发明名称 |
Verfahren zum Schweißen von Kunststoffrohren und Muffe zur Durchführung des Verfahrens |
摘要 |
In a process for welding plastic tubes and fittings, esp. of PVDF, (i) opposing tube (1,2) ends are butted against each other; (ii) an electrically heated sleeve (3) located over the joint heats each tube (1,2) in an outer area (6) at a specified distance from the butt joint (15) and welds the sleeve (3) to the tubes (1,2); (iii) a more intense htg is produced by the sleeve (3) in an inner area (5) to weld the abutting tube (1,2) ends together and the sleeve (3) to the tubes (1,2). A claimed welding sleeve (3) includes a heating element (4) with higher heat output in the centre (5) area than in the outer (6) areas. Also claimed is an inflation sack of silicone rubber, 1.5-2.5 mm thick for insertion into the tubes during welding to prevent softened plastic flowing inside the tubes (1,2). <IMAGE> |
申请公布号 |
DE4422372(A1) |
申请公布日期 |
1996.01.04 |
申请号 |
DE19944422372 |
申请日期 |
1994.06.27 |
申请人 |
AGRU ALOIS GRUBER GES.M.B.H., BAD HALL, AT |
发明人 |
LUEGHAMER, ALBERT, ING., BAD HALL, AT |
分类号 |
F16L47/02;B29C65/00;B29C65/20;B29C65/34;B29K27/00;B29L23/00;F16L47/03 |
主分类号 |
F16L47/02 |
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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