Multiple ply dewatering screen particularly for a web forming part of a paper making machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 14, 1986
Grant Date -
N/A
app pub date -
Jul 12, 1984
filing date -
Jul 16, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A paper web forming screen includes two screen fabric plies made of longitudinal and traverse filamentary elements. The upper ply is made of longitudinal and traverse mono- or multi- or staple-filaments whereas a part of longitudinal and/or traverse filamentary 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.
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Family
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Cited Art Landscape
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