Method of making absorbent articles having an adjustable belt

• US 6,022,430 A
• Filed: 06/19/1998
• Issued: 02/08/2000
• Est. Priority Date: 06/19/1998
• Status: Expired due to Fees

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Blenke, Timothy James, Vogt, Robert Eugene
• Primary Examiner(s): SELLS, JAMES D
• Application Number:
  US09/100,382
• Time in Patent Office: 599 Days
• Field of Search: 156/73.1, 156/250, 156/256, 156/259, 156/264, 156/265, 156/269, 264/442, 264/443, 264/444
• US Class Current: 156/73.1
• CPC Class Codes: A61F 13/15601 the ribbons being applied transversely to the direction of the movement of the webs the diapers are being made of
• CPC Class Codes: Y10T 156/1067 Continuous longitudinal slitting
• CPC Class Codes: Y10T 156/1077 Applying plural cut laminae to single face of additional lamina
• CPC Class Codes: Y10T 156/1084 of continuous or running length bonded web

Abstract

A method of making disposable absorbent articles which include an outer cover, an absorbent chassis and an adjustable belt includes providing two continuous, laterally spaced apart ribbons of fastener material and attaching belt segments between and to the ribbons of fastener material at longitudinally spaced apart locations in a continuous ladder type configuration. Two continuous, laterally spaced apart ribbons of belt loop material are also provided inward from and adjacent to each of the ribbons of fastener material. The ribbons of fastener material and ribbons of belt loop material are selectively cut into discrete adjustable belts each of which defines one of the belt segments, a pair of laterally spaced apart fasteners attached to opposite end portions of the belt segment, and a pair of laterally spaced apart belt loops. The longitudinal ends of the belt loops of each of the adjustable belts are attached to a waist region of each of the absorbent articles to slidably contain the adjustable belts between the longitudinal ends of the belt loops. The fasteners on the adjustable belts are configured to releasably engage an opposite waist region of the absorbent article to conform the waist regions to a wearer'"'"'s body after the absorbent article has been placed on the wearer. The belt loops may include fastener material on a bodyfacing surface to provide another pair of fasteners.

Claims

1. A method of making disposable absorbent articles which include adjustable belts, said method comprising:

a) providing two continuous, laterally spaced apart ribbons of fastener material;

b) attaching belt segments between and to said ribbons of fastener material at longitudinally spaced apart locations in a continuous ladder type configuration;

c) providing two continuous, laterally spaced apart ribbons of belt loop material inward from and adjacent to each of said ribbons of fastener material;

d) selectively cutting said ribbons of fastener material and said ribbons of belt loop material into discrete adjustable belts each of which defines one of said belt segments, a pair of laterally spaced apart fasteners attached to opposite end portions of said belt segment, and a pair of laterally spaced apart belt loops; and

e) intermittently attaching longitudinal ends of said belt loops of each of said adjustable belts to a waist region of each of said absorbent articles wherein said adjustable belts are slidably contained between said longitudinal ends of said belt loops and wherein said fasteners on said adjustable belts are configured to releasably engage an opposite waist region of said absorbent article to conform said waist regions to a wearer'"'"'s body after said absorbent article has been placed on said wearer.

2. The method of claim 1 wherein said ribbons of fastener material are hook material of a hook and loop type fastener.

3. The method of claim 1 wherein said ribbons of fastener material are provided by a process comprising:

a) providing a continuous web of fastener material;

b) cutting said continuous web of fastener material along a longitudinal length in a serpentine path to provide said two ribbons of fastener material each defining a serpentine cut edge and an opposite edge; and

c) crossing said ribbons over one another to position said serpentine cut edge of each of said ribbons laterally outward from said opposite edge of said respective ribbon.

4. The method of claim 1 wherein said adjustable belts are capable of elongating at least about 50 percent.

5. The method of claim 1 wherein said belt segments are attached to said ribbons of fastener material using ultrasonic bonding.

6. The method of claim 1 wherein said belt segments include a latent elastic material.

7. The method of claim 6 and further comprising activating said latent elastic material to provide a pretension on said absorbent article between said belt loops.

8. The method of claim 1 wherein a bodyfacing surface of said belt loop material is hook material of a hook and loop type fastener.

9. The method of claim 8 wherein said ribbons of belt loop material provide a pair of primary fasteners and said ribbons of fastener material provide a pair of secondary fasteners on each of said adjustable belts.

10. The method of claim 1 wherein said ribbons of fastener material and said ribbons of loop material are provided by a process comprising:

a) providing a continuous web of fastener material;

b) cutting said continuous web of fastener material along a longitudinal length in a serpentine path to provide two strips of fastener material each defining a serpentine cut edge, an opposite edge, one of said ribbons of fastener material, and one of said ribbons of belt loop material; and

c) crossing said ribbons over one another to position said serpentine cut edge of each of said ribbons laterally outward from said opposite edge of said respective ribbon.

11. The method of claim 10 wherein said ribbon of fastener material and said ribbon of belt loop material on each of said strips of fastener material are attached to each other along a line of perforations.

12. A method of making a disposable absorbent article which defines an absorbent, a front waist region, a back waist region, a crotch region which extends between and connects said waist regions, a pair of opposed side edges and a pair of opposed waist edges, said method comprising the steps of:

a) supplying an outer cover for said absorbent article which defines a bodyfacing surface and a garment facing surface;

b) providing an adjustable belt which defines a pair of opposed end portions and which includes a pair of fasteners on said opposed end portions;

c) providing two belt loops inward from and adjacent to each of said fasteners on said adjustable belt; and

d) attaching longitudinal ends of said belt loops to said bodyfacing surface of said outer cover in one of said waist regions of said absorbent article wherein said adjustable belt is slidably contained between said belt loops and said outer cover and wherein said fasteners on said adjustable belt are configured to releasably engage said garment facing surface of said outer cover in said opposite waist region of said absorbent article.

13. The method of claim 12 wherein said fasteners are hook material of a hook and loop type fastener.

14. The method of claim 12 wherein said outer cover includes an attachment panel located on said garment facing surface of said outer cover and wherein said fasteners on said adjustable belt are configured to releasably engage said attachment panel.

15. The method of claim 12 wherein said adjustable belts are capable of elongating at least about 50 percent.

16. The method of claim 12 wherein said longitudinal ends of said belt loops are attached to said outer cover using ultrasonic bonding.

17. The method of claim 12 wherein said fasteners on said opposed ends of said adjustable belt define a width which is greater than a distance on said belt loops between said attached longitudinal ends.

18. The method of claim 17 wherein said adjustable belts include a latent elastic material.

19. The method of claim 18 and further comprising the step of activating said latent elastic material to provide a pretension on said absorbent article between said belt loops.

20. The method of claim 12 wherein said belt loops comprise hook material on a bodyfacing surface which is configured to releasably engage said garment facing surface of said outer cover in said opposite waist region.

21. The method of claim 20 wherein said pair of belt loops provides a pair of primary fasteners and said pair of fasteners on said opposed end portions of said adjustable belt are configured to releasably engage said garment facing surface of said outer cover in said opposite waist region of said absorbent article after said primary fasteners have been releasably engaged to further conform said waist regions to a wearer'"'"'s body after said absorbent article has been placed on said wearer.

22. The method of claim 12 wherein said fasteners on said opposed end portions of said adjustable belt and said belt loops are provided by two pieces of hook material each of which includes one of said fasteners and one of said belt loops separated by a line of perforations.

23. The method of claim 12 and further comprising the step of attaching a portion of said adjustable belt to said bodyfacing surface of said outer cover in said one waist region of said absorbent article.

24. The method of claim 23 wherein said attached portion of said adjustable belt defines an attached length which is less than about 75 percent of a total length of said adjustable belt and wherein said attached portion of said adjustable belt is located along a longitudinal centerline of said absorbent article.

25. A method of making a prefastened disposable absorbent article which defines a front waist region, a back waist region, a crotch region which extends between and connects said waist regions, a pair of opposed side edges and a pair of opposed waist edges, said method comprising:

a) providing a continuously moving web of outer cover material;

b) intermittently cutting a continuous web of adjustable belt assemblies into discrete adjustable belts each of which defines a belt segment, a pair of laterally spaced apart secondary fasteners attached to opposite end portions of said belt segment, and a pair of laterally spaced apart belt loops which further define a pair of primary fasteners on a bodyfacing surface thereof;

c) intermittently attaching said adjustable belts to said web of outer cover material at spaced apart locations by attaching longitudinal ends of said belt loops to said outer cover material wherein said adjustable belt is slidably contained between said longitudinal ends of said belt loops and said outer cover material;

d) intermittently connecting multiple absorbent chassis to said outer cover material to provide a continuously moving web of interconnected absorbent articles each of which includes one adjustable belt attached to one of said waist regions and one absorbent chassis;

e) selectively cutting said continuous web of interconnected absorbent articles into discrete absorbent articles;

f) folding each of said discrete absorbent articles about a fold line extending in a lateral direction through said crotch region of said absorbent article thereby positioning said waist regions of said absorbent article in a facing relationship; and

g) releasably engaging said primary fasteners on said belt loops with an opposite waist region of said absorbent article to provide said prefastened absorbent article wherein said secondary fasteners on said adjustable belt are configured to releasably engage said opposite waist region to conform said waist regions to a wearer'"'"'s body after said prefastened absorbent article is pulled on over a wearer'"'"'s hips.

26. The method of claim 25 wherein said continuous web of adjustable belt assemblies is provided by a process comprising:

a) providing two continuous, laterally spaced apart ribbons of fastener material;

b) intermittently attaching said belt segments between and to said ribbons of fastener material at longitudinally spaced apart locations; and

c) providing two continuous, laterally spaced apart ribbons of belt loop material inward from and adjacent to each of said ribbons of fastener material to provide said continuous web of adjustable belts.

27. The method of claim 25 wherein said ribbons of fastener material are provided by a process comprising:

a) providing a continuous web of fastener material;

b) cutting said continuous web of fastener material along a longitudinal length in a serpentine path to provide said two ribbons of fastener material each defining a serpentine cut edge and an opposite edge; and

c) crossing said ribbons over one another to position said serpentine cut edge of each of said ribbons laterally outward from said opposite edge of said respective ribbon.

28. The method of claim 25 wherein said primary fasteners and said secondary fasteners are hook material of a hook and loop type fastener.

29. The method of claim 25 wherein said primary fasteners and said secondary fasteners are configured to releasably engage said outer cover.

30. The method of claim 25 wherein said adjustable belts are capable of elongating at least about 50 percent.

31. The method of claim 25 wherein said longitudinal ends of said belt loops are attached to said outer cover using ultrasonic bonding.

32. The method of claim 25 wherein said secondary fasteners on said opposed ends of said belt segment define a width which is greater than a width of said belt segment and a distance on said belt loops between said attached longitudinal ends.

33. The method of claim 32 wherein said belt segments include a latent elastic material.

34. The method of claim 33 and further comprising activating said latent elastic material to provide a pretension on said absorbent article between said belt loops.

35. The method of claim 25 and further comprising attaching a portion of said adjustable belt to said outer cover in said one waist region of said absorbent article.

36. The method of claim 35 wherein said attached portion of said adjustable belt defines an attached length which is less than about 75 percent of a total length of said adjustable belt and wherein said attached portion of said adjustable belt is located along a longitudinal centerline of said absorbent article.