What factors should be considered when opening the exhaust groove of the injection mold?

The opening position of the injection mold is to consider the position of the gate. Generally, the mold uses the gap between the molds for exhaust. Therefore, the gate position should make the end of the filling process close to the parting surface or the top bar. Second, different plastics have different exhaust gaps. For example, PS, ABS is 0.05PA, PE, PP, etc. is 0.025～0.04, PC and other high melt viscosity plastics is 0.06～0.08; the location of the vent groove is generally on the parting surface, and it can be opened in any location under special circumstances. .