In contemporary life, plastic bags have become an integral part of our daily life. They are widely used in supermarkets, shops and other retail establishments because they are cheap, convenient, durable and easy to carry. However, these plastic bags have a huge negative impact on the environment during production, use and disposal. In order to reduce the negative impact on the environment, many countries have begun to restrict the use of plastic bags, but the demand for plastic bags is still high, so efficient production processes are required.

Plastic bag raw material

The raw material of plastic is petroleum, which is refined to obtain polyethylene, polypropylene, polystyrene, etc., and then plastics are produced from these refined substances. Polyethylene, polypropylene, and other by-products that can be used to make plastics are all polymer compounds, but plastics are processed into plastic products after they are catalyzed.

How are plastic bags made?

Plastic bags are usually made of polyethylene (PE), and the production process is mainly divided into the following steps:

Raw material preparation: Put PE granules or granule mixture into injection molding machine or extruder.

Melt processing: PE pellets are melted by the action of high temperature and pressure and form a continuous plastic pipe in a mold or die.

Cutting and sealing: Plastic pipes are cut into appropriate lengths of plastic sheets and sealed at both ends.

Printing and bagging: Plastic bags can be printed on demand, folded, stacked and packaged.

Modern craftsmanship, usually produced using automated equipment. So, it can use plastic film blowing machine, flexographic printing machine,gravure printing machine, plastic bag making machine to produce plastic bags.

Various plastic bags

There are many types of plastic bags, according to different uses and types of plastic bags: roll bags, plastic vest bags, degradable plastic bags, environmental protection bags, square bottom bags, garbage bags, plastic garbage bags, plastic bag manufacturers custom, takeaway Packing bags, bath bags, four-finger bags, flat bags, plastic advertising bags, market bags, bulk weighing bags, plastic dustproof bags, high quality, and low price, good service, widely used in supermarkets, hospitals, hotels, and other enterprises and institutions.