Hybrid warp exchange triple layer forming fabric

a technology of forming fabric and warp exchange, which is applied in the field of forming fabrics, can solve the problems of reducing the overall machine production efficiency, forming a fibrous web on the surface of the forming fabric, and reducing the quality of the fibrous web, so as to enhance the fabric module and reduce the effect of bottom wefts of a larger diameter

Inactive Publication Date: 2006-12-14
VOTH FABRICS PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018] The warp that weaves only on the bottom, or wear side of the fabric can be of a larger diameter than those that weave on the top, or paper side of the fabric. In this manner the modulus of the fabric is enhanced, and allows for larger diameter bottom wefts to be employed.

Problems solved by technology

Varying amounts of water is removed from the slurry through the forming fabric, resulting in the formation of a fibrous web on the surface of the forming fabric.
Additionally, if the drainage occurs to rapidly or too slowly, the quality of the fibrous web is reduced, and overall machine production efficiency is reduced.

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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  • Hybrid warp exchange triple layer forming fabric
  • Hybrid warp exchange triple layer forming fabric
  • Hybrid warp exchange triple layer forming fabric

Examples

Experimental program
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Embodiment Construction

[0031]FIGS. 1A-1B depict a cross-sectional view of a triple layer fabric 10 having a 2:1 warp ratio and a two shed / three shed arrangement according to the present invention, fabricated on a two beam loom. FIG. 2 depicts the forming side plan view of the same fabric 10.

[0032] A first weft system 12 is shown above a second weft system 14. The first and second weft systems 12, 14 are shown above a third weft system 16. Each weft system 12, 14, 16 is made up of a plurality of yarns 18, 20, 22. First weft yarn 18 has a first yarn diameter, second weft yarn 20 has a second yarn diameter, and third weft yarn 22 has a third yarn diameter. The first, second and third yarn diameters 18, 20, 22 can be the same or different. Different size numerals for each of the different weft layer yarns 18, 20, 22 is indicative of a different weft yarn diameter in the preferred embodiment.

[0033] The first, second and third weft systems 12, 14, 16 are bound together by a plurality of warp systems 24. FIGS....

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

A fabric for papermaking usable in the forming section of a paper making machine, having a first weft system, a second weft system and a third weft system; and a plurality of warp systems, each warp system having at least one warp yarn, each warp yarn binding with one of the first weft system, the third weft system, the first and second weft systems, and the second and third weft systems; wherein a first warp system is an exchange warp system.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Not Applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not applicable. REFERENCE TO A COMPACT DISK APPENDIX [0003] Not applicable. BACKGROUND OF THE INVENTION [0004] 1. Field of the Invention [0005] The invention relates to a fabric used in papermaking. More specifically, the present invention relates to forming fabrics used in the forming section of a papermaking machine. [0006] 2. Description of Background [0007] In the art of papermaking, multiple steps occur from the introduction of a pulp slurry to the output of a finished paper product. The initial introduction of the slurry is at the portion of a papermaking machine known as the wet end. Here, the slurry, or fiber suspension, is initially dewatered when the slurry is introduced onto a moving forming fabric, in the forming section of the papermaking machine. Varying amounts of water is removed from the slurry through the forming fabric, resulting in...

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): D03D25/00
CPCD21F1/0045
Inventor QUIGLEY, SCOTT
Owner VOTH FABRICS PATENT GMBH
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