Molded Resin Parts Remaining in Mold

Molded parts sometimes stick to and remain in the mold due to the electrostatic charge generated by friction with the mold.
Due to miniaturization and thinner designs, molded parts are lighter and stick more easily. When the shape is complicated, the amount of surface friction with the mold increases and the parts are charged more easily. Furthermore, high-speed molding machines use faster injection speeds, resulting in a larger electrostatic charge and increasingly higher risk of part remaining in molds.