Shoe press belt having a grooved surface
DCFirst Claim
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1. A belt for minimizing ingoing nip spray in a shoe press, the belt comprising:
- a base fabric having an inner and outer surface;
a resin coating layer formed on a sheet side or outer surface of said base fabric and substantially co-extensive therewith; and
a plurality of grooves formed in said resin coating layer, wherein at least one of said grooves consists of a zigzag portion having a length, wherein the length of the zigzag portion is less than a length of an arcuate pressure shoe in the shoe press.
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Abstract
A belt for use in a long nip press having an arcuate pressure shoe. The belt has at least one layer having a polymer resin coating on at least one surface thereof. The resin coating has a plurality of grooves arranged therein and wherein a number of the grooves has a length less than a length of the arcuate pressure shoe to reduce ingoing nip spray.
23 Citations
41 Claims
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1. A belt for minimizing ingoing nip spray in a shoe press, the belt comprising:
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a base fabric having an inner and outer surface; a resin coating layer formed on a sheet side or outer surface of said base fabric and substantially co-extensive therewith; and a plurality of grooves formed in said resin coating layer, wherein at least one of said grooves consists of a zigzag portion having a length, wherein the length of the zigzag portion is less than a length of an arcuate pressure shoe in the shoe press. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 18, 19)
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14. A belt for minimizing ingoing nip spray in a shoe press, the belt comprising:
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a base fabric having an inner and outer surface; a resin coating layer formed on a sheet side or outer surface of said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein the grooves are square, rectangular, zigzag, triangular, circular, sinusoidal or polygonal in shape. - View Dependent Claims (15, 16)
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17. A belt for minimizing ingoing nip spray in a shoe press, the belt comprising:
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a base fabric having an inner and outer surface; a resin coating layer formed on a sheet side or outer surface of said base fabric and substantially co-extensive therewith; one or more continuous cross-machine direction grooves formed in said resin coating layer; and a plurality of discontinuous cross machine and/or machine direction grooves formed in the resin coating layer.
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20. A method of minimizing ingoing nip spray in a shoe press, the method comprising the steps of:
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providing a base fabric for a press belt having an inner and outer surface; depositing a polymeric resin on a sheet side or outer surface of the base fabric; and forming a plurality of grooves in said polymeric resin, wherein at least one of said grooves consists of a zigzag portion having a length, wherein the length of the zigzag portion is less than a length of an arcuate pressure shoe in the shoe press. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 38, 39)
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34. A method of minimizing ingoing nip spray in a shoe press, the method comprising the steps of:
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providing a base fabric for a press belt having an inner and outer surface; depositing a polymeric resin on a sheet side or outer surface of the base fabric; and forming a plurality of discontinuous grooves in said polymeric resin, wherein the grooves are square, rectangular, zigzag, triangular, circular, sinusoidal or polygonal in shape. - View Dependent Claims (35, 36)
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37. A method of minimizing ingoing nip spray in a shoe press, the method comprising the steps of:
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providing a base fabric for a press belt having an inner and outer surface, depositing a polymeric resin on a sheet side or outer surface of the base fabric; and forming one or more continuous cross-machine direction grooves formed in said resin coating layer; and forming a plurality of discontinuous cross machine and/or machine direction grooves formed in the resin coating layer.
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40. A belt for minimizing ingoing nip spray in a shoe press, the belt comprising:
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a base fabric having an inner and outer surface; a resin coating layer formed on a sheet side or outer surface of said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein the grooves have a varying width and/or varying depth along a length thereof.
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41. A method of minimizing ingoing nip spray in a shoe press, the method comprising the steps of:
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providing a base fabric for a press belt having an inner and outer surface; depositing a polymeric resin on a sheet side or outer surface of the base fabric; and forming a plurality of discontinuous grooves in said polymeric resin, wherein the grooves have a varying width and/or varying depth along a length thereof.
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Specification