US5102501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple layer fibrous web products of enhanced bulk and method of manufacturing same
Assignee: Georgia Pacific Consumer Products LP
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Filing: 1988-07-07
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Granted: 1992-04-07
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Expires: 2008-07-07
Abstract
Abstract Absorbent paper products, such as towels, absorbent wipes, toilet tissue, facial tissue and the like fibrous webs of relatively high bulk, are produced by a method comprising the steps of treating hydrophilic cellulosie fibers to impart kinks, curls, bends, twists, to the fibers; dispersing the treated fibers in an aqueous forming medium, and wet-forming a stratified single-ply web constituted of at least one stratum of the treated fibers and at least one stratum of conventional paper-making fibers. The treating step may consist of wet or dry mechanical working, chemical treatment or a combination of mechanical and chemical treatments. The web forming step comprises preparing a first aqueous furnish of the treated fibers, preparing a second aqueous furnish of the conventional fibers, and concurrently depositing the two furnishes in contiguous layers on a moving foraminous support.
Inventors
- 👤 Robert J. Eber
- 👤 Bruce W. Janda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:10
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/001; D21C9/007; D21F; D21F11/00; D21F11/002; D21F11/14; D21H; D21H15/00; D21H15/02; D21H15/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
In a process for production of a fibrous web towel or tissue product of enhanced softness, absorbency and bulk, the steps comprising: (a) forming treated dry cellulosic papermaking fibers characterized by twists, kinks, curls, crimps, or the like by dry hammermilling wood papermaking fibers without substantial fibrillation or breakage of the fibers; (b) preparing an unfoamed aqueous furnish by dispersing said dry treated papermaking fibers in water; (c) depositing a layer of fibers from said furnish onto a moving foraminous support forming a fibrous web; and (d) removing water from the fibrous web within a period of time not greater than about five minutes after the time of initial contact of the treated dry fibers with the water.
Claim 2
Dependent Claim
118 words
In a process for production of a fibrous web towel or tissue product of enhanced softness, absorbency and bulk, the steps comprising: (a) forming treated dry cellulosic papermaking fibers characterized by twists, kinks, curls, crimps, or the like by dry hammermilling wood papermaking fibers without substantial fibrillation or breakage of the fibers; (b) preparing an unfoamed aqueous furnish by dispersing said dry treated papermaking fibers in water; (c) depositing a layer of fibers from said furnish onto a moving foraminous support forming a fibrous web; and (d) removing water from the fibrous web within a period of time not greater than about five minutes after the time of initial contact of the treated dry fibers with the water.
Claim 3
Dependent Claim
41 words
A process according to claim 1 wherein the water is removed from the web within a period of time not greater than about three minutes from the time of initial contact of the treated dry fibers with the aqueous carrier medium.
Claim 4
Dependent Claim
20 words
The process according to claim 1 wherein the furnish temperature is within the range of 60 to 120 degrees Fahrenheit.
Claim 5
Dependent Claim
24 words
A process according to claim 1 wherein the wet web is pressed by means of consolidation rollers to remove water therefrom prior to drying.
Claim 6
Dependent Claim
24 words
A process according to claim 1 wherein the aqueous furnish is made up of a blend of hammermilled dry fibers and natural papermaking fibers.
Claim 7
Dependent Claim
49 words
A process as defined in claim 1 wherein the furnish of hammermilled papermaking fibers and a separate aqueous furnish having a fiber content consisting essentially of natural cellulosic wood papermaking fibers are deposited on the foraminous support in laminar relationship to one another forming a single ply bonded web.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-07 | 1995-10-07 | 1996-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-07 | 1999-10-07 | 2000-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-07 | 2003-10-07 | 2004-04-07 | $7700.00 | Window Closed / Lapsed |