30% to 70% of the total amount of waste is added to increase the compressive strength. Used for column material. If the material used in this technology is small, even if mud or sand is mixed, it will not affect the molding.
- the present invention This foam composite can also be used as a raw material for other materials that can be recycled.
- the foamed composite with a reinforcing body of the present invention is made from a recycled plastic material and used as an alternative material for wood, it contributes to effective use of resources and environmental purification. This is the only technology that can make a light wood replacement.
- a flame retardant molded article can be obtained by using a flame retardant plastic or blending a flame retardant with the material of the skin, the foam core and the reinforcing body.
- a plastic film, a metal foil, or the like is attached to the inner surface of the mold, and these can be adhered to the surface of the molded body.
- One molded body of the present invention is provided with a convex portion as shown in FIG. 8 and the other molded body is provided with a concave portion, which can be connected, and can be used as a transport box or the like.
- the two molded bodies can be provided with recesses, and the molded bodies can be connected to each other by connecting parts such as wood having a volume corresponding to the two recesses.
- the concave part does not get in the way like the convex part.
- the wood absorbs moisture and expands so that it can be firmly bonded.
- the molded body of the present invention can be molded with high dimensional accuracy, and has an elastic and strong smooth skin, so that it can be firmly bonded and has good airtightness at the connecting portion that is difficult to come off.
- the skin can be made into a low-magnification foam to further improve airtightness and prevent water from leaking.
- the convex part can be easily fitted by tapering the concave part and can be connected without any gap. It is also possible to attach a metal member that protects the corners and ridges of the connected molded bodies, or to provide a frame or the like so that the entire connected molded body is not detached.
- a long semi-cylindrical body having a concavo-convex portion at both ends and connectable is formed, the weight of the sea is attached to the center inside the curved portion of the semi-cylindrical body If the inner surface of the curved part of this semi-cylindrical body is connected to the offshore, it becomes an oil fence and it is easy to collect the accumulated heavy oil.
- the foam composite plates of the present invention are arranged in a box shape, and a frame made of a metal angle or the like is placed on the outside, and pressure is applied to the contact portion of the plate with bolts attached to the frame so that water does not leak.
- the board skin is made of low-magnification foam, rods or noises are inserted, caulking material is used to eliminate water leakage, and the insulation chamber is used as a hot water tank or insulation pool.
- an iron box is put into a box made with this technology to increase the compressive strength, and it can be buried in the soil to become a cable joint box, which is also suitable for a floating pier.
- a large drum can made of a foamed composite with a reinforcing body of the present invention is strongly deformed against an impact but is broken. Therefore, a metal drum containing a vitrified body of high-level radioactive waste is used as this drum can. Put a thick layer of polybutene or the like between the two drums that flows at high temperatures but not at room temperature. become.
- the safest storage method is to bury it in the ground.
- the foamed composite body with a reinforcing body of the present invention With the foamed composite body with a reinforcing body of the present invention, if a molded body in which metal parts such as bolts and nuts are embedded in the center is made, it can be easily fixed to other objects. Chairs with seats, armrests, and backrests can be molded using an integrated molding method and attached to aircraft, Shinkansen vehicles, etc., reducing the risk of personal injury in the event of a collision. In addition, if a table board is molded and legs are attached with metal fittings embedded in the board, light furniture for the elderly, the disabled, and infants can be created.
- Iron pipes that have undergone anticorrosion treatment are usually used for structures that are partially submerged in the sea. As for this iron pipe, the part that gets dry or gets wet due to the tides is pleasing and immediately, This part is often damaged by ships. If a foamed composite with a reinforcing body of the present invention is used to form a semi-cylindrical body that covers an iron pipe and seawater does not enter, this cover will not break even if the ship hits against it, and the iron pipe is long and maintains corrosion resistance. Can be used for years.
- a composite composed of an epidermis and a foamed core can be produced at a low cost in one step, the core is made into a high-magnification foam of 30 times, and the epidermis has a spherical shape capable of suppressing moisture absorption.
- a molded body with a reinforcing body in the core can be produced.
- the apparent specific gravity of wood 1Z4 can achieve the same strength and rigidity as wood, wall materials, floor materials, ceiling materials, roof materials, pallets, construction Can be applied to formwork, suspension bridge and floating pier.
- the skin is made of an elastic body made of foam, and it is lightweight, strong, and will be deformed by impact but will not break. It will become a cushioning material, shock absorber, and levitation material.
- this technology uses a recycled plastic material and can make a substitute for wood, which can be used in a pre-fabricated technology to save construction costs.
- the molded body of 0.3 to 0.7 PHR had a uniform thickness with a thickness of 2 mm, with the core and the core adhering to each other with a uniform fine bubble and no particle boundary.
- the foam had a gel fraction of 38 to 70% and a storage modulus of 2.1 to 2.6 X 10 4 Pa.
- MFR1 5gZl0min LDPE per force doc (bis- (4t-butylcyclohexyl) peroxydicarbonate) 0.5PHR and ADCA (azodicarbonamide) 20PHR into a 4mm diameter rod.
- MFR3gZl0min HDPE was covered to a thickness of 2 mm, and compressed and cut to a length of 8 mm in the molten state to produce double-layer pellets with plastic on the entire surface of the granulate. The minimum thickness of the joint was 0.6 mm.
- FIG. 12 is a cross-sectional photograph of this foam composite.
- a uniform-thickness skin and a uniform-sized granular foam are covered with a reinforcing body and integrated.
- Figure 2 shows a cross section of a 40x expanded foam composite. The diameter of the foam is approximately uniform, approximately 15mm, and the thickness of the reinforcement is approximately 0.15mm. Thus, it was a foam composite with a substantially ideal reinforcement.
- MFRlgZlOmin HDPE powder and the 4 mm foaming rod of Example 2 were coated with 2 mm thick MPE 1.5 g ZlOmin LDPE, and cut into 8 mm length to produce a double layer pellet.
- An X 50 mm mold was heated and foamed at 230 ° C. for 30 minutes with a main spindle of 10 rpm and a ij axis of 5 rpm, and then water-cooled for 30 minutes.
- the obtained foam had a uniform thickness as shown in FIG. 3, and a low-density foam was mixed with band-like, string-like, and massive reinforcements.
- the photograph of the foam composite in Fig. 3 is the left half of the foam removed to confirm the shape of the reinforcement, and the reinforcement was a strip, string, and lump aggregate.
- the obtained foam composite was a foam composite of FIG. 11 having a uniform thickness of skin and a core in which two-layer pellets were expanded and arranged in a single layer, and the reinforcing body was perpendicular to the upper and lower surfaces.
- the reinforcing body in the thickness direction can be perpendicular to the skin, and a foamed composite with high compressive strength can be obtained.
- the mold dimensions were 200 x 200 x 50 mm, the HDPE skin thickness was 1, 2 or 3 mm, and a foam composite consisting of 20 times the LDPE foam core was made.
- samples of the same size were made of a commercially available polystyrene foam foamed 50 times and a commercially available crosslinked polyethylene foam expanded 30 times. These were placed in water at room temperature, and the amount of water absorption was measured.
- the foamed composite having a skin thickness of 1 mm absorbed little water, and the molded bodies having a slightly absorbed force of 2 mm and 3 mm did not absorb water at all.
- both the polystyrene foam and the cross-linked polyethylene foam having no skin absorbed water significantly.
- foamed composites with a polyethylene skin thickness of 2 mm or more do not absorb water and can be used in water.
- Foam composite A was prepared, with one recess, a central position on the surface of 270 x 30 mm, and a total of three protrusions that can be attached to and detached from the center position on both sides of 300 x 30 mm.
- a foam composite B having four concave portions having the same shape as the foam composite A was prepared at a position where the single-sided four-sided force of 330 X 330 mm was 10 mm away from a plate of 330 X 330 X 30 mm.
- a foam plate having a deep groove with a width of 5 mm and a depth of 27 mm is formed in a portion where the square plate body and the rectangular plate body are connected, and the foam composite plate is formed along the groove.
- a foam composite with an EVA skin, a 20 times cross-linked polyethylene foam core, a size of 2000 X I 000 X 20 mm and a hollow part of 1900 X 900 X 100 mm in the center was made.
- it When used as a mat, it is durable, cushioning, and heat-insulating. You can sleep just by laying a sheet on it, and it can be washed and disinfected, making it a good mattress for infection prevention used in hospitals. there were.
- the core is made of a foamed composite with a thin reinforcing body, it becomes an elastic mat.
- HDPE powder, cross-linked foamed LDPE particles, and two old golf balls as models of plastic waste were placed in a 100 x 100 x 100 mm mold and molded by heating at 230 ° C for 30 minutes.
- a molded body with a uniform thickness and a golf ball fixed to the center of the foamed core was obtained as shown in Fig. 7. In this way, foaming with rubber or plastic waste can be put in the core, and can be molded without significantly reducing the heat insulation and strength.
- a heat-insulated box with a size of 146 X 146 X 146 mm and a thickness of 40 mm was made by rotational molding.
- the outer skin is double-expanded LDPE and the core is 20 times larger than LDPE foam insulation box
- the outer skin is the same as 3 and the core is 20 times expanded insulation box with reinforcement
- the weight of it was 0.009, 0.139, 0.251 and 0.233, respectively.
- the insulation box was filled with hot water at 80 ° C, and the change in water temperature was measured at room temperature of 25 ° C.
- the double wall box has the fastest temperature drop, whereas the foamed composite insulation box has good heat retention. Reinforced foam composite is slightly lower in heat retention, but the reinforcement is changed to foam Then, it is possible to enhance the heat insulation while maintaining the strength.
- the dimensional change of the heat insulation box was measured for 6 months after molding, slight shrinkage was observed for the first 3 days (3%), but after that, shrinkage was not a practical problem. .
- Table 3 shows the measurement results.
- the molded body with a 0.115 mm reinforcement of LDPE is approximately 10 times that of 20-fold foamed LDPE, and the molded body with a 0.08 mm reinforcement of HDPE is 3.5 times, 0.15 mm of HDPE.
- the molded body with the reinforcement of 16.5 times was significantly stronger.
- the ratio of foamed LD PE and LDPE mixture was 6.5 times.
- a plate-shaped body of 255 x 50 x 25 mm was made, and the bending test was performed with the distance between fulcrums of 200 mm (according to the method of JIS ⁇ JIS 7203). Since no fracture occurred, the yield point was taken as the flexural modulus.
- Table 4 shows the measurement results. Compared to LDPE foam, LDPEO. 15mm reinforcement gives 4 times the flexural modulus, HDPEO. 08mm reinforcement is 2.5 times, HDPEO. 15mm reinforcement is about 7.5 times. It became extremely strong. LDPE is mixed with LDPE foam!
- LLDPE Aligni Kasei Corporation Ultra Zettas UZ3040
- Parr force dox powder 5g Parr force dox powder 5g are mixed, put in a stainless steel container, covered, and put in an air convection thermostat adjusted to 60 ° C for 2 hours.
- the above-mentioned LLDPE powder coated with a perforated dock on the surface of the particles can be obtained.
- Example 2 30 g of this powder and 15.5 g of the granular material used in Example 2 were placed in a stainless steel mold having an internal volume of 100 x 100 x 25 mm with a release agent applied to the inner surface, and the temperature was adjusted to 230 ° C. It was attached to the electric heating type oscillating rotary molding machine used in Example 1, heated under the same conditions as in Example 1, and the foamed composite molded after cooling was taken out from the mold.
- the skin of this foam composite has a good appearance despite the thinness of an average thickness of lmm, and a uniform thickness within ⁇ 0.05mm, and the core is uniform and fine bubbles.
- the skin and the core were bonded with low density and no particle boundaries.
- Example 14 Ethylene-vinyl acetate copolymer rosin powder (Sumitomo Seika Co., Ltd. K2010) lOOOg and Parr force Dox powder 6g are mixed, put in a stainless steel container, covered, and air convection constant temperature adjusted to 60 ° C By mixing in a bath for 2 hours, mixing, and cooling, the above-mentioned rosin powder having the surface coated with a powerful dough was prepared. 225 g of this powder and 50 g of the granular material used in Example 1 were placed in a stainless steel square mold with an inner volume of 200 ⁇ 200 ⁇ 25 mm coated with a release agent, and the electric heating type shaking used in Example 1 was used.
- the ethylene / vinyl acetate copolymer resin used for the skin is a kind of thermoplastic elastomer
- the resulting foam composite has moderate cushioning properties and is effective as a material for safety devices.
- Heat-resistant grade polyamide 12-fat powder (L1640P manufactured by Daicel Degussa Co., Ltd.) 100g and LLDPE powder 50g coated with the Parr Doc made in Example 13 and 61g of granules used in Example 1 on the inner surface Place in a stainless steel square mold with an internal volume of 200 X 200 X 25mm coated with a release agent, and attach it to the electric heating type oscillating rotary molding machine used in Example 1 and heat at 160 ° C for 25 minutes The temperature was raised to 205 ° C. and heated for 25 minutes, and the foamed composite molded after cooling was taken out from the mold. The skin of this foam composite was good in appearance despite its average thickness of 1.5 mm, and the thickness variation was uniform within ⁇ 0.05 mm. A foam composite with excellent impact resistance, chemical resistance and oil resistance was obtained.
- Methacrylic acid alkyl ester copolymer rosin powder (Mitsubishi Rayon Co., Ltd. LP-3106) 200 g and double-layer foam pellets (5.7 times) 140 g inner volume with release agent applied on the inner surface 200 X 200 X 25mm Placed in a stainless steel square mold, attached to the electric heating type oscillating rotary molding machine used in Example 1, heated at 250 ° C for 40 minutes, cooled and then molded foam composite from the mold Removed. A foam composite with a smooth, transparent, hard skin having an average thickness of 2.0 mm was obtained. A container excellent in appearance with heat insulation was obtained. [0082] [Example 17]
- Epoxy resin powder for powder coating (EY-7, manufactured by Shinto Paint Co., Ltd.) 90 g and stainless steel square with inner volume of 100 X 100 X 25 mm with 50 g of granule used in Example 1 coated with release agent on the inner surface Placed in the mold, attached to the electric heating type oscillating rotary molding machine used in Example 1, heated at 160 ° C for 30 minutes, then heated to 230 ° C and heated for 20 minutes, cooled and molded
- the foam composite was removed from the mold. Average thickness of skin 2. A foam composite with a smooth and hard skin of Omm was obtained. It could be applied to a heat insulation container.
- a cylindrical heat insulation tank made of foam composite with an inner diameter of 00mm, a depth of 500mm and a thickness of 40mm was made.
- the epidermis is 2 mm thick and the core is 40 times the diameter of 10 mm foam with 0.1 mm reinforcements, each independent and the ratio of foam weight to reinforcement weight is 3: 1. It was.
- this foamed composite container was filled with 80 ° C hot water and placed in a room at 30 ° C, it was a strong, heat-insulating molded product that took 5 hours to reach 60 ° C.
- EVA ethylene vinyl acetate copolymer
- 20wt% vinyl acetate component as skin material
- powdered aluminum hydroxide 120PHR, decabromodiphenyloxide 25PHR, antimony hydroxide 10PHR Compound powder kneaded in 60g
- This resin has flame resistance equivalent to UL standard V0
- HDPE 25g as core material
- magnesium hydroxide 25PHR powdered aluminum hydroxide 30PHR
- diazocarbonamide 20PHR (This resin has flame resistance equivalent to UL standard VO! /, And is)
- Example 2 Using the same rotary molding machine as in Example 1, the mold was heated at a mold temperature of 230 ° C. and rotating for 30 minutes. After cooling, the mold was taken out and a sample shown in the photograph of FIG. 10 was prepared. The obtained sample was a calorimeter test for flame retardant evaluation of building materials and met the criteria for the flame retardant performance test of Building Standard Law No. 2.
- a composite with a reinforcing body in the core is a rigid body with an apparent specific gravity of 1Z4 of wood and a bending strength equivalent to that of wood, and an elastic body that is deformed by impact but can be restored without breaking, making it lightweight and strong. Can be used for any application that requires.
- this molded product can be used as a recycled plastic product, and waste can be put into the center of the molded product to replace wood, which is also expected from the viewpoint of effective use of resources.
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
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CN2004800305023A CN1867437B (zh) | 2003-10-17 | 2004-10-15 | 塑料发泡复合体的制造方法 |
CA 2542367 CA2542367A1 (en) | 2003-10-17 | 2004-10-15 | Method for producing plastic foamed composite |
ES04792445.1T ES2565453T3 (es) | 2003-10-17 | 2004-10-15 | Procedimiento para producir material compuesto espumado de plástico |
EP04792445.1A EP1690662B1 (en) | 2003-10-17 | 2004-10-15 | Method for producing plastic foamed composite |
US10/575,965 US8147733B2 (en) | 2003-10-17 | 2004-10-15 | Process for producing plastic foam composite |
DK04792445.1T DK1690662T3 (en) | 2003-10-17 | 2004-10-15 | Process for producing foamed plastic composite |
PL04792445T PL1690662T3 (pl) | 2003-10-17 | 2004-10-15 | Sposób wytwarzania spienionego kompozytu z tworzywa sztucznego |
JP2005513566A JP4074319B2 (ja) | 2003-10-17 | 2004-10-15 | プラスチック発泡複合体の製造方法 |
AU2004282034A AU2004282034A1 (en) | 2003-10-17 | 2004-10-15 | Process for producing plastic foam composite |
IS8424A IS8424A (is) | 2003-10-17 | 2006-04-21 | Aðferð við að framleiða plastfroðublöndu |
NO20062203A NO20062203L (no) | 2003-10-17 | 2006-05-16 | Fremgangsmate for a produsere plastisk skumkompositt |
US13/412,600 US9931770B2 (en) | 2003-10-17 | 2012-03-05 | Process for producing plastic foam composite |
Applications Claiming Priority (2)
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JP2003389941 | 2003-10-17 | ||
JP2003-389941 | 2003-10-17 |
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US10/575,965 A-371-Of-International US8147733B2 (en) | 2003-10-17 | 2004-10-15 | Process for producing plastic foam composite |
US13/412,600 Division US9931770B2 (en) | 2003-10-17 | 2012-03-05 | Process for producing plastic foam composite |
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EP (1) | EP1690662B1 (ja) |
JP (1) | JP4074319B2 (ja) |
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AU (1) | AU2004282034A1 (ja) |
CA (1) | CA2542367A1 (ja) |
DK (1) | DK1690662T3 (ja) |
ES (1) | ES2565453T3 (ja) |
IS (1) | IS8424A (ja) |
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JP2007169540A (ja) * | 2005-12-26 | 2007-07-05 | Dainippon Plastics Co Ltd | 樹脂被覆発泡ペレット |
WO2008078818A1 (ja) * | 2006-12-27 | 2008-07-03 | Shiina Kasei Co. | プラスチックサンドイッチ構造体の製造方法 |
WO2012153579A1 (ja) * | 2011-05-09 | 2012-11-15 | 日東電工株式会社 | 熱発泡性樹脂組成物、熱発泡性樹脂シート、発泡体およびその製造方法 |
WO2013099542A1 (ja) * | 2011-12-26 | 2013-07-04 | トヨタ車体株式会社 | 車両の衝撃吸収部材 |
US9221413B2 (en) | 2011-12-26 | 2015-12-29 | Toyota Shatai Kabushiki Kaisha | Vehicle impact-absorbing member |
JP2015535783A (ja) * | 2012-10-04 | 2015-12-17 | エルビュス グルプ エス アー エス | プロジェクタイルの衝撃による過圧に耐性があるタンク |
JP2014198380A (ja) * | 2013-03-29 | 2014-10-23 | 積水化成品工業株式会社 | 発泡成形体の製造方法及び発泡成形体 |
JP2016078292A (ja) * | 2014-10-15 | 2016-05-16 | 株式会社ジェイエスピー | 表皮材被覆発泡粒子成形体 |
JP2018027683A (ja) * | 2016-05-12 | 2018-02-22 | ザ・ボーイング・カンパニーThe Boeing Company | 強力接着層を介して装飾層をパネルに結合するための方法及び装置 |
US11130318B2 (en) | 2016-05-12 | 2021-09-28 | The Boeing Company | Panels having barrier layers and related methods |
JP2019527154A (ja) * | 2016-06-30 | 2019-09-26 | クラルマン クンストシュトッフフェアアルバイトゥング ゲーエムベーハー | 自動車用複合部品およびその製造方法 |
JP2021504523A (ja) * | 2017-11-27 | 2021-02-15 | エボニック オペレーションズ ゲーエムベーハー | 航空機内装品において使用するためのpesuパーティクルフォーム |
Also Published As
Publication number | Publication date |
---|---|
CN1867437A (zh) | 2006-11-22 |
EP1690662A4 (en) | 2011-12-07 |
US9931770B2 (en) | 2018-04-03 |
US20120270044A1 (en) | 2012-10-25 |
EP1690662A1 (en) | 2006-08-16 |
AU2004282034A1 (en) | 2005-04-28 |
EP1690662B1 (en) | 2015-12-23 |
IS8424A (is) | 2006-04-21 |
US20070125780A1 (en) | 2007-06-07 |
CA2542367A1 (en) | 2005-04-28 |
NO20062203L (no) | 2006-07-12 |
PL1690662T3 (pl) | 2016-06-30 |
US8147733B2 (en) | 2012-04-03 |
CN1867437B (zh) | 2011-08-24 |
JPWO2005037518A1 (ja) | 2006-12-28 |
DK1690662T3 (en) | 2016-03-21 |
ES2565453T3 (es) | 2016-04-04 |
JP4074319B2 (ja) | 2008-04-09 |
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