What is the Influence of mold deformation

Note into the cavity of the plastic melt of high pressure, to cause a closed cavity expansion model, mould along the parting surface rise trend, want to have a big enough clamping force, the generation and expansion force in the opposite direction of compression force, the parting surface are not isolated, high pressure within the cavity will not melt from the parting surface overflow, most previous with larger clamping force, is a mold in injection molding, pressure, cooling the whole process will produce larger compression variable, has affected the precision of plastic parts.