| 摘要 |
The present invention relates to a method for manufacturing a pipe, particularly a cable conduit, from a thermoplastic synthetic material. Said pipe is equipped with at least one triple-layered, single-material structure consisting of a pipe inner wall (4), a foamed intermediate layer (7) and a pipe outer wall (5). According to the invention, said intermediate layer (7) is foamed by the combined action of at least one chemical propellant and one physical propellant. |
