D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/10 (2006.01) D21F 7/08 (2006.01)
Patent
CA 2107457
Hollow synthetic monofilament yarns are used in the construction of a base fabric for a papermakers wet felt. The synthetic hollow monofilament yarns have selected interior void, compressibility and resiliency characteristics and are interwoven with other yarns to form a woven base fabric with the hollow monofilament yarns predominating, on at least the paper carrying side of the base fabric. The weaving and finishing of the base fabric results in the hollow monofilament yarns retaining a substantially unflattened cross-section. Accordingly, substantially unflattened portions of the hollow monofilament yarns predominate the paper carrying side of the base fabric thereby providing a cushioning surface which is compressibly resilient to assist in the dewatering of the aqueous paper web as it is transported through a press nip during the manufacture of the paper. Hollow nylon monofilament yarns having approximately 18% internal core void have been found to exhibit the desired compressibility and resiliency characteristics. Preferably a fibrous batt is needled to the base fabric to finish the wet press felt.
Cunnane Francis J. III
Sanders H. Thomas
Astenjohnson Inc.
Carson James William
LandOfFree
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