发明名称 |
FREMGANGSMAATE OG ANORDNING FOR FREMSTILLING AV VARMEISOLERTE ROERLEDNINGER. |
摘要 |
The present invention relates to a process for continuously producing thermally insulated conveying pipes, in which the conveying pipe is provided allround with foam, using a film acting as a separating agent towards the device, and with a protective plastic sheath. The foaming round the conveying pipes takes place in a tubular cavity formed by a continuous unit with twin mould-block chains. The conveying pipe with foam round it is then provided in a vacuum-calibrated extruder by means of an annular die with a foamed protective plastic sheath of high density. |
申请公布号 |
NO863378(A) |
申请公布日期 |
1987.02.24 |
申请号 |
NO19860003378 |
申请日期 |
1986.08.22 |
申请人 |
MARQUET & CIE NOEL;LOEGSTOER ROERIND |
发明人 |
SCHROEDER RALPH;DESPINEUX HANS;LARSEN JOERGEN |
分类号 |
B29C31/00;B29C44/24;B29C44/32;B29C47/00;B29C47/02;B29C53/48;B29C53/50;F16L59/02;F16L59/14 |
主分类号 |
B29C31/00 |
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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