Environmentally friendly plastic bags are short for various types of biodegradable plastic bags. With the development of technology, various materials that can replace traditional PE plastics appear, including PLA, PHAs, PBA, PBS and other polymer materials. Can replace traditional PE plastic bags. Environmental protection plastic bags have been widely used: supermarket shopping bags, roll-to-roll fresh-keeping bags, and mulch films have been widely used in China. Jilin Province has adopted PLA (polylactic acid) instead of traditional plastic bags, and achieved good results. In Sanya City, Hainan Province, starch-based biodegradable plastic bags have also entered large-scale use in industries such as supermarkets and hotels.
Generally speaking, there are no completely environmentally friendly plastic bags. Only some plastic bags can be easily degraded after adding some ingredients. That is, biodegradable plastic. Add a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) in the production process of plastic packaging products to reduce the stability of plastic packaging and make it easier to degrade in the natural environment . There are 19 units that develop or produce biodegradable plastics in Beijing. Tests have shown that most degradable plastics begin to become thinner, lose weight, and lose strength after being exposed to the general environment for 3 months, and gradually break into pieces. If these fragments are buried in garbage or soil, the degradation effect is not obvious. There are four shortcomings in the use of degradable plastics: one is to consume more food; the other is that the use of degradable plastic products still cannot completely eliminate “visual pollution”; the third is that due to technical reasons, the use of degradable plastic products cannot completely solve the environmental impact “Potential hazards”; Fourth, degradable plastics are difficult to recycle because they contain special additives.
In fact, the most environmentally friendly thing is to use plastic bags or fixed plastic bags to reduce the amount of use. At the same time, it can be recycled by the government to reduce environmental pollution.
Post time: Oct-08-2021