Tamfelt Oyj Abp

Metso Fabrics Inc.

Tauno Virtanen

Kari Hyv&ouml;nen

Heikki Rehakka

Kati Mikkonen

Bo R&ouml;kman

A method for manufacturing a press felt with a seam, to a press felt, and a base fabric of a press felt. The base fabric is a one-base structure with machine direction yarns forming seam loops and further machine direction yarns running in the web-side surface layer. The machine direction yarns weave with cross yarns. The yarn ratio of the surface layer machine direction yarns to the intermediate layer and further the bottom layer machine direction yarns is at least 2:1:1. In addition, the surface layer machine direction yarns have a long run and their cross-sectional area is smaller than the yarns forming the seam loops.

Method for manufacturing press felt with seam, press felt, and base fabric

A method of manufacturing a press felt, a press felt and a base fabric. The press felt comprises a base fabric with a batt fiber layer attached on at least the surface facing a paper web. The base fabric is a laminate comprising at least two separate layers. For the base fabric, one or more base fabric modules are provided, which are assembled with a butt seam into a closed loop.

Press felt structure and method of manufacturing press felt

A method of making a press felt, a press felt and a base fabric. The base fabric comprises a surface component on the surface facing the paper web to be dried and a base component below the surface component. The transverse jointing edges of the base component are provided with seam loops, by means of which the base component can be connected into a closed loop. At the first jointing edge of the base fabric the surface component extends for a predetermined distance longer than the base component and forms a seam flap that protects the seam area of the base component.

Method of making press felt, and press felt

A method of making a press felt, and a press felt. The press felt comprises a continuous base fabric in the lateral direction, and at least one batt fiber layer. The closed-loop base fabric is made of longitudinal and transverse yarns. The properties of the press felt, such as permeance, are arranged to be different in edge portions of the press felt from the midportion of the felt.

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Tampere, Finland

Tauno Virtanen