Advantages: In terms of environmental protection, most of the non woven felt sheet used are made of polypropylene, while plastic bags are made of polyethylene. Although the names of the two substances are similar, the chemical structure of the two substances is very different. The chemical molecular structure of polyethylene is very stable and difficult to degrade, so it takes 300 years to decompose the plastic bag. But the chemical structure of polypropylene is not firm, the molecular chain can be broken easily, so it can be effectively degraded, and in the non-toxic form into the next environmental cycle, a non-woven shopping bag can be completely decomposed in 90 days. And non-woven shopping bags can be reused more than 10 times, abandoned After the pollution to the environment is only 10% of the plastic bag.
Shortcomings:
1) compared with textile cloth, the strength and durability are poor. 2) cannot be washed like any other cloth.
3) the color felt is arranged in a certain direction, so it is easy to split from the right angle and so on. Therefore, the improvement of production methods is mainly focused on the improvement of preventing split.
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