(1) Measures related to mold

• Lower the cavity surface temperature slightly.
• Enlarge gates and runners
• Make the sprue thicker.
• Reexamine the mold cooling circuit to improve cooling efficiency.
• Modify the cooling structure of the part that is hard to cool to a structure that is easy to cool.
  (Example: Baffle plate structure, cooling pipe structure, heat pipe, non-ferrous metal nest)
• Increase the number of gates.
• Change the gate position to the thick part.

(2) Measures regarding injection molding conditions

• Increase the holding time.
• Set a higher holding pressure.
• Set the injection speed faster.
• Lower the nozzle temperature.
• Increase the measured value.
• Increase the amount of cushion.
• Try changing the injection molding machine.
• Allow sufficient cooling time
• Replace the backflow prevention ring of the injection unit.

(3) Measures related to molded product design

• Remove the thick part of the molded product.