发明名称 |
Method for manufacturing a plastic board and a board obtained with this method |
摘要 |
A method for manufacturing a plastic board comprising a sandwich-like structure comprises the steps of: (1) providing an injection moulding device with a mould which comprises at least two mould parts displaceable relative to each other by displacing means, which mould parts in a closed first extreme position bound a mould cavity connecting onto an injection unit and in an open second extreme position release a formed board for removal; (2) providing foaming means for causing foaming in the mould cavity of plastic injected into the mould cavity; (3) providing blocking means for temporarily rendering the foaming means inactive; (4) energizing the blocking means; (5) energizing the injection unit in the first extreme position of the mould; (6) ending the energizing of the blocking means; (7) ending the energizing of the injection unit; and (8) displacing the mould parts relative to each other in accordance with the graph below: <MATH> <MATH> |
申请公布号 |
EP0692358(A1) |
申请公布日期 |
1996.01.17 |
申请号 |
EP19950201682 |
申请日期 |
1995.06.21 |
申请人 |
CORELL RESIN TECHNOLOGY B.V. |
发明人 |
RICHTERS, FRANCISCUS EGBERTUS;DUERING, JOHANNES;EIDHOF, ANDREAS BERNARDUS;JAGERS, CHRISTIAAN ANTONIUS |
分类号 |
B29C33/44;B29C44/10;B29C44/14;B29C45/00;B29C45/14;B29C45/16;B29C45/26;B29C45/46;B29C45/56;B29C45/76;B29K23/00;B29K55/02;B29K101/12;B29K105/04;B29K503/04;B29K509/08;B29L9/00 |
主分类号 |
B29C33/44 |
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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