| 发明名称 |
Apparatus for producing a tubular article having an annular groove therein |
| 摘要 |
A tubular article having a peripheral groove is formed by providing the groove in the wall of a tubular blank made of thermoplastic material such as polyethylene terephthalate by applying simultaneously a pressure against the wall of the blank and axial stretching forces. In the bottom of the groove the material is drawn to yielding and the blank is simultaneously elongated.
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| 申请公布号 |
US4468187(A) |
申请公布日期 |
1984.08.28 |
| 申请号 |
US19820415014 |
申请日期 |
1982.09.07 |
| 申请人 |
PLM A.B. |
发明人 |
NILSSON, CLAES T.;JAKOBSEN, KJELL M.;LARSEN, LARS G. |
| 分类号 |
B29B11/06;B29B7/00;B29B11/08;B29B11/10;B29B11/14;B29C31/00;B29C45/00;B29C47/00;B29C47/92;B29C49/00;B29C49/02;B29C49/04;B29C49/08;B29C49/10;B29C49/14;B29C49/22;B29C49/42;B29C49/48;B29C49/54;B29C49/58;B29C49/64;B29C49/68;B29C49/78;B29C51/00;B29C51/10;B29C51/22;B29C55/18;B29C55/22;B29C55/30;B29C59/04;B29C65/00;B29C67/00;B29K67/00;B29K77/00;B29L22/00;B29L23/00;B65D1/02;(IPC1-7):B29C17/02 |
主分类号 |
B29B11/06 |
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