Injection molding machine uses the same principle as extrusion. The raw plastic is fed from a hopper to a melting chamber. However, instead of being forced out of a die, the melted plastic is forced into a cold mold under high pressure. Once the mold cools and solidifies, the product is cleaned and finished. Products made by injection molding include butter containers, bottle caps, toys and lawn furniture.
2000-3000 Times testing with high pressure is the necessary step.
Injection molding machine is widely used to produce all kinds of plastic products.
Such as plastic knife, spoon, fork, PET preform, bottle cap, plastic crate etc.