What materials are plastic bags made of now? The difference between fully biodegradable plastic bags and ordinary plastic bags
2022-04-19
Now that the speed limit for plastic bags has come down, ordinary small shops or roadside stores usually use ordinary plastic bags, such as PP and PE, which are generally difficult to degrade or non degradable. Secondly, biodegradable plastics are added to the original plastic particles, but adding a degradant is not very useful. The decomposed plastic molecules still have an impact on the environment and other factors.
However, some larger supermarkets and shopping malls use fully degradable bags made from modified materials such as pbat, pla, and corn starch. These bags are fully degradable and have toughness comparable to ordinary plastic bags. It will completely degrade into carbon dioxide and water after about 3 months in the soil, and can be stored for 9 to 12 months in a dry warehouse.
The difference between fully biodegradable plastic bags and ordinary plastic bags
1. Different materials: Fully biodegradable plastic bags (also known as environmentally friendly plastic bags) are made of polymer materials such as PLA, PHAs, PBA, PBS, etc. The traditional non degradable ordinary plastic bags are made of other plastic materials such as PE.
2. Different production standards: Fully biodegradable plastic bags need to comply with the national standard GB/T21661-2008 and meet environmental standards. Traditional non degradable ordinary plastic bags do not need to comply with this standard.
3. Different decomposition times: Fully biodegradable plastic bags can generally decompose within one year, while Olympic environmentally friendly plastic bags can even start to decompose 72 days after disposal. However, non degradable ordinary traditional plastic bags require 200 years to degrade.
Advantages of using fully biodegradable plastic bags
1. Environmental protection: Using fully biodegradable plastic bags can greatly reduce the problem of white pollution caused by the inability of traditional ordinary plastic bags to decompose.
2. Excellent performance: Fully biodegradable plastic bags use starch as the main raw material, with better degradation ability than other materials, longer lifespan than paper bags, and lower cost than paper bags.
3. Exquisite and versatile: Fully biodegradable plastic bags have the same functions as ordinary plastic bags, except for their different ingredients and materials. They can be exquisitely printed, of moderate size, and can package numerous products.
4. Recycling: Fully biodegradable plastic bags have the characteristics of softness, wear resistance, foldability, and good texture, with a long recycling period
