| 摘要 |
<p>Method for producing a deformed pipe liner, starting from a tubular starting section (1) made of thermoplastic material which has an annular crosssection. According to the method, the tubular section moving out of an extruder is moved along between shaping (3) and supporting means (16) for the production of an essentially C-shaped deformation. The inside of the wall of the starting section is kept at a higher temperature than the outside of the wall, at least during the deformation of the starting section. The temperature of the inside of the wall is preferably kept lower here than the crystalline melting temperature of the plastic material.</p> |
