Soft high bulk tissue

• US 5,702,571 A
• Filed: 05/13/1996
• Issued: 12/30/1997
• Est. Priority Date: 02/18/1994
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Kamps, Richard Joseph, Chen, Fung-jou, Radtke, Darnell Clarence, Behnke, Janica Sue
• Primary Examiner(s): Czaja, Donald E.
• Assistant Examiner(s): Fortuna, Jose A.
• Application Number:
  US08/648,527
• Time in Patent Office: 596 Days
• Field of Search: 162/111, 162/109, 162/113, 162/117, 162/123, 162/361, 162/362, 428/172, 428/184, 428/340, 264/282, 264/284
• US Class Current: 162/117
• CPC Class Codes: A47K 10/16 Paper towels; Toilet paper; Holders therefor dispensers A47K10/32
• CPC Class Codes: B31F 1/07 Embossing , i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profilesB31F1/128 takes precedence; corrugating B31F1/20; embossing in combination with printing B41F19/02, B41M1/24; typewriters for embossing B41J3/38; stamping in combination with deforming B41K3/36
• CPC Class Codes: B31F 2201/072 Laser engraving
• CPC Class Codes: B31F 2201/0733 Pattern
• CPC Class Codes: B31F 2201/0738 Cross sectional profile of the embossments
• CPC Class Codes: B31F 2201/0756 Characteristics of the incoming material, e.g. creped, embossed, corrugated
• CPC Class Codes: B31F 2201/0758 Characteristics of the embossed product
• CPC Class Codes: B31F 2201/0779 Control
• CPC Class Codes: D21F 11/006 Making patterned paper
• CPC Class Codes: D21H 27/40 at least one of the sheets being non-planar, e.g. crêped crêping or corrugating paper B31F
• CPC Class Codes: Y10T 428/24612 Composite web or sheet

Abstract

Tissue sheets, such as are useful for facial or bath tissue, can be embossed with a fine scale embossing pattern to increase bulk with a minimal loss in strength. The fine scale embossing pattern contains at least about 15 discrete intermeshing embossing elements per square centimeter (100 per square inch) and can enable the tissue manufacturer to produce premium quality tissues having adequate softness, bulk and strength from conventional tissue basesheets without layering or throughdrying equipment. Depending on the starting basesheet material, tissues having a unique balance of properties can be produced, especially for conventional wet-pressed basesheets.

Claims

1. A two-ply tissue product comprising two wet-pressed tissue sheets, said product having a bulk of about 9 cubic centimeters per gram or greater, a specific elastic modulus of about 3 kilometers or less and a geometric mean tensile strength of about 500 grams or greater per 3 inches sample width.

2. A soft wet-pressed tissue sheet having a bulk of about 6 cubic centimeters per gram or greater, a specific elastic modulus of about 4 kilometers or less, and a geometric mean tensile strength of about 500 grams or greater per 3 inches sample width.

3. The tissue sheet of claim 2 having a bulk of about 7 cubic centimeters per gram or greater and a specific elastic modulus of about 3 kilometers or less.

4. The tissue sheet of claim 2 having a bulk of about 7 cubic centimeters per gram or greater and a specific elastic modulus of about 2 kilometers or less.

5. A soft throughdried tissue sheet having a bulk of about 9 cubic centimeters per gram or greater, a specific elastic modulus of about 3 kilometers or less and a geometric mean tensile strength of about 500 grams or greater per 3 inches sample width.

6. The tissue sheet of claim 5 having a specific elastic modulus of about 2 kilometers or less.