| 摘要 |
Multilayer plastic pipe and its manufacturing process, the pipe being protected from deterioration of its properties, when being used and when being handled, and formed from a tubular polymeric support protected by two protective layers each comprising a polymeric composition of unoriented structure, the first layer being compatible with the polymeric composition of the subjacent plastic and the second being an external layer, also serving as finishing coat. A reinforcing layer formed from tapes comprising an oriented polymeric composition may be inserted between the support and the first protective layer. |
