There are 6 steps in plastics injection molding process steps as preparation, setup, mold closing, injection, cooling, mold opening and remove product. I will explain these process in this post.
plastic molding
Plastic molding how to design gas vent
Gas vent is space that air can go out of mold. When molten plastics fills up the mold. The air or molten plastics left in the mold will generate gas. If they can not go out of mold, appearance of samples will not good: have gas, fire, …