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Single layer papermakers fabric

A technology for paper machines and fabrics, which is applied in the field of air-drying and paper or tulle fabric formation, and can solve problems such as deformation and wrinkles without mechanical strength

Inactive Publication Date: 2009-04-08
ASTENJOHNSON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, single-ply fabrics do not have the mechanical strength of double- or multi-ply fabrics to actively be prone to thinning, deformation, and wrinkling, which are not desirable

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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  • Single layer papermakers fabric
  • Single layer papermakers fabric
  • Single layer papermakers fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] Referring to FIG. 6 , there is shown a third embodiment of the present invention comprising an N×2N pattern, where N is ten. The ten warp yarns 100 are numbered across the top of the figure as yarns la through 5b, and the weft yarns 200 are numbered down the left side of the figure as yarns 1 through 20. However, the ten warp yarns 100 comprise five pairs, the two members of each pair labeled "a" and "b" yarns, following the same path with no offset from each other. For example, for warp yarns 1a and 1b, first portion 101 includes interweaving with weft yarns 1 and 3, second portion 102 floats above six weft yarns 200 (i.e., weft yarns 4 to 9) on the paper side, and third portion 103 includes interlacing with weft yarn 12. and 12, the second portion 102 floats on the paper side over the eight weft yarns 200 (ie, weft yarns 13 to 20). It can also be seen that between each "b" yarn of each pair and adjacent to the "a" yarn of the next pair, the first and second offset re...

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 single layer papermakers fabric comprises machine direction (MD) warp yarns interwoven with cross-machine direction (CD) weft yarns to a repeating weave pattern requiring N sheds in the loom, N being an integer and at least 4. Each warp yarn follows a path in the paper side surface comprising four segments in each pattern repeat. In each of the first and third segments, the warp yarn interweaves with three consecutive weft yarns to form a double warp knuckle, and in the second and fourth segments, the warp yarn forms respectively a first and second MD float having unequal float lengths, at least one of the MD floats being over at least N consecutive weft yarns. The fabrics provide high air permeability, and increased surface contact area, stability and seam strength, and are particularly suitable for use as forming fabrics and through air dryer fabrics for tissue and towel products.

Description

technical field [0001] The present invention relates to papermakers' fabrics, in particular to papermakers' fabrics comprising a single layer of interwoven, warp and weft yarns woven according to a weave pattern that is repeated at each repeat of the pattern for Each warp yarn provides two different warp float lengths, with each warp float separated from the next warp float by a double warp knot (double warpknuckle) in the machine direction (MD) of the fabric. The new weave pattern for the MD oriented pattern on the web conveyed in connection with the fabric surface provides improved seam strength over prior art single layer designs and high fabric air permeability , without undue loss of structural stability. The new fabrics of the present invention are woven according to a fabric pattern that can be characterized by an N x 2N or N x 4N design, where N is the number of sheds of the loom and ranges from 4 to 12 or more within range. In one embodiment, the use of warp yarns ...

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(China)
IPC IPC(8): D03D25/00D03C15/04
CPCD21F1/0027
Inventor R·贝瑞特R·帕特尔
Owner ASTENJOHNSON
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