How to deal with bubbles in injection molding products

The treatment method of air bubbles in injection molding products: 1, which can improve the mold temperature and reduce the injection time and cycle. Because PP bubbles are formed by internal shrinkage caused by too long cooling time. 2, improve the back pressure to extend the injection time, high pressure and low speed. 3, the storage speed is too fast, and some back pressure is appropriately increased. 4. Raw materials are not dry enough and contain moisture. 5. The plastic stays in the cylinder for too long. 6. The ejection amount of the screw is too long. 7. Poor exhaust of the mold. 8. The injection pressure is too low and the injection speed is too high. 9. The melt temperature is too high and the mold temperature is too low.