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Biodegradable garbage bag and preparation method thereof

A biodegradable garbage bag technology, applied in the field of biodegradable garbage bags and its preparation, can solve the problems of destroying ecological balance, occupying large resources, and difficult disposal, and achieves the effects of low cost, high production efficiency, and easy availability of raw materials

Inactive Publication Date: 2020-08-18
南京瑞鑫环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially waste such as plastics, disposable lunch boxes, etc., due to their non-degradable characteristics, their disposal becomes difficult
Now, it is generally disposed of by landfill, but this kind of material is difficult to degrade and be absorbed by the soil in the natural state, which requires a lot of resources for disposal on the one hand, and destroys the ecological balance on the other hand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] According to the preparation method of the biodegradable garbage bag of the present invention, the method comprises the following steps:

[0034] (1) Feed polylactic acid, heavy calcium carbonate, PHA, and starch into a high-speed mixer according to the ratio and mix at high speed for 10-20 minutes to obtain the first mixed material;

[0035] (2) Add reinforcing agent and antioxidant to the above-mentioned first mixed material, and mix again at high speed in a high-speed mixer for 25~30 minutes to obtain the second mixed material;

[0036] (3) Add the above-mentioned second mixed material into the film blowing machine, heat it to 190~210°C, and blow out the material film after 30~50 minutes;

[0037] (4) Press the edge after the material film is cooled, and then put it into the bag making machine to obtain the biodegradable garbage bags of the required specifications.

[0038] Specific implementations of preparing biodegradable garbage bags according to the above-menti...

Embodiment 1

[0040]Feed 55 parts of polylactic acid, 15 parts of heavy calcium carbonate, 4 parts of PHA, and 15 parts of cornstarch into a high-speed mixer and mix at high speed for 15 minutes to obtain the first mixed material. Add 2 parts of enhancer (1 part of agar, 1 part of gelatin) and 9 parts of antioxidant (4.14 parts of rosin, 2.34 parts of glycyrrhetinic acid, 2.52 parts of polysuccinate) to the above-mentioned first mixed material, and again Mix at high speed in a high-speed mixer for 25 minutes to obtain the second mixed material. Add the above-mentioned second mixed material into the film blowing machine, heat it to 200°C, and blow out the material film after 40 minutes; after the material film is cooled, press the edge, and then add it to the bag making machine to obtain the biodegradable garbage bag of the required specification .

Embodiment 2

[0042] Feed 60 parts of polylactic acid, 10 parts of heavy calcium carbonate, 2 parts of PHA, and 12 parts of acetate starch into a high-speed mixer and mix at high speed for 15 minutes to obtain the first mixed material. Add 2 parts of enhancer (1 part of agar, 1 part of gelatin) and 14 parts of antioxidant (6.44 parts of rosin, 3.64 parts of glycyrrhetinic acid, 3.92 parts of polysuccinate) to the above-mentioned first mixed material, and again Mix at high speed in a high-speed mixer for 25 minutes to obtain the second mixed material. Add the above-mentioned second mixed material into the film blowing machine, heat it to 190°C, and blow out the material film after 40 minutes; after the material film is cooled, press the edge, and then add it to the bag making machine to obtain the biodegradable garbage bag of the required specification .

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PUM

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Abstract

The invention discloses a biodegradable garbage bag, which comprises the following components in percentage by weight: 50-60% of polylactic acid, 2-6% of PHA, 10-15% of starch, 10-15% of ground calcium carbonate, 1-2% of a reinforcing agent and the balance of an antioxidant. The invention also discloses a preparation method of the biodegradable garbage bag. The preparation method comprises the following steps: (1) proportionally feeding ground calcium carbonate, PHA and starch into a high-speed mixer, and carrying out high-speed mixing for 10-20 minutes to obtain a first mixed material; (2) adding a reinforcing agent and an antioxidant into the first mixed material, and performing high-speed mixing in the high-speed mixer for 25-30 minutes to obtain a second mixed material; (3) adding thesecond mixed material into a film blowing machine, heating to 190-210 DEG C, and blowing out a material film after 30-50 minutes; and (4) pressing the edges after the material film is cooled, and thenadding the material film into a bag making machine to obtain the garbage bag with a needed specification. The biodegradable garbage bag is high in strength, good in toughness and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of biodegradable materials, and in particular relates to a biodegradable garbage bag and a preparation method thereof. Background technique [0002] With the acceleration of urbanization in our country, the increasingly serious pollution has been paid more and more attention by human beings. Especially wastes such as plastics, disposable lunch boxes, etc., are difficult to deal with due to their refractory characteristics. At present, it is generally disposed of through landfill, but such materials are difficult to degrade and be absorbed by the soil in the natural state, which requires a large amount of resources for disposal on the one hand, and destroys the ecological balance on the other hand. [0003] Therefore, the national policy requires that industrial production needs to be green and environmentally friendly, and the products produced also need to be green and environmentally friendly. Along with...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L3/02C08L67/02C08L93/04C08L5/12C08L89/00C08L3/06C08L3/08C08L5/00C08K5/09C08K3/26C08J5/18
CPCC08J5/18C08J2367/04C08J2467/04C08J2403/02C08J2467/02C08J2493/04C08J2405/12C08J2489/00C08J2403/06C08J2403/08C08J2405/00C08K5/09C08K3/26
Inventor 王庭慰陈昌平
Owner 南京瑞鑫环保科技有限公司