Folded sheet material web and assembly and method and apparatus therefore

• US 5,868,276 A
• Filed: 05/14/1997
• Issued: 02/09/1999
• Est. Priority Date: 05/14/1997
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Traugott, David K., Keating, Brian E., Loppnow, Jay
• Primary Examiner(s): THOMAS, ALEXANDER S
• Application Number:
  US08/856,355
• Time in Patent Office: 636 Days
• Field of Search: 428/126, 428/130, 428/124, 221/47, 221/48
• US Class Current: 221/48
• CPC Class Codes: A47K 2010/428 Details of the folds or interfolds of the sheets
• CPC Class Codes: B65H 45/24 Interfolding sheets, e.g. cigarette or toilet papers
• CPC Class Codes: Y10T 428/24231 At opposed marginal edges
• CPC Class Codes: Y10T 428/24264 Particular fold structure [e.g., beveled, etc.]

Abstract

A sheet material assembly comprising a stack of longitudinally folded sheet material webs including a first web and second web. The first web includes a first fold, a second fold overlying a portion of said first fold, and a third fold lying between the first and second folds. The second web includes a first fold underlying the first fold of the first web, a second fold overlying the second fold of the first web and a third fold underlying the third fold of the first web. A folding device for forming a web includes a first, second and third folding edge extending from a first junction and formed in a first plane, a fourth folding edge extending from the first junction out of the first plane, a fifth and sixth folding edge extending from a second junction formed in a second plane parallel to and above the first plane, and a seventh folding edge extending from the second junction out of the second plane. The fifth folding edge crosses over the third folding edge in a spaced apart relationship. A method for forming a sheet material web includes drawing the web over the second, third and fourth folding edges to form the first fold, drawing the web over the first folding edge to form a second fold and drawing the web over the fifth, sixth and seventh folding edge to form the third fold.

Claims

1. A sheet material assembly comprising a first and second web, said first web comprising a first fold, a second fold overlying a portion of said first fold, and a third fold lying between said first and second fold and in contact with said second fold, said second web comprising a first fold underlying the first fold of said first web, a second fold overlying and in contact with said second fold of said first web, and a third fold underlying and in contact with said third fold of said first web.

2. The sheet material assembly of claim 1 wherein said first and second webs have an opening between said first fold of said first web and said third fold of said second web whereby a user may insert one or more fingers into the opening so as to grasp the first and second webs.

3. The sheet material assembly of claim 2 wherein said second and third folds of said first web form a longitudinal folded edge, and said second and third folds of said second web form a longitudinal folded edge overlying said longitudinal edge formed in said first web, whereby said opening between said first and second webs can be accessed at said longitudinal edges of said first and second webs.

4. The sheet material assembly of claim 1 further comprising a third web comprising a fold lying between said first fold of said first web and said third fold of said second web.

5. The sheet material assembly of claim 4 further comprising a plurality of next lower webs progressively interfolded with said third web and the next lower web of the plurality.

6. The sheet material assembly of claim 5 wherein each of said plurality of next lower webs comprises a V-shaped web having a first and second fold.

7. A stack of longitudinally folded sheet material webs, a first web and a second web, said first web comprising a first fold, a second fold overlying said first fold, said first and second fold forming a first longitudinal folded edge, and a third fold lying between said first and second fold and forming a second longitudinal folded edge with said second fold, and wherein first and third folds have an opening between them, said second web comprising a first fold underlying said first fold of said first web, a second fold overlying said second fold of said first web, and a third fold underlying said third fold of said first web in said opening, said third fold of said second web and said first fold of said first web having an opening between them, whereby a user may insert one or more fingers into the opening so as to grasp the first and second web.

8. The stack of sheet material webs of claim 7 wherein said second and third folds of said first web are in contact.

9. The stack of sheet material webs of claim 7 wherein said first folds of said first and second webs are in contact, said second folds of said first and second webs are in contact, said third folds of said first and second webs are in contact and said second and third folds of said first web are in contact.

10. The stack of sheet material webs of claim 7 further comprising a third web comprising a fold lying between said first fold of said first web and said third fold of said second web in said opening formed between said first fold of said first web and said third fold of said second web.

11. The stack of sheet material webs of claim 10 further comprising a plurality of next lower webs progressively interfolded with said third web and the next lower web of the plurality.

12. The stack of sheet material webs of claim 11 wherein each of said next lower webs comprises a V-shaped web having a first and second fold.

13. A sheet material assembly comprising a stack of longitudinally folded sheet material webs disposed in a container, said stack accessible to a user through an opening in said container, said stack comprising opposite sides and a first web comprising a first fold, a second fold overlying a portion of said first fold, said first and second folds forming a first longitudinal folded edge at one of said sides of the stack, and a third fold lying between said first and second folds, said second and third folds forming a second longitudinal folded edge intermediate the sides of the stack, said third fold comprising a free edge proximate said first longitudinal folded edge whereby said third fold underlies substantially the entirety of said second fold, and wherein said second fold is the uppermost fold of said first web such that said second longitudinal folded edge can be grasped by said user at said opening in said container.

14. The sheet material assembly of claim 13 wherein said stack further comprises a second web comprising a first fold underlying said first fold of said first web, a second fold overlying said second fold of said first web, and a third fold underlying said third fold of said first web.

15. The sheet material assembly of claim 14 wherein said first folds of said first and second webs are in contact, said second folds of said first and second webs are in contact, said third folds of said first and second webs are in contact and said second and third folds of said first web are in contact.

16. The sheet material assembly of claim 14 wherein said first and second webs have an opening between said first fold of said first web and said third fold of said second web at said second longitudinal folded edge, whereby a user may insert one or more fingers into the opening between said first fold of said first web and said third fold of said second web so as to grasp the first and second webs.

17. The sheet material web of claim 16 wherein said stack further comprises a third web having a fold lying in said opening between said first fold of said first web and said third fold of said second web.

18. The sheet material assembly of claim 13 wherein said second and third folds of said first web are in contact.

19. The sheet material assembly of claim 13 wherein said second longitudinal folded edge is at an approximate midpoint of said stack intermediate said sides.

20. The sheet material assembly of claim 13 wherein said stack further comprises a second web comprising a fold lying between said first fold of said first web and said third fold of said first web.

21. The sheet material assembly of claim 20 wherein said stack further comprises a plurality of next lower webs progressively interfolded with said second web and the next lower web of the plurality.

22. The sheet material assembly of claim 21 wherein each of said plurality of next lower webs comprises a V-shaped web having a first and second fold.

23. A sheet material assembly comprising a stack of sheet material webs disposed in a container, said stack accessible to a user through an opening in said container, said stack comprising an e-shaped web comprising a first fold comprising a longitudinal free edge, a second fold overlying a portion of said first fold and forming a first longitudinal folded edge with said first fold, and a third fold lying between said first and second fold, said third fold comprising a free edge proximate said first longitudinal folded edge and forming a second longitudinal folded edge with said second fold whereby said third fold underlies substantially the entirety of said second fold, and wherein said second fold is the uppermost fold of said e-shaped web such that said second longitudinal folded edge can be grasped by said user at said opening in said container.

24. The stack of sheet material webs of claim 23 further comprising a second e-shaped web folded with said first e-shaped web.

25. A sheet material assembly comprising a first web and second web, said first web comprising a first fold, a second fold overlying said first fold and forming a first longitudinal folded edge with said first fold, a third fold underlying and contacting said second fold and overlying said first fold, said second and third folds forming a second longitudinal folded edge, and said third fold comprising a longitudinal free edge running parallel to and between said first and second longitudinal folded edges;

said second web comprising a first fold underlying said first fold of said first web, a second fold overlying said second fold of said first web, and a third fold underlying said third fold of said first web.

26. The sheet material assembly of claim 25 wherein said first folds of said first and second webs are in contact, said second folds of said first and second webs are in contact and said third folds of said first and second webs are in contact.

27. The sheet material assembly of claim 25 wherein said first and second webs have an opening between said first fold of said first web and said third fold of said second web at said second longitudinal folded edge, whereby a user may insert one or more fingers into the opening so as to grasp the first and second webs.

28. The sheet material assembly of claim 25 further comprising a third web comprising a fold lying between said first fold of said first web and said third fold of said second web.

29. The sheet material assembly of claim 28 further comprising a plurality of next lower webs progressively interfolded with said third web and the next lower web of the plurality.

30. The sheet material assembly of claim 29 wherein each of said plurality of next lower webs comprises a V-shaped web having a first and second fold.

31. A sheet material assembly comprising a stack of longitudinally folded sheet material webs, said stack comprising opposite sides, a first web and a second web;

said first web comprising a first fold, a second fold overlying a portion of said first fold, said first and second folds forming a first longitudinal folded edge at one of said sides of the stack, and a third fold lying between said first and second folds, said second and third folds forming a second longitudinal folded edge intermediate the sides of the stack, said third fold comprising a free edge proximate said first longitudinal folded edge whereby said third fold underlies substantially the entirety of said second fold;

said second web comprising a first fold underlying said first fold of said first web, a second fold overlying said second fold of said first web, and a third fold underlying said third fold of said first web.

32. The sheet material assembly of claim 31 wherein said second and third folds of said first web are in contact.

33. The sheet material assembly of claim 31 wherein said first folds of said first and second webs are in contact, said second folds of said first and second webs are in contact, said third folds of said first and second webs are in contact and said second and third folds of said first web are in contact.

34. The sheet material assembly of claim 31 wherein said second longitudinal folded edge is at an approximate midpoint of said stack intermediate said sides.

35. The sheet material assembly of claim 31 wherein said first and second webs have an opening between said first fold of said first web and said third fold of said second web at said second longitudinal folded edge, whereby a user may insert one or more fingers into the opening so as to grasp the first and second webs.

36. The sheet material assembly of claim 35 wherein said stack further comprises a third web having a fold lying in said opening.

37. The sheet material assembly of claim 36 wherein said stack further comprises a plurality of next lower webs progressively interfolded with said third web and the next lower web of the plurality.

38. The sheet material assembly of claim 37 wherein each of said plurality of next lower webs comprises a V-shaped web having a first and second fold.

39. The sheet material assembly of claim 31 wherein said stack further comprises a third web comprising a fold lying between said first fold of said first web and said third fold of said second web.