WO2005026244A1 - Process for mechanical recycling of composite polymeric material - Google Patents
Process for mechanical recycling of composite polymeric material Download PDFInfo
- Publication number
- WO2005026244A1 WO2005026244A1 PCT/SI2004/000026 SI2004000026W WO2005026244A1 WO 2005026244 A1 WO2005026244 A1 WO 2005026244A1 SI 2004000026 W SI2004000026 W SI 2004000026W WO 2005026244 A1 WO2005026244 A1 WO 2005026244A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extruder
- process according
- polymethylmetacrylate
- mass
- parts
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000004064 recycling Methods 0.000 title claims description 16
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 229920006337 unsaturated polyester resin Polymers 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 abstract description 10
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000654 additive Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 9
- 239000012815 thermoplastic material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920006037 cross link polymer Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010812 mixed waste Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 235000019577 caloric intake Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 239000010786 composite waste Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
- B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
-
- 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
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
-
- 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
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
-
- 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
- B29K2067/06—Unsaturated polyesters
-
- 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
-
- 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
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
-
- 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 invention relates to a process for mechanical recycling of waste composite polymeric material into products of various dimensions.
- the waste composite polymeric material for recycling according to the invention consist of 30-40 parts (by mass) of unsaturated polyester resin reinforced with glass fibers, 30-60 parts of partially cross-linked polymethylmetacrylate, and 0-70 parts of acrylonitrile-butadiene-styrene (ABS) copolymer.
- ABS acrylonitrile-butadiene-styrene copolymer.
- Such composite materials are generally used for producing load bearing products of larger dimensions, such as bathroom elements, playground slides, or crafts.
- the recycling of such composite materials is hampered by the constituting components being hard to separate and by the fact that unsaturated polyester resin and partially cross- linked polymethylmetacrylate are not thermoplastic materials which could be reshaped in melted form.
- waste from such composite materials is generally discarded on waste dumps.
- Known methods for recycling waste composite polymeric material are based on the thermoplastic material forming the bulk of the mixture and flowing over the remaining mixture components which act as fillers. The most widely used processes make use of extruders resistant to abrasion, while the percentage of the thermoplastic material according to manufacturers' recommendations shouldn't be less than 70%. Such method could also be employed for said composite polymeric material, in which case, however, the overall quantity of the material would increase enormously due to the additional thermoplastic material (admixed in order to constitute about 70% of the final mixture) .
- the present invention solves the technical problem of recycling mixed polymeric waste from cross-linked polymers without or with only a minimum addition of thermoplastic materials.
- the object of the invention is a process for recycling composite polymeric material with low content of thermoplasts that is technologically simple, not energetically exacting, and economical. According to the invention, the object is achieved by the process for mechanical recycling of waste composite polymeric material as set forth in the appended patent claims .
- the process of the invention is based on extrusion of milled mixed waste. Due to the nature of the material, the extruder must be provided with an Archimedean screw permitting the undisturbed flow of unmelted, softened particles of the milled material. The size of the particles and consequently the form of the Archimedean screw depends on the preliminary treatment of the material during the milling and/or sifting process.
- the extruder must be provided with external heating allowing temperatures to be achieved at which a drop in viscosity (partial melting) of the polyester, polymethylmetacrylate and/or ABS occurs.
- Extruders with a single or a double Archimedean screw may be used, with or without the capability of degassing the heated material.
- an extruder with an Archimedean screw at least 25 mm in diameter and temperatures between 180 and 230° C were employed.
- the material Prior to processing, the material must be milled to a particle size that will allow undisturbed feeding of the material into the extruder, which mainly depends on the feeding method, the inlet openings and the diameter of the Archimedean screw.
- the material In order to achieve homogeneity and a relatively smooth surface of the product, the material must be dried to a constant mass containing no humidity prior to processing.
- the ABS copolymer content may be varied arbitrarily, but this will affect the processing properties of the material. With little or no ABS molds may be cast and simple shapes extruded, whereas by increasing the percentage of ABS more complex shapes may be extruded. Passing through the extruder the mixed waste is stirred and softened by heat. The softened polyester, polymethylmetacrylate and ABS bond together the unmelted polymeric particles and glass fibers, so that a homogeneous mass, shaped into a continuous profile exits the apparatus. The shape of the profile depends on the chosen outlet nozzle, which is to say, on the purpose of the product.
- the product may also be shaped by introducing the softened material into metal moulds of various forms and sizes. Cooled products achieve strengths comparable to the strengths of chipboards. Although bigger particles of polymethylmetacrylate, polyester resin and fibers are noticeable on the surface and section, they are solidly bound together. The product does not absorb water or swell in the presence of humidity. A layer of polymethylmetacrylate, conferring a flawless external appearance to the product, may be deposited onto the surface of the product during the continuous extrusion process by means of co-extrusion.
- the invention described herein improves the process for mechanical recycling of a polymeric composite based on polymethylmetacrylate, ABS, unsaturated polyester resin and glass fibers.
- the main advantage of the described process is in that it provides economically viable mechanical recycling of great quantities of mixed polymeric waste without or with only a minimum content of thermoplastic materials, binders or other additives which could increase the processing costs and the quantity of the processed material .
- the obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 25 mm in diameter. The extrusion took place at a temperature of 220° C.
- the obtained full profile was compact, homogeneous and solid after cooling down. The interior of the profile was homogeneous and without any air bubbles. There was no thermal overheating or uncontrolled thermal breakdown of any of the components of the mixed material in the course of processing.
- the obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 60 mm in diameter. The extrusion took place at a temperature of 190° C.
- the melted mixture was then poured directly into a metal mould until full. At that point the supply was interrupted, the mould was closed and left to cool down to a temperature of approximately 50° C.
- the mould was then opened and the product extracted.
- the section of the product showed its interior to be homogeneous .
- the obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 60 mm in diameter. The extrusion took place at a temperature of 190° C.
- the obtained tube with a wall thickness of 5 to 7 mm was compact, homogeneous and solid and without any air bubbles after cooling down.
- the obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 60 mm in diameter. The extrusion took place at a temperature of 190° C. The profile was sized.
- the obtained rod with a diameter of 35 mm was compact, homogeneous and solid and without any air bubbles after cooling down.
- the process for mechanical recycling of waste composite polymeric material from partially cross- linked polymethylmetacrylate, acrylonitrile-butadiene- styrene copolymer, unsaturated polyester resin and glass fibers into products of various sizes is characterized in that prior to processing the material is milled to a convenient particle size for feeding into the extruder, and that the process takes place in an extrusion apparatus (extruder), heated to a work temperature of 180 to 230° C.
- the material consists of 30-40 parts (by mass) of unsaturated polyester resin reinforced with glass fibers, 30-60 .parts of partially crbss-linked polymethylmetacrylate, and 0-70 parts of acrylonitrile- butadiene-styrene (ABS) copolymer.
- ABS acrylonitrile- butadiene-styrene copolymer.
- the extruder allows the passage of unmelted particles of material.
- the material must be dried to a constant mass containing no humidity prior to processing.
- the mass exiting the extruder is shaped into a continuous profile of various sections, depending on the chosen outlet nozzle, which is to say, on the purpose of the product.
- a layer of polymethylmetacrylate may be deposited onto the continuous profile by means of co-extrusion.
- the mass exiting the extruder may also be shaped by introducing it into moulds of various forms and sizes.
- the process of the invention is economical in terms of energy and material, not requiring great inputs of energy or additional materials. Therefore, the invention is specific and economically effective.
- the embodiments described above are by way of illustration only and shall have no limiting effect on the scope of the invention.
Abstract
The invention relates to a process for mechanical treatment of composite material consisting of partially cross-linked polymethylmetacrylate, acrylonitrile-butadiene-styrene copolymer, unsaturated polyester resin and glass fibers by means of extrusion. Prior to processing, the material must be milled and dried. The extruder must operate at temperatures between 180 and 230° C and must allow the passage of softened and unmelted particles of material. With the process described above homogeneous products of various sizes may be produced without or with only a minimum admixing of additives to the output material.
Description
Process for Mechanical Recycling of Composite Polymeric Material
The invention relates to a process for mechanical recycling of waste composite polymeric material into products of various dimensions. The waste composite polymeric material for recycling according to the invention consist of 30-40 parts (by mass) of unsaturated polyester resin reinforced with glass fibers, 30-60 parts of partially cross-linked polymethylmetacrylate, and 0-70 parts of acrylonitrile-butadiene-styrene (ABS) copolymer. Such composite materials are generally used for producing load bearing products of larger dimensions, such as bathroom elements, playground slides, or crafts. The recycling of such composite materials is hampered by the constituting components being hard to separate and by the fact that unsaturated polyester resin and partially cross- linked polymethylmetacrylate are not thermoplastic materials which could be reshaped in melted form. Consequently, waste from such composite materials is generally discarded on waste dumps. Known methods for recycling waste composite polymeric material are based on the thermoplastic material forming the bulk of the mixture and flowing over the remaining mixture components which act as fillers. The most widely used processes make use of extruders resistant to abrasion, while the percentage of the thermoplastic material according to manufacturers' recommendations shouldn't be less than 70%. Such method could also be employed for said composite polymeric material, in which case, however, the
overall quantity of the material would increase enormously due to the additional thermoplastic material (admixed in order to constitute about 70% of the final mixture) . The present invention solves the technical problem of recycling mixed polymeric waste from cross-linked polymers without or with only a minimum addition of thermoplastic materials. Published inventions in the field of recycling of polymeric composites from cross-linked polymers are based on methods of depolymerization and reutilization of the products (WO 03/051956 Al) , on the use of solvents at elevated temperatures (WO 01723463 Al, US 2002/0017162 Al) , or on the pyrolysis process (WO 02/088277 Al) . Said methods require a high energy intake and belong to the field of the so-called chemical recycling methods wherein the polymer is mainly decomposed or treated chemically. Mechanical recycling of a composite waste consisting chiefly of polyester resin is described in patent EP 1 273 627 Al, said patent, however, relates to a material composition that differs substantially from the material described in the present invention. The object of the invention is a process for recycling composite polymeric material with low content of thermoplasts that is technologically simple, not energetically exacting, and economical. According to the invention, the object is achieved by the process for mechanical recycling of waste composite polymeric material as set forth in the appended patent claims . The process of the invention is based on extrusion of milled mixed waste. Due to the nature of the material, the extruder must be provided with an Archimedean screw permitting the undisturbed flow of unmelted, softened
particles of the milled material. The size of the particles and consequently the form of the Archimedean screw depends on the preliminary treatment of the material during the milling and/or sifting process. The extruder must be provided with external heating allowing temperatures to be achieved at which a drop in viscosity (partial melting) of the polyester, polymethylmetacrylate and/or ABS occurs. Extruders with a single or a double Archimedean screw may be used, with or without the capability of degassing the heated material. In the embodiment, an extruder with an Archimedean screw at least 25 mm in diameter and temperatures between 180 and 230° C were employed. Prior to processing, the material must be milled to a particle size that will allow undisturbed feeding of the material into the extruder, which mainly depends on the feeding method, the inlet openings and the diameter of the Archimedean screw. In order to achieve homogeneity and a relatively smooth surface of the product, the material must be dried to a constant mass containing no humidity prior to processing. The ABS copolymer content may be varied arbitrarily, but this will affect the processing properties of the material. With little or no ABS molds may be cast and simple shapes extruded, whereas by increasing the percentage of ABS more complex shapes may be extruded. Passing through the extruder the mixed waste is stirred and softened by heat. The softened polyester, polymethylmetacrylate and ABS bond together the unmelted polymeric particles and glass fibers, so that a homogeneous mass, shaped into a continuous profile exits the apparatus. The shape of the profile depends on the chosen outlet nozzle, which is to say, on the purpose of the product. The
product may also be shaped by introducing the softened material into metal moulds of various forms and sizes. Cooled products achieve strengths comparable to the strengths of chipboards. Although bigger particles of polymethylmetacrylate, polyester resin and fibers are noticeable on the surface and section, they are solidly bound together. The product does not absorb water or swell in the presence of humidity. A layer of polymethylmetacrylate, conferring a flawless external appearance to the product, may be deposited onto the surface of the product during the continuous extrusion process by means of co-extrusion. The invention described herein improves the process for mechanical recycling of a polymeric composite based on polymethylmetacrylate, ABS, unsaturated polyester resin and glass fibers. The main advantage of the described process is in that it provides economically viable mechanical recycling of great quantities of mixed polymeric waste without or with only a minimum content of thermoplastic materials, binders or other additives which could increase the processing costs and the quantity of the processed material .
First embodiment
A composite consisting of: 50 % polymethylmetacrylate, 30 % unsaturated polyester resin and 20 % glass fibers was milled to a maximum particle size of 11 mm. The obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 25 mm in diameter. The extrusion took place at a temperature of 220° C. The obtained full profile
was compact, homogeneous and solid after cooling down. The interior of the profile was homogeneous and without any air bubbles. There was no thermal overheating or uncontrolled thermal breakdown of any of the components of the mixed material in the course of processing.
Second embodiment
A composite consisting of: 50 % polymethylmetacrylate, 35 % unsaturated polyester resin and 15 % glass fibers was milled to a maximum particle size of 15 mm. The obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 60 mm in diameter. The extrusion took place at a temperature of 190° C. The melted mixture was then poured directly into a metal mould until full. At that point the supply was interrupted, the mould was closed and left to cool down to a temperature of approximately 50° C. The mould was then opened and the product extracted. The section of the product showed its interior to be homogeneous .
Third embodiment
A composite consisting of: 50 % polymethylmetacrylate, 10 % acrylonitrile-butadiene-styrene copolymer, 25 % unsaturated polyester resin and 15 % glass fibers was milled to a maximum particle size of 15 mm. The obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 60 mm in diameter. The extrusion took place at a temperature of 190° C. The obtained tube with a
wall thickness of 5 to 7 mm was compact, homogeneous and solid and without any air bubbles after cooling down.
Fourth embodiment
A composite consisting of: 33 % polymethylmetacrylate, 40 % acrylonitrile-butadiene-styrene copolymer, 17 % unsaturated polyester resin and 10 % glass fibers was milled to a maximum particle size of 15 mm. The obtained mixture was then fed to a single-screw extruder having an Archimedean screw of 60 mm in diameter. The extrusion took place at a temperature of 190° C. The profile was sized. The obtained rod with a diameter of 35 mm was compact, homogeneous and solid and without any air bubbles after cooling down.
Therefore, the process for mechanical recycling of waste composite polymeric material from partially cross- linked polymethylmetacrylate, acrylonitrile-butadiene- styrene copolymer, unsaturated polyester resin and glass fibers into products of various sizes is characterized in that prior to processing the material is milled to a convenient particle size for feeding into the extruder, and that the process takes place in an extrusion apparatus (extruder), heated to a work temperature of 180 to 230° C. The material consists of 30-40 parts (by mass) of unsaturated polyester resin reinforced with glass fibers, 30-60 .parts of partially crbss-linked polymethylmetacrylate, and 0-70 parts of acrylonitrile- butadiene-styrene (ABS) copolymer. The extruder allows the passage of unmelted particles of material. The material
must be dried to a constant mass containing no humidity prior to processing. The mass exiting the extruder is shaped into a continuous profile of various sections, depending on the chosen outlet nozzle, which is to say, on the purpose of the product. A layer of polymethylmetacrylate may be deposited onto the continuous profile by means of co-extrusion. The mass exiting the extruder may also be shaped by introducing it into moulds of various forms and sizes. The process of the invention is economical in terms of energy and material, not requiring great inputs of energy or additional materials. Therefore, the invention is specific and economically effective. The embodiments described above are by way of illustration only and shall have no limiting effect on the scope of the invention.
Claims
Patent Claims
Process for mechanical recycling of waste composite polymer material, characterized in that said material consist of 30-40 parts (by mass) of unsaturated polyester resin reinforced with glass fibers, 30-60 parts of partially cross-linked polymethylmetacrylate, and 0-70 parts of acrylonitrile-butadiene-styrene (ABS) copolymer, that prior to processing the material is milled to a convenient particle size for feeding into the extruder, and that the process takes place in an extrusion apparatus (extruder) , heated to a work temperature of 180 to 230° C.
Process according to Claim 1, characterized in that the extruder allows the passage of unmelted particles of the material.
Process according to Claim 1, characterized in that prior to processing, the material is dried to a constant mass containing no humidity.
Process according to Claim 1, characterized in that the mass exiting the extruder is shaped into a continuous profile of various sections, depending on the chosen outlet nozzle and the purpose of the product.
Process according to Claim 4, characterized in that a layer of polymethylmetacrylate is deposited onto the continuous profile by means of co-extrusion.
Process according to Claim 1, characterized in that the mass exiting the extruder is shaped by introducing it into moulds of various forms and sizes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SIP-0300232 | 2003-09-12 | ||
SI200300232A SI21606A (en) | 2003-09-12 | 2003-09-12 | Mechanical recycling procedure for composite polymeric material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005026244A1 true WO2005026244A1 (en) | 2005-03-24 |
Family
ID=34311443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SI2004/000026 WO2005026244A1 (en) | 2003-09-12 | 2004-08-18 | Process for mechanical recycling of composite polymeric material |
Country Status (2)
Country | Link |
---|---|
SI (1) | SI21606A (en) |
WO (1) | WO2005026244A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964588A1 (en) * | 2010-09-10 | 2012-03-16 | Fi Process | Method for recycling mixed plastic material waste utilized as e.g. construction material in construction field, involves cooling compact mass in water at specific temperature to obtain recycling product for recycling plastic materials |
EP4019576A1 (en) | 2020-12-28 | 2022-06-29 | Trinseo Europe GmbH | Recycling method for elastomer toughened thermoplastic polymers |
WO2023108245A1 (en) * | 2021-12-17 | 2023-06-22 | Indústria E Comércio De Confecções Bella Moda Ltda. | Method for re-using synthetic textile waste to produce continuous yarn |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5122398A (en) * | 1989-10-31 | 1992-06-16 | Basf Aktiengesellschaft | Recyclable bumper system |
US5876644A (en) * | 1996-08-27 | 1999-03-02 | Wellman, Inc. | Food quality polyester recycling |
EP0943728A1 (en) * | 1998-03-16 | 1999-09-22 | Collins & Aikman Floorcoverings, Inc. | A process of recycling waste polymeric material and an article utilizing the same |
-
2003
- 2003-09-12 SI SI200300232A patent/SI21606A/en not_active IP Right Cessation
-
2004
- 2004-08-18 WO PCT/SI2004/000026 patent/WO2005026244A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5122398A (en) * | 1989-10-31 | 1992-06-16 | Basf Aktiengesellschaft | Recyclable bumper system |
US5876644A (en) * | 1996-08-27 | 1999-03-02 | Wellman, Inc. | Food quality polyester recycling |
EP0943728A1 (en) * | 1998-03-16 | 1999-09-22 | Collins & Aikman Floorcoverings, Inc. | A process of recycling waste polymeric material and an article utilizing the same |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964588A1 (en) * | 2010-09-10 | 2012-03-16 | Fi Process | Method for recycling mixed plastic material waste utilized as e.g. construction material in construction field, involves cooling compact mass in water at specific temperature to obtain recycling product for recycling plastic materials |
EP4019576A1 (en) | 2020-12-28 | 2022-06-29 | Trinseo Europe GmbH | Recycling method for elastomer toughened thermoplastic polymers |
WO2022144158A1 (en) | 2020-12-28 | 2022-07-07 | Trinseo Europe Gmbh | Recycling method for elastomer toughened thermoplastic polymers |
WO2023108245A1 (en) * | 2021-12-17 | 2023-06-22 | Indústria E Comércio De Confecções Bella Moda Ltda. | Method for re-using synthetic textile waste to produce continuous yarn |
Also Published As
Publication number | Publication date |
---|---|
SI21606A (en) | 2005-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7994241B2 (en) | Wood composite alloy composition having a compatibilizer that improves the ability to process and compress cellulosic fiber | |
US20120119414A1 (en) | Process for manufacturing a shaped article from a composite material comprising a solid filler and a thermoplastic binder | |
CN106967250B (en) | Composition of long fiber reinforced thermoplastic molding material and use method thereof | |
WO2021058677A1 (en) | Manufacturing method for structural components and structural component | |
JP2001131331A (en) | Reclaiming process for crosslinked polyethylene resin | |
WO2005026244A1 (en) | Process for mechanical recycling of composite polymeric material | |
GB2567141A (en) | Moulding method | |
JP6914541B2 (en) | Molding machine for thermoplastic resin composition and manufacturing method | |
KR0139884B1 (en) | Waste-crosslink-polyethylene resin composition | |
JP2002113768A (en) | Method and apparatus for extrusion-molding molding of thermoplastic composite material | |
AU2019232925A1 (en) | Apparatus and method for producing thermoplastic elastomer, elastomers produced thereby and articles produced from the elastomers | |
JP4125942B2 (en) | Mixed material using plastic waste, manufacturing apparatus thereof, and manufacturing method thereof | |
CN111138801A (en) | ABS composite material, application and preparation method thereof | |
JPH09141656A (en) | Synthetic wood powder made of raw material of waste polyester fiber and manufacture thereof, and synthetic wood molding using the powder and manufacture thereof | |
WO2004041495A1 (en) | Low shear pelletization method and apparatus therefor | |
AU2019205991B1 (en) | The twin-screw extrusion of long carbon fibre reinforced polylactic acid filaments for 3D printing | |
TW202102585A (en) | Composite plastic alloy manufacturing process method for producing a composite plastic alloy material blended with polyethylene and polyethylene terephthalate for manufacturing various daily necessities | |
NL2013695C2 (en) | Fibre reinforced composite materials. | |
CA3128311A1 (en) | Apparatus and method for producing thermoplastic elastomer, elastomers produced thereby and articles produced from the elastomers | |
EP0712423A1 (en) | Process for reclaiming crosslinked acrylic scrap | |
JP6782927B2 (en) | Manufacturing method of composite resin material | |
JP2023546261A (en) | Method and single screw extrusion system for long fiber thermoplastic material processing | |
JPH081670A (en) | Recycling of fiber reinforced thermoplastic resin molded object | |
CN115418086A (en) | Preparation method and equipment of novel ultralow dielectric resin material | |
Sakai et al. | Process for Improvement in Toughness of Unsaturated Polyester with Elastomer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MK MN MW MX MZ NA NI NO NZ PG PH PL PT RO RU SC SD SE SG SK SY TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SZ TZ UG ZM ZW AM AZ BY KG MD RU TJ TM AT BE BG CH CY DE DK EE ES FI FR GB GR HU IE IT MC NL PL PT RO SE SI SK TR BF CF CG CI CM GA GN GQ GW ML MR SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase |