B - Operations – Transporting – 21 – K
Patent
B - Operations, Transporting
21
K
26/155
B21K 21/00 (2006.01) B29C 53/48 (2006.01) B29C 61/02 (2006.01) B29C 63/06 (2006.01) B29C 65/20 (2006.01) B29C 71/02 (2006.01) F16L 55/00 (2006.01) F16L 59/14 (2006.01) F16L 59/153 (2006.01)
Patent
CA 1086038
ABSTRACT OF THE DISCLOSURE: Method for the continuous manufacture of a tube or tube bundle provided with an insulating covering made of closed-cell thermoplastic foam plastic, the insulating covering being obtained from a flat strip of foam plastic by deforming it transversely to its longitudinal extend and closing the butt joint by welding or luting. The method is characterised in that the foam plastic strip is briefly heated on its side which will later form the inside of the insulating covering until it reaches the thermoelastic or thermoplastic state and is then preformed into the insulating covering cross-section, this insulating covering-preformed piece is then cooled down slightly if necessary and the tube or tubes are continuously inserted through the open butt joint of the insulating covering-preformed piece and the butt joint of the insulating covering is then closed.
292236
Osterhagen Gerhard
Wissinger Waldemar
Dynamit Nobel Aktiengesellschaft
Robic Robic & Associes/associates
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