Single-ply resilient tissue products

Patent metadata

Field	Value
Publication number	US-11001032-B2
Application number	US-201916696127-A
Country	US
Kind code	B2
Filing date	Nov 26, 2019
Priority date	May 22, 2017
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

The present invention provides tissue webs and products having improved z-directional properties. The improved z-directional properties may be achieved by providing the structure with a unique three-dimensional surface topography, which increases the structure's Exponential Compression Modulus (K) and Caliper Under Load (C0). By improving both K and C0, the present inventors have also been able to provide tissue structures with relatively high Compression Energy (E), which enables the structures to be calendered at high loads without significant loss of sheet bulk or degradation of strength.

First claim

We claim:

1. A method of manufacturing a soft and resilient tissue product comprising the steps of:
a. forming a fiber slurry;
b. depositing the fiber slurry on a forming fabric;
c. partially dewatering the slurry to form a wet tissue web;
d. transferring the wet tissue web to a through-air drying fabric comprising a support structure and a plurality of linear elements extending in the z-direction therefrom, the elements having a height from about 0.4 to about 0.7 mm;
e. through-air drying the wet tissue web to form a dried tissue web; and
f. calendering the dried tissue web and winding the calendered web into a rolled tissue product having a Roll Firmness less than about 7.5 mm and a sheet bulk greater than about 15.0 cc/g.

2. The method of claim 1 wherein the step of calendering is carried out by passing the dried tissue web through a nip created by a steel roll and a polyurethane roll, the nip having a nip load from about 20 to about 200 pli.

3. The method of claim 1 wherein the rolled tissue product has a caliper greater than about 600 microns.

4. The method of claim 1 wherein the rolled tissue product has a S90 from about 0.45 to about 0.55 mm.

5. The method of claim 1 wherein the rolled tissue product has a Caliper Under Load (C 0 ) from about 9.5 to about 10.5.

6. The method of claim 1 wherein the rolled tissue product has a Compression Energy (E) from about 0.010 to about 0.0130 J/mm2.

7. The method of claim 1 wherein at least a portion of the plurality of linear elements comprise a continuous line element.

8. The method of claim 7 wherein the continuous line elements have a pair of planar sidewalls and a rectangular cross-sectional shape.

9. The method of claim 8 wherein the continuous line elements are similarly sized.

10. The method of claim 9 wherein the continuous line elements have a width (w) from about 0.5 to about 0.8 mm.

11. The method of claim 7 wherein the continuous elements are spaced apart from one-another from about 2.5 to about 4.0 mm.

12. The method of claim 7 wherein the continuous elements form a wave-like pattern and are evenly spaced apart from one-another from about 2.5 to about 4.0 mm.

13. The method of claim 12 wherein the continuous elements have a wavelength ranging from about 50 to about 200 mm.

14. The method of claim 1 wherein at least a portion of the plurality of linear elements comprise continuous line elements having a rectangular cross-section and a width from about 0.9 to about 1.5 mm, the continuous line elements arranged in a wave-like pattern with adjacent continuous line elements evenly spaced apart from one another from about 3.0 to about 4.5 mm.

15. The method of claim 1 wherein the product has a Roll Structure from about 1.0 to about 1.75.

Assignees

• Kimberly Clark Co

Inventors

• Vogt Kevin Joseph
• Burazin Mark Alan
• Holz Jeffrey Dean
• Sachs Mark William
• Bhagat Priya Pari

Classifications

• D21H27/02 Primary

  Patterned paper (patterned coatings D21H19/66; embossing B31F1/07; prepared on the paper-making machines D21F11/00) · CPC title

• D21H27/005 Primary

  relating to physical or mechanical properties, e.g. tensile strength, stretch, softness · CPC title

• D21F11/145

  including a through-drying process · CPC title

• D21F11/006 Primary

  Making patterned paper · CPC title

• B32B2555/00

  Personal care · CPC title