Folded polymer
The most common blow-molded plastic raw material is high-density polyethylene, and most milk bottles are made using this polymer. Other polyolefins are also often processed by blow molding. Depending on the application, styrene polymers, polyvinyl chloride, polyesters, polyurethanes, polycarbonates and other thermoplastics can also be used for blow molding.
Recently, engineering plastics have been widely accepted in the automotive industry. Material selection is based on mechanical strength, weather resistance, electrical properties, optical properties, and other properties.