Shoe press belt having a grooved surface
DCFirst Claim
Patent Images
1. A belt for use in a shoe press comprising:
- a base fabric;
a resin coating layer formed on said base fabric and substantially co-extensive therewith; and
a plurality of discontinuous grooves formed in said resin coating layer, wherein at least one of said grooves includes a first portion having a width which is greater than a width of a second portion.
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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.
21 Citations
52 Claims
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1. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein at least one of said grooves includes a first portion having a width which is greater than a width of a second portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein the grooves are parallel to one another and are off-set from one another in the machine direction by a non-uniform distance.
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14. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and
a plurality of discontinuous grooves formed in said resin coating layer, wherein the grooves are parallel to one another and are staggered from one another in a non-repeating pattern.
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15. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous machine direction grooves formed in said resin coating layer, wherein said grooves are formed of a combination of one or more groove features selected from the group consisting of groove shape, depth, and angular orientation, and wherein at least one of said grooves includes a first portion having a width which is greater than a width of a second portion to reduce ingoing nip spray.
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16. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of grooves formed in said resin coating layer, wherein said grooves are formed of a combination of one or more groove features selected from the group consisting of groove shape, depth, width, and angular orientation, wherein said grooves include a first portion which is straight and a second portion which is sinusoidal or zigzag, both of which extend substantially in the machine direction. - View Dependent Claims (17, 18)
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19. A method of minimizing ingoing nip spray in a shoe press belt comprising the steps of:
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providing a base fabric for a press belt; depositing a polymeric resin on the base fabric; and forming a plurality of discontinuous grooves in said polymeric resin, wherein said grooves are formed of a combination of one or more groove features selected from the group consisting of groove shape, depth, and angular orientation, and wherein at least one of said grooves includes a first portion having a width which is greater than a width of a second portion to reduce ingoing nip spray.
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20. A method of minimizing ingoing nip spray in a shoe press belt comprising the steps of:
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providing a base fabric for a press belt; depositing a polymeric resin on the base fabric; and forming a plurality of grooves in said polymeric resin, wherein said grooves are formed of a combination of one or more groove features selected from the group consisting of groove shape, depth, width, and angular orientation. wherein said grooves include a first portion which is straight and a second portion which is sinusoidal or zigzag, both of which extend substantially in the machine direction. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of continuous cross-machine direction grooves formed in said resin coating layer, wherein said grooves are formed of a combination of two or more groove features selected from the group consisting of groove shape, depth, width and angular orientation. - View Dependent Claims (37, 38, 39, 40, 41)
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42. 36 A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of continuous cross-machine direction grooves formed in said resin coating layer, which also includes a plurality of discontinuous machine direction grooves formed in the resin coating layer.
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43. A method of minimizing the ingoing nip spray in a shoe press belt comprising the steps of:
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providing a base fabric for a press belt; depositing a polymeric resin on the base fabric; and forming a plurality of grooves in said polymeric resin, wherein at least one of said grooves includes a first portion having a width which is greater than a width of a second portion. - View Dependent Claims (44, 45)
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46. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein said grooves include a first portion which is straight and a second portion which is sinusoidal or zigzag, both of which extend substantially in the machine direction.
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47. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on a face side of said base fabric and substantially co-extensive therewith; and a plurality of discontinuous cross-machine direction grooves formed in said resin coating layer, which remain open in operation.
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48. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on a face side of said base fabric and substantially co-extensive therewith; and a plurality of discontinuous cross-machine direction grooves formed in said resin coating layer, which also includes a plurality of discontinuous machine direction grooves formed in the resin coating layer.
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49. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein said grooves are formed substantially in the machine direction and said grooves have a varying width and varying depth along a length thereof.
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50. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein said grooves are formed substantially in the cross-machine direction and said grooves have a varying width and varying depth along a length thereof.
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51. A belt for use in a shoe press comprising:
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a base fabric; a resin coating layer formed on said base fabric and substantially co-extensive therewith; and a plurality of discontinuous grooves formed in said resin coating layer, wherein the grooves are formed substantially in the machine direction, wherein the machine direction length of said grooves is less than the machine direction length of a shoe portion of said long nip press, and wherein at least one of said grooves has a varying depth along its length. - View Dependent Claims (52)
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Specification