US6080691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing high-bulk tissue webs using nonwoven substrates
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1998-06-03
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Granted: 2000-06-27
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Expires: 2018-06-03
Abstract
Abstract The invention relates to a papermaking fabric and method of producing a soft, bulky tissue web in which an embryonic fiber web is wet-molded onto a three-dimensional substrate wherein the web-contacting surface of said substrate is a three-dimensional porous nonwoven material. The method can provide higher levels of bulk and surface depth in tissues than is practical with woven papermaking fabrics.
Inventors
- 👤 Jeffrey Dean Lindsay
- 👤 Mark Alan Burazin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/006; Y; Y10; Y10S; Y10S162/00; Y10S162/903; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/26; Y10T442/00; Y10T442/60; Y10T442/659
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
A papermaking fabric comprising an upper porous nonwoven member and an underlying porous member supporting said upper porous member wherein: (1) the upper porous nonwoven member comprises a material selected from the group consisting of a fibrous nonwoven web, a scrim, an extruded polymeric network, an open-cell foam and an extruded polymeric foam, having a Low Pressure Compressive Compliance greater than 0.05, a High Pressure Compressive Compliance greater than 0.05, and an Upper Surface Depth of at least 0.1 mm; and (2) the permeability of said wet molding substrate is sufficient to permit an air pressure differential across the wet molding substrate to effectively mold said web onto said upper porous nonwoven member to impart a three-dimensional structure to said web.
Claim 2
Dependent Claim
121 words
A papermaking fabric comprising an upper porous nonwoven member and an underlying porous member supporting said upper porous member wherein: (1) the upper porous nonwoven member comprises a material selected from the group consisting of a fibrous nonwoven web, a scrim, an extruded polymeric network, an open-cell foam and an extruded polymeric foam, having a Low Pressure Compressive Compliance greater than 0.05, a High Pressure Compressive Compliance greater than 0.05, and an Upper Surface Depth of at least 0.1 mm; and (2) the permeability of said wet molding substrate is sufficient to permit an air pressure differential across the wet molding substrate to effectively mold said web onto said upper porous nonwoven member to impart a three-dimensional structure to said web.
Claim 3
Dependent Claim
20 words
The fabric of claim 1, wherein said upper porous nonwoven member of said wet molding substrate comprises a fibrous material.
Claim 4
Dependent Claim
34 words
The fabric of claim 1, wherein said upper porous nonwoven member of said wet molding substrate comprises a foam-based material selected from the group consisting of an open-cell foam and an extruded polymeric foam.
Claim 5
Dependent Claim
13 words
The fabric of claim 3, wherein said foam-based material is an extruded material.
Claim 6
Dependent Claim
26 words
The fabric of claim 1, wherein said upper porous nonwoven member of said wet molding substrate has an Upper Surface Depth of at least 0.5 mm.
Claim 7
Dependent Claim
21 words
The fabric of claim 1, wherein said upper porous nonwoven member of said wet molding substrate comprises a fibrous ceramic material.
Claim 8
Dependent Claim
34 words
The fabric of claim 1, wherein the surface of the upper porous nonwoven member lacks precipitous features as determined by a threshold height of 0.5 millimeters and a line segment width of 300 microns.
Claim 9
Dependent Claim
13 words
The fabric of claim 7 wherein the line segment width is 100 microns.
References Cited (Backward Citations)
CA873651A
Cited
US3309263A
Cited
US4072557A
Cited
US4440597A
Cited
US4541895A
Cited
EP0140404A1
Cited
US4529480A
Cited
US4849054A
Cited
US5048589A
Cited
US5230371A
Cited
US5364504A
Cited
US5069548A
Cited
US5330604A
Cited
GB2254288A
Cited
US5366785A
Cited
US5348620A
Cited
US5501768A
Cited
US5366786A
Cited
GB2279372A
Cited
US5508095A
Cited
US5429686A
Cited
EP0677612A2
Cited
US5454405A
Cited
US5512319A
Cited
US5593545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-27 | 2003-12-27 | 2004-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-27 | 2007-12-27 | 2008-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-27 | 2011-12-27 | 2012-06-27 | $7700.00 | Window Closed / Lapsed |