What is Blow Molding Machine

In the plastics industry, everyone will hear the term blow molding. What is blow molding? Do you really know? Today, I will take you to know more about it.

What is blow molding?

Blow molding is a method of forming hollow products by means of gas pressure to blow and swell hot melt embryos closed in the mold. The hollow blow molding is to extrude from the extruder and put the tubular thermoplastic blank which is still in the softening state into the molding mold. Then through the compressed air, using the air pressure to deform the blank along the die cavity, thus blowing into a short neck hollow products.

Hollow blow molding is the most important forming technology for producing hollow plastic products. Almost all thermoplastics can be used for hollow blow molding, such as polyethylene, PVC, polypropylene, polystyrene, linear polyester, polycarbonate, polyamide, cellulose acetate, polyacid formaldehyde resin, etc.

With this molding technology, it can not only produce small volume bottles of several milliliters but also can produce thousands of liters of large-volume barrels and storage water tanks, as well as floating balls, automobile fuel tanks, and kayaks.