Degradable plastic refers to a plastic material that can be biodegraded under specific environmental conditions after use while meeting its performance and safety indicators. According to the degradation mechanism, it can be divided into biodegradable plastics, photodegradable plastics and chemically degradable plastics. wait. At present, biodegradable plastics are mainly circulated in the market, such as starch-based and polylactic acid, which are fully degradable plastic products. Their biggest feature is that they can be completely decomposed into water and carbon dioxide under the action of microorganisms. Realize the true sense of green environmental protection. However, due to the particularity of raw materials, the performance of biodegradable plastic shopping bags is significantly different from that of ordinary plastic shopping bags:

1. The thickness of the biodegradable plastic shopping bag is not less than 0.015mm;

2. The sealing strength of the bottom of the shopping bag has different limit values according to the different nominal load-bearing, the minimum is only 2N/15mm;

3. The impact of falling darts varies according to the nominal thickness, and the quality of the falling darts is different, the minimum is only 20g;

4. The biodegradation rate of the material is not less than 60%.