发明名称 |
PROCEDIMENTO PER LA PRODUZIONE DI UN TUBO PER CAVI TERMICAMENTE ISOLATO |
摘要 |
In a process for producing thermally insulated piping comprising a metal tube (2), a foamed plastic insulating layer, and an outer sheath (9), the latter is formed from a flexible strip in order to obtain a pipe which can readily be bent for installation, the overlapping edges of this strip being joined by adhesive-bonding. The outer sheath composed of the flexible plastic strip is supported from the outside during the production of the insulating layer. A flexible, closed-cell polyurethane foam is introduced from a nozzle (10). A spacer-helix (7) is applied around the tube (2) before the sheath (9) is added. <IMAGE> |
申请公布号 |
IT8349307(D0) |
申请公布日期 |
1983.11.09 |
申请号 |
IT19830049307 |
申请日期 |
1983.11.09 |
申请人 |
KABEL-UND METALLWERKE GUTEHOFFNUNG-SHIDTTE AKTIENGESELLSCHAFT |
发明人 |
EBELING FRIEDRICH;KLEIN GERHARD;ROHRIG PETER;SCHMIDTCHEN HANS MARTIN |
分类号 |
B21C37/26;B29C44/24;B29C53/48;B29C63/00;B29C63/04;B32B5/20;B32B15/20;B32B27/30;B32B27/40;F16L;F16L11/00;F16L11/04;F16L11/14;F16L59/14;F16L59/153 |
主分类号 |
B21C37/26 |
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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