| 发明名称 |
A process of joining plastics with high melt viscosities. |
| 摘要 |
The invention concerns a process of joining plastics having high melt viscosities e.g. for producing sealing rings, especially for ball valves, from extruded semi-product. According to this process the ends of the semi-product to be connected are non-detachably connected by applying a temperature of 200 to 400 DEG C and a pressure at least 0,1 MPa or optionally using a fusible connecting intermediate layer. |
| 申请公布号 |
EP0080729(A1) |
申请公布日期 |
1983.06.08 |
| 申请号 |
EP19820111032 |
申请日期 |
1982.11.30 |
| 申请人 |
SIGMA KONCERN |
发明人 |
ZAPLETAL, ZDENEK, DIPL.-ING.;KONECNA, ALENA, DR.;PETERKA, MILAN, DIPL.-ING.;ZAPLETAL, JAN, DIPL.-ING. |
| 分类号 |
B29C53/00;B29C65/00;B29C65/02;B29C65/18;B29C65/40;B29C65/48;C08J5/12 |
主分类号 |
B29C53/00 |
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代理人 |
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