METHOD FOR INJECTION MOLDING AT LOW, SUBSTANTIALLY CONSTANT PRESSURE
摘要
<p>Disclosed herein is a method of injection molding at low, substantially constant melt pressures. Embodiments of the disclosed method now make possible a method of injection molding that is more energy-and cost-effective than conventional high-velocity injection molding processes. Embodiments of the disclosed method surprisingly allow for the filling of a mold cavity at low melt pressure without undesirable premature hardening of the thermoplastic material in the mold cavity and without the need for maintaining a constant temperature or heated mold cavity. Heretofore, it would not have been expected that a constant pressure method could be performed at low pressure without such premature hardening of the thermoplastic material when using an unheated mold cavity or cooled mold cavity.</p>
申请公布号
CA2834890(A1)
申请公布日期
2012.11.29
申请号
CA20122834890
申请日期
2012.05.21
申请人
THE PROCTER & GAMBLE COMPANY
发明人
ALTONEN, GENE MICHAEL;BERG, CHARLES JOHN, JR.;NEUFARTH, RALPH EDWARD;SCHILLER, GARY FRANCIS;LAYMAN, JOHN MONCRIEF;SCHARRENBERG, RAINER