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Degradable square-bottom bag and preparation method thereof

A technology of square bottom bags and raw materials, applied in chemical instruments and methods, sustainable manufacturing/processing, sacks, etc., can solve problems such as harmful gases and environmental pollution

Active Publication Date: 2020-08-14
江门市玛斯特包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, since waste plastics will produce harmful gases to the human body during incineration or reprocessing and pollute the environment, it can be said that the disposal of waste plastics is still a major problem in environmental protection work.

Method used

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  • Degradable square-bottom bag and preparation method thereof
  • Degradable square-bottom bag and preparation method thereof
  • Degradable square-bottom bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A degradable square-bottom bag, including eight sides, is prepared by using the following raw materials in parts by weight: 10 parts, 30 parts of straw pulp fiber, 10 parts of purple sweet potato powder, 10 parts of cassava flour, 30 parts, 25 parts of chitosan and 70 parts of melaleuca bark fiber and 10 parts of scallop powder, oyster shell powder, conch shell powder, bagasse powder, polylactic acid; the main body of the degradable square bottom bag is mainly composed of the first layer of substrate from outside to inside , the second layer of base material and the third layer of base material are synthesized, the first layer of base material is kraft paper, and the second layer of base material and the third layer of base material are both PLA.

[0032] The preparation method of the degradable square bottom bag of the present embodiment comprises the following steps:

[0033] (S1) Weighing raw materials: weighing raw materials according to the ratio of parts by weight...

Embodiment 2

[0044]A degradable square-bottom bag, comprising eight sides, is prepared by using the following raw materials in parts by weight: 15 parts and 40 parts of straw pulp fiber, 30 parts of purple sweet potato powder, 18 parts of cassava flour, 45 parts, 35 parts of chitosan and Melaleuca bark fiber 120 parts and scallop powder, oyster shell powder, conch shell powder, bagasse powder, polylactic acid and 10 parts. The main body of the degradable square bottom bag is mainly composed of the first layer of substrate, the second layer of substrate and the third layer of substrate from the outside to the inside. The first layer of substrate is kraft paper, the second layer of substrate and the third layer of substrate All materials are PLA.

[0045] The preparation method of the degradable square bottom bag of the present embodiment comprises the following steps:

[0046] (S1) Weighing raw materials: weighing raw materials according to the ratio of parts by weight;

[0047] (S2) Prep...

Embodiment 3

[0057] A degradable square-bottom bag, including eight sides, prepared from the following raw materials in parts by weight: 20 parts and 60 parts of straw pulp fiber, 50 parts of purple sweet potato powder, 20 parts of cassava flour, 50 parts and 40 parts of chitosan And 150 parts of melaleuca bark fiber and 10 parts of scallop powder, oyster shell powder, conch shell powder, bagasse powder, polylactic acid and 10 parts. The main body of the degradable square bottom bag is mainly composed of the first layer of substrate, the second layer of substrate and the third layer of substrate from the outside to the inside. The first layer of substrate is kraft paper, the second layer of substrate and the third layer of substrate All materials are PLA.

[0058] The preparation method of the degradable square bottom bag of the present embodiment comprises the following steps:

[0059] (S1) Weighing raw materials: weighing raw materials according to the ratio of parts by weight;

[0060...

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Abstract

The invention discloses a degradable square-bottom bag which is characterized by being prepared from the following raw materials in parts by weight: 10-20 parts of wheat straw paper pulp fibers, 10-50parts of purple sweet potato powder, 10-20 parts of tapioca flour, 30-50 parts of chitosan and 70-150 parts of bark fibers of Melaleuca leucadendron L. The degradable square-bottom bag comprises eight edges, a main body of the degradable square-bottom bag is mainly composed of a first layer of base material, a second layer of base material and a third layer of base material from outside to inside, the first layer of base material is a kraft paper, and the second layer of base material and the third layer of base material are both PLA. The invention further provides a preparation method of thedegradable square-bottom bag. The preparation method comprises the steps of base material forming, gelatinized liquid material polycondensation and drying treatment. According to the invention, sincethe wheat straw, the purple sweet potato powder and the cassava can be digested by microorganisms, the damage to the environment is reduced. By the combination of bark fibers of Melaleuca leucadendron L., toughness can be improved. In addition, animal and plant powder in the raw materials can also be used as fertilizer after being degraded, and is beneficial to land.

Description

technical field [0001] The invention relates to the technical field of packaging, in particular to a degradable bag, especially a degradable square bottom bag and a preparation method thereof. Background technique [0002] Plastic bags are bags made of plastic (commonly used plastics include polyethylene, polypropylene, polyester, nylon, etc.) as the main raw material. They are indispensable items in people's daily life and are often used to hold other items. thing. It is widely used because of its cheap, extremely light weight, large capacity, and easy storage. China's annual output of plastics is 30 million tons, and its consumption is more than 6 million tons. If plastic bags are calculated based on 15% of the annual plastic waste, the annual plastic waste in the world is 15 million tons, and the annual plastic waste in China is more than 1 million tons, and the proportion of waste plastics in garbage accounts for 40%. More of the discarded plastic is buried in the gro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B29/06B32B29/08B32B27/10B32B29/00B32B33/00C08L97/02C08L5/08C08L3/02C08L67/04C08K3/26B65D65/40B29D7/01
CPCB32B27/36B32B29/06B32B29/08B32B27/10B32B29/002B32B33/00C08L97/02B65D65/40B29D7/01C08L2205/035C08L2205/025C08L2205/16C08K2003/265C08K2201/014B32B2307/716B32B2307/558B32B2250/03B32B2439/06C08L5/08C08L3/02C08L67/04C08K3/26Y02W90/10
Inventor 谢伟峰
Owner 江门市玛斯特包装有限公司
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