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Papermachine fabric

a paper machine and fabric technology, applied in the field of paper machine fabric, can solve problems such as affecting the quality of paper produced in the paper machine, and achieve the effect of reducing indentations on paper

Inactive Publication Date: 2006-08-17
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a new type of papermachine fabric that can improve paper quality and prevent issues like missing dots in the finished product. It achieves this by using a fabric with exposed fiber ends that form numerous contact points with the paper, resulting in a smooth and even surface. The fabric also has improved paper removal properties, making it easier to transfer the paper to another fabric. The carrier layer of the fabric is made of a soft binder layer that helps reduce indentations on the paper. The fiber material is embedded in the binder layer, and the binder layer is formed from a thermoplastic elastomer for flexibility and to contribute to the overall permeability and resistance of the fabric.

Problems solved by technology

Loops of this type or fibers lying flat can impair the quality of the paper produced in the paper machine because of indentations in the paper, in particular if these indentations or impressions lead to missing dots on the paper later when the paper is printed, for example in the gravure printing process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment Construction

[0027] The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard, no attempt is made to show structural details of the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice.

[0028] In FIG. 1, a papermachine fabric 1, in particular but not exclusively a press felt for the press section of a paper machine not specifically shown, is shown schematically in a perspective partial view.

[0029] The x axis shown in FIG. 1 extends in the longitudinal direction of the papermachine fabric 1, also calle...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a papermachine fabric, in particular a press felt, having a carrier layer on which, at least in some sections, fibers with exposed fiber ends are arranged, the fibers forming a contact surface with which a paper web can be brought into contact, and wherein the contact surface is substantially formed by the exposed fiber ends.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application claims priority under 35 U.S.C. §119 of German Patent Application No. 10 2004 056 319.5 filed on Nov. 22, 2004, the disclosure of which is expressly incorporated by reference herein in its entirety. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The invention relates to a papermachine fabric, in particular a press felt for the press section of a paper machine. [0004] 2. Discussion of Background Information [0005] In U.S. Pat. No. B2-6,605,188 a trasport belt for a paper machine is disclosed which, on its paper-side surface, has a layer comprising at least two fibers with different surface properties. This paper-side layer has hydrophilic and hydrophobic regions, in order to improve the separation properties of the belt from the paper web. The additional surface having the at least two different fibers is ground flat in a suitable way, the fibers being to some extent exposed on the surface and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D21F3/00D04H1/46
CPCD21F7/083D21F7/086Y10T442/682
Inventor KLEISER, GEORGELESMEISTER, ACHIMWALKENHAUS, HUBERTCROOK, BOBRAGVALD, HANSBURBAUM, RALF
Owner VOITH PATENT GMBH
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