US5492598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing the internal bulk of throughdried tissue
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1994-09-14
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Granted: 1996-02-20
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Expires: 2014-09-14
Abstract
Abstract The internal bulk of a tissue web can be improved during manufacturing of the basesheet by subjecting the tissue web to differential pressure while supported on a coarse fabric at a consistency of about 30 percent or greater. The differential pressure, such as by applying vacuum suction to the underside of the coarse fabric, causes the wet web to deflect into the openings or depressions in the fabric and "pop" back, resulting in a substantial gain in thickness or internal bulk. The method is especially adapted to improve the internal bulk of throughdried tissue webs.
Inventors
- 👤 Michael A. Hermans
- 👤 Fung-Jou Chen
- 👤 Harry L. Spiegelberg
- 👤 Bernhardt E. Kressner
- 👤 Janice G. Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:17
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A method for making a throughdried tissue product comprising: (a) depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a wet web; (b) transferring the wet web to a throughdrying fabric; (c) carrying the web over a first throughdryer and partially drying the web to a consistency of from about 28% to about 45%; (d) transferring the partially dried web to a second throughdrying fabric; (e) sandwiching the partially dried web between the second throughdrying fabric and a coarse fabric; (f) deflecting the web to substantially conform the web to the contour of the coarse fabric; (g) carrying the web over a second throughdryer to dry the web to a consistency of about 85% or greater; (h) transferring the web to a Yankee dryer; and (i) creping the web.
Claim 2
Independent Claim
134 words
A method for making a throughdried tissue product comprising: (a) depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a wet web; (b) transferring the wet web to a throughdrying fabric; (c) carrying the web over a first throughdryer and partially drying the web to a consistency of from about 28% to about 45%; (d) transferring the partially dried web to a second throughdrying fabric; (e) sandwiching the partially dried web between the second throughdrying fabric and a coarse fabric; (f) deflecting the web to substantially conform the web to the contour of the coarse fabric; (g) carrying the web over a second throughdryer to dry the web to a consistency of about 85% or greater; (h) transferring the web to a Yankee dryer; and (i) creping the web.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the web is deflected by pneumatic means.
Claim 4
Dependent Claim
27 words
The method of claim 2 wherein the web is deflected by vacuum suction at a vacuum level of from about 10 to about 28 inches of mercury.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein the vacuum level is from about 15 to about 25 inches of mercury.
Claim 6
Dependent Claim
26 words
The method of claim 1, wherein upon deflection of the web, the Normalized Debonded Void Thickness of the web is increased about 10 percent or greater.
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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) | 1999-02-19 | 1999-08-21 | 2000-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-19 | 2003-08-21 | 2004-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-19 | 2007-08-21 | 2008-02-20 | $7700.00 | Window Closed / Lapsed |