What is Blow Molding?

Also called hollow blow molding, a rapidly developing plastic processing method. The blow molding process was used to produce low-density polyethylene vials during World War II. In the late 1950s, with the birth of high-density polyethylene and the development of blow molding machines, blow molding technology was widely used. The volume of the hollow container can reach thousands of liters, and some production has been controlled by computer. Plastics suitable for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester, etc. The hollow containers obtained are widely used as industrial packaging containers. According to the parison manufacturing method, blow molding can be divided into extrusion blow molding and injection blow molding. Newly developed are multilayer blow molding and stretch blow molding.

Blow molding

Pinyin: chui su

English: blow molding

Extrusion blow molding is a method of making hollow thermoplastic parts. Well-known blow molding objects are bottles, barrels, cans, boxes and all containers for packaging food, beverages, cosmetics, medicines and daily necessities. Large blow-molded containers are commonly used for packaging of chemical products, lubricants and bulk materials. Other blow molded products include balls, bellows and toys. For the automotive industry, fuel tanks, car shock absorbers, seat backs, center brackets, and armrest and headrest overlays are blow molded. For machinery and furniture manufacturing, blow molded parts are housings, door frames, racks, earthenware pots or boxes with an open face.

Generally common are people's daily necessities such as bottles, jars, baby products, sporting goods, etc.