Papermakers fabric having a tight bottom weft geometry

Details Papermakers fabric having a tight bottom weft geometry Papermakers fabric having a tight bottom weft geometry

1984-12-21

1987-02-10

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

28158, 139383A, 162DIG1, 428229, 428257, D03D 300

Patent

active

046422617

ABSTRACT:
A two-face, double-layer forming fabric having a tight bottom weft geometry. The fabric, in general, comprises first and second pluralities of cross-machine direction yarns and a plurality of machine direction yarns interwoven in accordance with a desired weave pattern to define a top layer and a bottom layer. The top layer, which receives paper stock, is defined by the first plurality of cross-machine direction yarns. The bottom layer, which contacts machine rolls, is defined by the second plurality of cross-machine direction yarns. The second plurality of yarns are heat shrinkable.
In one embodiment of the fabric, all machine direction yarns are woven in an 8-shaft weave to provide a 1/3 twill on the top layer and a 1/7 twill on the bottom layer. The cross-machine direction floats formed by this weave pattern are flattened during heat treatment of the fabric because of shrinkage of the bottom layer cross-machine direction yarns.

REFERENCES:
patent: 24007 (1955-05-01), Foster
patent: 3553066 (1971-01-01), Cavalier et al.
patent: 4107371 (1978-08-01), Dean
patent: 4182381 (1980-01-01), Gisbourne
patent: 4359069 (1982-11-01), Hahn
patent: 4408638 (1983-10-01), Strom
patent: 4467839 (1984-08-01), Westhead
patent: 4517687 (1985-05-01), Liebig et al.

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