Injection molding, die injection molding of thermoplastics, involves melting the plastic material and then injecting it into the membrane cavity.
advantage:
1. The choice of gate location is flexible;
2. The gate can be separated from the injection molded part by itself;
3, the gate traces are small;
Disadvantages:
1. The position of the gate is easy to degumming;
2, the water location is easy to produce baking;
3. Manual cutting of film is required;
4. The pressure loss from the gate position to the cavity is large.