CN113400515A - Recycling treatment method of waste plastic garbage and application thereof - Google Patents
Recycling treatment method of waste plastic garbage and application thereof Download PDFInfo
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- CN113400515A CN113400515A CN202110790291.9A CN202110790291A CN113400515A CN 113400515 A CN113400515 A CN 113400515A CN 202110790291 A CN202110790291 A CN 202110790291A CN 113400515 A CN113400515 A CN 113400515A
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- 239000004033 plastic Substances 0.000 title claims abstract description 113
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004064 recycling Methods 0.000 title claims abstract description 23
- 239000002699 waste material Substances 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 55
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000004048 modification Effects 0.000 claims abstract description 7
- 238000012986 modification Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 40
- 239000000843 powder Substances 0.000 claims description 23
- 239000002023 wood Substances 0.000 claims description 21
- 239000007769 metal material Substances 0.000 claims description 19
- 239000000047 product Substances 0.000 claims description 17
- 239000004698 Polyethylene Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 12
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 12
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 12
- 239000002985 plastic film Substances 0.000 claims description 11
- 229920006255 plastic film Polymers 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 6
- 239000010812 mixed waste Substances 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 238000009270 solid waste treatment Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
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- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- -1 compatilizer Substances 0.000 description 4
- 239000012744 reinforcing agent Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
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- 235000019814 powdered cellulose Nutrition 0.000 description 2
- 229920003124 powdered cellulose Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 238000005336 cracking Methods 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Images
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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a recycling treatment method of waste plastic garbage, which mainly aims at recycling treatment and utilization of the waste material of the recycled garbage generated after the increasing recycling treatment of the waste plastic, adopts certain principles and methods for integrating solid waste treatment, increases certain necessary process links, carries out formula modification on a classified recycling treatment process, meets the market requirements and modified raw materials of various plastic raw materials, and can be successfully applied to products of plastic composite new materials and recycled plastic products.
Description
Technical Field
The invention relates to the technical field of resource regeneration, in particular to a recycling treatment method of waste plastic garbage and application thereof.
Background
The method adheres to the basic national policy of saving resources and protecting the environment, follows the principle of 'reduction, reutilization and resource', focuses on building a resource circulation type industrial system, quickens the construction of a waste material recycling system, deepens the agricultural cyclic economic development, comprehensively improves the resource utilization efficiency, promotes the utilization level of regenerated resources, establishes a healthy green low-carbon cyclic development economic system, and provides resource guarantee for the sustainable development of the economic society.
At present, the development of national recycling economy still faces the outstanding problems of low resource output efficiency of key industries, low standardized level of recycling of renewable resources, lack of ground guarantee for recycling facilities, difficult recycling of low-value recyclable materials, high strength of large solid wastes, insufficient utilization, low added value of comprehensively utilized products and the like.
Both from the global green development trend and the requirement on climate change and from the domestic resource demand and utilization level, China must vigorously develop circular economy, focus on solving the outstanding contradiction and problem, realize the high-efficient utilization and the cyclic utilization of resources, and promote the high-quality development of the economy and the society.
Currently, the treatment of solid waste in the aspect of environmental protection is very important, and the recycling of waste plastics is also an important content. In the process of recycling, a large amount of plastic garbage is inevitably generated, and due to nondegradable property, various sundries such as plastics, metal, soil, stones and the like are mixed into a whole, so that the garbage is difficult to treat, becomes new solid garbage and causes new environmental pollution.
Disclosure of Invention
The invention aims to provide a recycling treatment method of waste plastic garbage, which can fully recycle the waste plastic garbage and reduce environmental pollution.
In order to achieve the purpose, the invention provides the following technical scheme:
a recycling treatment method of waste plastic garbage comprises the following steps:
s1, cleaning the waste plastic garbage, and mainly removing soil and gravel impurities in the plastic garbage by using cleaning equipment to obtain a cleaner primary plastic mixture;
the primary plastic mixture is various in types, including plastic film materials, sheet materials, thick block materials and metal materials;
s2, classifying and separating the primary plastic mixture:
separating the plastic film materials, drying the primary plastic mixture by using drying equipment, conveying the primary plastic mixture into a winnowing machine by using conveying equipment, and cleaning the plastic film materials by using the winnowing machine to obtain a secondary plastic mixture;
separating metal materials, namely separating the metal materials in the secondary plastic mixture according to the gravity principle, wherein the separated metal materials can be sold to the outside, and the metal materials are separated to obtain a tertiary plastic mixture;
and S3, classifying the plastic varieties of the three-stage plastic mixture, and separating and collecting various PP, PVC, PE, PA, PS, ABS, crosslinked polyethylene, rubber and the like which are mixed together in a classified manner to recover or obtain mixed waste in a certain proportion.
In the step S3, plastics are classified by electromagnetic and electrostatic eddy current technology, and various mixed PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene, rubber, etc. are separated and collected to be recycled or mixed waste materials are obtained in a certain proportion.
The recycled PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene, rubber and the like are modified, and an auxiliary agent is added according to actual needs to change the performance of the recycled PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene, rubber and the like, so that the recycled plastic recycled raw materials are obtained according to the use technical requirements.
The modification processing is to use high-temperature heating equipment to modify the plastic materials and then use a forming machine to process the plastic materials into modified plastic raw materials or plastic finished products and plastic semi-finished products.
An application of plastic garbage in the production of new plastic-wood material and other products is disclosed.
1. Generally, the raw materials for processing the plastic-wood section are 25 to 30 percent of plastic particles, about 70 percent of wood powder and 8 to 10 percent of various auxiliary additives, and the plastic-wood section is processed and produced by an extrusion molding machine.
The invention adds the ground mixed garbage material according to the proportion, and replaces 100 percent of plastic particles and 40 to 60 percent of wood powder. The actual mixture ratio is that the grinding powder is about 40 percent, the wood powder is about 50 percent, and various auxiliary material additives such as compatilizer, antioxidant, lubricant, toner and the like account for 5 to 10 percent, and the plastic-wood section bar product which meets the standard requirements in each index and is suitable for the market is produced through the mixture ratio of the raw materials and the auxiliary materials.
2. In the production of other materials, such as various pressed parts, containers, plates and the like, because the mixed garbage powder contains the reinforcing agent such as calcium powder and the like, the reinforcing material such as calcium carbonate and the like is not required to be added in the processing process, the plastic raw material and the reinforcing agent raw material can be saved, and the substitution rate reaches 100 percent.
In the process of disposing and recycling the waste plastic garbage, the classified and recycled usable recycled plastic varieties account for 70-80%, and the rest 20-30% of other impurities of the plastic shell cannot be subdivided and recycled. Therefore, the invention is mainly characterized in that the mixed garbage is recycled, the mixed garbage is basically utilized by 100 percent, and the invention can be successfully applied to some plastic mixed products and even new material products, and the specific application method is as follows:
1. further crushing the mixed waste into crushable materials with the particle diameter less than about 3 mm;
2. pulverizing the pulverized particles to about 80 mesh, wherein the powder contains about 70% of plastics, and the rest 30% is ash material, non-fusible material, and fiber material, such as calcium carbonate powder, pulvis Talci, powdered cellulose, and thermosetting resin;
3. the powdery material replaces reinforcing filling agents such as plastic raw materials, wood powder, calcium powder and the like, and is respectively used for outdoor decorative materials such as plastic-wood sectional material products, artificial boards, garbage cans, various containers, greening flowerpots and the like, fan bases, machine table working cushions, chairs, stools and panels and other plastic products.
Compared with the prior art, the invention has the beneficial effects that:
the scheme of the invention mainly aims at the treatment of the increasingly regenerated garbage generated after the waste plastic treatment, adopts some principles and methods for integrating solid waste treatment, increases some necessary process links, carries out formula modification on a classified recovery treatment process, and meets the market requirements and modified raw materials of various plastic raw materials.
The invention is mainly divided into two parts, one is to separate and recycle in a physical treatment way to obtain purer plastic mixture for classification; secondly, various toughening and strengthening chemical solvents are added after classification, and the modified plastic raw materials are recycled according to the required use requirements.
Drawings
FIG. 1 is a flow diagram of the recovery process of the present invention;
FIG. 2 is a flow diagram of a modification process of the present invention;
FIG. 3 is a flow chart of the milling utilization of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The waste plastic garbage selected by the invention comprises the following main components:
example 1
A recycling treatment method of waste plastic garbage comprises the following steps:
s1, cleaning the waste plastic garbage, and mainly removing soil and gravel impurities in the plastic garbage by using cleaning equipment to obtain a cleaner primary plastic mixture;
the primary plastic mixture is various in types, including plastic film materials, sheet materials, thick block materials and metal materials;
s2, classifying and separating the primary plastic mixture:
separating the plastic film materials, drying the primary plastic mixture by using drying equipment, conveying the primary plastic mixture into a winnowing machine by using conveying equipment, and cleaning the plastic film materials by using the winnowing machine to obtain a secondary plastic mixture;
separating metal materials, namely separating the metal materials in the secondary plastic mixture according to the gravity principle, wherein the separated metal materials can be sold to the outside, and the metal materials are separated to obtain a tertiary plastic mixture;
and S3, classifying the plastic varieties of the three-stage plastic mixture, and separating and collecting various PP, PVC, PE, PA, PS, ABS, crosslinked polyethylene, rubber and the like which are mixed together in a classified manner to recover the plastic.
In the step S3, plastics are classified by electromagnetic and electrostatic eddy current technology, and various mixed PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene, rubber, etc. are separated and collected for recycling.
The recycled PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene or rubber and the like are modified, and an auxiliary agent is added according to actual needs to change the performance of the recycled PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene or rubber and the like, so that the recycled plastic recycled raw material is obtained according to the use technical requirements.
The modification processing is to use high-temperature heating equipment to modify the plastic materials and then use a forming machine to process the plastic materials into modified plastic raw materials or plastic finished products and plastic semi-finished products.
Example 2
A recycling treatment method of waste plastic garbage comprises the following steps:
s1, cleaning the waste plastic garbage, and mainly removing soil and gravel impurities in the plastic garbage by using cleaning equipment to obtain a cleaner primary plastic mixture;
the primary plastic mixture is various in types, including plastic film materials, sheet materials, thick block materials and metal materials;
s2, classifying and separating the primary plastic mixture:
separating the plastic film materials, drying the primary plastic mixture by using drying equipment, conveying the primary plastic mixture into a winnowing machine by using conveying equipment, and cleaning the plastic film materials by using the winnowing machine to obtain a secondary plastic mixture;
separating metal materials, namely separating the metal materials in the secondary plastic mixture according to the gravity principle, wherein the separated metal materials can be sold to the outside, and the metal materials are separated to obtain a tertiary plastic mixture;
s3, further crushing the three-stage plastic mixture into crushable materials with the particle diameter smaller than about 3 mm;
s4, grinding the crushed particles to about 80 meshes, wherein the powder contains about 70% of plastics, and the rest 30% of the powder contains various ash materials, non-melting materials and fiber materials, such as calcium carbonate powder, talcum powder, powdered cellulose, thermosetting resin and the like;
s5, the powdery material replaces reinforcing filling agents such as plastic raw materials, wood powder, calcium powder and the like, and is respectively used for outdoor decorative materials such as plastic-wood sectional material products, artificial boards, garbage cans, various containers, greening flowerpots and the like, and plastic products such as fan bases, machine table working cushions, chairs, stools and panels.
For example, in the application of plastic-wood products, the plastic-wood section is usually produced by using 25% -30% of plastic particles, about 70% of wood powder and 8% -10% of various auxiliary additives through processing by an extrusion molding machine.
The ground mixed garbage material is added according to the proportion to replace 100 percent of plastic particles and 40 to 60 percent of wood powder. The actual mixture ratio is that the grinding powder is about 40 percent, the wood powder is about 50 percent, and various auxiliary material additives such as compatilizer, antioxidant, lubricant, toner and the like account for 8 to 10 percent, and the plastic-wood section bar product which meets the standard requirements in each index and is suitable for the market is produced through the mixture ratio of the raw materials and the auxiliary materials.
The specific indexes are as follows: the impact toughness is more than or equal to 24KJ/m2(ii) a The bending strength is more than or equal to 25 MPa; a bending failure load is 3300N or more; the unmelted melt on the surface is not more than 1 mm, all lines are uniform and clear, and the phenomena of bulging, cracking and breakage are avoided; all the dimensional tolerances, the warping degree and the side bending degree meet the requirements.
In the production of other materials, such as various pressed parts, containers, plates and the like, because the mixed garbage powder contains the reinforcing agent such as calcium powder and the like, the reinforcing material such as calcium carbonate and the like is not required to be added in the processing process, the plastic raw material and the reinforcing agent raw material can be saved, and the substitution rate reaches 100 percent.
In the process of disposing and recycling the waste plastic garbage, the classified and recycled usable recycled plastic varieties account for 70-80%, and the rest 20-30% of other impurities of the plastic shell cannot be subdivided and recycled. Therefore, the invention focuses on recycling the mixed garbage materials, basically achieves 100% utilization, and can be successfully applied to some plastic mixed products and even new material products.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A recycling treatment method of waste plastic garbage is characterized by comprising the following steps:
s1, cleaning waste plastic garbage, and mainly removing silt impurities in the plastic garbage by using cleaning equipment to obtain a cleaner primary plastic mixture;
s2, classifying and separating the primary plastic mixture:
separating the plastic film materials, drying the primary plastic mixture by using drying equipment, conveying the primary plastic mixture into a winnowing machine by using conveying equipment, and cleaning the plastic film materials by using the winnowing machine to obtain a secondary plastic mixture;
separating metal materials, namely separating the metal materials in the secondary plastic mixture according to the gravity and/or electromagnetic principle, wherein the separated metal materials can be sold to the outside, and the metal materials are separated to obtain a tertiary plastic mixture;
and S3, classifying the plastic varieties of the three-stage plastic mixture, and separating and collecting various PP, PVC, PE, PA, PS, ABS, crosslinked polyethylene and rubber which are mixed together in a classified manner to recover or/and obtain mixed waste in a certain proportion.
2. The method of claim 1, wherein: in the step S3, plastics are classified by electromagnetic and electrostatic eddy current technology, and various mixed PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene, and rubber are separated and collected to be recycled or/and mixed waste materials with a certain ratio are obtained.
3. The method according to claim 1 or 2, characterized in that: the recycled PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene or rubber and the like are modified, and an auxiliary agent is added according to actual needs to change the performance of the recycled PP, PVC, PE, PA, PS, ABS, cross-linked polyethylene or rubber and the like, so that the recycled plastic recycled raw material is obtained according to the use technical requirements.
4. The method of claim 3, wherein: the modification processing is to use high-temperature heating equipment to modify the plastic materials and then use a forming machine to process the plastic materials into modified plastic raw materials or plastic finished products and plastic semi-finished products.
5. An application of waste plastic garbage in the production of new plastic-wood material.
6. The use according to claim 5, characterized in that the method of application is as follows:
s1, crushing the mixed waste obtained in the claim 2 in proportion until the particle diameter is smaller than 3 mm;
s2, grinding the crushed materials to obtain 80-mesh ground materials;
s3, preparing materials according to the following mass ratio, namely 30-50% of ground powder, 40-60% of wood powder and 5-10% of an auxiliary agent;
and S4, feeding the wood plastic into an extruder for extrusion molding to obtain a plastic-wood profile product.
7. The use of claim 6, wherein the auxiliary agent is one or a combination of two or more of a compatibilizer, an antioxidant, a lubricant, and a toner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110790291.9A CN113400515A (en) | 2021-07-13 | 2021-07-13 | Recycling treatment method of waste plastic garbage and application thereof |
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| CN202110790291.9A CN113400515A (en) | 2021-07-13 | 2021-07-13 | Recycling treatment method of waste plastic garbage and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI835321B (en) * | 2022-09-29 | 2024-03-11 | 莊承翰 | Forming method and system for rough surface of imitation wood |
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| CN104893339A (en) * | 2015-06-12 | 2015-09-09 | 汪新民 | Wood-plastic composite and preparation method thereof |
| CN207240596U (en) * | 2017-08-01 | 2018-04-17 | 广东隽诺环保科技股份有限公司 | A kind of plastics recovery produces cleaning system |
| CN109366807A (en) * | 2018-12-06 | 2019-02-22 | 湘南学院 | A kind of mechanical intelligence method for fine finishing sorting various material from comprehensive waste plastics |
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2021
- 2021-07-13 CN CN202110790291.9A patent/CN113400515A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN1393296A (en) * | 2001-06-27 | 2003-01-29 | 吴正德 | Process for classifying and reclaiming wastes |
| CN103802232A (en) * | 2014-01-28 | 2014-05-21 | 青岛新天地固体废物综合处置有限公司 | Production line for cleaning, sorting, modifying and pelleting waste plastics and corresponding technology |
| CN104893339A (en) * | 2015-06-12 | 2015-09-09 | 汪新民 | Wood-plastic composite and preparation method thereof |
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| TWI835321B (en) * | 2022-09-29 | 2024-03-11 | 莊承翰 | Forming method and system for rough surface of imitation wood |
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Application publication date: 20210917 |