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[Chemical Knowledge]：What are plastic bags made of? Learn about its production process

Read： 222 Time：14months ago Source：Transform the World with Simplicity

Plastic bags are widely used in life and industrial fields, it is light, convenient, low-cost, become one of the necessities of life. However, the impact of plastic bags on the environment is also obvious. It is non-degradable and causes great damage to the environment. Therefore, we need to understand the manufacturing process of plastic bags in order to find more environmentally friendly alternatives.

let us understand the raw material of plastic bags-plastic. Plastics are synthetic materials made of a mixture of chemicals, the main components are polyethylene and polyvinyl chloride. Polyethylene is divided into low-density polyethylene and high-density polyethylene, of which the former is used to produce white and transparent plastic bags, and the latter is used for the production of black and colored plastic bags. The production process of

plastic bags includes four main links: preparation of raw materials, bag making, printing and packaging. The plastic pellets are melted and injected into the mold to make a plastic bag. Next, the plastic bag for printing, common monochrome printing, two-color printing, full-color printing and other technologies. Finally, the plastic bag for packaging and drying, to be fully dry after packaging and transportation. Although the manufacturing process of

plastic bags is simple, its harm cannot be ignored. Because it is not recyclable, few people will dispose of it properly, and a large number of plastic bags will be discarded at will, thus polluting the environment. In this regard, we need to actively promote environmentally friendly alternatives. Alternative environmentally friendly products include cloth bags, paper bags, degradable plastic bags, etc. Most of these substitutes are made of natural raw materials, and after specific processing, the impact on the ecological environment can be greatly reduced. Although plastic bags

are a convenient item, they pose a great threat to the environment. We should look for alternative environmentally friendly products to reduce the use of plastic bags. At the same time, strengthen environmental education, improve personal awareness of environmental protection, so that our planet becomes more beautiful.

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