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Dalian hollow molding can be divided into several categories

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Dalian hollow molding can be divided into several categories

Release date:2018-05-03 00:00 Source:http://www。dljinghe。com Views:

The key to transnational competition of hollow molding products is transportation.  According to the average statistics of our plastics industry, the transportation radius is greater than 800 km, and the economy will be greatly reduced. In addition, the value of the loaders of hollow products, when the general loading is low priced water or daily necessities, the increase in the cost of the container will directly affect the sale of the content of the goods.


The plastic varieties for hollow blow molding include polyethylene, polyvinyl chloride, polypropylene, polystyrene, linear polyester, polycarbonate, polyamide, cellulose acetate and polyacetal resin. The consumption of HDPE accounted for the first. It is widely used in food, chemical and liquid packaging. High molecular weight polyethylene is suitable for manufacturing large fuel tanks, cans and so on.


Polyvinyl chloride (PVC) is widely used in cosmetics and detergent packaging because of its better transparency and tightness. Dalian hollow blow molding can basically be divided into two main categories: extrusion blow molding and injection blow molding. The main difference between them is the preparation of parison, and the blow molding process is basically the same.


At present, the largest amount of 5L ~ 1000L hollow products in China is extrusion blow molding process. The main materials used are HDPE, PP, ABS, PC and so on.  The main products are all kinds of industrial products, such as packing barrels, automobile fuel tanks, automobile ventilation fittings, desktop boards and other industrial products. The typical representative product of extrusion technology is 200L double L ring barrel. In the extrusion process, the most complicated process and the most difficult technology is the forming of double L ring barrel.


At present, extrusion equipment is the main equipment in China。 The market share of 20L ~ 1000L equipment is more than 70%。 Among them, the production of 200L double L ring bucket equipment, Qinchuan development market share of more than 80%。

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