| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat insulation tube to be prevented from breakage and peeling of the fused part of a foamed sheet, freely select thickness, be prevented from lowering of a heat insulation property even when a bent pipe part is inserted, and capable of continuously manufacturing through simple equipment. SOLUTION: A belt-form sheets 2 and 20 are wound around the outer peripheral surface of a pipe body 1 formed of a thermoplastic resin foam.
|
