| 摘要 |
A device is disclosed for cooling or cooling and calibrating a ribbed tubular wall of a thermoplastic material in a deformable state in which the tubular wall has a circular surface and helically extending rib turns projecting from the circular surface at spaced intervals. A cooling chain of a plurality of interconnected cooling cells is mounted between at least two adjacent rib turns, a flexible cooling conduit interconnects the cells which are adapted to pass a coolant therethrough for cooling the adjacent rib turns, and the cells have wall portions contiguously into engaging the adjacent rib turns.
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