1. Blow molding, also known as hollow blow molding, is a rapid plastic granulation method. The blow molding process was initially used to produce low density polyethylene vials during World War II. In the middle and late 60s, with the advent of polyethylene plastics and the development trend of blow molding machines, blow molding technology was used. The volume of hollow vessels has reached more than a thousand liters, and some manufacturers have selected motion control systems. Blow-molded plastics are high-pressure polyethylene, polyethylene, polypropylene, polyester, etc., personal income when hollow containers are commonly used as industrial packaging plastic packaging containers. According to the parison approach, blow molding can be divided into extrusion blow molding and injection blow molding, and new development trends include double-layer blow molding and stretch blow molding.
2. Extrusion blow molding is the way in which such hollow thermoset plastics are produced. The well-known blow molding constructs are bottles, barrels, cans, boxes and all utensils for packaging foods, drinks, skin care products, medicines and household items. Large blow molding vessels are generally used in the packaging of chemical raw materials, lubricating fluids and raw materials. Other blow molded products also have balls, metal bellows and small toys. For the mechanical manufacturing industry, fuel tanks, car shock absorbers, seat backs, management center fixed brackets, and their guardrails and headrest soil layers are blow molded. For machinery and furniture manufacturing, blow molding parts, organic shells, door frames, frames, pottery or boxes with an open face.