挤出吹塑是一种制造中空热塑性制件的方法。广为人知的吹塑对象有瓶、桶、罐、箱以及所有包装食品、饮料、化妆品、药品和日用品的容器。大的吹塑容器通常用于化工产品、润滑剂和散装材料的包装上。其他的吹塑制品还有球、波纹管和玩具。对于汽车制造业，燃料箱、轿车减震器、座椅靠背、中心托架以及扶手和头枕覆盖层均是吹塑的。对于机械和家具制造业，吹塑零件有外壳、门框架、制架、陶罐或到有一个开放面的箱盒。
Extrusion blow moulding is a method of manufacturing hollow thermoplastic parts. Well-known blow moulding objects are bottles, barrels, cans, boxes and containers for all packaged foods, beverages, cosmetics, medicines and daily necessities. Large blow-moulded containers are usually used for packaging chemical products, lubricants and bulk materials. Other blow-moulded products include balls, bellows and toys. For the automotive industry, fuel tanks, car shock absorbers, seat backs, central brackets and armrests and pillow covers are all blow-moulded. For machinery and furniture manufacturing, blow-moulded parts include shells, door frames, racks, pots or boxes with an open surface.
聚合物
polymer
最普通的吹塑挤塑料原料是高密度聚乙烯，大部分牛奶瓶用这种聚合物制成的。其他聚烯烃也常通过吹塑来加工。根据用途，苯乙烯聚合物、聚氯乙烯、聚酯、聚氨酯、聚碳酸酯和其他热塑性塑料也可以用来吹塑。
The most common material for blow-extrusion plastics is high density polyethylene, which is used in most milk bottles. Other polyolefins are often processed by blow moulding. According to the use, styrene polymers, polyvinyl chloride, polyester, polyurethane, polycarbonate and other thermoplastics can also be used for blow moulding.
最近工程塑料在汽车行业被广泛接受。材料选择是以机械强度、耐候性、电学性能、光学性能和其他性能为依据的。
Recently, engineering plastics have been widely accepted in the automotive industry. Material selection is based on mechanical strength, weatherability, electrical properties, optical properties and other properties.
工艺
Technology
3/4的吹塑制品是由挤出吹塑法制造的。挤出工艺是强迫物料通过一个孔或模具来制造产品。
3/4 of blow moulding products are manufactured by extrusion blow moulding. The extrusion process forces the material to make a product through a hole or die.
挤出吹塑工艺由5步组成：1.塑料型胚（中空塑料管的挤出）；2.在型胚上将瓣合模具闭合，夹紧模具并切断型胚；3.向模腔的冷壁吹胀型培，调整开口并在冷却期间保持一定的压力，打开模具，写下被吹的零件；5.修整飞边得到成品。

The extrusion blow molding process consists of five steps: 1. Plastic embryo (extrusion of hollow plastic youle.89ix.comhuatiw.89ix.comzuhehuati.89ix.comguandao.89ix.comhuanwanggui.89ix.com

peidiangui.89ix.comtube); 2. Close the valve mould on the embryo, clamp the mould and cut off the embryo; 3. Blow the mould into the cold wall of the cavity, adjust the opening and maintain a certain pressure during cooling, open the mould, write down the blown parts; 5. Dressing the flying edge to get the finished product.