发明名称 |
Method for Injection Molding at Low, Substantially Constant Pressure |
摘要 |
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. |
申请公布号 |
US2012295050(A1) |
申请公布日期 |
2012.11.22 |
申请号 |
US201213476197 |
申请日期 |
2012.05.21 |
申请人 |
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发明人 |
ALTONEN GENE MICHAEL;BERG, JR. CHARLES JOHN;NEUFARTH RALPH EDWIN;SCHILLER GARY FRANCIS;LAYMAN JOHN MONCRIEF;SCHARRENBERG RAINER |
分类号 |
B29C45/18;B29C45/72;B29C45/77;B32B1/02 |
主分类号 |
B29C45/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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