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Degradable plastic packaging bag

A technology for packaging bags and plastics, applied in the field of plastic packaging bags, can solve the problems of low recycling value of plastic bags, low strength, environmental hazards, etc., and achieve the effects of good use prospects, high structural strength, and good ductility.

Pending Publication Date: 2022-03-18
张运才
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the recycling value of plastic bags is extremely low, and they are not easy to be degraded by natural microorganisms. If they are not separated in the natural environment for a long time, they will cause great harm to the environment. However, the cost of existing degradable plastic bags is too high, not only their strength is weak Low, and the degradation effect is not ideal, so the production of a degradable plastic packaging bag is of great significance for replacing traditional non-degradable plastic bags

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A degradable plastic packaging bag, in parts by mass, consists of the following components: 26 parts of polyvinyl alcohol, 20 parts of tapioca starch, 12 parts of calcium carbonate, 5 parts of chitosan, 12 parts of polyvinyl chloride, antioxidant 8 parts, glycerin 10 parts, bamboo fiber 5 parts, lubricant 2 parts.

[0026] A kind of preparation method of degradable plastic packaging bag, its method comprises the steps:

[0027] (1) Weigh tapioca starch, calcium carbonate, chitosan, polyvinyl chloride, glycerin and bamboo fiber raw materials, put the raw materials into a stirring tank, stir and mix evenly to obtain a mixture, and set aside;

[0028] Further, during the stirring process, the temperature is kept at 120° C., the stirring speed is 60 r / min, and the stirring time is 30 minutes, so as to increase the mixing effect of the raw materials and ensure that the raw materials are evenly mixed.

[0029] (2) Dissolving polyvinyl alcohol solids in water to form a polyvi...

Embodiment 2

[0038] A degradable plastic packaging bag, in parts by mass, consists of the following components: 29 parts of polyvinyl alcohol, 15 parts of tapioca starch, 10 parts of calcium carbonate, 7 parts of chitosan, 10 parts of polyvinyl chloride, antioxidant 9 parts, glycerin 11 parts, bamboo fiber 6 parts, lubricant 3 parts.

[0039] A kind of preparation method of degradable plastic packaging bag, its method comprises the steps:

[0040] (1) Weigh tapioca starch, calcium carbonate, chitosan, polyvinyl chloride, glycerin and bamboo fiber raw materials, put the raw materials into a stirring tank, stir and mix evenly to obtain a mixture, and set aside;

[0041] Further, during the stirring process, the temperature is kept at 130° C., the stirring speed is 65 r / min, and the stirring time is 25 minutes, so as to increase the mixing effect of the raw materials and ensure that the raw materials are evenly mixed.

[0042] (2) Dissolving polyvinyl alcohol solids in water to form a polyvi...

Embodiment 3

[0051] A degradable plastic packaging bag, in parts by mass, consists of the following components: 28 parts of polyvinyl alcohol, 16 parts of tapioca starch, 10 parts of calcium carbonate, 9 parts of chitosan, 10 parts of polyvinyl chloride, antioxidant 8 parts, glycerin 10 parts, bamboo fiber 5 parts, lubricant 4 parts.

[0052] A kind of preparation method of degradable plastic packaging bag, its method comprises the steps:

[0053] (1) Weigh tapioca starch, calcium carbonate, chitosan, polyvinyl chloride, glycerin and bamboo fiber raw materials, put the raw materials into a stirring tank, stir and mix evenly to obtain a mixture, and set aside;

[0054] Further, during the stirring process, the temperature is kept at 140° C., the stirring speed is 70 r / min, and the stirring time is 30 minutes, so as to increase the mixing effect of the raw materials and ensure that the raw materials are evenly mixed.

[0055] (2) Dissolving polyvinyl alcohol solids in water to form a polyvi...

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PUM

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Abstract

The invention relates to the technical field of plastic packaging bags, and discloses a degradable plastic packaging bag, which is prepared from the following ingredients in parts by mass: 25 to 35 parts of polyvinyl alcohol, 15 to 25 parts of cassava starch, 10 to 15 parts of calcium carbonate, 5 to 10 parts of chitosan, 10 to 16 parts of polyvinyl chloride, 8 to 10 parts of antioxidants, 10 to 15 parts of glycerol, 5 to 15 parts of bamboo fibers and 2 to 4 parts of lubricating agents. The plastic packaging bag provided by the invention has the advantage of degradability, so that the plastic packaging bag can be degraded by natural microorganisms in a natural environment, pollution to the environment is effectively avoided, the plastic packaging bag has good ductility, high structural strength and a good bearing effect, and the problems that an existing plastic bag is extremely low in recovery value, low in cost and the like are solved. The plastic packaging bag solves the problems that the plastic packaging bag is not easy to degrade by natural microorganisms, is not separated for a long time in a natural environment and can cause great harm to the environment, so that the plastic packaging bag has a good use prospect.

Description

technical field [0001] The invention relates to the technical field of plastic packaging bags, in particular to a degradable plastic packaging bag. Background technique [0002] Plastic bags can be divided into many types according to their uses, such as shopping bags, packaging bags, garbage bags, document bags, fresh-keeping bags and so on. In particular, plastic packaging bags are widely used with the popularity of online shopping, and the resulting environmental pollution has attracted more and more attention. The vast majority of plastic bags are made of non-degradable materials. When such plastic bags are buried in the ground, they will take about 200 years to decompose and seriously pollute the soil; if they are incinerated, they will produce harmful smoke and toxic gas, polluting the environment. It can be seen that while plastic bags bring convenience to humans, they also bring white pollution to humans, which is also an urgent problem to be solved in today's soci...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L3/02C08L5/08C08L27/06C08L1/02C08K3/26C08K5/053C08J5/18
CPCC08J5/18C08J2329/04C08J2403/02C08J2405/08C08J2427/06C08J2401/02C08K5/053C08K2003/265
Inventor 张运才
Owner 张运才
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