| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a duct hose capable of preventing impairing of strength of a resin film when adjacent side edges of the spirally wound resin film are joined by using a molten hard resin reinforcement body. <P>SOLUTION: The resin film is spirally wound to form a cylindrical body, and a molten resin tape is spirally wound over the adjacent side edges of the resin film to be thermally fused, connected and integrated with the resin film. The molten resin tape is composed of a thin soft resin tape directly heat-sealed to the resin film, and a thick hard resin tape heat-sealed to an outer side of the soft resin tape. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
