Reduction of filling pressure
During injection molding, molten resin is injected into mold cavity at high pressure to form a product. For conventional injection molding, the mold temperature is low. Thus, cooling and solidification begin at the parts in contact with the inner walls of the mold, and the resin flow channel gradually becomes narrower. Therefore, the pressure applied near the gate is hardly transmitted to the fluid end, resulting in great pressure distribution in the mold cavity. Differences in the filling pressure lead to differences in the shrinkage, resulting in warpage and deformation.
In the patented technology of RHCM, filling proceeds when the mold temperature is high enough. Thus, the pressure is evenly transmitted to the end, and the pressure distribution in the cavity is eased and balanced, resulting in reduced warpage and deformation.