| 摘要 |
PURPOSE: A cover for pipes is provided to prevent the cover from being torn by preparing a cover comprising first-third cover layers and an aluminium foil layer. CONSTITUTION: A cover for pipes includes a cover layer. The cover layer is attached to the outside of the pipe in a multi-layered type. The cover layer includes a first cover layer (10), a second cover layer (20), a third cover layer (30), an aluminium foil layer (40), and a fourth cover layer. The first cover layer is made of polyethylene form and is attached to the outside of the pipe. The second cover layer is made of cross-linked polyetylene form and the inner surface is attached to the outside of the first cover layer. The third cover layer is made of nonwoven fabric and the inner surface is attached to the outside of the second cover layer. The inner surface of the aluminium foil layer is attached to the outside of the third cover layer. The fourth cover layer is made of nonwoven fabric and is attached between the pipe and the first cover layer. |
