Absorbent sheet products and method for folding same

Patent metadata

Field	Value
Publication number	US-9017790-B2
Application number	US-201213411222-A
Country	US
Kind code	B2
Filing date	Mar 2, 2012
Priority date	Mar 2, 2011
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

A stack of interfolded absorbent sheet products comprising a plurality of absorbent sheets and a method of folding and stacking the same. Each one of the absorbent sheets is folded twice about a first axis to define two inwardly folded inner panels and at least once about a second axis to define at least two outer panels sandwiching the inner panels therebetween. The second axis is substantially perpendicular to the first axis, Each of the absorbent sheet products comprises at least one outer panel at least partially sandwiched between a pair of outer panels of an adjacent one of the absorbent sheet products of the stack. Each one of the absorbent sheet products is entirely detached from all other absorbent sheet products of the stack.

First claim

The invention claimed is:

1. A stack of interfolded absorbent sheet products comprising a plurality of absorbent sheets having an inner face and an opposed outer face, each of the absorbent sheets comprising:
a first folding edge and a second folding edge extending substantially parallel to one another along a first axis and defining respectively a first inner panel and a second inner panel, each of the absorbent sheets being folded inwardly along the first and the second folding edges towards the inner face with the first inner panel and the second inner panel being folded towards one another, each of the absorbent sheets being unfolded along the first axis between the first folding edge and the second folding edge; and
a third folding edge extending substantially perpendicular to the first and the second folding edges, bisecting each of the absorbent sheets, and defining a first outer panel and a second outer panel, each of the absorbent sheets being folded along the third folding edge such that the first and the second inner panels are inwardly facing;

wherein at least one of the first and the second outer panels is at least partially inserted between the first and the second outer panels of an adjacent one of the absorbent sheet products of the stack.

2. The stack of interfolded absorbent sheet products of claim 1 , wherein the first and the second folding edges are configured to provide a gap between the first and the second inner panels.

3. The stack of interfolded absorbent sheet products of claim 1 , wherein each one of the first and the second inner panels comprises a free outer edge and the free outer edges of the first and the second inner panels are contiguous to one another when folded inwardly along the first and the second folding edges.

4. The stack of interfolded absorbent sheet products of claim 1 , wherein the first and the second inner panels at least partially overlap when folded inwardly along the first and the second folding edges.

5. The stack of absorbent sheet products of claim 1 , wherein a free outer edge of the second inner panel is contiguous to the first folding edge.

6. The stack of interfolded absorbent sheet product of claim 5 , wherein the first inner panel comprises a free outer edge, the free outer edge of the first panel being contiguous to the second folding edge or extending past the second inner panel.

7. A stack of interfolded absorbent sheet products comprising a plurality of absorbent sheets, each one of the absorbent sheets being folded twice about a first axis to define two inwardly folded inner panels folded respectively along a first folding edge and a second folding edge, and at least once about a second axis, substantially perpendicular to the first axis, to define at least two outer panels sandwiching the inner panels therebetween and wherein the at least two outer panels comprise a first outer panel and a second outer panel separated by a third folding edge bisecting each one of the absorbent sheets, the first folding edge and the second folding edge being spaced-apart from one another along the second axis and each of the absorbent sheets being unfolded along the first axis between the first folding edge and the second folding edge, wherein each of the absorbent sheet products comprises at least one of the outer panels at least partially sandwiched between a pair of the outer panels of an adjacent one of the absorbent sheet products of the stack, wherein each one of the absorbent sheet products is entirely detached from all other absorbent sheet products of the stack.

8. The stack of interfolded absorbent sheet products of claim 7 , wherein the inwardly folded inner panels extend substantially parallel to one another.

9. The stack of interfolded absorbent sheet products of claim 7 , wherein the inwardly folded inner panels are spaced-apart from one another to define a gap therebetween.

10. The stack of interfolded absorbent sheet products of claim 7 , wherein each of the inwardly folded inner panels has an outer edge and the outer edges of the inwardly folded inner panels are contiguous to one another.

11. The stack of interfolded absorbent sheet products of claim 7 , wherein the inwardly folded inner panels are at least partially superposed.

12. The stack of interfolded absorbent sheet products of claim 7 , wherein a first one of the inwardly folded inner panels is superposed to a second one of the inwardly folded inner panels along an entire width thereof.

13. The stack of interfolded absorbent sheet products of claim 12 , wherein a first one of the inner panels is folded inwardly along a first folding edge and a free outer edge of a second one of the inner panels is substantially contiguous to the first folding edge.

14. The stack of interfolded absorbent sheet products of claim 13 , wherein the second inner panel is folded inwardly along a second folding edge and a free outer edge of the first inner panel is substantially contiguous to the second folding edge.

15. The stack of interfolded absorbent sheet products of claim 7 , wherein each one of the absorbent sheets is folded twice about the second axis to define a third outer panel.

16. The stack of interfolded absorbent sheet products of claim 7 , wherein each one of the absorbent sheets comprises at least six panels separated by folding edges extending along one of the first and the second axes.

17. A stack of interfolded absorbent sheet products comprising a plurality of absorbent sheets having an inner face and an opposed outer face, each of the absorbent sheets comprising:
a first folding edge and a second folding edge extending substantially parallel to one another along a first axis and defining respectively a first inner panel and a second inner panel, each of the absorbent sheets being folded inwardly along the first and the second folding edges towards the inner face with the first inner panel and the second inner panel being folded towards one another, each of the absorbent sheets being unfolded along the first axis between the first folding edge and the second folding edge; and
a third folding edge extending substantially perpendicular to the first and the second folding edges and defining a first outer panel and a second outer panel with the first outer panel extending past the second outer panel, each of the absorbent sheets being folded along the third folding edge such that the first and the second inner panels are inwardly facing;

wherein at least one of the first and the second outer panels is at least partially inserted between the first and the second outer panels of an adjacent one of the absorbent sheet products of the stack.

18. The stack of interfolded absorbent sheet products of claim 17 , wherein each of the absorbent sheets further comprises a fourth folding edge defined in the first outer panel and extending substantially parallel to the third folding edge, the absorbent sheets being folded along the fourth folding edge to define a third outer panel.

19. The stack of interfolded absorbent sheet products of claim 17 , wherein the first and the second folding edges are configured to provide a gap between the first and the second inner panels.

20. The stack of interfolded absorbent sheet products of claim 17 , wherein each one of the first and the second inner panels comprises a free outer edge and the free outer edges of the first and the second inner panels are contiguous to one another when folded inwardly along the first and the second folding edges.

21. The stack

Assignees

• Mrvica Maté
• Comeau Nathalie
• Leroux Serge
• Ringuette Gino
• Visnepolschi Svetlana
• Proseanic Vladimir
• Cascades Canada Ulc

Inventors

• Mrvica Maté
• Comeau Nathalie
• Leroux Serge
• Ringuette Gino
• Visnepolschi Svetlana
• Proseanic Vladimir

Classifications

• Y10T428/24264

  Particular fold structure [e.g., beveled, etc.] · CPC title

• Y10T428/24231

  At opposed marginal edges · CPC title

• Y10T428/24223

  Embedded in body of web · CPC title

• Y10T428/24215

  Acute or reverse fold of exterior component · CPC title

• B65H29/70

  Article bending or stiffening arrangements · CPC title