Monofilaments to offset curl in warp bound forming fabrics

Details Monofilaments to offset curl in warp bound forming fabrics Monofilaments to offset curl in warp bound forming fabrics

2006-05-24

2009-12-15

Muromoto, Jr., Bobby H (Department: 3765)

Textiles: weaving

Fabrics

Drier felts

C139S38300A, C162S358200

Reexamination Certificate

active

07631669

ABSTRACT:
A papermaking fabric having a top layer and a bottom layer of interwoven machine direction (MD) yarns and cross-machine direction (CD) yarns bound together with warp binder yarns. At least some of the CD yarns are made of a material which generates a strong contractive force when returned to room temperature after heat-setting (annealing under MD tension). These CD yarns are positioned such that the strong contractive force offsets tension forces generated when the fabric is placed under load and which typically result in an edge curl. An exemplary material for these CD yarns is polybutylene terephthalate (PBT).

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