According to the plastic recycling Committee of China Plastics Association, I used 1 billion plastic bags to buy vegetables every day The consumption of other plastic bags is more than 2 billion a day

Plastic bags not only bring convenience to people's life, but also cause some environmental problems

Material of plastic bag:

1. Low pressure polyethylene plastic bag PE

The earliest and most commonly used plastic bag in China is made of PE film It is characterized by low cost, good waterproof, but poor gas resistance use

Wide range of routes: A. garbage bag and strain bag; B. Convenience bag, shopping bag, handbag, vest bag; C. Fresh keeping bag; D. Woven bag inner bag

2. High pressure polyethylene plastic bag PEF

High pressure polyethylene has low density and low melting temperature, which is mostly used for film products; A. Food packaging: cakes, candy, fried goods, biscuits, milk powder, salt, tea, etc; B. Fiber packaging: shirts, clothing, needle cotton products, chemical fiber products; C. Packaging of daily chemical products

3. Polypropylene plastic bag

Polypropylene is non-toxic, tasteless, low density, strength, stiffness, hardness and heat resistance are better than low-pressure polyethylene, and can be used at about 100 ℃ Common acid and alkali organic solvents have little effect on it Uses: A. mainly used for packaging textiles, knitted cotton products, clothing, shirts, etc B. Packaged food can be used for microwave heating

4. PVC plastic bag

PVC is one of the largest plastic products in the world. It is cheap and widely used PVC resin is white or light yellow powder, and can be made into a variety of hard, soft and transparent products by adding an appropriate amount of plasticizer Can be used as: A, gift bag; B. Want bags, needle cotton products bags, cosmetics bags; C. Document bag, data bag

Attention! PVC plastic bags will decompose hydrogen chloride gas at high temperature, such as about 50 ℃, which is harmful to human body Among them, the anti-aging agent containing lead salt will make the lead molecules diffuse into the oil when it meets oily foods such as fried dough sticks, fried cakes, fried fish, cooked meat, cakes and snacks Therefore, PVC plastic bags cannot be used to contain food

5. Environmentally friendly plastic bags

Definition: plastic bag conforming to national standard GB / T21661-2008 Environmentally friendly plastic bags include recycled plastic bags and new plastic bags

The plastic bag with masterbatch added during the production of plastic bag is called degradable plastic bag. After 90, the degradable plastic bag can be decomposed automatically under certain conditions