Plastic molding injection molding products of different methods of making, are due to differences in raw materials, processing requirements, yield and cost, have different advantages in processing different products.

Plastic hollow products include three main method:

1, drawing injection molding: include a injection two methods of extrusion of a tensile one injection, injection of a stretch, but products processing biaxial orientation, greatly reduce the production cost and improve product performance.

2, extrusion molding: mainly used for billet processing is not supported;

3, injection molding: mainly used for billet processing by metal core support;

But the plastic molding drawback is the high cost of injection molding equipment, products, and to some extent is only suitable for small. So in the plastic solidification, stress low-voltage products have low, disperse the stress is uniform, tensile, impact, bending properties and low stress can improve products.