Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1994-02-15
1996-12-31
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
2642093, 425325, 425327, 425335, 425343, 425336, 425366, 425392, 425393, B29D 1600
Patent
active
055891276
ABSTRACT:
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.
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Jarvenkyla Jyri
Johansson .ANG.ke
Kristensson Ronny
Scharwachter Dieter
Dang Vi Duong
Silbaugh Jan H.
Uponor Innovation AB
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