IP Library Granted Patent US 7,935,221
Granted Patent B2
US 7,935,221 · App. 12/431,127 · Granted May 3, 2011

Soft single-ply tissue

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Quick Facts
Patent No.
US 7,935,221
App. No.
12/431,127
Granted
May 3, 2011
Kind
B2
Abstract

A soft single-ply tissue sheet is produced by making a textured, high bulk, through dried tissue sheet and calendering the sheet with a high level of compression energy to substantially reduce the bulk and impart improved properties to the sheet.

Claims (11)

1. A single-ply tissue sheet having a finished dry basis weight from about 35 to about 120 grams per square meter, a ratio of the geometric mean slope divided by the geometric mean tensile strength of about 10 or less, a sheet bulk of from about 6 to about 14 cubic centimeters per gram, a surface smoothness difference of about 10 percent or less and an exponential compression modulus of about 11 or less.

2. The tissue sheet of claim 1 having a basis weight of from about 35 to about 60 grams per square meter.

3. The tissue sheet of claim 1 having a ratio of the geometric mean slope divided by the geometric mean tensile strength from about 6 to about 9.

4. The tissue sheet of claim 1 having a sheet bulk from about 8 to about 12 cubic centimeters per gram.

5. The tissue sheet of claim 1 having a surface smoothness difference of about 5 percent or less.

6. The tissue sheet of claim 1 having an exponential compression modulus from about 5 to about 10.

7. The tissue sheet of claim 1 having a cross-machine direction stretch from about 5 to about 10 percent.

8. The tissue sheet of claim 1 having a ratio of the cross-machine direction tensile energy absorbed divided by the cross-machine direction tensile strength from about 6 to about 10.

9. The tissue sheet of claim 1 having a breaking length from about 200 to about 500 meters.

10. The tissue sheet of claim 1 having an absorbent capacity from about 8 to about 11 grams of water per gram of fiber.

11. A roll of a single-ply tissue sheet, said tissue sheet having a finished dry basis weight from about 35 to about 120 grams per square meter, a ratio of the geometric mean slope divided by the geometric mean tensile strength of about 9 or less, a sheet bulk of from about 6 to about 14 cubic centimeters per gram, a surface smoothness difference of about 10 percent or less and an exponential compression modulus of about 11 or less, said roll having a roll bulk from about 6 to about 12 cubic centimeters per gram and a roll firmness from about 2 to about 12 millimeters.

Assignments (2)
NAME CHANGE Recorded Feb 3, 2015
From: KIMBERLY-CLARK WORLDWIDE, INC.
To: KIMBERLY-CLARK WORLDWIDE, INC.
Reel/Frame 034880/0704 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2009
From: ALLEN, PETER JOHN, MR.; BURAZIN, MARK ANTHONY, MR.; BURDEN, PAUL MYLES, MR.; HASSMAN, MARK JOHN, MR.; SACHS, MARK WILLIAM, MR.; SONI, ASHWIN HARIBHAI, MR.; VOGT, KEVIN JOSEPH, MR.; WARNER, KEITH WILLIAM JAMES, MR.; ZWICK, KENNETH JOHN, MR.
To: KIMBERLY-CLARK WORLDWIDE, INC.
Reel/Frame 022633/0728 →