20-12-2018 дата публикации
Номер: WO2018230947A1
Принадлежит:
A composite hose having improved durability and restoring force is disclosed. The composite hose according to the present invention has a coating layer formed in a form of encompassing a spirally wound inner wire, and has a strap provided in a region of the coating layer between the inner wires adjacent to each other. In addition, the strap supports the coating layer toward the center of the coating layer. Therefore, since the coating layer is prevented from being longitudinally extended, the surface of the inner wire facing the center of the coating layer is prevented from being located on the same line as the inner surface of the coating layer, thereby preventing the inner wire from being separated from the coating layer such that the durability of the composite hose can be improved. In addition, as a result of a tensile strength test, the composite hose according to the present embodiment shows greater elastic force than a conventional composite hose, thereby having excellent restorability ...
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