Loop formation in on-machine-seamed press fabrics using unique yarns
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United States of America Patent
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Feb 21, 1995
Issued Date -
N/A
app pub date -
Apr 24, 1992
filing date -
Aug 17, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A press fabric for use on papermaking and similar machines is of the open-ended variety, and has loops at each end enabling it to be closed into endless form during installation on the machine by means of a pin seam. The machine-direction (MD) yarns, from which the loops are formed during the flat or endless weaving of the fabric, are composite yarns having a core yarn with a sleeve-like coating. The coating, either permanent, semi-permanent, or soluble, gives the composite yarn a monofilament-like structure enabling good loop formation and stability. The use of multifilament yarn as the core yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of resiliency, following the removal of a soluble coating material, than can be obtained using monofilament yarn.
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