| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an insulated duct, capable of surely avoiding generation of condensation, while increasing flexibility of the same. SOLUTION: An insulating layer 3 is interposed between the tubular inside hose unit 1 and the tubular outside hose unit 2, while the outside of the insulating layer 3 is covered by a coating layer 4. The tubular outside hose unit 2 is constituted of a belt type nonwoven fabric, wound spirally under a condition that a part of the nonwoven fabric is superposed in the lengthwise direction of the hose, while adhering the superposed parts with an adhesive agent 8.</p> |
