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Characteristics of blow molding machine

The advantage of the blow molding machine is that the plastic container processed by the blow molding machine has a high thickness, corrosion resistance and wear resistance, which can replace a part of the ceramic container, and the container of the blow molding product is lower in cost, low in processing difficulty and high in efficiency

Blow molding machine is a plastic processing machine. After the liquid plastic is sprayed out, the wind blowing out of the machine is used to blow the plastic body to a certain shape of the mold cavity, so as to make products, this machine is called blow molding machine. The plastic is melted and quantitatively extruded in the screw extruder, and then formed through the mouth film, and then the wind ring is blown and cooled, and then the tractor pulls at a certain speed, and the winding machine winds it into a roll.

blow molding, also known as hollow blowing, is a rapidly developing plastic processing method. The tubular plastic billet obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while it is hot (or heated to a softened state), and compressed air is passed into the billet immediately after the mold is closed, so that the plastic billet is blown and close to the inner wall of the mold, and various hollow products are obtained after cooling and demoulding. The manufacturing process of blow molded film is very similar in principle to that of blow molded hollow products, but it does not use molds, and the molding process of blow molded film is usually included in the extrusion from the perspective of plastic processing technology classification. The blow molding process began to be 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 has been widely used. The volume of hollow containers can reach thousands of liters, and some production has been controlled by computers. The plastics suitable for blow molding are polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the resulting empty containers are widely used as industrial packaging containers.

According to the production method of billet, blow molding can be divided into extrusion blow molding and injection blow molding, and the newly developed multi-layer blow molding and tensile blow molding.