Easily degradable plastic bag

Abstract

The invention provides an easily degradable plastic bag. The easily degradable plastic bag comprises the following components in percentage by weight: 40-60% of film-grade polyethylene, 20-40% of film-grade polylactic acid, 1-15% of a plasticizer and 2-8% of glass fiber. The easily degradable plastic bag is produced by a plastic film blowing machine and has the advantages that the production process is simple, the plastic bag can be automatically degraded when the temperature of the environment is higher than 55 DEG C, and the abandoned polylactic acid films can be degraded in the abandoned environment.

Description

technical field [0001] The invention relates to a plastic bag, in particular to an easily degradable plastic bag. Background technique [0002] Plastic bags made of plastic bags are light, thin, impermeable, strong, and low in cost. They are good packaging materials. The use of plastic bags brings great convenience to people's lives, making plastic bags The amount of use is increasing, and the waste plastic bags after use are not easy to recycle and degrade. A large number of waste plastic bags have become a serious problem of current environmental pollution. In order to reduce the pollution of plastic bags to the environment, some degradable plastic bags have been developed. [0003] The existing degradable plastic bags are composed of film-grade plastics and components that can cause plastics to degrade, such as starch and calcium carbonate. This kind of degradable plastic bags is an additive-type degradable plastic bag. Plastic bags have played a positive role in improv...

AI Technical Summary

Problems solved by technology

However, the processing performance of this degradable plastic bag is not good, and the physical properties and appearance of the plastic bag produced are poor; in addition, the degradation of this degradable plastic bag requires certain fixed conditions, and the environment after the plastic bag is discarded, Either it is placed in a closed garbage disposal system, or it is exposed to the natural environment with unstable conditions. It is difficult to guarantee the fixed conditions required for the degradation of such plastic bags. In most cases, these degradable plastics, whether in In the waste treatment system or in the natural environment, it cannot be degraded well due to limited conditions

In the prior art, there is no degradable plastic bag that can guarantee degradation in the environment after being discarded