Environmentally-friendly degradation film

Abstract

The invention relates to an environmentally-friendly degradation film, which comprises 50-80 wt% of film-grade polyethylene and 20-50 wt% of film-grade polylactic acid. According to the present invention, polylactic acid is an ideal fully-degradable plastic, such that the degradable plastic films with different degradation rates can be prepared by blending the film-grade polylactic acid and the film-grade polyethylene; the environmentally-friendly degradation film can be produced by using the common plastic film blowing machine, wherein the film-grade polylactic acid and the film-grade polyethylene are uniformly mixed during the production, and the degradable plastic film can be blown through the plastic film blowing machine; and the environmentally-friendly degradation film comprises thepolylactic acid and the film-grade polyethylene plastic, and the polylactic acid can be automatically decomposed at the ambient temperature of higher than 55 DEG C or under the action of rich oxygen and microorganisms, such that the waste polylactic acid film can be degraded in the waste environment.

Description

technical field [0001] The invention relates to an environmentally friendly degradable film, in particular to a composition of an environmentally friendly degradable film. Background technique [0002] The plastic bag made of plastic film is light, thin, impermeable, strong, and low in cost. It is a good packaging material. 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 films to the environment, some degradable plastic films have been developed. Degradable plastic film is a film composed of film-grade plastics and components that can cause plastic degradation, such as starch, calcium carbonate, etc. This degradable plastic film is an additive degradable plastic film, additive degradab...

AI Technical Summary

Problems solved by technology

However, the processing performance of this degradable plastic film is not good, and the physical properties and appearance of the plastic film produced are poor; in addition, the degradation of this degradable plastic film requires certain fixed conditions, and the environment after the plastic film 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 this plastic film. 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 film that can guarantee degradation in the environment after disposal