Traditional PE film is difficult to completely recycle after use and discarded, and it is difficult
to degrade in the natural environment. A large amount of residual film has accumulated
after years of repeated use, and the residual film pollution will cause soil compaction.
Biodegradable film can be degraded by microorganisms under natural environmental
conditions, which will not cause heavy metal pollution and will not damage the land acidity
and alkalinity.
After microorganisms such as bacteria, fungi, and actinomycetes erode the plastic film, the
enzymes secreted by them make the water-soluble polymers decompose or oxidize and
degrade them into water-soluble fragments until they are finally decomposed into water
and carbon dioxide.