Degradable disposable plastic film and preparation method thereof

Abstract

The invention discloses a degradable disposable plastic film. The plastic film comprises a bottom layer and a top layer; the bottom layer is prepared from, by weight, 45-55 parts of polyethylene terephthalate, 25-32 parts of polyethylene, 15-20 parts of maleic anhydride grafted polyethylene, 5-9 parts of lignocellulose, 6-9 parts of hemp fibers, 3.4-4.5 parts of a plasticizer and 16-22 parts of afiller; and the top layer is prepared from, by weight, 22-25 parts of polyethylene terephthalate, 50-55 parts of polyethylene, 14-17 parts of the maleic anhydride grafted polyethylene, 10-15 parts offluorinated plant fibers, 8-12 parts of starch, 5-7 parts of nanometer titanium dioxide, 3.5-4.8 parts of the plasticizer and 12-16 parts of the filler. The degradable disposable plastic film of the invention has the advantages of high degradation rate, high tensile strength, large elongation at break, and good mechanical properties, is not prone tobe damaged during use, and has good user experiences.

Description

technical field [0001] The invention relates to the field of plastic film products, in particular to a degradable disposable plastic film and a manufacturing method thereof. Background technique [0002] White Pollution (White Pollution) is an image term for the phenomenon of waste plastics polluting the environment. It refers to packaging bags made of polystyrene, polypropylene, polyvinyl chloride and other high molecular Plastic products such as bottles are discarded as solid waste after use. Due to random littering, it is difficult to degrade and process, causing pollution to the ecological environment and landscape. [0003] In recent years, with the improvement of people's awareness of environmental protection, the problem of "white pollution" has become a hot spot of social concern. Using biodegradable materials to make packaging films is undoubtedly an effective way to solve this problem. Currently, biodegradable materials include polysaccharides such as cellulose, ...

AI Technical Summary

Problems solved by technology

[0005] 1. The degradable disposable plastic film made of polylactic acid or other fully degradable polyester, although the degradation rate is fast and the degree of degradation is high, the tensile strength and elongation at break of the degradable disposable plastic film products , poor mechanical properties such as puncture resistance, poor heat resistance, and high preparation costs, resulting in the inability to vigorously promote their use;

[0006] 2. With PET, PP, PE and other resins as the matrix, the degradable disposable plastic film products prepared by adding degradable material components have a slow degradation rate, and due to the large amount of biodegradable components including polysaccharides such as cellulose, etc. , leading to a great decrease in mechanical properties such as tensile strength, elongation at break, and puncture resistance, and poor heat resistance, easy to damage during use, and poor user experience

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