US5593545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making uncreped throughdried tissue products without an open draw
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1995-02-06
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Granted: 1997-01-14
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Expires: 2015-02-06
Abstract
Abstract A method for making uncreped throughdried tissues is disclosed in which the dried tissue sheet is fully supported by a fabric up to the reel. This method eliminates the open draw between the throughdryer and the reel and thereby eliminates sheet breaks normally associated with such open draws. In addition, the machine direction strength of the sheet can be reduced since the added strength is not needed to traverse the open draw normally present in current processes. Reducing the MD strength in turn enables the production of more square, less stiff sheet, which improves the tactile properties of the product.
Inventors
- 👤 James S. Rugowski
- 👤 Michael J. Rekoske
- 👤 Philip S. Lin
- 👤 Ronald F. Gropp
- 👤 Paul A. B. L. M. Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:10
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/14; D21F11/145
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
170 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring the wet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is: (a) transferred from the throughdrying fabric to a first dry end transfer fabric using a vacuum roll; (b) carried between the first dry end transfer fabric and the top side of a second dry end transfer fabric, the underside of which partially wraps around the reel drum; (c) transferred to the top side of the second dry end transfer fabric and maintained thereon by air pressure created by an air foil positioned on the underside of the second dry end transfer fabric; and (d) wound onto the reel.
Claim 2
Independent Claim
170 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring the wet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is: (a) transferred from the throughdrying fabric to a first dry end transfer fabric using a vacuum roll; (b) carried between the first dry end transfer fabric and the top side of a second dry end transfer fabric, the underside of which partially wraps around the reel drum; (c) transferred to the top side of the second dry end transfer fabric and maintained thereon by air pressure created by an air foil positioned on the underside of the second dry end transfer fabric; and (d) wound onto the reel.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein the air permeability of the second dry end transfer fabric is about 200 cubic feet per minute per square foot or greater.
Claim 4
Dependent Claim
30 words
The method of claim 1 wherein the air permeability of the second dry end transfer fabric is from about 200 to about 500 cubic feet per minute per square foot.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the air permeability of the second dry end transfer fabric is from about 300 to about 400 cubic feet per minute per square foot.
Claim 6
Independent Claim
146 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring thewet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is: (a) transferred from the throughdrying fabric to a first dry end transfer fabric using a vacuum roll; (b) carried between the first dry end transfer fabric and the top side of a second dry end transfer fabric, the underside of which partially wraps around the reel drum; (c) transferred to the top side the second dry end transfer fabric; and (d) wound onto the reel.
Claim 7
Independent Claim
146 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring thewet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is: (a) transferred from the throughdrying fabric to a first dry end transfer fabric using a vacuum roll; (b) carried between the first dry end transfer fabric and the top side of a second dry end transfer fabric, the underside of which partially wraps around the reel drum; (c) transferred to the top side the second dry end transfer fabric; and (d) wound onto the reel.
Claim 8
Dependent Claim
28 words
The method of claim 5 wherein the air permeability of the second dry end transfer fabric is about 100 cubic feet per minute per square foot or less.
Claim 9
Dependent Claim
30 words
The method of claim 5 wherein the air permeability of the second dry end transfer fabric is from about 25 to about 100 cubic feet per minute per square foot.
Claim 10
Dependent Claim
30 words
The method of claim 5 wherein the air permeability of the second dry end transfer fabric is from about 50 to about 100 cubic feet per minute per square foot.
Claim 11
Independent Claim
97 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring the wet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is transferred directly from the throughdrying fabric to the reel drum and wound onto the reel.
Claim 12
Independent Claim
97 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring the wet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is transferred directly from the throughdrying fabric to the reel drum and wound onto the reel.
Claim 13
Independent Claim
106 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring the wet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is transferred directly from the throughdrying fabric to a first reel drum, thereafter immediately transferred to a second reel drum and wound onto the reel.
Claim 14
Independent Claim
106 words
A method for making an uncreped throughdried tissue comprising depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web, transferring the wet web to a throughdrying fabric, throughdrying the web to form a tissue sheet, and transferring the tissue sheet to a reel such that the sheet does not traverse an open draw while being wound onto the reel in the winding nip formed between the reel and a reel drum wherein the tissue sheet is transferred directly from the throughdrying fabric to a first reel drum, thereafter immediately transferred to a second reel drum and wound onto the reel.
Claim 15
Dependent Claim
24 words
The method of claim 1, 5, 9 or 10 wherein the speed of the tissue sheet is about 2000 feet per minute or greater.
Claim 16
Dependent Claim
24 words
The method of claim 1, 5, 9 or 10 wherein the speed of the tissue sheet is about 3000 feet per minute 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) | 2000-01-14 | 2000-07-15 | 2001-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-14 | 2004-07-15 | 2005-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-14 | 2008-07-15 | 2009-01-14 | $7700.00 | Window Closed / Lapsed |