发明名称 |
METHOD FOR FOAM INJECTION MOLDING OF THERMOPLASTIC RESIN |
摘要 |
A method for injection foaming molding of a thermoplastic resin includes the steps of (1) injecting the foaming-agent-containing plasticized resin from an injection apparatus 30 to fill a mold cavity 10a, (2) releasing a clamping force of a mold 10 immediately after the foaming-agent-containing plasticized resin is injected and filled into the mold cavity 10a, so as to release the pressure of the foaming-agent-containing plasticized resin in the mold cavity 10a, (3) maintaining the pressure-released state of the foaming-agent-containing plasticized resin in the mold cavity l0a for a predetermined period time, (4) expanding the mold cavity 10a to foam the foaming-agent-containing plasticized resin, and (5) cooling and maintaining the foaming-agent-containing plasticized resin while the mold cavity 10a is in the expanded state.
|
申请公布号 |
CA2618845(C) |
申请公布日期 |
2010.12.21 |
申请号 |
CA20062618845 |
申请日期 |
2006.08.23 |
申请人 |
UBE MACHINERY CORPORATION, LTD. |
发明人 |
OKAMOTO, AKIO;MIYAMOTO, KAZUAKI |
分类号 |
B29C45/00 |
主分类号 |
B29C45/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|