Shanghai recruits blow molding technicians.

Toxic, harmful to the body, plastic is easy to burn, and when it burns, it will produce toxic gases. For example, when polystyrene is burned, toluene will be produced. Inhalation of a small amount of this substance can cause blindness, vomiting and other symptoms. The combustion of PVC will also produce toxic gas hydrogen chloride. In addition to burning, it is a high temperature environment, which will lead to the decomposition of toxic components in plastics, which is not good for the body for a long time.

Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. During World War II, the blow molding process began to be used to produce low-density polyethylene bottles. In the late 1950s, with the birth of high density polyethylene and the development of blow molding machine, blow molding technology was widely used. The volume of hollow containers can reach thousands of liters, and some production has been controlled by computer. Plastics suitable for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester and so on. The obtained hollow containers are widely used as industrial packaging containers. Blow molding can be divided into extrusion blow molding and injection blow molding according to parison making methods, and the newly developed ones are multi-layer blow molding and stretch blow molding.