SOFT THROUGH AIR DRIED TISSUE

• US 20170167082A1
• Filed: 02/27/2017
• Published: 06/15/2017
• Est. Priority Date: 08/03/2012
• Status: Active Grant

• Current Assignee: First Quality Tissue, Llc (First Quality Enterprises LLC)
• Original Assignee: First Quality Tissue, Llc (First Quality Enterprises LLC)
• Inventors: Ramaratnam, Karthik, Miller, IV, Byrd Tyler, Hayes, Shane Ervin, Sealey, II, James E.
• Granted Patent: US 9,725,853 B2
• Time in Patent Office: Days
• CPC Class Codes: D21F 11/145 including a through-drying process
• CPC Class Codes: D21H 11/04 Kraft or sulfate pulp
• CPC Class Codes: D21H 21/14 characterised by function or properties in or on the paper D21H19/66, D21H27/02 take precedence
• CPC Class Codes: D21H 21/18 Reinforcing agents
• CPC Class Codes: D21H 21/20 Wet strength agents
• CPC Class Codes: D21H 27/002 Tissue paper; Absorbent paper D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00
• CPC Class Codes: D21H 27/004 characterised by specific parameters D21H27/008 takes precedence
• CPC Class Codes: D21H 27/005 relating to physical or mechanical properties, e.g. tensile strength, stretch, softness
• CPC Class Codes: D21H 27/008 characterised by inhomogeneous distribution or incomplete coverage of properties, e.g. obtained by using materials of chemical compounds D21H23/02, D21H23/76, D21H27/02 take precedence
• CPC Class Codes: D21H 27/30 Multi-ply for surface covering D21H27/18; making on paper-making machines D21F9/00, D21F11/00
• CPC Class Codes: D21H 27/38 at least one of the sheets having a fibrous composition differing from that of other sheets
• CPC Class Codes: D21H 27/40 at least one of the sheets being non-planar, e.g. crêped crêping or corrugating paper B31F

Abstract

A multi-layer through air dried tissue including a first exterior layer comprised substantially of hardwood fibers, an interior layer comprised substantially of softwood fibers, and a second exterior layer comprised substantially of hardwood fibers. The interior layer includes a first wet end additive comprising an ionic surfactant and a second wet end additive comprising a non-ionic surfactant.

Claims

1. A two-ply, through air dried tissue comprising an outer surface having at least one of an Average Peak to Valley Waviness of 140 microns or less or an Average Primary Amplitude of 50 microns or less.

2. The two-ply, through air dried tissue of claim 1, wherein the outer surface has an Average Peak to Valley Waviness of 140 microns or less and a Waviness Uniformity of 27 microns or less.

3. The two-ply, through air dried tissue of claim 1, wherein the outer surface has an Average Primary Amplitude of 50 microns or less and an Amplitude Uniformity of 8 microns or less.

4. A through air dried tissue having a bulk softness of less than 1OTS7 and comprising an outer surface having an Average Peak to Valley Waviness of 140 microns or less.

5. The through air dried tissue of claim 4, wherein the outer surface has a Waviness Uniformity of 27 microns or less.

6. A through air dried tissue having a bulk softness of less than 1OTS7 and comprising an outer surface having an Average Primary Amplitude of 50 microns or less.

7. The through air dried tissue of claim 6, wherein the outer surface has an Amplitude Uniformity of 8 microns or less.

8. A two-ply, through air dried tissue comprising an outer surface having an Average Peak to Valley Waviness of 140 microns or less, a Waviness Uniformity of 27 microns or less, an Average Primary Amplitude of 50 microns or less and an Amplitude Uniformity of 8 microns or less.

9. The two-ply, through air dried tissue of claim 8, wherein the tissue has a bulk softness of less than 1OTS7.

10. The two-ply, through air dried tissue of claim 8, wherein the outer surface has an Average Peak to Valley Waviness of 135 microns or less.

11. The two-ply, through air dried tissue of claim 8, wherein the tissue has a lint value of 7.5 or greater.

12. The two-ply, through air dried tissue of claim 8, wherein the tissue has a softness of at least 90.

13. The two-ply, through air dried tissue of claim 8, wherein the tissue has a caliper of less than 650 microns.