Plastic bags are divided into two categories, one is biodegradable shopping bags, which is an environmentally friendly shopping bag that will not cause any pollution or harm to the environment; the other is non-degradable shopping bags, which are ordinary shopping bags. Since non-degradable plastic bags cause a lot of harm to the environment, people now prefer to use degradable shopping bags. And as the country pays more and more attention to environmental protection, the plastic bags that are used casually every day have caused serious problems and burdens to the environment. The demand for degradable plastic bags will continue to increase in the future. So do you know what are biodegradable plastic shopping bags?
Degradable plastics, also known as environmentally degradable plastics, refer to plastics that are added to a certain amount of additives during the production process to reduce their stability and then be easier to degrade in the natural environment. With the development of science and technology, various materials that can replace traditional PE plastics have emerged, including PLA, PHAs, PBA, PBS and other polymer materials, which can replace traditional PE plastic bags. Degradable environmentally friendly plastic bags are currently widely used: the main application areas are agricultural mulch, various plastic packaging bags, garbage bags, shopping bags in shopping malls, and disposable tableware.
Biodegradable plastics refer to a class of plastics that are degraded by the action of naturally occurring microorganisms such as bacteria, molds (fungi) and algae. The ideal biodegradable plastic is a polymer material that has excellent performance, can be completely decomposed by environmental microorganisms after being discarded, and is finally inorganicized to become an integral part of the carbon cycle in nature. "Paper" is a typical biodegradable material, while "synthetic plastic" is a typical polymer material. Therefore, biodegradable plastics are polymer materials that have the properties of both "paper" and "synthetic plastics". Biodegradable plastics can be divided into two types: completely biodegradable plastics and destructive biodegradable plastics.
Destructive biodegradable plastics: Destructive biodegradable plastics currently mainly include starch-modified polyethylene PE, polypropylene PP, polyvinyl chloride PVC, polystyrene PS, etc.
Completely biodegradable plastics: Completely biodegradable plastics are mainly made from natural polymers (such as starch, cellulose, chitin) or agricultural by-products through microbial fermentation or synthesis of biodegradable polymers, such as thermoplastic starch plastics, aliphatic polyester, polylactic acid, starch/polyvinyl alcohol.
1. Raw materials of bio shopping bags
Degradable plastic bags are also called biodegradable shopping bags. They are made of materials extracted from plants such as plant starch and corn flour. These raw materials will not cause any harm to the human body and the environment.
The use of degradable bio-shopping bags can be disposed of in landfills. It only takes a period of time for the shopping bags to be degraded into biological particles and then absorbed by the soil. Degradable plastic bags not only will not have any impact on the environment, but can also be used as fertilizers for plants and crops to promote plant growth.
Therefore, the use of degradable shopping bags is now popular, and the use of non-degradable shopping bags is slowly decreasing. Non-degradable shopping bags will cause great harm to human health and the ecological environment.
2. The development prospect of bio shopping bags
The whole world is facing the same problem, so the market prospect of biodegradable plastic bag products is not only limited to domestic, the market is so broad that it covers almost every corner of the earth. From the overall trend, biodegradable plastic bags have gradually become a development trend. The increase in the price of plastic bags will prompt some people to use cloth bags for shopping. From this aspect, it is beneficial to the protection of the environment!