How to overcome the surface of the plastic parts when the injection mold is formed?
After injection mould injection molding, dent or collapse pit on the surface of the plastic, the main reason is that inlet is too small or quantity is not enough, the inappropriate position of inlet, inappropriate mold temperature, injection pressure is small, or the holding time is short, such as underfeeding.The adjustments and solutions are:
1) increase the cutting area of feed inlet or increase the quantity of feed inlet.
2) improve the design of plastic parts or add process holes in the wall thickness, so as to make the wall thickness of the plastic parts even and not too large.
3) improve the feeding port location.
4) reduce material temperature and increase cooling time.
5) strict control of mold temperature, mold temperature is too high, prone to depression;Mold temperature is too low, easy to appear vacuum bubble, produce plastic parts collapse.
6) increase injection pressure and injection speed.
7) increase insulation time.
8) increase the feeding quantity and reduce the area of the overflow tank.