Ultra premium bath tissue

• US 8,287,986 B2
• Filed: 05/27/2009
• Issued: 10/16/2012
• Est. Priority Date: 05/27/2008
• Status: Active Grant

• Current Assignee: GPCP IP Holdings LLC
• Original Assignee: Georgia-Pacific Consumer Products LP (KOCH Industries Incorporated)
• Inventors: Huss, Richard D., Schuh, Brian J., Hennes, Michael E., Yeh, Kang Chang
• Primary Examiner(s): Simone, Catherine A
• Application Number:
  US12/455,017
• Publication Number:
  US 20090297781A1
• Time in Patent Office: 1,238 Days
• Field of Search: 428/153, 428/154, 428/156, 428/172, 428/198
• US Class Current: 428/156
• 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 2201/0733 Pattern
• CPC Class Codes: B31F 2201/0738 Cross sectional profile of the embossments
• CPC Class Codes: B31F 2201/0761 Multi-layered
• CPC Class Codes: B31F 2201/0789 Joining plies without adhesive
• CPC Class Codes: B31F 2201/0797 Perforating
• 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 27/30 Multi-ply for surface covering D21H27/18; making on paper-making machines D21F9/00, D21F11/00
• CPC Class Codes: Y10T 156/1023 Surface deformation only [e.g., embossing]
• CPC Class Codes: Y10T 156/14 Surface bonding means and/or assembly means with shaping, scarifying, or cleaning joining surface only
• CPC Class Codes: Y10T 29/49481 Wheel making
• CPC Class Codes: Y10T 428/24455 Paper
• CPC Class Codes: Y10T 428/24463 Plural paper components
• CPC Class Codes: Y10T 428/24479 including variation in thickness
• CPC Class Codes: Y10T 428/24562 Interlaminar spaces
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24826 Spot bonds connect components

Abstract

Visibility of ply-bonding created by glassining spot embossing on decorative pattern embossed tissue products is provided by obscuring the glassined spot embosses by distributing them along a meandering path through the decorative pattern, obscuring the edges of the glassined spot embosses by providing a gradual transition therefrom and combinations of the two techniques.

Claims

1. A multi-ply cellulosic tissue comprising:

an outer ply bearing a pattern of marks chosen from the group comprising;

an embossed pattern;

wire marks from a drying fabric;

wire marks from an imprinting fabric;

wire marks from a forming fabric;

creping fabric marks from a creping fabric;

printed designs and watermarks;

in a first pattern, and an inner ply joined to said outer ply by a plurality of spot embosses, wherein said spot embosses comprise a plurality of glassined spot embosses arrayed in a meandering path interspersed amongst said first pattern, wherein at least said outer ply of tissue comprises a plurality of micro-embossed regions, each comprising an array of closely adjacent regularly spaced micro-emboss elements of a substantially uniform size;

said glassined spot embosses;

(a) having an area between 25% and 400% of the area of the closely adjacent regularly spaced micro-emboss elements;

(b) being arranged along a meandering path; and

(c) providing a ply bond strength of at least about 0.7 g/″

between said outer ply and said inner ply;

each region of said plurality of micro-embossed regions on said outer ply comprises an area having an irregular, non-linear outline having components extending in both the machine direction and the cross direction; and

said meandering path of glassined spot embosses by which said outer ply is joined to said inner ply meanders over a path which varies by at least about ¼

″

in the cross-machine direction and provides a ply bond strength of at least about 1.5 g/″

between said outer ply and said inner ply.

2. The multi-ply tissue of claim 1 wherein spot embosses joining said inner ply to said outer ply have an area between one twentieth and no more than 4 times the area of marks in said plurality of marks in said first pattern.

3. The multi-ply tissue of claim 1 wherein a first plurality of marks in said first pattern range from oval to oblong to circular in shape and have an aspect ratio between 1 and 3 and wherein a second plurality of spot embosses joining said inner ply to said outer ply have an aspect ratio between 1 and 3 times the aspect ratio of marks in the first plurality of marks.

4. The multi-ply tissue of claim 1, wherein a plurality of marks in said first pattern are of generally equivalent size and shape ranging from oval to oblong to circular in shape, and have an aspect ratio between 1 and 3 and a plurality of spot embosses joining said inner ply to said outer ply are of generally equivalent size and shape thereto.

5. The multi-ply tissue of claim 1, wherein:

each glassined spot emboss joining said outer ply to said inner ply has an area of between about 25% and about 200% of the area of said individual micro-embosses.

6. The multi-ply tissue of claim 1 wherein:

the meandering path along which lie said glassined spot emboss joining said outer ply to said inner ply is a sinuous path having a tangent disposed at an angle of between 20° and

70°

from the machine direction of said tissue over at least about 40% of its length.

7. The multi-ply tissue of claim 1 wherein:

the meandering path along which lie said glassined spot emboss joining said outer ply to said inner ply is generally sinusoidal.

8. The multi-ply tissue of claim 1 wherein said glassined spot embosses provided a ply bond strength of at least about 1.5 g/″

between said outer ply and said inner ply.

9. The multi-ply tissue of claim 1 wherein said glassined spot embosses provided a ply bond strength of at least about 2.5 g/″

between said outer ply and said inner ply.

10. The multi-ply tissue of claim 1 wherein said glassined spot embosses provided a ply bond strength of at least about 5 g/″

between said outer ply and said inner ply.

11. The multi-ply tissue of claim 1 wherein said glassined spot embosses provided a ply bond strength of at least about 7.5 g/″

between said outer ply and said inner ply.

12. A multi-ply tissue product comprising at least one ply bearing a pattern of marks chosen from the group comprising:

an embossed pattern;

wire marks from a drying fabric;

wire marks from an imprinting fabric;

wire marks from a forming fabric;

creping fabric marks from a creping fabric;

printed designs and watermarks; and

at least one other ply, said one ply being joined to said other ply by glassined spot embosses arranged on a meandering path interspersed with and obscured by marks on said one ply, wherein each said glassined spot emboss has an area of between 50 square mils and 1000 square mils.

13. The multi-ply tissue product of claim 12 wherein said glassined spot embosses are arrayed in a substantially continuous sinuous path.

14. The multi-ply tissue product of claim 12 wherein each said glassined spot emboss has an area of between 100 square mils and 500 square mils.

15. The multi-ply tissue product of claim 12 wherein said glassined spot embosses are arrayed on a sinuous path meandering over lateral extent of between ¼

″ and

1″

.

16. The multi-ply tissue product of claim 15 wherein each said spicule has a generally flat contact area defined at its outermost peripheral extent having an area of between 100 square mils and 500 square mils.

17. The multi-ply tissue product of claim 15 wherein said glassined spot emboss are arrayed on a sinuous path meandering over a lateral extent of between ¼

″ and

1″

.

18. The multi-ply tissue product of claim 17 wherein between about 5 and 50 glassined spot embosses are provided per MD inch of the tissue product.

19. The multi-ply tissue product of claim 17 wherein between about 10 and 30 glassined spot embosses are provided per MD inch of the tissue product.

20. A multi-ply cellulosic tissue comprising:

an outer ply bearing a pattern of marks chosen from the group comprising;

an embossed pattern;

wire marks from a drying fabric;

wire marks from an imprinting fabric;

wire marks from a forming fabric;

creping fabric marks from a creping fabric;

printed designs and watermarks;

in a first pattern and an inner ply joined to said outer ply by a plurality of spot embosses, wherein said plurality of spot embosses comprises a plurality of glassined spot embosses arrayed on a path interspersed amongst said first pattern, said spot embosses comprising an elongated central region and a pair of shoulders extending away from said elongated central region generally in the cross direction and extending upwardly toward the surface of said multi-ply cellulosic tissue at an angle of less than 30°

, wherein at least said outer ply of tissue comprises a plurality of micro-embossed regions, each comprising an array of closely adjacent regularly spaced micro emboss elements of a substantially uniform size;

said glassined spot embosses having an area between 25% and 400% of the area of the closely adjacent regularly spaced micro-emboss elements, providing a ply bond strength of at least about 0.7, 1.0, 1.5, 3, 5, or 7 g/in between said outer ply and said inner ply, wherein each said spot emboss has a generally flat contact region having an area of between 50 square mils and 1000 square mils.

21. The multi-ply tissue of claim 20 wherein spot embosses joining said inner ply to said outer ply have an area between one twentieth and no more than 4 times the area of the most common marks in said plurality of marks in said first pattern.

22. The multi-ply tissue of claim 20, wherein said glassined elongated central regions joining said inner ply to said outer ply have a length of between 0.025″

and 0.06″ and

a width of between 0.005″ and

0.015″

.

23. The multi-ply tissue of claim 20 wherein a first plurality of marks in said first pattern range from oval to oblong to circular in shape and have an aspect ratio between 1 and 3 and wherein a second plurality of spot embosses joining said inner ply to said outer ply have an aspect ratio between 1 and 3 times the aspect ratio of marks in the first plurality of marks.

24. The multi-ply tissue of claim 20, wherein a plurality of marks in said first pattern are of generally equivalent size and shape ranging from oval to oblong to circular in shape, and have an aspect ratio between 1 and 3 and a plurality of spot embosses joining said inner ply to said outer ply are of generally equivalent size and shape thereto.

25. The multi-ply tissue of claim 20, wherein:

each glassined spot emboss joining said outer ply to said inner ply has an area of between about 25% and about 200% of the area of said individual micro-embosses.

26. The multi-ply tissue of claim 20 wherein said spot embosses lie on a path extending generally in the machine direction of said tissue and with between about 3 and 30 spot embosses per inch being provided.

27. The multi-ply tissue of claim 20 wherein said spot embosses lie on a path extending generally in the machine direction of said tissue and with between about 5 and 25 spot embosses per inch being provided.

28. A multi-ply tissue product comprising at least one ply bearing a pattern of marks chosen from the group comprising:

an embossed pattern;

wire marks from a drying fabric;

wire marks from an imprinting fabric;

wire marks from a forming fabric;

creping fabric marks from a creping fabric;

printed designs and watermarks; and

at least one other ply, said one ply being joined to said other ply by glassined spot embosses arranged on a meandering path interspersed with and obscured by marks on said one ply, each said glassined spot emboss being elongate in shape with the long dimension thereof being between 0.02″ and

0.1″

, the width thereof being between 0.002 and 0.015″

, with the long dimension of said peak being at an angle of between 20° and

40°

from the machine direction and two of said shoulders adjoining the narrows of said elongate region and extending generally in the cross-machine direction decline from the height of said peak at angles less than 20°

over a length of at least about 0.08″

while two of said shoulders adjoining the length of said elongate region and extending generally in the machine direction between peaks decline at angles of greater than 20°

, forming valleys between said peaks, the width of each said valley being between about 0.05″ and

0.25″

.

29. The multi-ply tissue product of claim 28 wherein said glassined spot embosses are arrayed in a substantially continuous meandering path.

30. The multi-ply tissue product of claim 28 wherein each said glassined spot emboss has an area of between 50 square mils and 1000 square mils.

31. The multi-ply tissue product of claim 28 wherein each said glassined spot emboss has an area of between 100 square mils and 500 square mils.

32. The multi-ply tissue product of claim 28 wherein said glassined spot embosses are arrayed on a sinuous path meandering over lateral extent of between ¼

″ and

1″

.

33. The multi-ply tissue product of claim 32 wherein each said glassined spot emboss has a generally flat contact area defined at its outermost peripheral extent having an area of between 100 square mils and 500 square mils.

34. The multi-ply tissue product of claim 33 wherein said glassined spot emboss are arrayed on a sinuous path meandering over a lateral extent of between ¼

″ and

1″

.

35. The multi-ply tissue product of claim 34 wherein between about 5 and 50 glassined spot embosses are provided per MD inch of the tissue product.

36. The multi-ply tissue product of claim 34 wherein between about 10 and 30 glassined spot embosses are provided per MD inch of the tissue product.