Uponor N.v.

Uponor Innovation Ab

Uponor B.v.

Dieter Scharwachter

Jyri Jaakko Jarvenkyla

Eino Holso

Lennart Agren

Paul Holso

Bjorn Axel Olsson

Ronny Kristensson

ANGke Johansson

Lennart Gren

Method for manufacturing a corrugated pipe, and a corrugated pipe

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.

Method and apparatus for forming ribs with sideward projections in a

A production line for manufacturing corrugated pipe also has a calibrating basin for manufacturing smooth-walled pipe arranged between form paths of the corrugator when the paths have been separated. An extruder that normally feeds a molten plastic pipe blank to the corrugator for making corrugated pipe then feeds the pipe blank to the calibrating basin for making smooth-walled pipe, and other down-the-production-line equipment can be the same, too.

Pipe manufacturing line

Method and apparatus for manufacturing ribbed pipe

Growing community of inventors

Espoo, Finland

Dieter Scharwachter