Textile substrate for a long nip press belt

Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...


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162901, 198847, D21F 302




A long nip press belt for a papermaking machine has a textile substrate impregnated and coated on at least one side with a polymeric resin material. The polymeric resin material is ground and buffed after being cured to provide the belt with a smooth surface and a uniform thickness. The textile substrate includes textile components (monofilaments, continuous fine filaments or staple fibers) having non-circular cross sections with a plurality of lobes. Such cross sections provide the textile components with a greater surface area than would be provided by components of equal denier having circular cross sections. As a consequence, the mechanical interlock and chemical bond or adhesion of the polymeric resin coating to the textile substrate are strengthened. In addition, the textile components having non-circular cross-sections with a plurality of lobes reduce the permeability of the textile substrate, so that polymeric resin material applied to one side may be prevented from flowing through to the other side.

patent: 4946731 (1990-08-01), Dutt
patent: 5097872 (1992-03-01), Laine et al.
patent: 5132141 (1992-07-01), Schun
patent: 5167771 (1992-12-01), Sayers et al.
patent: 5238537 (1993-08-01), Dutt
patent: 5361808 (1994-11-01), Bowen, Jr.
patent: 5364692 (1994-11-01), Bowen, Jr. et al.
patent: 5449548 (1995-09-01), Bowen, Jr.
patent: 5495935 (1996-03-01), Zabron et al.


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