Daily environment-friendly degradable plastic thin film

Abstract

The invention relates to daily environment-friendly degradable plastic thin film. The daily environment-friendly degradable plastic thin film is prepared from, by weight percentage, 50-80% of thin-film-grade polyethylene and 20-50% of thin-film-grade polylactic acid. The polylactic acid is an ideal fully-degradable plastic, and the thin-film-grade polylactic acid and the thin-film-grade polyethylene can be blended to prepare the degradable plastic film with different degradation rates. The daily environment-friendly degradable plastic thin film can be produced by using a common plastic film blowing machine, during production, thin-film-grade polyethylene particles and the thin-film-grade polylactic acid can be uniformly mixed, and the degradable plastic thin film can be formed through blowing of the plastic film blowing machine. The components of the thin film are the polylactic acid and thin-film-grade polyethylene plastics, and since the polylactic acid can be automatically decomposed at the ambient temperature higher than 55 DEG C or under the function of rich oxygen and microorganisms, the degradation of the discarded polylactic acid thin film in the discarded environment can be ensured.

Description

technical field [0001] The invention relates to a daily-use environment-friendly degradable plastic 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 degradable plastic Thin films play a positive role in improving the envir...

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