发明名称 |
BIAXIAL STRETCHING OF PLASTIC TUBES |
摘要 |
A continuous process and apparatus for producing oriented plastic tube comprising the steps of extrusion (12), temperature conditioning (18), diametrical expansion (zone 20) and cooling (30), characterised in the step of inducing axial draw of the tube between first (16) and second (25, 36) hauloff means located upstream of said expansion step (zone 20). |
申请公布号 |
CA2231876(A1) |
申请公布日期 |
1997.03.20 |
申请号 |
CA19962231876 |
申请日期 |
1996.09.13 |
申请人 |
UPONOR B.V.;VINIDEX TUBEMAKERS PTY. LIMITED |
发明人 |
CHAPMAN, PETER GLANVILLE;JARVENKYLA, JYRI |
分类号 |
B29C47/88;B29C47/90;B29C55/26;B29C55/28 |
主分类号 |
B29C47/88 |
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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