| 摘要 |
PURPOSE: A spiral hose made of polyethylene is provided to improve productivity by simplifying a manufacturing process, and to increase the coupling force of coupled parts. CONSTITUTION: A band-shaped polyethylene member(50) has a uniform side section, and is wound and forms a spiral hose. The side section of the polyethylene member is composed of a plurality of bent parts so that a protrusion unit(52) is contacted with a groove unit(54). The end of the protrusion unit is overlapped with the end of the groove unit.
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