CN103819746A - Degradable environment-friendly shopping bag - Google Patents
Degradable environment-friendly shopping bag Download PDFInfo
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- CN103819746A CN103819746A CN201210465275.3A CN201210465275A CN103819746A CN 103819746 A CN103819746 A CN 103819746A CN 201210465275 A CN201210465275 A CN 201210465275A CN 103819746 A CN103819746 A CN 103819746A
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- shopping bag
- bag
- density polyethylene
- degradable environment
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Abstract
The invention discloses a degradable environment-friendly shopping bag. The shopping bag is a T-shirt bag or a waistcoat bag, 25-35 microns in thickness, 30-50 cm in length, and 20-30 cm in width, the rim width of the bag is 10-16 cm, and the length of the handle of the bag is 12-16 cm. The shopping bag comprises the following ingredients in parts by weight: 100 parts of vegetable starch, 1-2 parts of stearic acid, 1.5-2.5 parts of calcium stearate, 1.5-2.5 parts of a titanate coupling agent, 4-6 parts of heavy calcium carbonate powder, 2-4 parts of liquid paraffin, 14-16 parts of ethylene-methyl acrylate copolymer, 15-17 parts of low density polyethylene, 6-8 parts of linear polyethylene, and 13-15 parts of high density polyethylene.
Description
Technical field
The present invention relates to field of packaging material, relate in particular to a kind of Degradable environment protection shopping bag.
Background technology
The shopping bag that supermarket, market, country fair etc. provide is all to adopt the polymer materialss such as polystyrene, polyethylene, polypropylene to make substantially, because they cannot be degraded, ecotope is done great damage, threatening the space of human survival, people are referred to as " white pollution ".For this reason, general office of State Council of the People's Republic of China has issued " selling the notice that uses plastic shopping bag about limit production ".According to notice, in view of shopping bag becomes the main source of " white pollution ", the various places People's Government, ministries and commissions etc. should forbid producing, selling and uying super-thin plastic shopping bag, and will carry out plastic shopping bag Paid Use System from now on.From 1 day June in 2008, plastic shopping bag Paid Use System was carried out in commodity retail place in all supermarkets, market, country fair etc., must not provide free without exception plastic shopping bag.Although paid utilization has limited the shopping bag of some amount, the pollution problem of shopping bag itself is not still resolved.
For this reason, people start degradable package bag to study gradually, and increasing degradative plastics goods start to emerge in large numbers.But always there is such or such deficiency in current degradation products.At present many is that employing petroleum-based plastics polyolefine material is that carrier is prepared degradative plastics, or adopt the polylactic acid-based macromolecular material of preparing from crude substance to improve the biological degradability of degradative plastics, but, the resistance toheat deficiency of material after processing, be difficult to meet the service requirements of shopping bag, and the cost compare of poly(lactic acid) is high.
For example, application number is the blend that has adopted degradable high polymer material and natural macromolecular material in 200710190063.8 patent, to solving the contradiction between Performance and Cost Modeling, wherein, the content of poly(lactic acid) and thermoplastic starch is 1: 1 substantially, although this scheme makes moderate progress to the performance of product, still not ideal enough and cost is still very high.
Summary of the invention
The object of the invention is to propose a kind of Degradable environment protection shopping bag, by the adjustment of shopping bag component, its natural degradation rate is reached more than 60%, and the obdurability of shopping bag is good, meet service requirements, and preparation cost is low.
For reaching this object, the present invention by the following technical solutions:
A kind of Degradable environment protection shopping bag, this shopping bag is plastic bag or plastic shopping bag, thickness is 25-35 μ m, length is 30-50cm, width is 20-30cm, hem width 10-16cm, handle length 12-16cm, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, stearic acid 1-2 part, calcium stearate 1.5-2.5 part, titanate coupling agent 1.5-2.5 part, heavy calcium carbonate 4-6 part, whiteruss 2-4 part, ethylene-methyl acrylate copolymer 14-16 part, Low Density Polyethylene 15-17 part, linear polyethylene 6-8 part, high density polyethylene(HDPE) 13-15 part.
Preferably, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, 1.5 parts of stearic acid, 2 parts of calcium stearates, 2 parts of titanate coupling agents, 5 parts of heavy calcium carbonates, 3 parts of whiterusss, 15 parts of ethylene-methyl acrylate copolymers, 16 parts of Low Density Polyethylenes, 7 parts of linear polyethylenes, 14 parts of high density polyethylene(HDPE)s.
This shopping bag can be prepared as follows:
1) get suitable quantity of water, be heated to 75-85 ℃, plant amylum is added, stir into starch paste;
2) in proportion stearic acid, calcium stearate, titanate coupling agent, heavy calcium carbonate, whiteruss, ethylene-methyl acrylate copolymer, Low Density Polyethylene, linear polyethylene, high density polyethylene(HDPE) are put into high-speed kneading machine, be heated to 115-125 ℃ and start stir, stir 14-16 minute, then add the 1st) starch paste of step, stir 8-10 minute, obtain compound;
3) by the 2nd) compound prepared of step puts into twin screw extruder, granulation on twin screw extruder at 165-175 ℃ of temperature, then adopt single Screw Extrusion blow moulding machine Blown Film at 160-170 ℃, be then prepared into shopping bag.
Beneficial effect of the present invention is:
1) the present invention is take starch as base, coordinate appropriate additive, and add the obdurability of appropriate polyvinyl resin assurance shopping bag, obtained good technique effect, specific targets are as follows: tensile strength > 45MPa, elongation at break >=220%.
2) the present invention is take starch as main body, and natural degradation rate reaches more than 60%, residue do not degrade component recyclable, also can burning disposal, when burning, produce without hazardous and noxious substances, therefore this shopping bag good environmental protection.
Embodiment
Embodiment mono-
A kind of Degradable environment protection shopping bag, this shopping bag is plastic bag or plastic shopping bag, thickness is 25 μ m, length is 30cm, width is 20cm, hem width 10cm, handle length 12cm, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, 1 part of stearic acid, 2.5 parts of calcium stearates, 1.5 parts of titanate coupling agents, 6 parts of heavy calcium carbonates, 2 parts of whiterusss, 16 parts of ethylene-methyl acrylate copolymers, 15 parts of Low Density Polyethylenes, 8 parts of linear polyethylenes, 13 parts of high density polyethylene(HDPE)s.
Embodiment bis-
A kind of Degradable environment protection shopping bag, this shopping bag is plastic bag or plastic shopping bag, thickness is 35 μ m, length is 50cm, width is 30cm, hem width 16cm, handle length 16cm, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, 2 parts of stearic acid, 1.5 parts of calcium stearates, 2.5 parts of titanate coupling agents, 4 parts of heavy calcium carbonates, 4 parts of whiterusss, 14 parts of ethylene-methyl acrylate copolymers, 17 parts of Low Density Polyethylenes, 6 parts of linear polyethylenes, 15 parts of high density polyethylene(HDPE)s.
Embodiment tri-
A kind of Degradable environment protection shopping bag, this shopping bag is plastic bag or plastic shopping bag, thickness is 30 μ m, length is 40cm, and width is 25cm, hem width 13cm, handle length 15cm, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, 1.5 parts of stearic acid, 2 parts of calcium stearates, 2 parts of titanate coupling agents, 5 parts of heavy calcium carbonates, 3 parts of whiterusss, 15 parts of ethylene-methyl acrylate copolymers, 16 parts of Low Density Polyethylenes, 7 parts of linear polyethylenes, 14 parts of high density polyethylene(HDPE)s.
Claims (2)
1. a Degradable environment protection shopping bag, it is characterized in that, this shopping bag is plastic bag or plastic shopping bag, thickness is 25-35 μ m, length is 30-50cm, width is 20-30cm, hem width 10-16cm, handle length 12-16cm, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, stearic acid 1-2 part, calcium stearate 1.5-2.5 part, titanate coupling agent 1.5-2.5 part, heavy calcium carbonate 4-6 part, whiteruss 2-4 part, ethylene-methyl acrylate copolymer 14-16 part, Low Density Polyethylene 15-17 part, linear polyethylene 6-8 part, high density polyethylene(HDPE) 13-15 part.
2. a kind of Degradable environment protection shopping bag as claimed in claim 1, it is characterized in that, the composition of this shopping bag is made up of following component in weight part: 100 parts of plant amylums, 1.5 parts of stearic acid, 2 parts of calcium stearates, 2 parts of titanate coupling agents, 5 parts of heavy calcium carbonates, 3 parts of whiterusss, 15 parts of ethylene-methyl acrylate copolymers, 16 parts of Low Density Polyethylenes, 7 parts of linear polyethylenes, 14 parts of high density polyethylene(HDPE)s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465275.3A CN103819746A (en) | 2012-11-16 | 2012-11-16 | Degradable environment-friendly shopping bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465275.3A CN103819746A (en) | 2012-11-16 | 2012-11-16 | Degradable environment-friendly shopping bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103819746A true CN103819746A (en) | 2014-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210465275.3A Pending CN103819746A (en) | 2012-11-16 | 2012-11-16 | Degradable environment-friendly shopping bag |
Country Status (1)
| Country | Link |
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| CN (1) | CN103819746A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817756A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Preparation method of environment-friendly shopping bag |
| CN104817757A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Environment-friendly shopping bag |
| CN108610515A (en) * | 2018-05-08 | 2018-10-02 | 南通联荣集团有限公司 | A kind of environment-friendly degradable container bag and preparation method thereof |
| CN110655686A (en) * | 2019-11-13 | 2020-01-07 | 浙江华发生态科技有限公司 | High-starch-content film blowing composite material and preparation method thereof |
-
2012
- 2012-11-16 CN CN201210465275.3A patent/CN103819746A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817756A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Preparation method of environment-friendly shopping bag |
| CN104817757A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Environment-friendly shopping bag |
| CN108610515A (en) * | 2018-05-08 | 2018-10-02 | 南通联荣集团有限公司 | A kind of environment-friendly degradable container bag and preparation method thereof |
| CN110655686A (en) * | 2019-11-13 | 2020-01-07 | 浙江华发生态科技有限公司 | High-starch-content film blowing composite material and preparation method thereof |
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Application publication date: 20140528 |