WO2004080680A1 - 再生樹脂の製造方法、およびその方法により製造された再生樹脂を含む樹脂材料 - Google Patents
再生樹脂の製造方法、およびその方法により製造された再生樹脂を含む樹脂材料 Download PDFInfo
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- WO2004080680A1 WO2004080680A1 PCT/JP2003/002880 JP0302880W WO2004080680A1 WO 2004080680 A1 WO2004080680 A1 WO 2004080680A1 JP 0302880 W JP0302880 W JP 0302880W WO 2004080680 A1 WO2004080680 A1 WO 2004080680A1
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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
- 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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
-
- 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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B2017/001—Pretreating the materials before recovery
- B29B2017/0021—Dividing in large parts
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0203—Separating plastics from plastics
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0268—Separation of metals
- B29B2017/0272—Magnetic separation
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0279—Optical identification, e.g. cameras or spectroscopy
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- 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
- B29K2021/00—Use of unspecified rubbers as moulding material
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- 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
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
-
- 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
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
-
- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
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- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
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- 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
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
-
- 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
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0026—Flame proofing or flame retarding agents
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- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
-
- 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
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
- B29L2031/3061—Number plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/744—Labels, badges, e.g. marker sleeves
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a method for regenerating a resin from a resin molded body included in electronic devices, home appliances, interiors, and the like. Furthermore, the present invention also relates to a resin material containing a recycled resin obtained by the method. Background art
- a resin material is often used as a material of the housing from the viewpoint of moldability and lightness. Therefore, in such a field, it is strongly desired to establish a technology for recycling resin casings.
- Examples of the resin housing recycling technology include a thermal recycling technology that uses the resin housing as a heat source and a cascading method that does not need to consider the deterioration of the properties of the recycled resin obtained by recycling the resin housing.
- One example is recycling technology for the use of private storage.
- an example of a method for producing a recycled resin in a recycling technique for cascade use will be specifically described with reference to FIG. First, the collected personal computers, printers, mobile phones, and the like are dismantled, and the resin casings contained therein are separated and collected (dismantling and collecting step S 1 ′).
- the degree of deterioration of the resin contained in the resin housing varies greatly depending on the usage state of the recovered product, etc., and includes recycled resin obtained by recycling technology as shown in Fig. 6. It was difficult to stably obtain the same level of physical properties and aesthetics as the virgin resin material. Therefore, it is difficult to use a resin material containing recycled resin as a molding material for resin casings that require high fluidity and high strength (for example, resin casings that made up recovered products). Was.
- JP-A-2000-198116 and JP-A-2001-30248 a technique capable of obtaining the same physical properties of a resin material containing a recycled resin obtained by a recycling technique at the same level as a virgin resin material is disclosed in JP-A-2000-198116 and JP-A-2001-30248. It is disclosed and known.
- JP-A-2000-198116 and JP-A-2001-30248 do not select the material of the resin casing of the collected product, and thus the material of the resin casing of the collected product.
- the metal separation process such as the magnetic separation process is performed several times, the realignment process is also performed after the crushing process. Therefore, if metal parts remain in the crushing step of crushing the resin casing by the crusher, the metal parts will also be crushed together with the luster casing, and the damage to the crusher will be large. Become.
- the amount of metal to be removed after crushing is relatively large, the amount of resin that adheres to the metal and is removed together with the metal increases, and the resin recovery efficiency may decrease. Disclosure of the invention
- an object of the present invention is to provide a case in which various materials are mixed as the material of a resin casing of a recovered product, and the same physical properties and aesthetic appearance as those of a virgin resin material can be obtained by separating each material.
- Another object of the present invention is to provide a method for producing a recycled resin that can suppress a decrease in resin recovery efficiency and reduce damage to a crusher in a crushing step.
- Another object of the present invention is to provide a resin material containing recycled resin produced by such a production method.
- the method for producing a recycled resin according to the first aspect of the present invention includes: a dismantling and collecting step of dismantling a product having a resin molded body and collecting the resin molded body; and removing unnecessary substances including metal parts from the resin molded body.
- the method includes the steps of: (i) detecting a metal part as a process prior to the crushing process; The method includes a metal detection step and, as a post-step of the crushing step, a metal separation step of separating and removing metal remaining in the crushed material obtained in the crushing step from the crushed material.
- the resin molded product recovered from the product is made of various materials
- the resin molded product can be separated for each material in the separation step. Therefore, by manufacturing the recycled resin for each of the separated materials, the physical properties of the obtained recycled resin can be stabilized.
- a reduction in the impact strength caused by mixing of the metal in the regenerated resin to be produced and forming a discontinuous phase in the mixed portion is suppressed.
- the possibility that metal parts and the like remain on the resin molded body crushed in the crushing step is further reduced. For this reason, for example, even when the resin molded body is crushed using a crushing machine having a blade, blade spilling of the blade is less likely to occur. Therefore, reducing the damage to the crusher be able to.
- the amount of metal to be removed in the metal separation step is reduced, the amount of resin that adheres to the metal and is removed together with the metal is reduced. Therefore, it is possible to suppress a decrease in the resin recovery efficiency.
- the fractionation step further includes a flame retardancy test step for measuring the flame retardancy of the resin molded article.
- a flame retardancy test step for measuring the flame retardancy of the resin molded article.
- the presence or absence of a flame retardant is determined, and the resin molded body containing the flame retardant is separated and removed, thereby stabilizing the physical properties of the manufactured recycled resin and improving environmental friendliness. be able to.
- the separating step further includes a color difference measuring step of measuring a color difference of the green body.
- a color difference measuring step of measuring a color difference of the green body.
- the method for producing recycled resin uses crushed materials that have undergone a metal separation process.
- the method may further include a crushed material separation step of separating using a sieve having a mesh size of 55 mm.
- a crushed material separation step of separating using a sieve having a mesh size of 55 mm.
- the detection of the metal component in the metal detection step is performed using a metal detector.
- a metal detector This enables more thorough detection of metal parts than visual inspection, and thus, it is possible to reduce the possibility of remaining metal parts.
- the metal separation step is performed by magnetic separation using a magnetic force.
- the metal separation step it is possible to suppress mixing of the metal into the recycled resin. Therefore, it is possible to suppress a decrease in impact strength due to a metal component being mixed in the recycled resin and a discontinuous phase being formed in the mixed portion. Further, by thoroughly removing the metal component, the occurrence of poor appearance can be suppressed.
- the magnetic separation is preferably performed using a magnet having a magnetic force with a residual magnetic flux density of 1000 gauss or more at the magnetic pole portion.
- a resin material including a recycled resin manufactured by the above manufacturing method and a virgin resin.
- the resin material further includes a filler and / or a flame retardant selected from the group consisting of glass fibers, carbon fibers, glass flakes, glass beads, my strength, talc, and rubber.
- a filler and / or a flame retardant selected from the group consisting of glass fibers, carbon fibers, glass flakes, glass beads, my strength, talc, and rubber.
- FIG. 1 is a flowchart showing a process for producing a recycled resin according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an example of a resin molded article that is dismantled and collected in the dismantling and collecting step.
- FIG. 3 is a diagram showing an example of the resin molded body after the removal step.
- FIG. 4 is a diagram showing the compositions of the resin materials produced in the examples and comparative examples of the present invention.
- FIG. 5 is a diagram summarizing the physical properties and evaluation results of the resin materials produced in Examples and Comparative Examples of the present invention.
- FIG. 6 is a flowchart of a conventional recycled resin material manufacturing method. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a flowchart showing a series of steps from disassembly and recovery of a recovered product (for example, various types of personal computers and printers) to production of recycled resin. Through these steps, a resin material of a predetermined material can be regenerated from various collected products.
- Fig. 2 is a diagram showing an example of a resin molded product disassembled and recovered from the recovered product (part of the housing of a desktop personal computer). In the disassembly and recovery step S1, the recovered product having the resin molded product is dismantled, and the resin molded product (see FIG. 2) is recovered from the recovered product.
- Examples of collected products include various types of personal computers and their peripheral devices (printers, keyboards and displays, etc.), electronic devices such as copiers, home appliances, interiors, etc., which have resin moldings.
- Examples of the material of the resin molding include acrylonitrile-butadiene-styrene (ABS) resin, polycarbonate (PC) resin, polyphenyl ether (PPE) resin, polyamide (PA) resin, liquid crystal polymer (LCP) resin, and polystyrene.
- ABS acrylonitrile-butadiene-styrene
- PC polycarbonate
- PPE polyphenyl ether
- PA polyamide
- LCP liquid crystal polymer
- Resins such as lactic acid (PLA) resin, polyethylene terephthalate (PET) resin, polyphenylene sulfide (PPS) resin, polyacetal (POM) resin, polystyrene (PS) resin, or contain these resins And resin alloys.
- PLA lactic acid
- PET polyethylene terephthalate
- PPS polyphenylene sulfide
- POM polyacetal
- PS polystyrene
- Unnecessary objects include, for example, attachments 10 such as labels and rubber feet, metal parts 11 such as screws and embedded bosses, and dirt such as dust and dirt.
- the attached matter 10 is scraped off with a spatula or the like, or is removed using a grinder or other grinding machine.
- screws and springs are removed manually, and buried bosses are cut out of the surrounding resin in consideration of work efficiency. If it is dirty, blow it off using an air gun, or wipe it off with a cloth to prevent it from flying. In addition, do not blow off with an air gun. If dirt that cannot be removed (for example, highly viscous grease) remains in the resin molded body, the resin molded body is excluded from the manufacturing process and, for example, thermal recycling (the resin is melted to separate the dirt) It is preferable to perform the above.
- the sorting process S 3 includes a material discriminating process S 31, a combustion test process S 32, and a color difference measuring process S 33, and the resin molded product is sorted based on the material, the presence or absence of a flame retardant, and the color tone. .
- a check is also made to determine whether or not the unnecessary material 1 remains in the resin molded product by visual inspection or the like. If the residual of the unnecessary material 1 is confirmed (NG), the resin molded product is removed. This is fed back to the removal step S2. On the other hand, when the residue of the unnecessary material 1 is not confirmed (OK), the resin molded body is moved to the next step.
- the material of the resin molded body is determined.
- a method for this determination there is a method in which a resin molded body is engraved and classified roughly according to a material indication, and then the resin molded body is subjected to a material classifier in order to more accurately and reliably determine the material.
- the resin molded body can be more surely separated for each material (for example, ABS resin, PC resin, etc.). Therefore, even when the resin is regenerated from a resin molded body in which various materials are mixed, the physical properties of the regenerated resin can be stabilized.
- the combustion test step S32 it is determined whether or not the resin molded product contains a flame retardant.
- the presence or absence of a flame retardant is confirmed by the indication engraved on the resin molded body, and after classification, the resin molded body without the indication of the presence of the flame retardant and the flame retardant are included.
- a method of cutting out a test piece from each of the resin molded bodies with the indication that there is no fire, and performing a flame-retardant test such as a UL94 combustion test method on the test piece is given.
- the color difference ( ⁇ ) of the resin molded body with respect to the color difference standard is measured to determine the color tone of the resin molded body.
- a method for this determination there is a method of measuring the color difference from the color tone of the resin molded body using white as a color difference standard using a color difference meter, and performing classification according to the obtained color difference ( ⁇ ).
- a color tone close to white for example, ⁇ ⁇ ⁇ 2
- the color difference ( ⁇ ) is a value quantitatively indicating a degree of a color shift from a color (for example, white) used as a color difference standard, and a larger value means a larger color shift.
- the metal detection step S4 it is detected whether or not a metal part such as a screw remains in the resin molded body.
- a metal part such as a screw remains in the resin molded body.
- this detection method there is a method of using a metal detector to check whether or not a metal component remains in a resin molded body. According to this method, it is possible to reliably detect the metal part even by visual inspection, so that the possibility of the metal part remaining can be reduced more thoroughly. If it is confirmed that the metal part remains on the resin molded body (NG), the resin molded body is fed back to the removing step S2, and if no residual metal part is confirmed ( ⁇ ⁇ ), The compact is transferred to the next step.
- the crushing step S5 the resin molded body in which the metal component is not detected in the metal detection step S4 is crushed, and a crushed material R R is obtained.
- the crushing method include a method in which crushing is performed using a crusher provided with a cover mesh having a predetermined mesh size until the size of the resin molded body becomes equal to or smaller than a mesh size.
- the mesh size is preferably 8 to 1 Omm.
- the mesh size is less than 8 mm, the amount of fine powder (for example, 5 mm or less) increases, and the amount of crushed material RR that is removed in the crushed material separation process S7 described later increases, resulting in lower recycling efficiency. Resulting in.
- the mesh size is larger than 1 Omm, the crushed material RR is too large, so that problems such as clogging are likely to occur in subsequent processing, and it is difficult to uniformly knead the crushed material RR. There is.
- metal powder mixed in the broken frame material RR is separated and removed.
- metal powder is separated by magnetic separation using magnetic force.
- There is a method of removing. According to such a method for example, even when the metal powder is mixed in the crushing step S5, the metal powder is removed in the metal separation step S6. Can be. Therefore, it is possible to suppress a reduction in impact strength due to the metal powder being mixed in the recycled resin and the formation of a discontinuous phase in the mixed portion.
- metal powder having a size that can be visually recognized for example, a diameter of 0.2 mm or more
- appearance defects can be suppressed.
- the magnetic separation is preferably performed using a magnet having a magnetic force with a residual magnetic flux density of 1000 gauss or more at the magnetic pole portion.
- the separation and removal method includes a method of separating and removing crushed material RR of 1 to 5 mm or less using a screen having a mesh size of 1 to 5 mm. According to such a method, not only foreign substances (metal powder, etc.) that could not be removed in the removal step S2 and the metal separation step S6 can be separated and removed together with the fine crushed material RR, but also crushed. The distribution range of the size of the recycled resin can be narrowed.
- a recycled resin having more stable physical properties can be obtained, and the distribution range of the size of the recycled resin can be narrowed, so that the kneading of the recycled resin can be performed in a more balanced manner (the distribution of the size of the recycled resin). (Because of the narrow range), it becomes easier to obtain a more uniform resin.
- a recycled resin is produced from a resin molded body obtained by disassembling the recovered product. Further, by kneading the recycled resin and the virgin material, a resin material having the same physical properties as the resin composed of only the virgin material can be obtained. Furthermore, by adding a filler selected from the group consisting of glass fiber, glass fiber, glass fiber, glass flakes, glass beads, my strength, talc and rubber, and / or adding a regenerated resin, It is also possible to obtain a resin material having properties that are superior to those of a resin material consisting of virgin material alone.
- the collected product was dismantled and the resin casing was collected.
- ABS resin casing whose material has been identified as ABS resin in the material discrimination step. Removed from the manufacturing process. Next, a flame test was performed on a test piece cut out of the ABS resin casing without indication of the addition of a flame retardant by the UL 94 combustion test method, and the flame retardancy was determined.
- ABS resin casing with flame retardancy of HB (UL 94 standard) (hereinafter referred to as ABS resin casing (HB)) and an ABS resin casing with V-2 (UL 94 standard) or higher (hereinafter AB) Separated into S resin casing (referred to as ⁇ V-2), and ABS resin casing ( ⁇ V-2) is assumed to have a flame retardant added. And removed from the recycled resin manufacturing process. In addition, the resin casing in which unnecessary substances were found to remain in the process was fed back to the removal process.
- the ABS resin casing (HB) was applied to a color difference meter (trade name: CM-2600d, manufactured by Minonoleta Co., Ltd.), and the color difference (mm E) from the color tone of the ABS resin casing (HB) was measured using white as the color difference standard. . Then, it is separated into an ABS resin body (HB) with ⁇ greater than 2 and an ABS resin casing (HB) with ⁇ of 2 or less, and an 83 resin casing (HB) with less than 2 is extracted. did. The resin housing in which unnecessary substances were found to remain in the process was fed back to the removal process.
- ABS resin housing (HB) with ⁇ E of 2 or less passed through a classification process consisting of a material discrimination process, a combustion test process, and a color difference measurement process, and a tabletop metal detector (Product name: MS-31 14-35S, Nisshin (Electronic Industry Co., Ltd.), and examined whether metal parts (screw, spring, embedded boss, etc.) remained in the ABS resin housing (HB). Then, the resin housing in which the remaining metal parts were confirmed was fed back to the removal process.
- ABS resin body in which no metal parts were confirmed in the metal detection process was crushed by a crusher (screen mesh size: 8 mm).
- crushed material crushed in the crushing process is replaced with a magnet rod (recessed magnetic flux density of 12,000 gauss at the pole part) (two-stage five-piece type, manufactured by Yamasan Co., Ltd.)
- the metal powder mixed in the crushed material was separated and removed by passing through the installation portion of the crushed material.
- the crushed material having passed through the metal separation step was separated and removed with a crushed material of 5 mm or less.
- a disk (diameter 15 mm, thickness 0.5 mm) was prepared by hot pressing using the crushed material A prepared as described above, and the color tone of the disk was examined. As a result, it was confirmed that the discs had roughly four color distributions of ivory, light gray, dripping, and dark gray. The gray color is considered to be caused by burning and dirt at the stage of manufacturing the disc.
- a sample was taken from each of the portions showing each color, and the components of the sample were analyzed using an FT-IR analyzer (trade name: Spectrum, manufactured by PerkinElmer Inc.). As a result, each color sample was ABS resin.
- Resin material 1 is a mixture of 2.0 wt% of crushed material A and 80 wt% of AVS resin (trade name: VD200, manufactured by UMGABS Co., Ltd.) as a virgin material.
- Resin material 2 is composed of 20 wt% of crushed material A and AVS resin as virgin material (trade name: VD200, UMGAB S strain) 35 wt% of PC resin (trade name: A1900, manufactured by Idemitsu Kosan Co., Ltd.), 35 wt% of phosphorus-based flame retardant (trade name: ADK STAB, manufactured by Asahi Denka Kogyo Co., Ltd.) 10 wt% It is a mixture.
- the resin materials 1 to 3 were melt-kneaded at about 230 ° C using a twin-screw extruder (trade name: KZW-15, manufactured by Technovel Corporation). Furthermore, each of the melt-kneaded resin materials 1 to 3 was formed into pellets using a strand cut pelletizer (trade name: SCP-102, manufactured by Technovel Corporation).
- the bending strength of the molded samples 1 to 3 produced as described above was measured. Specifically, using a universal testing machine (trade name: Instron 5581, manufactured by Instron Japan), a three-point bending test was performed on each molded sample 1 to 3 in accordance with JISK 7055. The distance between the two points of support (span) was set to 51.2 mm, and the bending strength of the sample was measured by applying a pressing force to the approximate center between the two points of support.
- the molded sample 1 exhibited a bending strength of 830 kgf / cm 2
- the molded sample 2 exhibited a bending strength of 981 kgf / cm 2
- the molded sample 3 exhibited a flexural strength of 1020 kgf / cm 2 .
- the resin material has a bending strength of 800 kgf Zcm 2 or more.
- the molded sample 1 exhibited a flexural modulus of 29600 kg kg / cm 2
- the molded sample 2 exhibited a flexural modulus of 34200 kgf / cm 2
- the molded sample 3 exhibited a flexural modulus of 48000 kgf Zcm 2 .
- the resin material has a flexural modulus of 25000 kgf / cm 2 or more.
- Izod impact test conforming to JISK 7110, use an injection molding machine (trade name: SG50, manufactured by Sumitomo Heavy Industries, Ltd.) from the resin material 1-3 pellets obtained as described above.
- Izod impact test specimens 1-3 (length: 126 mm, width: 12.8 mm, thickness: 3.2 mm, notch depth: 2.54 mm ) was molded into a mold, and the impact resistance of Izod impact test specimens 1 to 3 was examined.
- an Izod impact test was performed using an Izod impact tester (trade name: Impact Tester, manufactured by Toyo Seiki Seisaku-sho, Ltd.) in accordance with JIS K71010.
- the Izod impact value in flatwise impact was 11 kg kgcmzcm for Izod impact test specimen 1, 18 kgfcm / cm for Izod impact test specimen 2, 18 kgfcm / cm for Izod impact test, was 35 kgf cmZcm. These results are shown in Figure 5. It is desired that the resin material has an Izod impact strength of 8 kgfcm / cm or more.
- a test piece for combustion test 1 to 3 (1) was prepared using an injection molding machine (trade name: SG50, manufactured by Sumitomo Heavy Industries, Ltd.). 25mmX13mmX1mm) was prepared and a combustion test was conducted. Specifically, a burner flame of about 2.5 cm was brought into contact with each of the test specimens in a UL combustion test chamber (trade name: HVUL, manufactured by Toyo Seiki Co., Ltd.) according to the UL 94 vertical combustion test method. A flame test was performed to evaluate the flame retardancy. Figure 5 shows these results.
- CM-2600d manufactured by Minolta Co., Ltd.
- the molded article sample 1 showed a color difference of 1.2
- the molded article sample 2 showed a color difference of 1.8
- the molded article sample 3 showed a color difference of 1.8.
- Figure 5 shows these results. It is desired that the resin material has a color difference of 2 or less.
- Samples 1 to 3 are prepared by hot pressing using resin materials 1 to 3 and foreign matter that can be visually recognized by observing the appearance of the sample disks 1 to 3 (Appears black) with a diameter of 0.2 mm or more And those having a size of 0.1111111 or more and less than 0.2 mm were counted.
- sample disk 1 0 foreign substances with a diameter of 0.2 mm or more were detected per disc, and one foreign substance with a diameter of 0.1 mm or more and less than 0.2 mm was detected per disc.
- sample disk 2 In sample disk 2, 0 foreign substances having a diameter of 0.2 mm or more were detected per disk, and two foreign substances having a diameter of 0.1 mm or more and less than 0.2 mm were detected per disk. In sample disk 3, 0 foreign particles with a diameter of 0.2 mm or more were detected per disk, and 2 foreign particles with a diameter of 0.1 mm or more and less than 0.2 mm were detected per disk. Figure 5 shows these results. In evaluating foreign substances, foreign substances having a diameter of 0.2 mm or more (dot-like dirt) are not included, and foreign substances having a diameter of 0.11111111 or more and less than 0.2 mm are included. It is desirable that the number be two or less.
- the collected product was dismantled and the resin casing was collected.
- ABS resin casing2 It was separated from the ABS resin casing2), and the ABS resin casing ( ⁇ V-2) was removed from the recycled resin manufacturing process assuming that a flame retardant was added.
- ABS resin casing (HB) which was judged to be white by the naked eye, was extracted.
- a recycled resin mainly composed of ABS resin was produced as a crushed material B having a size of 2 Omm or less.
- a disk (diameter: 15 mm, thickness: 0.5 mm) was prepared by hot pressing using the crushed material B prepared as described above, and the color tone of the disk was examined. As a result, it was confirmed that the disc had a total of four color distributions of ivory, light gray, and drip. 1. dark gray. The gray color is considered to be caused by burning and dirt at the stage of manufacturing the disc. Then, take the respective samples from the portion indicating the color of the, components of the sample FT-IR analyzer (trade name: S pe C tr um, Ltd. Pas one Kin'eruma Ltd. I) were analyzed using.
- Resin material 4 is a mixture of 20 wt% of crushed material B and 80 wt% of ABS resin (trade name: VD200, manufactured by UMGAB S Co., Ltd.) as a virgin material.
- the resin material 5 is 100 wt% of ABS resin (trade name: VD200, manufactured by UMGABS Corporation) as a virgin material.
- Fig. 4 shows the composition of each material.
- resin materials 4 to 5 were pelletized in the same manner as in the example.
- a molded product sample 4 to 5 (each having a length of 50 mm) was prepared using an injection molding machine (trade name: SG50, manufactured by Sumitomo Heavy Industries, Ltd.). (1 26 mm, width 12.8 mm, thickness 3.2 mm) was molded.
- Izod impact test specimens 4 to 5 (length 126 mm, width 12.8 mm, thickness 3. A notch having a depth of 2 mm and a depth in the thickness direction of 2.54 mm) was molded into a mold, and the impact resistance of Izod impact test specimens 4 to 5 was examined.
- the Izod impact value in the flatwise impact was 6 kg ⁇ cm / cm for Izod impact test specimen 4 and llkgfcm / cm for Izod impact test specimen 5. These results are shown in Figure 5.
- the flow length was measured when the pellets of the resin materials 1 to 3 were each melted at 220 ° C and the molten resin materials 1 to 3 were injection-molded at an injection pressure of 1600 g ⁇ / cm 2 . .
- the molten resin material 4 showed a flow length of 142 mm
- the molten resin material 5 showed a flow length of 153 mm.
- Figure 5 shows these results.
- test piece for a combustion test 4 to 4 was prepared using an injection molding machine (trade name: SG50, manufactured by Sumitomo Heavy Industries, Ltd.).
- sample disks 4 to 5 (diameter 15 mm, thickness 0.5 mm) are prepared by hot pressing, and foreign matter (black) can be visually recognized by observing the appearance of the sample disks 4 to 5. ) And those with a diameter of 0.2 mm or more and those with a diameter of 0.11111111 or more and less than 0.2 mm were counted. As a result, in sample disk 4, five foreign substances having a diameter of 0.2 mm or more were detected per disk, and 23 foreign substances having a diameter of 0.11111111 or more and less than 0.2 mm were detected per disk. In sample disk 5, 0 foreign particles with a diameter of 0.2 mm or more were detected per disk, and 0.5 foreign particles with a diameter of 0.111 to 1111 or more and less than 0.2 mm were detected per disk. Figure 5 shows these results.
- the resin material 4 containing the recycled resin (crushed material B) obtained by the conventional manufacturing method is Although the properties of the resin material do not reach the standards desired as a resin material, the resin material 1 containing the recycled resin (crushed material A) obtained by the production method according to the present invention has the results that the physical properties satisfy all the predetermined criteria. became. Also, as compared with the physical properties of the resin material 5 composed of only virgin material, the physical properties of the resin material 1 were almost the same, and the physical properties of the resin materials 2 and 3 were both higher than that of the resin material 5.
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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Abstract
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2003/002880 WO2004080680A1 (ja) | 2003-03-11 | 2003-03-11 | 再生樹脂の製造方法、およびその方法により製造された再生樹脂を含む樹脂材料 |
CNB038261200A CN100519122C (zh) | 2003-03-11 | 2003-03-11 | 再生树脂的制造方法及含有由该方法制造的再生树脂的树脂材料 |
JP2004569335A JP4460460B2 (ja) | 2003-03-11 | 2003-03-11 | 再生樹脂の製造方法、およびその方法により製造された再生樹脂を含む樹脂材料 |
AU2003211606A AU2003211606A1 (en) | 2003-03-11 | 2003-03-11 | Method for producing recycled resin, and resin material containing recycled resin produced by that method |
TW92105662A TWI233875B (en) | 2003-03-11 | 2003-03-14 | Method of producing recycled resin, and resin material including recycled resin produced by the method |
US11/221,970 US7547734B2 (en) | 2003-03-11 | 2005-09-09 | Method for producing recycled resin, and resin material containing recycled resin produced by that method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2003/002880 WO2004080680A1 (ja) | 2003-03-11 | 2003-03-11 | 再生樹脂の製造方法、およびその方法により製造された再生樹脂を含む樹脂材料 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/221,970 Continuation US7547734B2 (en) | 2003-03-11 | 2005-09-09 | Method for producing recycled resin, and resin material containing recycled resin produced by that method |
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WO2004080680A1 true WO2004080680A1 (ja) | 2004-09-23 |
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PCT/JP2003/002880 WO2004080680A1 (ja) | 2003-03-11 | 2003-03-11 | 再生樹脂の製造方法、およびその方法により製造された再生樹脂を含む樹脂材料 |
Country Status (6)
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US (1) | US7547734B2 (ja) |
JP (1) | JP4460460B2 (ja) |
CN (1) | CN100519122C (ja) |
AU (1) | AU2003211606A1 (ja) |
TW (1) | TWI233875B (ja) |
WO (1) | WO2004080680A1 (ja) |
Cited By (6)
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JP2007331300A (ja) * | 2006-06-16 | 2007-12-27 | Sharp Corp | プラスチックの再資源化方法、ならびに再生プラスチック原料および再生プラスチック成形体 |
JP2008260208A (ja) * | 2007-04-12 | 2008-10-30 | Mitsubishi Electric Corp | 再生プラスチック材料選別方法 |
JP2009107126A (ja) * | 2007-10-26 | 2009-05-21 | Sharp Corp | プラスチックの再資源化方法、プラスチック原料、プラスチック成形体およびそれらの製造方法、ならびに、回収部材格納手段 |
JP2010208085A (ja) * | 2009-03-09 | 2010-09-24 | Sharp Corp | プラスチック廃材の再資源化方法、ならびに、プラスチック原料、プラスチック部材およびそれらの製造方法 |
JP2011089026A (ja) * | 2009-10-22 | 2011-05-06 | Mitsubishi Electric Corp | 再生プラスチック部品及びこの再生プラスチック部品を用いた空気調和装置、並びに再生プラスチック部品の製造方法。 |
JP2014177596A (ja) * | 2013-03-15 | 2014-09-25 | Ricoh Co Ltd | 再生樹脂組成物、成形品、画像形成装置及び再生樹脂組成物の製造方法 |
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CN105415696B (zh) * | 2008-03-27 | 2019-01-15 | 普立万公司 | 制备改良基材的方法及改良基材 |
AT506403B1 (de) * | 2008-06-17 | 2009-09-15 | Erema | Verfahren und anordnung zur vorbehandlung von polymermaterialien |
CN112339157A (zh) * | 2019-08-07 | 2021-02-09 | 仪城企业股份有限公司 | 多层聚酰胺材料的回收方法 |
RU2760131C1 (ru) * | 2021-01-26 | 2021-11-22 | Франц Анатольевич Присяжнюк | Способ производства сырья из отходов АБС-пластика |
CN114714542B (zh) * | 2022-03-10 | 2022-11-22 | 佛山市南海瑞泰机动车报废有限公司 | 基于残渣分离的报废汽车残渣无害化处理方法 |
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2003
- 2003-03-11 JP JP2004569335A patent/JP4460460B2/ja not_active Expired - Lifetime
- 2003-03-11 AU AU2003211606A patent/AU2003211606A1/en not_active Abandoned
- 2003-03-11 WO PCT/JP2003/002880 patent/WO2004080680A1/ja active Application Filing
- 2003-03-11 CN CNB038261200A patent/CN100519122C/zh not_active Expired - Lifetime
- 2003-03-14 TW TW92105662A patent/TWI233875B/zh not_active IP Right Cessation
-
2005
- 2005-09-09 US US11/221,970 patent/US7547734B2/en active Active
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JP2001030251A (ja) * | 1999-07-19 | 2001-02-06 | Techno Polymer Kk | プラスチックリサイクルシステム |
JP2001050910A (ja) * | 1999-08-13 | 2001-02-23 | Nippon Steel Corp | 廃棄プラスチックの異物判定装置、および、廃棄プラスチック破砕装置 |
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JP2007331300A (ja) * | 2006-06-16 | 2007-12-27 | Sharp Corp | プラスチックの再資源化方法、ならびに再生プラスチック原料および再生プラスチック成形体 |
JP2008260208A (ja) * | 2007-04-12 | 2008-10-30 | Mitsubishi Electric Corp | 再生プラスチック材料選別方法 |
JP2009107126A (ja) * | 2007-10-26 | 2009-05-21 | Sharp Corp | プラスチックの再資源化方法、プラスチック原料、プラスチック成形体およびそれらの製造方法、ならびに、回収部材格納手段 |
JP2010208085A (ja) * | 2009-03-09 | 2010-09-24 | Sharp Corp | プラスチック廃材の再資源化方法、ならびに、プラスチック原料、プラスチック部材およびそれらの製造方法 |
JP2011089026A (ja) * | 2009-10-22 | 2011-05-06 | Mitsubishi Electric Corp | 再生プラスチック部品及びこの再生プラスチック部品を用いた空気調和装置、並びに再生プラスチック部品の製造方法。 |
JP2014177596A (ja) * | 2013-03-15 | 2014-09-25 | Ricoh Co Ltd | 再生樹脂組成物、成形品、画像形成装置及び再生樹脂組成物の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN100519122C (zh) | 2009-07-29 |
TW200417453A (en) | 2004-09-16 |
JP4460460B2 (ja) | 2010-05-12 |
TWI233875B (en) | 2005-06-11 |
US20060004113A1 (en) | 2006-01-05 |
JPWO2004080680A1 (ja) | 2006-06-08 |
AU2003211606A1 (en) | 2004-09-30 |
CN1750918A (zh) | 2006-03-22 |
US7547734B2 (en) | 2009-06-16 |
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