Multiple ply dewatering screen

Details Multiple ply dewatering screen Multiple ply dewatering screen

D - Textiles, Paper

21

F

92/17.7

D21F 1/10 (2006.01) D21F 1/00 (2006.01)

Patent

CA 1226463

ABSTRACT OF THE DISCLOSURE A paper web forming screen includes a two-ply screen fabric of longitudinal and traversefilamentary elements. The upper ply is made of longitudinal and traverse mono- or multi- or staple- filaments whereas a part of longitudinal and/or traverse filamen- tary elements in the lower ply is made of mono- or multi- or staple- filaments and other parts of non-twisted bundles of component filaments. A component filament in respective bundles is passed at different tie points over traverse mono- or multi- or staple- filaments in the upper ply to replace a longitudinal mono- or multi- or staple-filament in the upper ply. The latter mono- or multi- or staple-filament is passed either below the traverse mono- or multi- or staple-filaments in the tie points or below traverse filaments in the lower ply. The component filaments in the bundles are of the same thickness as the longitudinal and traverse mono- or multi- or staple-filaments in the upper ply.

458822

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