In the process of hollow blow molding, the raw material rubber particles are plasticized under the rated back pressure, and supercritical carbon dioxide or N2 is introduced into the melting equipment in the hollow blow molding machine to make the gas and the molten raw material Perform sufficient mixing to produce a plastic preform for molding. The parison enters the mold through the die head of the hollow blow molding machine and the extruder successively. During the molding process, it will be subjected to a certain pressure. Due to the thermal instability, a lot of bubbles will be generated inside the parison. In the subsequent cooling process, it will gradually become larger and become the inner wall of the plastic product, and then complete the production of plastic hollow blow molding products.

Advantages of foaming technology of large hollow blow molding machine:

Improve the dimensional accuracy of plastic blow molded products, shorten the product production cycle, and improve production efficiency;

Reduce the residual stress of the product and improve the warpage and deformation of the product;

Reduce sink marks on the product surface;

Effectively save raw materials and reduce product quality;

Reduce the demand for clamping force and save manufacturing costs;

The blow-molded products produced are more durable, and the life of the blow-molded products is increased.