Soft through air dried tissue

• US 9,506,203 B2
• Filed: 06/01/2016
• Issued: 11/29/2016
• 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, Byrd Tyler IV, Hayes, Shane Ervin, Sealey, James E. II
• Primary Examiner(s): Halpern, Mark
• Application Number:
  US15/170,760
• Publication Number:
  US 20160273168A1
• Time in Patent Office: 181 Days
• Field of Search: 162/127, 162/129, 162/123, 162/144
• US Class Current: 1/1
• 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 through air dried tissue comprising an outer surface having an Average Peak to Valley Waviness of 140 microns or less and a Waviness Uniformity of 27 microns or less, the tissue having a bulk softness of less than 10TS7.

2. The tissue of claim 1, wherein the outer surface has an Average Peak to Valley Waviness of 135 microns or less.

3. A multi-ply sheet comprising two or more plies, at least one of the two or more plies comprising the tissue of claim 1.

4. A through air dried tissue comprising an outer surface having an Average Primary Amplitude of 50 microns or less and an Amplitude Uniformity of 8 microns or less, the tissue having a bulk softness of less than 10TS7.

5. The tissue of claim 4, wherein the outer surface has an Average Peak to Valley Waviness of 135 microns or less.

6. A multi-ply sheet comprising two or more plies, at least one of the two or more plies comprising the tissue of claim 4.