Paper machine clothing and a method of coating same
AssigneeAlbany International Corp.
InventorsChad Aaron Martin, Bryan Casteel
Life of this patent
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Abstract
The present invention is directed to fabrics for paper making machines that are rendered contamination resistant, maintain good permeability, and enhanced seam strength as a result of a durable coating that lasts the entire life of the fabric. A polyurethane based coating containing a fluorochemical will render the fabric contamination resistant over the entire fabric lifetime. It has been found that optical brighteners and titanium dioxide also enhance fabric appearance.
Claims69
A papermachine clothing for use in the forming, pressing or drying section of a papermaking machine comprised of a fabric having a high degree of openness which is constructed of yarns coated with at least one layer of a urethane-based coating including a copolymer of perfluoroalkyl acrylates or perfluoroalkyl methacrylates, wherein the clothings exhibit an improved resistance to contamination.
A papermachine clothing for use in the forming, pressing or drying section of a papermaking machine comprised of a fabric having a high degree of openness which is constructed of yarns coated with at least one layer of a urethane-based coating including a copolymer of perfluoroalkyl acrylates or perfluoroalkyl methacrylates, wherein the clothings exhibit an improvement in resistance to contamination and an improvement in either seam strength, shear stability, or both, when compared to noncoated fabrics.
A contamination resistant papermachine clothing for use in the forming, pressing or drying section of a papermaking machine comprised of a fabric having a high degree of openness which is constructed of yarns coated with a coating including a polyurethane, a copolymer of perfluoroalkyl acrylates or perfluoroalkyl methacrylates, and an optical brightener.
A contamination resistant papermachine clothing for use in the forming, pressing or drying section of a papermaking machine comprised of a fabric having a high degree of openness which is constructed of yarns coated with a coating including a polyurethane, a copolymer of perfluoroalkyl acrylates or perfluoroalkyl methacrylates, an optical brightener, and a whitener.
A contamination resistant papermachine clothing for use in the forming, pressing or drying section of a papermaking machine comprised of a fabric having a high degree of openness which is constructed of yarns coated with a coating including a polyurethane, a copolymer of perfluoroalkyl acrylates or perfluoroalkyl methacrylates, an optical brightener, and a whitener, wherein the resistance to contamination is exhibited over the lifetime of the fabric and the fabric exhibits a reduction in air permeability of no greater than about 10%.
A method of imparting contamination resistance to paper machine clothings comprised of the steps of applying at least one layer of a coating to a fabric having a high degree of openness which is constructed of yarns, wherein the coating includes a polyurethane, a copolymer of perfluoroalkyl acrylates or perfluoroalkyl methacrylates, an optical brightener, and a whitener, and drying the coated fabric.
Dependencies are inferred from the claim text.