发明名称 |
Sole moulding - with ptfe-coated die to prevent sticking - in laminated polyurethane foam soles |
摘要 |
The surface of the die in an injection moulding equipment is covered with polyethylene or polytetrafluorethylene to prevent the polyurethane foam from sticking during successive injections in the production of laminated soles for footwear. |
申请公布号 |
DE2020335(A1) |
申请公布日期 |
1971.12.02 |
申请号 |
DE19702020335 |
申请日期 |
1970.04.25 |
申请人 |
GUSTAV HOFFMANN GMBH |
发明人 |
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分类号 |
B29C33/68;B29D35/00;B29D35/08 |
主分类号 |
B29C33/68 |
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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