B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 53/30 (2006.01) B29C 67/00 (2006.01) B29D 23/00 (2006.01) F16L 9/12 (2006.01) F16L 11/04 (2006.01) B29C 47/00 (2006.01)
Patent
CA 2116263
The invention relates to a method and an apparatus for forming ribs with sideward projections in a plastic pipe. The projections are formed by means of elongated rolls (10) each moving around the pipe and rotating about its central axis, the rolls being in an inclined position and at an oblique angle with respect to the central axis of the pipe.
Jarvenkyla Jyri
Johansson Ake
Kristensson Ronny
Scharwachter Dieter
Cassan Maclean
Uponor Innovation Ab
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