CN113121900A - Degradable garbage bag and preparation method thereof - Google Patents
Degradable garbage bag and preparation method thereof Download PDFInfo
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- CN113121900A CN113121900A CN201911419051.7A CN201911419051A CN113121900A CN 113121900 A CN113121900 A CN 113121900A CN 201911419051 A CN201911419051 A CN 201911419051A CN 113121900 A CN113121900 A CN 113121900A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
-
- 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
- B29B9/12—Making granules characterised by structure or composition
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/003—Crosslinking of starch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Refuse Receptacles (AREA)
Abstract
The invention provides a degradable garbage bag and a preparation method thereof, wherein the degradable garbage bag comprises the following components in parts by weight: 40-65 parts of low-pressure high-density polyethylene, 20-40 parts of degradable material, 5-20 parts of linear low-density polyethylene, 1-10 parts of high-pressure low-density polyethylene and 1-10 parts of color master batch. The garbage bag can be completely degraded, has no pollution to the environment, easily obtained raw materials and low cost, and has high use value and good application prospect.
Description
Technical Field
The invention particularly relates to a degradable garbage bag and a preparation method thereof.
Background
Most of plastic bags for daily shopping are made of petroleum, and due to the large using amount, the resource waste and the environmental pollution are very remarkable. The plastic bags take about 200 years to rot after being buried underground and seriously pollute the soil; if the incineration disposal mode is adopted, harmful smoke and dust and toxic gas can be generated, and the environment is polluted for a long time.
China needs to use 10 hundred million plastic bags for buying vegetables every day, and the consumption of other various plastic bags is more than 20 hundred million every day. Beijing abandons 23 hundred million plastic bags every year, produces 14 million tons of waste plastic packaging garbage, and accounts for 3 percent of the whole household garbage. 19 million tons of waste plastic packaging garbage are generated in Shanghai every year, and account for 7 percent of the total amount of the household garbage. The amount of waste plastic packaging garbage of Tianjin per year is more than 10 ten thousand tons. Plastic bags given in markets are mainly non-degradable and if used as trash bags, they are a serious environmental hazard. In order to reduce white pollution and protect the ecological environment, the research, development and use of biodegradable plastics are becoming more and more important and urgent.
Disclosure of Invention
In order to solve the technical problems, the invention provides the degradable garbage bag and the preparation method thereof, which can realize complete degradation, have no pollution to the environment, easily obtained raw materials and low cost, and have very high use value and good application prospect.
The invention adopts the following technical scheme:
a degradable garbage bag comprises the following components in parts by weight:
preferably, the degradable material is modified starch, and the modified starch comprises 20-40 parts of starch, 0.02-0.06 part of cross-linking agent, 0.02-0.1 part of catalyst and 0.05-1 part of neutralizing agent.
Preferably, the crosslinking agent is phosphorus oxychloride or sodium trimetaphosphate.
Preferably, the catalyst is sodium hydroxide.
Preferably, the neutralizing agent is hydrochloric acid or nitric acid.
Preferably, the starch is one or more of potato starch, corn starch, tapioca starch and mung bean starch.
The invention also discloses a preparation method of the degradable garbage bag, which comprises the following steps:
s1, preparing modified starch;
s2, adding the modified starch, the low-pressure high-density polyethylene, the linear low-density polyethylene, the high-pressure low-density polyethylene and the color master into a mixer according to the proportion to be uniformly mixed to obtain a mixture;
s3, adding the mixture into a double-screw extruder to extrude and granulate to obtain degradable granules;
and S4, blow molding the degradable pellets.
Preferably, the modified starch is prepared by the following preparation method:
s11, preparing starch slurry with the concentration of 10-20%;
s12, cooling the obtained starch slurry to 40-45 ℃, adding a catalyst, continuously stirring, heating to 65-70 ℃, adding a cross-linking agent, continuously stirring, and adding a neutralizing agent to obtain a modified starch solution with the pH value of 6-7;
s13, carrying out vacuum filtration on the modified starch solution, putting the filter cake into an oven with the drying temperature of 60-65 ℃ for drying for 5-7h, taking out and grinding, and sieving with a 100-mesh and 200-mesh sieve to obtain the modified starch.
Preferably, the method for preparing the starch slurry with the concentration of 10-20% is to add the starch and the water with corresponding weight parts into a stirrer for dispersion, control the rotating speed to be 1500-.
Preferably, the extruder is including the reinforced section, middle section and the extruder head that connect gradually, just the operating temperature of extruder is: the feeding section is 90-100 ℃, the middle section is 110-120 ℃, and the extrusion head is 165-180 ℃.
The invention has the beneficial effects that:
(1) the polyethylene is filled with the corn starch, so that the corn starch is uniformly dispersed in the polyethylene matrix, and the polyethylene modified material is disintegrated into fragments along with the biodegradation of the corn starch, so that the polyethylene modified material has a certain degree of degradability;
(2) according to the invention, starch is modified, the hydrophobic property is given to the starch through the substitution effect of hydroxyl functional groups of a cross-linking agent, the relation among partial molecules in starch granules is increased, and the cross-linking density in the starch structure is increased, the modified starch has strong phase separation resistance, good ageing resistance and high freezing resistance stability due to the existence of a large number of cross-linking bonds, and the prepared film has high strength and good toughness and is difficult to dissolve in water;
(3) the garbage bag produced by the material has the advantages of light yellow and transparent appearance, smooth surface, no toxicity and no harm;
(4) in the production process, a double-screw extruder is used, cooling water is recycled, no waste water, waste gas or waste residue is generated, and large-scale production can be realized.
(5) The invention has the advantages of easily obtained raw materials, low cost, high use value and good application prospect.
Detailed Description
Various aspects of the invention are described in detail below:
unless otherwise specified, various starting materials of the present invention are commercially available; or prepared according to conventional methods in the art. Unless defined or stated otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention.
A degradable garbage bag is composed of the following components in parts by weight: 40-65 parts of low-pressure high-density polyethylene, 20-40 parts of degradable material, 5-20 parts of linear low-density polyethylene, 1-10 parts of high-pressure low-density polyethylene and 1-10 parts of color master batch.
Wherein the degradable material is modified starch, and the modified starch comprises 20-40 parts of starch, 0.02-0.06 part of cross-linking agent, 0.02-0.1 part of catalyst and 0.05-1 part of neutralizing agent; the starch is one or more of potato starch, corn starch, cassava starch and mung bean starch; the cross-linking agent is phosphorus oxychloride or sodium trimetaphosphate; the catalyst is sodium hydroxide; the neutralizing agent is hydrochloric acid or nitric acid.
The specific preparation process comprises the following steps: adding starch and water in corresponding weight parts into a stirrer for dispersion, controlling the rotation speed to be 1500-; cooling the starch slurry to 40-45 ℃, adding a catalyst, continuously stirring, heating to 65-70 ℃, adding a cross-linking agent, continuously stirring, and adding a neutralizing agent to obtain a modified starch solution with a pH value of 6-7; vacuum filtering the modified starch solution, putting the filter cake into an oven with the drying temperature of 60-65 ℃ for drying for 5-7h, taking out and grinding, and sieving with a 100-mesh and 200-mesh sieve to obtain modified starch; adding the modified starch, the low-pressure high-density polyethylene, the linear low-density polyethylene, the high-pressure low-density polyethylene and the color master into a mixer according to the proportion to be uniformly mixed to obtain a mixture; adding the mixture into a double-screw extruder for extrusion granulation to prepare degradable granules; and blow molding the degradable granules.
Wherein, the extruder is including the reinforced section, middle section and the extruder head that connect gradually, just the operating temperature of extruder is: the feeding section is 90-100 ℃, the middle section is 110-120 ℃, and the extrusion head is 165-180 ℃.
The invention adopts corn starch to fill polyethylene, so that the corn starch is uniformly dispersed in the polyethylene matrix, and the polyethylene modified material is disintegrated into fragments along with the biodegradation of the corn starch, so that the polyethylene modified material has certain degradability.
Example 1
In the embodiment, the degradable garbage bag comprises the following components in parts by weight: 65 parts of low-pressure high-density polyethylene, 20 parts of modified starch, 10 parts of linear low-density polyethylene, 4 parts of high-pressure low-density polyethylene and 1 part of color master batch.
Wherein, the modified starch consists of 10 parts of potato starch and 10 parts of corn starch, and the cross-linking agent is phosphorus oxychloride; the catalyst is sodium hydroxide; the neutralizing agent is hydrochloric acid.
Adding starch and water in corresponding weight parts into a stirrer for dispersion, controlling the rotation speed to be 1500-; cooling the starch slurry to 40-45 ℃, adding 0.02-0.1 part of catalyst, continuously stirring, heating to 65-70 ℃, adding 0.02-0.06 part of cross-linking agent, continuously stirring, and adding 0.05-1 part of neutralizing agent to obtain a modified starch solution with the pH value of 6-7; vacuum filtering the modified starch solution, putting the filter cake into an oven with the drying temperature of 60-65 ℃ for drying for 5-7h, taking out and grinding, and sieving with a 100-mesh and 200-mesh sieve to obtain modified starch; adding the modified starch, the low-pressure high-density polyethylene, the linear low-density polyethylene, the high-pressure low-density polyethylene and the color master into a mixer according to the proportion to be uniformly mixed to obtain a mixture; adding the mixture into a double-screw extruder for extrusion granulation to prepare degradable granules; and blow molding the degradable granules.
Wherein, the extruder is including the reinforced section, middle section and the extruder head that connect gradually, just the operating temperature of extruder is: the feeding section is 90-100 ℃, the middle section is 110-120 ℃, and the extrusion head is 165-180 ℃.
The degradable garbage bag is prepared according to the method, and is subjected to a soil burying method test, after 85 days, the garbage bag is degraded, the thickness of the garbage bag is reduced from 0.03mm to 0.02mm, the tensile strength is reduced from 25.6MPa to 11.2MPa, and the breaking tensile rate is reduced from 180% to 120%; after 265 days, the garbage bags are completely degraded, and no garbage bags are left in the soil.
Example 2
In the embodiment, the degradable garbage bag comprises the following components in parts by weight: 40 parts of low-pressure high-density polyethylene, 40 parts of modified starch, 5 parts of linear low-density polyethylene, 10 parts of high-pressure low-density polyethylene and 5 parts of color master batch.
Wherein the modified starch consists of 20 parts of potato starch, 10 parts of corn starch and 10 parts of cassava starch, and the cross-linking agent is sodium trimetaphosphate; the catalyst is sodium hydroxide; the neutralizing agent is nitric acid.
The preparation method of the degradable garbage bag in this embodiment is the same as that in embodiment 1, and is not described herein again.
The degradable garbage bag is prepared according to the method, and is subjected to a soil burying method test, after 64 days, the garbage bag is degraded, the thickness of the garbage bag is reduced from 0.03mm to 0.01mm, the tensile strength is reduced from 22.4MPa to 10.3MPa, and the breaking tensile rate is reduced from 200% to 98%; after 238 days, the garbage bags are completely degraded, and no garbage bags are left in the soil.
Example 3
In the embodiment, the degradable garbage bag comprises the following components in parts by weight: 50 parts of low-pressure high-density polyethylene, 30 parts of modified starch, 10 parts of linear low-density polyethylene, 7 parts of high-pressure low-density polyethylene and 3 parts of color master batch.
Wherein the modified starch consists of 10 parts of potato starch, 10 parts of corn starch and 10 parts of cassava starch, and the cross-linking agent is sodium trimetaphosphate; the catalyst is sodium hydroxide; the neutralizing agent is hydrochloric acid.
The preparation method of the degradable garbage bag in this embodiment is the same as that in embodiment 1, and is not described herein again.
The degradable garbage bag is prepared according to the method, and is subjected to a soil burying method test, after 52 days, the garbage bag is degraded, the thickness of the garbage bag is reduced from 0.03mm to 0.008mm, the tensile strength is reduced from 24.1MPa to 7.5MPa, and the breaking tensile rate is reduced from 190% to 90%; after 228 days, the garbage bags are completely degraded, and no garbage bags are left in the soil.
Example 4
In the embodiment, the degradable garbage bag comprises the following components in parts by weight: 50 parts of low-pressure high-density polyethylene, 40 parts of modified starch, 6 parts of linear low-density polyethylene, 3 parts of high-pressure low-density polyethylene and 1 part of color master batch.
Wherein the modified starch consists of 10 parts of potato starch, 10 parts of corn starch, 10 parts of cassava starch and 10 parts of mung bean starch, and the cross-linking agent is phosphorus oxychloride; the catalyst is sodium hydroxide; the neutralizing agent is hydrochloric acid.
The preparation method of the degradable garbage bag in this embodiment is the same as that in embodiment 1, and is not described herein again.
The degradable garbage bag is prepared according to the method, and is subjected to a soil burying method test, after 75 days, the garbage bag is degraded, the thickness of the garbage bag is reduced from 0.03mm to 0.012mm, the tensile strength is reduced from 20.8MPa to 10.7MPa, and the breaking tensile rate is reduced from 190% to 110%; the garbage bags are completely degraded after 281 days, and no garbage bags are left in the soil.
As can be seen from the above performance test results, the performance of each embodiment of the present invention is very excellent, and in addition to having sufficient mechanical strength, it also has a certain degree of degradability.
In conclusion, the polyethylene is filled with the corn starch, so that the corn starch is uniformly dispersed in the polyethylene matrix, and the polyethylene modified material is disintegrated into fragments along with the biodegradation of the corn starch, so that the polyethylene modified material has a certain degree of degradability; according to the invention, starch is modified, the hydrophobic property is given to the starch through the substitution effect of hydroxyl functional groups of a cross-linking agent, the relation among partial molecules in starch granules is increased, and the cross-linking density in the starch structure is increased, the modified starch has strong phase separation resistance, good ageing resistance and high freezing resistance stability due to the existence of a large number of cross-linking bonds, and the prepared film has high strength and good toughness and is difficult to dissolve in water; the garbage bag produced by the material has the advantages of light yellow and transparent appearance, smooth surface, no toxicity and no harm; in the production process, a double-screw extruder is used, cooling water is recycled, no waste water, waste gas or waste residue is generated, and large-scale production can be realized. The invention has the advantages of easily obtained raw materials, low cost, high use value and good application prospect.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The degradable garbage bag is characterized by comprising the following components in parts by weight:
2. the degradable garbage bag of claim 1, wherein the degradable material is modified starch, and the modified starch comprises 20-40 parts of starch, 0.02-0.06 part of cross-linking agent, 0.02-0.1 part of catalyst and 0.05-1 part of neutralizing agent.
3. The degradable garbage bag of claim 2 wherein said crosslinking agent is phosphorus oxychloride or sodium trimetaphosphate.
4. The degradable garbage bag of claim 2 wherein said catalyst is sodium hydroxide.
5. The degradable garbage bag of claim 2 wherein said neutralizing agent is hydrochloric acid or nitric acid.
6. The degradable garbage bag of claim 2 wherein said starch is one or more of potato starch, corn starch, tapioca starch and mung bean starch.
7. The preparation method of the degradable garbage bag is characterized by comprising the following steps:
s1, preparing modified starch;
s2, adding the modified starch, the low-pressure high-density polyethylene, the linear low-density polyethylene, the high-pressure low-density polyethylene and the color master into a mixer according to the proportion to be uniformly mixed to obtain a mixture;
s3, adding the mixture into a double-screw extruder to extrude and granulate to obtain degradable granules;
and S4, blow molding the degradable pellets.
8. The method for preparing the degradable garbage bag according to claim 7, wherein the modified starch is prepared by the following preparation method:
s11, preparing starch slurry with the concentration of 10-20%;
s12, cooling the obtained starch slurry to 40-45 ℃, adding a catalyst, continuously stirring, heating to 65-70 ℃, adding a cross-linking agent, continuously stirring, and adding a neutralizing agent to obtain a modified starch solution with the pH value of 6-7;
s13, carrying out vacuum filtration on the modified starch solution, putting the filter cake into an oven with the drying temperature of 60-65 ℃ for drying for 5-7h, taking out and grinding, and sieving with a 100-mesh and 200-mesh sieve to obtain the modified starch.
9. The method for preparing a degradable garbage bag according to claim 8, wherein the method for preparing the starch slurry with the concentration of 10% -20% is to add starch and water in corresponding weight parts into a mixer for dispersion, control the rotation speed to 1500-.
10. The method for preparing the degradable garbage bag according to claim 7, wherein the extruder comprises a feeding section, a middle section and an extruder head which are connected in sequence, and the working temperature of the extruder is as follows: the feeding section is 90-100 ℃, the middle section is 110-120 ℃, and the extrusion head is 165-180 ℃.
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| CN201911419051.7A CN113121900A (en) | 2019-12-31 | 2019-12-31 | Degradable garbage bag and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911419051.7A CN113121900A (en) | 2019-12-31 | 2019-12-31 | Degradable garbage bag and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311906A (en) * | 2021-12-31 | 2022-04-12 | 晋江市祥兴纸塑彩印有限公司 | Polyethylene composite packaging bag and processing technology thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015999A1 (en) * | 1993-12-10 | 1995-06-15 | Minister Of National Defence | Thermoplastic photodegradable and biodegradable polymer blend |
| CN102276898A (en) * | 2011-07-04 | 2011-12-14 | 武汉华丽生物材料有限公司 | Degradable rat-proof biobased garbage bag and preparation method thereof |
| WO2019207751A1 (en) * | 2018-04-27 | 2019-10-31 | ピーライフ・ジャパン・インク株式会社 | Method for degrading shaped resin object and degradable resin product |
| CN110527146A (en) * | 2019-08-14 | 2019-12-03 | 武汉市鑫麒盛环保科技有限责任公司 | A kind of degradable sorting rubbish bag and preparation method thereof |
-
2019
- 2019-12-31 CN CN201911419051.7A patent/CN113121900A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015999A1 (en) * | 1993-12-10 | 1995-06-15 | Minister Of National Defence | Thermoplastic photodegradable and biodegradable polymer blend |
| CN102276898A (en) * | 2011-07-04 | 2011-12-14 | 武汉华丽生物材料有限公司 | Degradable rat-proof biobased garbage bag and preparation method thereof |
| WO2019207751A1 (en) * | 2018-04-27 | 2019-10-31 | ピーライフ・ジャパン・インク株式会社 | Method for degrading shaped resin object and degradable resin product |
| CN110527146A (en) * | 2019-08-14 | 2019-12-03 | 武汉市鑫麒盛环保科技有限责任公司 | A kind of degradable sorting rubbish bag and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311906A (en) * | 2021-12-31 | 2022-04-12 | 晋江市祥兴纸塑彩印有限公司 | Polyethylene composite packaging bag and processing technology thereof |
| CN114311906B (en) * | 2021-12-31 | 2024-01-30 | 晋江市祥兴纸塑彩印有限公司 | Polyethylene composite packaging bag and processing technology thereof |
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