发明名称 |
COMPOSITE HIGH-PRESSURE TUBE AND METHOD OF MANUFACTURING THE TUBE |
摘要 |
<p>A high-pressure composite pipe of the present invention comprises an inner layer pipe made of a synthetic resin, and a reinforcing layer formed by spirally winding a stretched polyolefin resin sheet on an external circumferential surface of the inner layer pipe. The synthetic resin for the inner layer pipe or a heat-sealable resin is filled into a gap defined by the stretched polyolefin resin sheet, thereby avoiding penetration of water from a cut surface of the pipe. A method of the present invention for manufacturing a high-pressure composite pipe comprises the steps of: manufacturing an inner layer pipe made of a synthetic resin; spirally winding a stretched polyolefin resin sheet on an external circumferential surface of the inner layer pipe; filling the synthetic resin for the inner layer pipe, in a melted state, into a gap defined by the stretched polyolefin resin sheet, wherein the stretched polyolefin resin sheet is heated in the wound state so as to generate a shrinkage stress in the stretched polyolefin resin sheet; and fusing the stretched polyolefin resin sheet and the inner layer pipe together. <IMAGE></p> |
申请公布号 |
EP1314923(B1) |
申请公布日期 |
2006.07.26 |
申请号 |
EP20010958527 |
申请日期 |
2001.08.27 |
申请人 |
SEKISUI CHEMICAL CO., LTD. |
发明人 |
YAMAGUCHI, KOJI;MATSUZAKA, KATSUO;YAMADA, TAKEHIRO;ADACHI, KOICHI;NOGAMI, MITSUHIDE |
分类号 |
F16L11/08;B29C47/00;B29C61/00;B29C61/02;B29C63/10;B29C63/14;B29D23/00;B32B1/08;B32B27/32;F16L9/12 |
主分类号 |
F16L11/08 |
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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