Metso Paper Inc.

Exel Oyj

Millidyne Oy

Petri Sorsa

Pentti S Lehtonen

Veli-Pekka Tarkiainen

Tapio M&auml;ntyl&auml;

Liisa Muilu

Kirsi Kervinen

Jari Knuutila

Mika Kolari

A dewatering member for a paper or board machine has a composite body () and a hard surface layer (). The composite body () is manufactured in a pultrusion process. An adhesion layer () is formed on desired outer surfaces of the composite body () such that reinforcements passed to the adhesion layer () have been passed to the pultrusion process through a separate resin bath, to which an adhesion improving agent has been added such that the hard surface layer () can be applied directly onto it, and reinforcements forming the inner portion of the composite body () have been passed to the pultrusion process through a second resin bath. The composite body () is coated with a hard coating layer () produced by thermal spraying, and the coating () is ground.

Dewatering member with a composite body for a paper or board machine and method for manufacturing a dewatering member with a composite body for a paper or board machine

The invention concerns a process for treatment of faces that contain chromium or aluminum in a paper/board machine or in a finishing machine. A fluorine compound of low surface energy is applied onto the face, which compound is made to adhere to the chromium or aluminum atoms in the face.

Process of surface treatment for faces that become contaminated in a paper or board machine

Growing community of inventors

Tampere, Finland

Petri Sorsa