US 2010/0059194 A1 · SCREEN

Abstract

The present invention relates to a method for the production of a screen and to a screen for the treatment of a fibrous material suspension suitable for the production of a fibrous material web, the screen including at least two screen layers that are connected to each other and have apertures, at least some of the apertures being arranged in such a way that the result is screen openings leading through the screen. The production of the screen is simplified in that some of the apertures are arranged in such a way that the result is recesses on the front side of the screen which do not pass through the screen, and at least the apertures forming the recesses are introduced into the screen layers before the latter are connected.

Claims22

Dependent claims

A method for the production of a screen for the treatment of a fibrous material suspension suitable for the production of a fibrous material web, the method comprising the steps of:

connecting at least two screen layers;
forming a plurality of apertures in said at least two screen layers;
and
arranging said apertures such that a first portion of said apertures form screen openings which lead through the screen and a second portion of said apertures form a plurality of recesses on a front side of the screen, said recesses not passing through the screen, wherein at least said second portion of said apertures forming said recesses are introduced into said at least two screen layers before said at least two screen layers are connected.

1 more element

Dependencies are inferred from the claim text.

Screen

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Screen

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Abstract

Claims22