Claims
- 1. A woven papermakers fabric having top and bottom sides comprising:
- a single layer of first system yarns;
- a second system of yarns including at least a first subsystem of yarns interwoven with said layer of first system yarns in a selected repeat pattern; and
- said first subsystem yarns of said second system repeating with respect to four yarns of said single layer of first system yarns with a float over three of said single layer of first system yarns and woven in a balanced weave pattern where said first subsystem yarns consist of a repeat of only two types of alternating adjacent yarns, the first type floating over every first, second and third first system yarns and weaving under every fourth yarn in each repeat, the second type floating over every third, fourth and first first system yarns and weaving under every second first system yarn in each repeat such that said first subsystem yarns impart crimp to every said second and fourth first system yarn in each repeat, whereby said subsystem of second system yarns define floats on the top side of the fabric.
- 2. A woven papermakers fabric according to claim 1 wherein:
- said second system of yarns includes a second subsystem of yarns interwoven with said single layer of first system yarns in a selected repeat pattern; and
- said second subsystem yarns repeating with respect to four yarns of said single layer of first system yarns with a float under three of said single layer of first system yarns and woven in a balance weave pattern where said second subsystem yarns consist of two types of alternating adjacent yarns, the first type floating under every first, second and third first system yarns and weaving over every fourth first system yarn in each repeat, the second type floating under every third, fourth and first first system yarns and weaving over every second first system yarn in each repeat such that said second subsystem yarns impart crimp to the same first system yarns which are crimped by said first subsystem yarns, whereby said second subsystem of second system yarns define floats on the bottom side of the fabric.
- 3. A woven papermakers fabric according to claim 2 wherein said first system yarns are round cross machine direction yarns and said second system yarns are flat monofilament machine direction yarns.
- 4. An industrial fabric comprising a single layer of CMD yarns interwoven with a system of MD yarns, characterized in that alternate CMD yarns are crimped to a significantly greater degree than the respective adjacent other CMD yarns in said single CMD layer by at least some of said MD yarns weaving knuckles around each said alternate CMD yarns and all of said MD yarns weaving in floats either over or under said other CMD yarns.
- 5. A fabric according to claim 4 wherein said:
- MD yarns are flat monofilament yarns having paired upper and lower yarns stacked in vertical alignment; and
- at least said upper MD yarns are woven with an actual warp fill in the range of 80%-125%.
- 6. A fabric according to claim 4 wherein CMD yarns alternate between a first relatively larger diameter and a second relatively smaller diameter in said single CMD layer.
- 7. A fabric according to claim 4 wherein said CMD yarns are flat monofilament yarns having an aspect ratio greater than 3:1.
- 8. A fabric according to claim 4 wherein said CMD yarns include yarns of at least two different diameters and are interwoven in a selected repeat pattern such that the CMD yarns having the relatively smaller diameter are crimped significantly more than the CMD yarns having the relatively larger diameter.
- 9. A fabric according to claim 8 wherein said:
- MD yarns are flat monofilament yarns having paired upper and lower yarns stacked in vertical alignment; and
- at least said upper MD yarns are woven with an actual warp fill in the range of 80%-125%.
- 10. A fabric according to claim 8 wherein the CMD yarns alternate between a first relatively larger diameter and a second relatively smaller diameter in said single CMD layer.
- 11. A fabric according to claim 8 wherein said CMD yarns are flat monofilament yarns having an aspect ratio greater than 3:1.
- 12. A fabric according to claim 4 wherein said MD yarns repeat with respect to four of said CMD yarns with a float of three such that first and third CMD yarns within the float are not the CMD yarns which have the significantly greater degree of crimp.
- 13. A fabric according to claim 12 wherein said CMD yarns are flat monofilament yarns having an aspect ratio greater than 3:1.
- 14. A fabric according to claim 4 wherein the float of some of said MD yarns is over three CMD yarns and the float of other of said MD yarns is under three CMD yarns within a fabric repeat.
- 15. A fabric according to claim 14 wherein said CMD yarns are flat monofilament yarns having an aspect ratio greater than 3:1.
- 16. A fabric according to claim 4 wherein each of the MD yarns which have floats under the CMD yarns are disposed beneath at least one MD yarn which has its float weaving over the CMD yarns.
- 17. A fabric according to claim 16 wherein said CMD yarns include yarns of at least two different diameters and are flat monofilament yarns having an aspect ratio greater than 3:1.
- 18. A woven papermakers fabric having top and bottom sides comprising:
- a single layer of cross machine direction yarns;
- a system of machine direction yarns including at least a first subsystem of yarns interwoven with said layer of cross machine direction yarns in a selected repeat pattern; and
- said first subsystem of yarns repeating with respect to four yarns of said single layer of cross machine direction with a float over three of said single layer of cross machine direction and woven in a balanced weave pattern where said first subsystem yarns consist of a repeat of only two types of alternating adjacent yarns, the first type floating over every first, second and third cross machine direction yarns and weaving under every fourth cross machine direction yarn in each repeat, the second type floating over third, fourth and first cross machine direction yarns and weaving under every second cross machine direction yarn in each repeat such that said first subsystem machine direction yarns impart crimp to every said second and fourth cross machine direction yarn in each repeat, whereby said first subsystem machine direction yarns define floats on the top side of the fabric.
- 19. A woven papermakers fabric according to claim 18 wherein:
- said system of machine direction yarns includes a second subsystem of yarns interwoven with said single layer of cross machine direction yarns in a selected repeat pattern; and
- said second subsystem of yarns repeating with respect to four yarns of said single layer of cross machine direction yarns with a float under three of said single layer of cross machine direction yarns and woven in a balanced weave pattern where said second subsystem yarns consist of a repeat of two types of alternating adjacent yarns, the first type floating under every first, second and third cross machine direction yarns and weaving over every fourth cross machine direction yarn in each repeat, the second type floating under every third, fourth and first cross machine direction yarns and weaving over every second cross machine direction yarn in each repeat such that said second subsystem machine direction yarns impart crimp to every said second and fourth cross machine direction yarn in each repeat, whereby said second subsystem machine direction yarns define floats on the bottom side of the fabric.
- 20. A woven papermakers fabric according to claim 19 wherein said cross machine direction yarns are round yarns; said machine direction yarns are flat yarns; and said first subsystem machine direction yarns are stacked in vertical alignment with respect to said second subsystem machine direction yarns.
- 21. A woven papermakers fabric comprising a system of CMD (cross-machine direction) yarns interwoven with a system of MD (machine direction) yarns in a balanced repeat pattern wherein said fabric comprises at least a first layer of MD yarns interwoven in a selected repeat pattern with at least a first layer of said CMD yarns wherein the selected repeat pattern of said first layer of MD yarns includes a repeat of only first and second flat monofilament MD yarns; said first flat first layer MD yarn floating over every first, second and third CMD yarns of said first CMD layer and weaving under every fourth yarn of said first CMD layer in each repeat; and said second flat first layer MD yarns floating over every third, fourth and first CMD yarns of said first CMD layer and weaving under every second yarn of said first CMD layer in each repeat such that said first layer of MD yarns impart crimp to said second and fourth first layer CMD yarns, but do not impart crimp to said first and third first layer CMD yarns.
- 22. A papermakers fabric according to claim 21 wherein said first and second flat first layer MD yarns have an aspect ratio greater than 3:1.
- 23. A papermakers fabric according to claim 21 wherein said first layer CMD yarns are round and alternate between a first diameter and a second diameter different from said first diameter.
- 24. A papermakers fabric according to claim 21 wherein the selected repeat pattern of said first layer MD yarns consists of said first and second flat MD yarns.
- 25. A papermakers fabric according to claim 21 wherein said MD yarn system includes a second layer of MD yarns interwoven with said system of CMD yarns in a balance repeat pattern including at least one flat monofilament second layer MD yarn woven in stacked vertical alignment beneath each of said first and second flat monofilament first layer MD yarns.
- 26. A papermakers fabric according to claim 25 wherein the repeat pattern of said second layer MD yarns includes only first and second flat monofilament second layer MD yarns; said first flat second layer MD yarn floating under every first, second and third CMD yarns of a CMD yarn layer and weaving over every fourth CMD yarn of a CMD yarn layer in each repeat; and said second flat second layer MD yarn floating under every third, fourth and first CMD yarn of a layer of CMD yarns and weaving over every second CMD yarn of a layer of CMD yarns.
- 27. A papermakers fabric according to claim 26 wherein said CMD yarn system consists of said first layer of CMD yarns and both said first layer and second layer flat monofilament MD yarns weave with said first layer CMD yarns.
- 28. A papermakers fabric according to claim 26 wherein said first and second flat second layer MD yarns have an aspect ratio greater than 3:1.
- 29. A papermakers fabric according to claim 26 wherein said CMD yarns are all round and have the same diameter.
- 30. A papermakers fabric according to claim 26 wherein the repeat pattern of said first layer MD yarns consists of said first and second flat MD yarns.
Parent Case Info
This is a continuation of application Ser. No. 08/288,158, filed on Aug. 10, 1994, now U.S. Pat. No. 5,449,026, which in turn is a file wrapper continuation of application Ser. No. 08/043,016 filed Apr. 5, 1993, which is a continuation of application Ser. No. 07/855,904, filed on Apr. 13, 1992, now U.S. Pat. No. 5,199,467, which in turn is a continuation of application Ser. No. 07/534,164 filed Jun. 6, 1990, now U.S. Pat. No. 5,103,874.
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Continuations (4)
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Number |
Date |
Country |
Parent |
288158 |
Aug 1994 |
|
Parent |
43016 |
Apr 1993 |
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Parent |
855904 |
Apr 1992 |
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Parent |
534164 |
Jun 1990 |
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