Papermaking forming fabric with long bottom CMD yarn floats
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United States of America Patent
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Sep 18, 2012
Grant Date -
Jun 14, 2012
app pub date -
Dec 6, 2011
filing date -
Dec 13, 2010
priority date (Note) -
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Abstract
A papermaking forming fabric includes a series of repeat units, wherein each repeat units includes: a set of top machine direction (MD) yarns; a set of top cross-machine direction (CMD) yarns interwoven with the top MD yarns to form a top fabric layer; a set of bottom MD yarns; a set of bottom CMD yarns interwoven with the bottom MD yarns to form a bottom fabric layer; and a set of stitching yarns interwoven with the top and bottom fabric layers. The bottom MD yarns and bottom CMD are woven such that floats formed by the bottom CMD yarns under the bottom MD yarns are at least 1.8 mm in length. A first ratio of top MD yarn coverage area to bottom MD yarn coverage area is less than 0.5, and a second ratio of bottom CMD yarn cross-sectional area to bottom MD yarn cross-sectional area is greater than 2.0.
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