| 摘要 |
PURPOSE: A flexible duct hose is provided to quickly manufacture the flexible duct hose by simplifying a working process, and to improve insulation efficiency. CONSTITUTION: A flexible duct hose(100) is composed of an insulating material(10), a polyester film(20) integrated with the outer surface of the insulating material by compression forming, and a metallic plate(40). The insulating material is laminated with polyester nonwoven-fabrics, and has high specific gravity. The insulating material is overlapped spirally.
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