Calibrator for use in the manufacture of double walled...

Details Calibrator for use in the manufacture of double walled... Calibrator for use in the manufacture of double walled...

B - Operations, Transporting

29

D

18/759

B29D 23/18 (2006.01) B29C 47/06 (2006.01) B29C 49/00 (2006.01)

Patent

CA 1194663

CALIBRATOR FOR USE IN THE MANUFACTURE OF DOUBLE WALLED THERMOPLASTIC PIPE ABSTRACT In an apparatus such as a corrugator for manufacturing thermoplastic pipe with a corrugated outer wall and a smooth inner wall, a calibrator is employed to provide a smoother inner wall and a more rapid inner wall cooling. The calibrator includes a tube wound into a helical coil and an adjustment mechanism for adjusting the coil diameter. A cooling fluid may be passed through the tube.

429064

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