What does a blow molding machine do

A blow molding machine is a plastic processing machine. After the liquid plastic is sprayed out, the wind force blowing out of the machine is utilized to attach the plastic body to a certain shape of mold cavity, thus making a product. Specifically, a blow molding machine can process a variety of containers such as plastic buckets, plastic bottles, plastic toys, plastic jars, plastic drink straws, and so on. At present, the blow molding machine has been widely used to produce a variety of thin shell-shaped hollow products, chemical and daily packaging containers and children’s toys. First, the classification of blow molding machine blow molding can be basically divided into two categories: extrusion blow molding and injection blow molding. The main difference between the two is the preparation of the billet, while the blow molding process is basically the same. In the two molding methods developed on the basis of: extrusion – stretch – blow molding (referred to as extrusion – pull – blow), injection – stretch – blow molding (referred to as injection – pull – blow), as well as Injection – stretch – blow molding (referred to as injection – pull – blow), and multi-layer molding, etc.. Second, the use of blow molding machine for blow molding plastic varieties are polyethylene, polyvinyl chloride, polypropylene, polystyrene, linear polyester, polycarbonate, polyamide, cellulose acetate and polyacetal resin. 1, high-density polyethylene consumption accounted for the first, it is widely used in food, chemical and handling liquid packaging. High molecular weight polyethylene is suitable for the manufacture of large fuel tanks and drums etc. 2. Polyvinyl chloride is commonly used in the packaging of cosmetics and detergents because of its good transparency and airtightness. With the development of non-toxic polyvinyl chloride resin and additives, as well as the development of stretch blow molding technology, polyvinyl chloride containers in the rapid increase in the amount of food packaging, and has begun to be used for beer and other beverages containing carbon dioxide gas packaging. 3, linear polyester material is a new type of material that has entered the field of hollow blow molding in recent years. Because of its products have a glossy appearance, excellent transparency, high mechanical strength and containers within the better preservation of goods, waste incineration without polluting the environment and other aspects of the advantages of incineration, so the development of packaging bottles very quickly, especially in the pressure-resistant plastic food containers in the most widely used. 4, polypropylene because of its resin modification and processing technology advances, the use of the amount also increased year by year. Third, the advantages of blow molding machine: 1, the use of plastic containers processed by blow molding machine, with high thickness, corrosion and abrasion resistance, etc., can replace part of the wood, ceramic containers. 2, plastic containers made of blow molding machine is relatively cheap, can reduce the cost of daily life. 3, processing speed, high efficiency. Traditional ceramic wood products a time-consuming and laborious, and secondly, the accuracy is not enough.

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