Generally speaking, there are no completely environment […]
Generally speaking, there are no completely environmentally friendly plastic bags, only some plastic bags can be easily degraded by adding some ingredients. That's degradable plastics. A certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) are added to the production process of plastic packaging products, which can reduce the stability of plastic packaging and make it easier to degrade in the natural environment.
Experiments show that most degradable plastics begin to thinn, lose weight, decrease strength and gradually break into fragments after 3 months exposure in general environment. If the debris is buried in garbage or soil, the degradation effect is not obvious. There are four shortcomings in using degradable plastics: firstly, more food is consumed; secondly, the use of degradable plastics products can not be completely eliminated; thirdly, due to technical reasons, the use of degradable plastics products can not completely solve the "potential harm" to the environment; fourthly, it is difficult to recycle degradable plastics because of the special additives. Use.