CN114043640A - Method for producing plastic woven bag and packaging bag from waste polyester bottle - Google Patents
Method for producing plastic woven bag and packaging bag from waste polyester bottle Download PDFInfo
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- CN114043640A CN114043640A CN202111186785.2A CN202111186785A CN114043640A CN 114043640 A CN114043640 A CN 114043640A CN 202111186785 A CN202111186785 A CN 202111186785A CN 114043640 A CN114043640 A CN 114043640A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
-
- 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)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a method for producing plastic woven bags and packaging bags by waste polyester bottles, which relates to the technical field of plastic processing, wherein the invention adopts isopropyl triethoxysilane isocyanate to chemically modify regenerated PET, and the prepared modified PET has PET, carbamate and siloxane structures, thereby improving the processing performance of the regenerated PET and the application performance of plastic products processed by the regenerated PET; in addition, on the basis of the prepared modified PET, a proper amount of reinforcing agent, antistatic agent and antioxidant are added, so that the processing performance of the regenerated PET and the application performance of the plastic products prepared by reprocessing are further optimized in a physical blending mode.
Description
The technical field is as follows:
the invention relates to the technical field of plastic processing, in particular to a method for producing plastic woven bags and packaging bags from waste polyester bottles.
Background art:
polyester bottles, also known as PET bottles, are polymers produced by the reaction of terephthalic acid and ethylene glycol. The PET bottle has the characteristics of light weight, high transparency, impact resistance, difficult fragmentation and the like, can prevent carbon dioxide gas and keep the carbonated drinks to be 'gas', and is widely applied to the packaging of mineral water, carbonated drinks and other drinks.
With the wide application of PET bottles, thousands of tons of waste PET bottles are produced every year, and in order to avoid resource waste and environmental pollution, people recycle the waste PET bottles. At present, two regeneration methods of PET bottles are mainly used, one method is to adopt a chemical means to carry out depolymerization reaction on PET waste and then add polybasic acid or polyhydric alcohol to prepare new polyester through esterification reaction, but the method has the problem of large energy consumption because the depolymerization reaction is usually carried out under the conditions of high temperature and high pressure; the other method is to directly process the plastic product from the PET waste by adopting a physical means, but in order to ensure the service performance of the plastic product, the PET waste is usually blended and modified by adding additives such as reinforcing agents, plasticizers, antistatic agents, antioxidants, ultraviolet-resistant agents and the like. The invention combines chemical means and physical means, realizes the recycling of the waste polyester bottles under the condition of reducing energy consumption as much as possible, and ensures that the prepared plastic woven bag or packaging bag has excellent application performance.
The invention content is as follows:
the invention aims to solve the technical problem of providing a method for producing plastic woven bags and packaging bags from waste polyester bottles, which comprises the steps of preparing a mixture by combining chemical modification with physical modification, and then processing the mixture to produce the plastic woven bags and the packaging bags.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the invention aims to provide a method for producing plastic woven bags and packaging bags from waste polyester bottles, which comprises the following steps:
(1) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical means, and then washing and crushing to obtain PET waste;
(2) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, and cooling and granulating to obtain regenerated PET granules;
(3) adding isocyanatopropyl triethoxysilane into the regenerated PET granules, fully mixing, transferring into a reactive double-screw extruder for reaction and extrusion, cooling and granulating to obtain modified PET granules;
(4) adding a reinforcing agent, a plasticizer and an antistatic agent into the modified PET granules, fully mixing, transferring into a mixing type double-screw extruder, carrying out melt extrusion, cooling and granulating to obtain a mixture;
(5) the mixture is processed into a plastic woven bag through the working procedures of wire drawing and weaving, or the mixture is processed into a packaging bag through the working procedure of blow molding.
The PET waste material has serious plastic damage, poor formability and low strength, and the invention improves the processing performance and the application performance of the reprocessed plastic products by means of the technical means of chemical modification and physical blending.
The length-diameter ratio of the screw of the mixing type double-screw extruder is (30-50):1, the rotating speed of the screw is 100-.
The weight ratio of the regenerated PET granules to the isopropyltriethoxysilane isocyanate is 1000 (20-50). Because the reaction type double-screw extruder is used as the reactor, the reaction temperature is higher, and the reaction rate can be achieved enough to quickly finish the reaction under the condition of not adding a catalyst.
The length-diameter ratio of the screw of the reaction type double-screw extruder is (40-60):1, the rotating speed of the screw is 100-.
The mass ratio of the modified PET granules to the reinforcing agent to the plasticizer to the antistatic agent is 100 (5-20) (1-10) to (0.25-2).
The reinforcing agent is one or a mixture of two of polybutylene terephthalate (PBT) and polylactic acid (PLA). PBT and PLA are used as reinforcing agents, belong to polyester polymers, and have good compatibility with PET.
The plasticizer is one or more of tributyl citrate, epoxidized soybean oil and trioctyl trimellitate. Compared with phthalate plasticizers, tributyl citrate, epoxidized soybean oil and trioctyl trimellitate belong to the environment-friendly plasticizers which are widely applied at present. The invention adopts the isopropyltriethoxysilane isocyanate to carry out the chemical modification on the regenerated PET, thereby having the plasticizing effect, reducing the dosage of the plasticizer during the physical blending modification and reducing the input cost of the plasticizer.
The antistatic agent is ethoxylated alkylamine. Since PET materials are susceptible to friction to generate static electricity, it is desirable to reduce static buildup by adding antistatic agents.
The invention also aims to provide a preparation method of the plasticizer, which is used for replacing tributyl citrate, epoxidized soybean oil and trioctyl trimellitate as the plasticizer in the step (4) of the technical scheme, so that a better plasticizing effect is achieved.
The plasticizer is L-glutamic acid di (m-trifluoromethyl phenethyl alcohol) ester, and the structural formula is shown as follows;
the reaction equation is as follows:
the synthesis method comprises the following steps: adding L-glutamic acid into a solvent DMF, stirring for dissolving, adding m-trifluoromethyl phenethyl alcohol and a catalytic amount of concentrated sulfuric acid, wherein the molar ratio of the L-glutamic acid to the m-trifluoromethyl phenethyl alcohol is 1:2, heating to 80-85 ℃ after the addition, carrying out heat preservation reaction, adding water for precipitation after the reaction is finished, filtering, washing with water, drying, and crushing to obtain L-glutamic acid di (m-trifluoromethyl phenethyl alcohol) ester.
And (3) product structure characterization:1H NMR(DMSO-d6,400MHz),δ:8.72(s,2H),7.46-7.42(m,6H),7.21(m,2H),4.38(t,4H),3.34(t,1H),2.93(t,4H),2.35-2.29(m,4H)；ESI-MS:m/z＝492.43[M+1]+.
the invention has the beneficial effects that:
(1) the invention adopts a mechanical means to separate and remove the non-PET part on the waste polyester bottle, because the label and the bottle cap on the waste polyester bottle are not usually made of PET material, the non-PET part needs to be removed to ensure that the PET waste material only contains PET macromolecules and micromolecules generated by degradation.
(2) The invention adopts the isocyanate propyl triethoxy silane to carry out chemical modification on the regenerated PET (hydroxyl in PET molecules and isocyanate groups in isocyanate propyl triethoxy silane molecules are subjected to condensation reaction rapidly at high temperature), and the prepared modified PET has PET, carbamate and siloxane structures, thereby improving the processing performance of the regenerated PET and the application performance of plastic products processed by the regenerated PET.
(3) The invention also adds a proper amount of reinforcing agent, antistatic agent and antioxidant on the basis of the prepared modified PET, and aims to further optimize the processing performance of the regenerated PET and the application performance of the plastic products prepared by reprocessing in a physical blending mode.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Synthesis of L-glutamic acid di (m-trifluoromethylphenethyl alcohol) ester: adding 14.7g L-glutamic acid into 250mL of DMF solvent, stirring for dissolving, adding 30.8g of m-trifluoromethylphenyl ethanol and 1g of concentrated sulfuric acid, heating to 80-85 ℃ after the addition, keeping the temperature for reaction for 2h, adding water for precipitation after the reaction is finished, filtering, washing with water, drying, and crushing to obtain the L-glutamic acid di (m-trifluoromethylphenyl ethanol) ester.
Example 1
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 35:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 42 parts of isocyanatopropyl triethoxysilane into 1000 parts of regenerated PET granules, fully mixing, transferring to a reactive double-screw extruder for reaction and extrusion, wherein the length-diameter ratio of a screw is 55:1, the rotating speed of the screw is 250r/min, the temperature of the screw is 250-.
(4) Adding 100 parts of polybutylene terephthalate, 50 parts of tributyl citrate and 5 parts of ethoxylated alkylamine into 1000 parts of modified PET granules, fully mixing, transferring into a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 245-.
(5) The mixture is processed into a packaging bag through a blow molding process.
Example 2
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 250r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 38 parts of isocyanatopropyl triethoxysilane into 1000 parts of regenerated PET granules, fully mixing, transferring to a reactive double-screw extruder for reaction and extrusion, wherein the length-diameter ratio of a screw is 50:1, the rotating speed of the screw is 300r/min, the temperature of the screw is 250-.
(4) Adding 150 parts of polylactic acid, 40 parts of epoxidized soybean oil and 3 parts of ethoxylated alkylamine into 1000 parts of modified PET granules, fully mixing, transferring to a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 38:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 245-.
(5) The mixture is processed into a packaging bag through a blow molding process.
Example 3
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 38:1, the rotating speed of the screw is 150r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 45 parts of isocyanatopropyl triethoxysilane into 1000 parts of regenerated PET granules, fully mixing, transferring to a reactive double-screw extruder for reaction and extrusion, wherein the length-diameter ratio of a screw is 58:1, the rotating speed of the screw is 350r/min, the temperature of the screw is 250-.
(4) Adding 100 parts of polybutylene terephthalate, 20 parts of polylactic acid, 35 parts of trioctyl trimellitate and 5 parts of ethoxylated alkylamine into 1000 parts of modified PET granules, fully mixing, transferring to a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 250r/min, the temperature of the screw is 245-.
(5) The mixture is processed into a packaging bag through a blow molding process.
Example 4
Example 4 was obtained by replacing tributyl citrate in example 1 with the equivalent amount of di (m-trifluoromethylphenethyl) L-glutamate, and the remaining steps and conditions were unchanged.
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 35:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 42 parts of isocyanatopropyl triethoxysilane into 1000 parts of regenerated PET granules, fully mixing, transferring to a reactive double-screw extruder for reaction and extrusion, wherein the length-diameter ratio of a screw is 55:1, the rotating speed of the screw is 250r/min, the temperature of the screw is 250-.
(4) Adding 100 parts of polybutylene terephthalate, 50 parts of L-glutamic acid di (m-trifluoromethylphenethyl alcohol) ester and 5 parts of ethoxylated alkylamine into 1000 parts of modified PET granules, fully mixing, transferring to a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 245-.
(5) The mixture is processed into a packaging bag through a blow molding process.
Example 5
Example 5 was obtained by replacing tributyl citrate in example 1 with 40 parts of di (m-trifluoromethylphenethyl) L-glutamate, and the remaining steps and conditions were unchanged.
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 35:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 42 parts of isocyanatopropyl triethoxysilane into 1000 parts of regenerated PET granules, fully mixing, transferring to a reactive double-screw extruder for reaction and extrusion, wherein the length-diameter ratio of a screw is 55:1, the rotating speed of the screw is 250r/min, the temperature of the screw is 250-.
(4) Adding 100 parts of polybutylene terephthalate, 40 parts of L-glutamic acid di (m-trifluoromethylphenethyl alcohol) ester and 5 parts of ethoxylated alkylamine into 1000 parts of modified PET granules, fully mixing, transferring to a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 245-.
(5) The mixture is processed into a packaging bag through a blow molding process.
Comparative example 1
Step (3) in example 1 was deleted, and the remaining steps and conditions were unchanged to obtain comparative example 1.
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 35:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 100 parts of polybutylene terephthalate, 50 parts of tributyl citrate and 5 parts of ethoxylated alkylamine into 1000 parts of regenerated PET granules, fully mixing, transferring into a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 245-.
(4) The mixture is processed into a packaging bag through a blow molding process.
Comparative example 2
The plasticizer in example 1 was deleted and the remaining steps and conditions were unchanged to give comparative example 2.
(1) And (3) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical method, and then washing and crushing to obtain the PET waste.
(2) And (3) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, wherein the length-diameter ratio of a screw is 35:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 250-255 ℃, and cooling and granulating are carried out to obtain the regenerated PET granules.
(3) Adding 42 parts of isocyanatopropyl triethoxysilane into 1000 parts of regenerated PET granules, fully mixing, transferring to a reactive double-screw extruder for reaction and extrusion, wherein the length-diameter ratio of a screw is 55:1, the rotating speed of the screw is 250r/min, the temperature of the screw is 250-.
(4) Adding 100 parts of polybutylene terephthalate and 5 parts of ethoxylated alkylamine into 1000 parts of modified PET granules, fully mixing, transferring to a mixing type double-screw extruder, carrying out melt extrusion, wherein the length-diameter ratio of a screw is 40:1, the rotating speed of the screw is 200r/min, the temperature of the screw is 245-.
(5) The mixture is processed into a packaging bag through a blow molding process.
The tensile properties of the bags prepared in the examples and comparative examples were tested in accordance with the standard GB/T13022-1991 method for testing tensile properties of Plastic films.
The test results are shown in Table 1.
Table 1 tensile property test results of the packaging bags prepared in examples and comparative examples
As can be seen from Table 1, the addition of the plasticizer, the replacement of the plasticizer, and the chemical modification of PET in the examples substantially improve the tensile properties of the final recycled PET product.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method for producing plastic woven bags and packaging bags by using waste polyester bottles is characterized by comprising the following steps:
(1) separating and removing non-PET parts on the waste polyester bottles by adopting a mechanical means, and then washing and crushing to obtain PET waste;
(2) carrying out melt extrusion on the PET waste material by using a mixing type double-screw extruder, and cooling and granulating to obtain regenerated PET granules;
(3) adding isocyanatopropyl triethoxysilane into the regenerated PET granules, fully mixing, transferring into a reactive double-screw extruder for reaction and extrusion, cooling and granulating to obtain modified PET granules;
(4) adding a reinforcing agent, a plasticizer and an antistatic agent into the modified PET granules, fully mixing, transferring into a mixing type double-screw extruder, carrying out melt extrusion, cooling and granulating to obtain a mixture;
(5) the mixture is processed into a plastic woven bag through the working procedures of wire drawing and weaving, or the mixture is processed into a packaging bag through the working procedure of blow molding.
2. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the length-diameter ratio of the screw of the mixing type double-screw extruder is (30-50):1, the rotating speed of the screw is 100-.
3. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the weight ratio of the regenerated PET granules to the isopropyltriethoxysilane isocyanate is 1000 (20-50).
4. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the length-diameter ratio of the screw of the reaction type double-screw extruder is (40-60):1, the rotating speed of the screw is 100-.
5. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the mass ratio of the modified PET granules to the reinforcing agent to the plasticizer to the antistatic agent is 100 (5-20) (1-10) to (0.25-2).
6. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the reinforcing agent is one or a mixture of two of polybutylene terephthalate and polylactic acid.
7. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the plasticizer is one or more of tributyl citrate, epoxidized soybean oil and trioctyl trimellitate.
8. The method for producing the plastic woven bags and the packaging bags by using the waste polyester bottles as claimed in claim 1, is characterized in that: the antistatic agent is ethoxylated alkylamine.
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| CN202111186785.2A CN114043640A (en) | 2021-10-12 | 2021-10-12 | Method for producing plastic woven bag and packaging bag from waste polyester bottle |
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| CN202111186785.2A CN114043640A (en) | 2021-10-12 | 2021-10-12 | Method for producing plastic woven bag and packaging bag from waste polyester bottle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122528A (en) * | 2022-06-30 | 2022-09-30 | 安徽省天助纺织科技集团股份有限公司 | Method for manufacturing environment-friendly packaging bag by using waste textiles |
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2021
- 2021-10-12 CN CN202111186785.2A patent/CN114043640A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122528A (en) * | 2022-06-30 | 2022-09-30 | 安徽省天助纺织科技集团股份有限公司 | Method for manufacturing environment-friendly packaging bag by using waste textiles |
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