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EP0089032A2
Expired / Lapsed
EP
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Papermaker's felt with a three-layered base fabric
Assignee: Huyck Corp
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Filing: 1983-03-11
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Granted: —
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Expires: 2003-03-11
Abstract
Abstract isclosed is a papermaker's felt comprising a woven three-layered base fabric construction (1, 5, 10, 15, 20) and a non-woven batting material (25). The bottom layer (15, 20) of the base fabric is made from coarse yarns with large diameters and the top two layers (1, 5,10) of fine yarns with smaller diameters. There are fewer yarns in the bottom layer (15, 20) of the base fabric than in either of the top two layers (1, 5, 10).
Inventors
- 👤 Frederick R. Smart
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 07:29
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10T; Y10T442/00; Y10T442/30; Y10T442/3146; Y10T442/50; Y10T442/56
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
126 words
A papermaker's felt comprising: a non-woven batting material (25); and a woven three-layered base fabric comprising: a bottom layer of cross-machine direction (15) and machine direction yarns (20); a middle layer (5,10) of fine yarns which has a higher crossmachine direction and machine direction yarn count than the bottom layer and in which the cross-machine direction and machine direction yarn diameters are smaller than the diameters of the crossmachine direction and machine direction yarns in the bottom layer; and a top layer of fine yarns (1) which uses the same cross-machine direction yarn (5) as the middle layer and which has the same or higher machine direction yarn count than the middle layer and the same or smaller machine direction yarn diameters than the middle layer.
Claim 2
Dependent Claim
126 words
A papermaker's felt comprising: a non-woven batting material (25); and a woven three-layered base fabric comprising: a bottom layer of cross-machine direction (15) and machine direction yarns (20); a middle layer (5,10) of fine yarns which has a higher crossmachine direction and machine direction yarn count than the bottom layer and in which the cross-machine direction and machine direction yarn diameters are smaller than the diameters of the crossmachine direction and machine direction yarns in the bottom layer; and a top layer of fine yarns (1) which uses the same cross-machine direction yarn (5) as the middle layer and which has the same or higher machine direction yarn count than the middle layer and the same or smaller machine direction yarn diameters than the middle layer.
Claim 3
Dependent Claim
28 words
The papermaker's felt according to claim 1 wherein the non-woven batting material (25) is needled to the top two layers (5, 10) of the woven three-layered base fabric.
Claim 4
Dependent Claim
28 words
The papermaker's felt according to claim 1 or 2 wherein the crossmachine direction yarn (5) in the upper two layers interlaces the two top fabric layers (1, 10).
Claim 5
Dependent Claim
42 words
The papermaker's felt according to any of claims 1 to 3, wherein the bottom layer (15, 20) is connected to the middle layer by interlacing of the bottom crossmachine direction yarn (15) around the middle machine direction yarn (10) at various intervals.
Claim 6
Dependent Claim
31 words
The papermaker's felt according to any of claims 1 to 4, wherein the bottom layer (15, 20) contains eight yarns per inch in both the machine direction and the cross-machine direction.
Claim 7
Dependent Claim
44 words
The papermaker's felt according to any of claims 1 to 5, wherein there are at least twice as many machine direction and cross-machine direction yarns per inch in either of the upper layers (1, 10) as there are in the bottom layer (15, 20).
Claim 8
Dependent Claim
27 words
The papermaker's felt according to any of claims 1 to 6, wherein the cross-machine direction yarn (5) interlacing the two top fabric layers (1,10) is a monofilament.
Claim 9
Dependent Claim
28 words
The papermaker's felt according to any of claims 1 to 7, wherein the cross-machine direction yarn (5) interlacing the two top fabric layers (1,10) is a twisted monofilament.
Claim 10
Dependent Claim
27 words
The papermaker's felt according to any of claims 1 to 8, wherein the cross-machine direction yarn (13 in the bottom layer is comprised of multi- milament fibers.
Claim 11
Dependent Claim
28 words
The papermaker's felt according to any of claims 1 to 9, wherein the cross-machine direction yarn (15) in the bottom layer is comprised of resin treated multifilament fibers.
Claim 12
Dependent Claim
26 words
The papermaker's felt according to any of claims 1 to 10 wherein the cross-machine direction yarn (15) in the bottom layer is comprised of staple fibers.
Claim 13
Dependent Claim
26 words
The papermaker's felt according to any of claims 1 to 11, wherein the machine direction yarn (20) in the bottom layer is comprised of multifilament fibers.
Claim 14
Dependent Claim
28 words
The papermaker's felt according to any of claims 1 to 12, wherein the machine direction yarn (20) in the bottom layer is comprised of resin treated multifilament fibers.
Claim 15
Dependent Claim
26 words
The papermaker's felt according to any of claims 1 to 13, wherein the machine direction yarn (20) in the bottom layer is comprised of staple fibers.
Claim 16
Dependent Claim
24 words
The papermaker's felt according to any of claims 1 to 14, wherein the machine direction yarn (10) in the middle layer is a monofilament.
Claim 17
Dependent Claim
25 words
The papermaker's felt according to any of claims 1 to 15, wherein the machine direction yarn (10) in the middle layer is a twisted monofilament.
Claim 18
Dependent Claim
27 words
The papermaker's felt according to any of claims 1 to 16, wherein the machine direction yarn (10) in the middle layer is comprised of resin treated multifilament.
Claim 19
Dependent Claim
24 words
The papermaker's felt according to any of claims 1 to 17, wherein the machine direction yarn (1) in the top layer is a monofilament.
Claim 20
Dependent Claim
25 words
The papermaker's felt according to any of claims 1 to 18, wherein the machine direction yarn (1) in the top layer is a twisted monofilament.
Claim 21
Dependent Claim
25 words
The papermaker's felt according to any of claims 1 to 19, wherein the machine direction yarn (1) in the top layer comprises resin treated multifilaments.
Claim 22
Dependent Claim
28 words
The papermaker's felt according to any of claims 1 to 20, wherein the machine direction yarn (1) in the top layer comprises staple or low twist multifilament fibers.
Claim 23
Dependent Claim
28 words
The papermaker's felt according to any of claims 1 to 21, wherein the three-layered base fabric is woven endless using two warp beams and three or more shuttles.
Claim 24
Dependent Claim
36 words
The papermaker's felt according to any of claims 1 to 21, wherein the base layer (15, 20) and the upper two layers (1,5,10) are woven separately and the two fabrics are then later combined through needling.
References Cited (Backward Citations)
No citation records indexed.
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