CN110408230A - A method of processing plastic pallet is squeezed out using waste and old fibre and waste plastic mixing - Google Patents

A method of processing plastic pallet is squeezed out using waste and old fibre and waste plastic mixing Download PDF

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Publication number
CN110408230A
CN110408230A CN201910797876.6A CN201910797876A CN110408230A CN 110408230 A CN110408230 A CN 110408230A CN 201910797876 A CN201910797876 A CN 201910797876A CN 110408230 A CN110408230 A CN 110408230A
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parts
waste
plastic
pallet
old
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CN201910797876.6A
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Chinese (zh)
Inventor
李云全
颜录科
朱道峰
李书润
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李云全
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Priority to CN201910797876.6A priority Critical patent/CN110408230A/en
Publication of CN110408230A publication Critical patent/CN110408230A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00Compositions of unspecified macromolecular compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/507Polyesters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/04Thermoplastic elastomer
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/20Recycled plastic

Abstract

The present invention provides a kind of methods for squeezing out processing plastic pallet using waste and old fibre and waste plastic mixing.The present invention is useless fiber, waste plastics, toughener, compatilizer and auxiliary agent etc., it is proportionally added to mixing in mixer, profile is extruded into using extruder after plasticizing completely, is cut into specific length, plastic pallet is made using sweat soldering, instead of present wood pallets or injection molding PE pallet.The pallet is that the plastic strip of extrusion is formed, and intensity is high, it is important to which it is simple, convenient to recycle.Pallet of the present invention, has the high rigidity of wood pallets, also has the toughness of injection molding pallet, it is important to which price is extremely low.Harm of the very good solution waste plastic to environment, saves resource, meets resource solution and environmental protection project.

Description

A method of processing plastic pallet is squeezed out using waste and old fibre and waste plastic mixing
Technical field
The present invention relates to a kind of waste reclamation methods, squeeze out and add in particular with waste and old fibre and waste plastic mixing The method of work plastic pallet.
Background technique
Currently marketed pallet is mainly wood pallets and injection molding pallet, and wood pallets intensity is not high, and wastes a large amount of timber, Not environmentally.It is molded PE pallet, toughness is preferable, insufficient to rigidity.Key injection molding pallet cost of material close to ten thousand yuan, cause pallet at This is higher.
Useless fiber source is very extensive, mainly includes the fiber of the recycling such as waste and old clothes, waste and old artificial leather, because this waste and old Fibre composition is sufficiently complex, and organic matter PP non-woven fabrics fiber, PET fiber, natural cotton fibriia also have various inorfils.This A little fibers mix, and seriously constrain recycling and reusing.
Waste plastic is exactly the plastics of common recycling, mainly includes PP, PE, PS, ABS, PC etc..The present invention mainly uses PP or PE is recycled, because both material sources are very extensive, price is very low.
The present invention is useless fiber, waste plastics, toughener POE (not only can with toughening but also can be compatible) or TPE, lubricant Paraffin and antioxidant etc. are proportionally added to mixing in mixer, are extruded into profile using extruder after plasticizing completely, usually 50mm -200mm width, thickness 10mm or so.Be cut into specific length, order and dress up plastic pallet, instead of present wood pallets or Person is molded PE pallet.
The material that the pallet uses is very cheap, and waste and old fibre is hardly charged, and accounting is up to 70%;Waste plastic can be with It is waste PP or PE, is also possible to PP and PE mixed plastic, price is very low, usually per ton not exceed 4000 yuan.Toughening Agent POE or TPE, can be recycling elastomer, virgin material also can be used, total accounting usually not more than 5%, overall processing can With control.
The pallet is that the plastic strip of extrusion is formed using sweat soldering, and intensity is high, it is important to which it is simple, convenient to recycle.
The pallet has the toughness of plastic pallet, and but also with the rigidity of wood pallets, intensity is considerably beyond wood pallets.It closes Key is the pallet price far below wood pallets or injection molding pallet.
Summary of the invention
The present invention provides a kind of methods for squeezing out processing plastic pallet using waste and old fibre and waste plastic mixing.This hair Bright is that useless fiber, waste plastics, toughener and auxiliary agent etc. are proportionally added to mixing in mixer, is used after plasticizing completely Extruder is squeezed out to die for molding material, is cut into specific length, and plastic pallet is made using sweat soldering, instead of present wooden Pallet or injection molding PE pallet.The pallet is that the plastic strip of extrusion is formed, and intensity is high, it is important to which it is simple, convenient to recycle.This hair Bright pallet, has the high rigidity of wood pallets, also has the toughness of injection molding pallet, it is important to which price is extremely low.Very good solution is useless Harm of the old plastics to environment, saves resource, meets resource solution and environmental protection project.
Specific scheme is as follows:
A method of processing plastic pallet being squeezed out using waste and old fibre and waste plastic mixing, by waste and old fibre, waste and old Plastics, toughener, compatilizer and auxiliary agent are proportionally added to mixing in mixer, are squeezed out after plasticizing using extruder completely To die for molding material, it is cut into specific length, plastic pallet is made using sweat soldering.
Further, the waste plastic is selected from PP or PE.
Further, the toughener is selected from POE or TPE;The compatilizer is selected from maleic anhydride;The auxiliary agent is selected from profit Lubrication prescription paraffin and antioxidant.
Further, according to weight ratio, waste and old fibre is 60-70 parts;Waste plastic is 30-40 parts, and toughener is 1-10 Part, compatilizer is 2-4 parts, 1-2 parts and antioxidant 1-2 parts of paraffin.
Further, according to weight ratio, waste and old fibre is 65 parts;Waste plastic is 35 parts, and toughener is 5 parts, compatilizer It is 3 parts, 1 part and 1 part of antioxidant of paraffin.
Further, the time of mixing is 15-30 minutes in the mixer, and extruder entrance to outlet is divided into five Duan Wen Degree section, respectively 60-80 DEG C, 100-150 DEG C, 150-180 DEG C, 180-220 DEG C, 220-230 DEG C, the die for molding material Temperature is 60-120 DEG C.
Further, the waste and old fibre is obtained by steps of processing: waste and old clothing being broken into fritter, after being crushed It is washed with cleaning agent, the cleaning agent is by 20-25 parts of 12-16 parts of sodium acetate, sodium hypochlorite by weight, isopropanol 4- 6 parts, 6-8 parts of ethyl alcohol and 80-85 parts of deionized water compositions, removing cleaning agent is washed with deionized later, is then immersed in concentration Fiber treatment is carried out out in the NaOH solution of 4-6mol/L, to be heated to 65-70 DEG C, then uses the peroxide of mass concentration 5-8% Change hydrogen solution carry out discoloration processing, drying, then the fiber of discoloration is added in maceration extract, heated at 180-220 DEG C into The reaction of row fat polymerization, punching obtains fibrous material particle after hardening, and the maceration extract is by styrene monomer by weight 20-30 parts, 20-30 parts of methyl methacrylate monomer, 20-25 parts of terephthalic acid (TPA), 4-5 parts of ethanedioic acid, ethylene glycol 30-40 Part and 1-2 parts of di-isopropyl peroxydicarbonate compositions.
The invention has the following beneficial effects:
1, the material that pallet of the invention uses is very cheap, and waste and old fibre is hardly charged;Waste plastic can be useless Old PP or PE is also possible to PP and PE mixed plastic, and price is very low, usually per ton not exceed 4000 yuan.Toughener POE Or TPE, it can be recycling elastomer, virgin material also can be used, overall processing can control.
2, pallet of the invention is that the plastic strip of extrusion is formed using sweat soldering, and intensity is high, and is recycled simply, just It is prompt.
3, pallet of the invention has the toughness of plastic pallet, and but also with the rigidity of wood pallets, intensity is considerably beyond wood Matter pallet.Key is pallet price of the invention far below wood pallets or injection molding pallet.
4, plastics and fiber mixing, it is difficult to reach homogenization.The present invention be using mixer mix, in this way guarantee plastics with Fiber is sufficiently mixed, and toughener is added and improves toughness of material, and phase solvent, which is added, makes its uniformly further compatible dispersion.
5, recycled fiber and plastics mixing, maximum problem is that material property is lower, for example intensity is not high, and recycled fiber is held Easily broken, the Compound Degree of recycled fiber and plastics is lower, and the present invention is first existed clothing by pre-processing to recycled fiber It is cleaned in the specific washing lotion of the present invention, and with lye fibrosis, the Single Fiber of pure dispersion is obtained, then in maceration extract Dipping, is formed in situ copolyesters after reacting with binary raw polyol through fat polymerization by binary acid, with fibre compact on fiber Bonding, improves the intensity and wear-resisting property of fiber, and styrene monomer and methyl methacrylate monomer are in thermal initiator In the presence of fiber surface polymerize, polymer have specific functional groups, can be improved the compatibility between copolyesters and fiber, into One step improves fibre strength, further, it is possible to improve the compatibility between fiber and recycled plastic, improves Compound Degree.
Detailed description of the invention
Fig. 1 is process flow chart of the invention
Specific embodiment
The present invention will be described in more detail below by specific embodiment, but protection scope of the present invention not by It is limited to these embodiments.
Embodiment 1
One, fibrous material is prepared:
1) waste and old clothing is broken into the fritter of side length 2cm;
2) it is washed after being crushed with cleaning agent, the cleaning agent is by 12 parts of sodium acetate, sodium hypochlorite 20 by weight Part, 4 parts of isopropanol, 6 parts of ethyl alcohol and 80 parts of deionized water compositions;
3) removing cleaning agent is washed with deionized;
4) it immerses in the NaOH solution that concentration is 4mol/L, is heated to 65 DEG C and carries out out fiber treatment 3h;
5) discoloration processing 2h, drying are carried out with the hydrogenperoxide steam generator of mass concentration 5%;
6) fiber of discoloration is added in maceration extract, heating carries out fat polymerization reaction at 180 DEG C, is punched after hardening Fibrous material particle is obtained, the maceration extract is by 20 parts of styrene monomer by weight, methyl methacrylate monomer 20 Part, 20 parts of terephthalic acid (TPA), 4 parts of ethanedioic acid, 30 parts of ethylene glycol and 1 part of di-isopropyl peroxydicarbonate composition;
Two, composite plastic is prepared:
1) by fiber grain, waste plastic PP, toughener POE, compatilizer maleic anhydride, paraffin and antioxidant BHT, according to According to weight ratio, fiber grain is 60 parts;Waste plastic PP is 30 parts, and toughener POE is 1 part, and compatilizer maleic anhydride is 2 Part, paraffin is 1 part and antioxidant BHT is 1 part and is added to mixing 15 minutes in mixer, is plasticized completely;
2) it is squeezed out using extruder to die for molding material, extruder entrance to outlet is divided into five sections of temperature sections, respectively 60 DEG C, 100 DEG C, 150 DEG C, 180 DEG C, 220 DEG C, the temperature of the die for molding material are 60 DEG C;
3) it is cut into specific length (generally long 20cm, width and thickness are the rectangular item of 0.5cm), using sweat soldering system At plastic pallet.
Embodiment 2
One, fibrous material is prepared:
1) waste and old clothing is broken into the fritter of side length 2cm;
2) it is washed after being crushed with cleaning agent, the cleaning agent is by 16 parts of sodium acetate, sodium hypochlorite 25 by weight Part, 6 parts of isopropanol, 8 parts of ethyl alcohol and 85 parts of deionized water compositions;
3) removing cleaning agent is washed with deionized;
4) it immerses in the NaOH solution that concentration is 6mol/L, is heated to 70 DEG C and carries out out fiber treatment 3h;
5) discoloration processing 2h, drying are carried out with the hydrogenperoxide steam generator of mass concentration 8%;
6) fiber of discoloration is added in maceration extract, heating carries out fat polymerization reaction at 220 DEG C, is punched after hardening Fibrous material particle is obtained, the maceration extract is by 30 parts of styrene monomer by weight, methyl methacrylate monomer 30 Part, 25 parts of terephthalic acid (TPA), 5 parts of ethanedioic acid, 40 parts of ethylene glycol and 2 parts of di-isopropyl peroxydicarbonate compositions;
Two, composite plastic is prepared:
1) by fiber grain, waste plastic PE, toughener TPE, compatilizer maleic anhydride, paraffin and antioxidant BHT, according to According to weight ratio, fiber grain is 70 parts;Waste plastic PE is 40 parts, and toughener TPE is 10 parts, and compatilizer maleic anhydride is 4 Part, paraffin is 2 parts and antioxidant BHT is 2 parts and is added in mixer mixing 15-30 minutes, is plasticized completely;
2) it is squeezed out using extruder to die for molding material, extruder entrance to outlet is divided into five sections of temperature sections, respectively 80 DEG C, 150 DEG C, 180 DEG C, 220 DEG C, 230 DEG C, the temperature of the die for molding material are 120 DEG C;
3) it is cut into specific length (generally long 20cm, width and thickness are the rectangular item of 0.5cm), using sweat soldering system At plastic pallet.
Embodiment 3
One, fiber particle material is prepared:
1) waste and old clothing is broken into the fritter of side length 2cm;
2) it is washed after being crushed with cleaning agent, the cleaning agent is by 14 parts of sodium acetate, sodium hypochlorite 22 by weight Part, 5 parts of isopropanol, 7 parts of ethyl alcohol and 82 parts of deionized water compositions;
3) removing cleaning agent is washed with deionized;
4) it immerses in the NaOH solution that concentration is 5mol/L, is heated to 65 DEG C and carries out out fiber treatment 3h;
5) discoloration processing 2h, drying are carried out with the hydrogenperoxide steam generator of mass concentration 6%;
6) fiber of discoloration is added in maceration extract, heating carries out fat polymerization reaction at 200 DEG C, is punched after hardening Fibrous material particle is obtained, the maceration extract is by 25 parts of styrene monomer by weight, methyl methacrylate monomer 25 Part, 22 parts of terephthalic acid (TPA), 4 parts of ethanedioic acid, 35 parts of ethylene glycol and 2 parts of di-isopropyl peroxydicarbonate compositions;
Two, composite plastic is prepared:
1) by fiber grain, waste plastic PP and PE, toughener POE and TPE, compatilizer maleic anhydride, paraffin and antioxygen Agent BHT, according to according to weight ratio, fiber grain is 65 parts;PP20 parts of waste plastic and PE are 15 parts, POE3 part of toughener with TPE is 2 parts, and compatilizer maleic anhydride is 3 parts, and paraffin is 1 part and antioxidant BHT is 1 part and is added to mixing 20 in mixer and divides Clock is plasticized completely;
2) it is squeezed out using extruder to die for molding material, extruder entrance to outlet is divided into five sections of temperature sections, respectively 70 DEG C, 120 DEG C, 160 DEG C, 200 DEG C, 220 DEG C, the temperature of the die for molding material are 90 DEG C;
3) it is cut into specific length (generally long 20cm, width and thickness are the rectangular item of 0.5cm), using sweat soldering system At plastic pallet.
Test and result
The composite plastic that Example 1-3 is obtained, is cut into long 20cm, and width and thickness is the rectangular item of 0.5cm, test Mechanical property, by following table as it can be seen that composite plastic product prepared by the salvage material of embodiment 1-3, equal in every mechanical index Performance is very excellent, and is substantially better than the mechanical property of the material of plastic pallet on the market and wood pallets.
Table 1
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it would be recognized that above-mentioned Description be not considered as limitation of the present invention.

Claims (7)

1. a kind of method for squeezing out processing plastic pallet using waste and old fibre and waste plastic mixing, by waste and old fibre, waste and old modeling Material, toughener, compatilizer and auxiliary agent are proportionally added to mixing in mixer, completely plasticizing after using extruder squeeze out to Die for molding material, is cut into specific length, and plastic pallet is made using sweat soldering.
2. the method as described in claim 1, the waste plastic is selected from PP or PE.
3. the toughener is selected from POE or TPE such as the claims described in any item methods;The compatilizer is selected from horse Carry out acid anhydrides;The auxiliary agent is selected from paraffin wax and antioxidant.
4., according to weight ratio, waste and old fibre is 60-70 parts such as the described in any item methods of the claims;Waste plastic is 30-40 parts, toughener is 1-10 parts, and compatilizer is 2-4 parts, 1-2 parts and antioxidant 1-2 parts of paraffin.
5., according to weight ratio, waste and old fibre is 65 parts such as the described in any item methods of the claims;Waste plastic is 35 Part, toughener is 5 parts, and compatilizer is 3 parts, 1 part and 1 part of antioxidant of paraffin.
6. the time of mixing is 15-30 minutes in the mixer, extruder such as the claims described in any item methods Entrance to outlet is divided into five sections of temperature sections, respectively 60-80 DEG C, 100-150 DEG C, 150-180 DEG C, 180-220 DEG C, 220-230 DEG C, the temperature of the die for molding material is 60-120 DEG C.
7. the method as described in claim 1, the waste and old fibre is obtained by steps of processing: waste and old clothing is broken into Fritter is washed after broken with cleaning agent, and the cleaning agent is by 12-16 parts of sodium acetate, sodium hypochlorite 20-25 by weight Part, removing cleaning agent is washed with deionized, so in 4-6 parts of isopropanol, 6-8 parts of ethyl alcohol and 80-85 parts of deionized water compositions later It is immersed in the NaOH solution that concentration is 4-6mol/L afterwards, is heated to 65-70 DEG C and carries out out fiber treatment, then use mass concentration 5- 8% hydrogenperoxide steam generator carries out discoloration processing, then the fiber of discoloration is added in maceration extract, at 180-220 DEG C by drying Lower heating carries out fat polymerization reaction, and punching obtains fibrous material particle after hardening, and the maceration extract is by benzene by weight 20-30 parts of vinyl monomer, 20-30 parts of methyl methacrylate monomer, 20-25 parts of terephthalic acid (TPA), 4-5 parts of ethanedioic acid, second two 30-40 parts of alcohol and 1-2 parts of di-isopropyl peroxydicarbonate compositions.
CN201910797876.6A 2019-08-27 2019-08-27 A method of processing plastic pallet is squeezed out using waste and old fibre and waste plastic mixing Pending CN110408230A (en)

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Publication number Priority date Publication date Assignee Title
CN1161900A (en) * 1996-12-27 1997-10-15 北京化工大学 Method for making plastic by recovering waste fiber from rubber regeneration
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CN101139453A (en) * 2007-08-23 2008-03-12 钟林 Circulating mix-smelting plastic-wood composite material, production method and freight pallet manufactured by the same
CN102321348A (en) * 2011-07-13 2012-01-18 福建师范大学 Method for preparing plastic tray from three-layer composite film recycled material
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CN102952317A (en) * 2012-10-19 2013-03-06 芜湖太平洋塑胶有限公司 Plastic-wooden composite tray and preparation method thereof
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Publication number Priority date Publication date Assignee Title
CN1161900A (en) * 1996-12-27 1997-10-15 北京化工大学 Method for making plastic by recovering waste fiber from rubber regeneration
CN1313231A (en) * 2000-03-09 2001-09-19 李平 Composite pallet
CN101139453A (en) * 2007-08-23 2008-03-12 钟林 Circulating mix-smelting plastic-wood composite material, production method and freight pallet manufactured by the same
CN102321348A (en) * 2011-07-13 2012-01-18 福建师范大学 Method for preparing plastic tray from three-layer composite film recycled material
CN202464311U (en) * 2012-01-20 2012-10-03 安徽奇爱塑木新材料科技有限公司 Wood-plastic tray
CN102952317A (en) * 2012-10-19 2013-03-06 芜湖太平洋塑胶有限公司 Plastic-wooden composite tray and preparation method thereof
CN103772819A (en) * 2014-01-21 2014-05-07 江苏力达塑料托盘制造有限公司 Method for preparing polypropylene and rice hull powder foamed composite tray
CN104177794A (en) * 2014-09-17 2014-12-03 周东明 Tray and preparation method thereof

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唐见茂: "《绿色复合材料》", 31 December 2016, 中国铁道出版社 *
陈占勋: "《废旧高分子材料资源及综合利用》", 31 March 1997, 化学工业出版社 *

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