There are 2 groups of biodegradable bags:
Bio-degradable bags with 1-2% bio-degradable additives:
The biodegradable additives such as D2W, EPI, P-life, Biocom, Reverte, Oxium will be mixed with HDPE/ LDPE materials to make bags. After a certain time, the bags will be decomposed and turned into environmentally friendly substances.
All kinds of plastic bags like t shirt plastic bags, die cut plastic bags, solf loop plastic bags, bags on roll… can be used with the biodegradable additives
Degradable time: 6 months – 2 years
Pros: general purpose, easy to manufacture; cheap price; good production time and capacity.
Compostable bags/ 100% bio-degradable bags:
The bags are made from 100% natural powdered cellulose as corn, tapioca, wheat.
Degradable time: 3-6 months.
Using the 100% biodegradable bags is regarded as an environmental-friendly solution. However, not only does it take much cost to produce but it also gets only a half capacity of plastic bag. Besides, raw material cost is very high, about 2800-4500usd/ton and price of completed bags is about 3500-6000usd/ton.[:]