China Plastics Network tells about the types of degradable plastic bags

Degradable plastic bags are human- and environmental-friendly items made of plant straw, etc. Different from the three synthetic plastic bags, after being discarded, they can be decomposed by themselves under the action of biological environment, whether for humans or the environment. It is harmless and belongs to green packaging. Today, China Plastics Industry website - Jiuzhi Plastics Network will tell you about the types of degradable plastic bags, as follows:

First, degradable plastics are generally divided into four categories:

1, photodegradable plastic

The photosensitizer is incorporated into the plastic to gradually decompose the plastic under sunlight. It belongs to the earlier generation of degradable plastics. The disadvantage is that the degradation time is difficult to predict due to sunshine and climate change, and thus the degradation time cannot be controlled.

2, biodegradable plastic

A plastic that can be completely decomposed into a low molecular compound by the action of microorganisms. The utility model has the advantages of convenient storage and transportation, as long as it is kept dry, does not need to be protected from light, and has wide application range, and can be used not only for agricultural mulch films and packaging bags, but also widely used in the medical field.

3. Light/biodegradation

A type of plastic that combines photodegradation with microbes, which simultaneously has the characteristics of light and microbial degradation of plastics.

4, water degradation plastic

Adding water-absorbing substances to plastics can be dissolved after being discarded in water. It is mainly used in medical and sanitary appliances (such as medical gloves) for easy destruction and disinfection. With the development of modern biotechnology, biodegradable plastics have received more and more attention and have become a new generation of research and development hotspots.

Second, there are two types of degradable plastic bags on the market.

One is a partially degradable plastic bag, and its appearance is somewhat similar to that of the previous plastic bag. When it is smashed, it feels a little rustling and can only degrade 60-70%. It takes a long time. It is more commonly used now, and the price is close. Ordinary PE material;

The other is corn material, the color is a little pale yellow, the hand feels very soft, but it is not used in large quantities at present, the price is quite expensive, a common medium-sized vest bag, the price is about 1.00 yuan, so it can not be consumed by the majority Accepted by the person.

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