| 摘要 |
Pipes or pipe bundles are insulated with a thermoplastic foam, the insulating sleeve being obtained from a flat strip of foam by deforming it transversely to its longitudinal extent and closing the butt seam by welding or adhesion bonding. The strip is briefly heated, on its side forming the subsequent inner side of the insulating sleeve, to the thermoelastic or thermoplastic state and in this state is preformed to the desired insulating sleeve cross-section. The pipe or the pipe bundle is introduced continuously through the open butt seam of the preform and subsequently the butt seam is closed. The process is simple and economical and is suitable for insulating rigid and flexible pipes or pipe bundles. |
