SEASKYTOOLING Injection mold runner and gate design
- With a circular runner as possible.
- Runner section diameter at least 1mm bigger than the product thickness on the gate area.
- Main runner diameter should be 20% bigger than the secondary runner diameter at least.
- Multi-cavity mold runner must be balance design
- The common runner with 400 # sandpaper at least; Using 600 # sandpaper polishing for the mirror polishing product runner at least.
- There should be slug and venting at the end of the runner.
- Trapezoidal runner requirements as below:
Direct gate and side gate for injection molding
Banana gate: This kind of gate can not be used for the resin with glass fill.
Pin point gate and sub-gate
Fan gate and thin film gate for injection molding
Three plate mold runner pin design