发明名称 |
Systems and methods for deforming an outer wall of pipe |
摘要 |
A method of deforming an outer wall of polymer pipe is provided. The method includes: forming dual-wall pipe having a smooth wall and a corrugated wall; extruding an outer wall of pipe onto the corrugated wall of the dual-wall pipe; penetrating the outer wall of pipe with a vacuum punch; and drawing a vacuum between the corrugated wall and the outer wall via the vacuum punch; wherein the vacuum drawn between the corrugated wall and the outer wall causes the outer wall to deform in a direction towards the corrugated wall. An apparatus for forming an outer wall of pipe and a mold configured to form a coupling preform in a segment of continuously-extruded and molded polymer pipe are also provided. |
申请公布号 |
US8398914(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US20100721196 |
申请日期 |
2010.03.10 |
申请人 |
SUTTON GERALD S.;ADVANCED DRAINAGE SYSTEMS, INC. |
发明人 |
SUTTON GERALD S. |
分类号 |
B29C49/04;B29C49/22 |
主分类号 |
B29C49/04 |
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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