The plastic varieties used for hollow blow molding include polyethylene, polyvinyl chloride, polypropylene, polystyrene, linear polyester, polycarbonate, polyamide, acetate fiber and polyacetal resin.
1, high density polyethylene consumption of the first, it is widely used in food, chemical and processing liquid packaging.High molecular weight polyethylene is suitable for the manufacture of large fuel rub tank and barrel, etc.
2, PVC because of its good transparency and good density, so in cosmetics and detergent packaging has been widely used.With the development of non-toxic polyvinyl chloride resins and additives, and the development of stretch blow molding technology, polyvinyl chloride containers in food packaging in the amount of rapidly added, and has been used in beer and other beverages containing carbon dioxide gas packaging;
3, linear polyester material is a new kind of material into the category of hollow blow molding in recent years, because of its products have the appearance of the gloss, good transparency, high mechanical strength and container goods is saved, waste matured burn treatment without environmental pollution, etc advantages, so in terms of bottles to develop quickly, the pressure using the most common plastic food containers.
4. The application amount of polypropylene is also increased year by year due to the modification of its resin and the progress of processing technology.