Method of making prefastened absorbent articles having a stretch band

• US 6,022,431 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: McNichols, Patrick Sean, Blenke, Timothy James, Vogt, Robert Eugene
• Primary Examiner(s): AFTERGUT, JEFFRY H
• Application Number:
  US09/100,547
• Time in Patent Office: 599 Days
• Field of Search: 156/163, 156/164, 156/229, 156/227, 156/226, 156/264, 156/85, 156/73.1, 156/297
• 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: A61F 13/565 pants type diaper
• CPC Class Codes: Y10T 156/1051 by folding
• CPC Class Codes: Y10T 156/1075 of plural laminae from single stock and assembling to each other or to additional lamina

Abstract

Disposable absorbent articles which include an outer cover, an absorbent chassis and a stretch band and methods of making the same are described. The stretch band is incorporated into the article by providing a waist panel which includes a pair of primary fasteners attached to a first surface on opposed side margins of the waist panel. The stretch band is attached to the second surface of the waist panel. The stretch band includes a pair of secondary fasteners on opposite end portions of the stretch band which are releasably engaged with the second surface of the waist panel. The second surface of the waist panel may then be attached to an inner surface of the outer cover such that the stretch band is slidably contained between the outer cover and the waist panel. The primary fasteners on the waist panel and the secondary fasteners on the stretch band are configured to releasably engage an opposite waist region of the absorbent article to initially fasten the absorbent article on the wearer and further conform the waist regions to the wearer'"'"'s body after the absorbent article has been initially placed on the wearer.

Claims

1. 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 the steps of:

a) providing a waist panel which defines a first surface, a second surface and a pair of opposed side margins and which includes a pair of primary fasteners attached to said first surface on said opposed side margins;

b) attaching a stretch band to said second surface of said waist panel wherein said stretch band includes a pair of secondary fasteners on opposite end portions of said stretch band which are releasably engaged with said second surface of said waist panel;

c) attaching said second surface of said waist panel to an outer cover of said absorbent article in said back waist region of said absorbent article wherein said outer cover defines a width which is less than a distance between said secondary fasteners on said stretch band and wherein said stretch band is slidably contained between said outer cover and said waist panel;

d) attaching an absorbent chassis to said outer cover to provide said disposable absorbent article;

e) folding said disposable absorbent article 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

f) releasably engaging said primary fasteners with an outer surface of said absorbent article in said front waist region of said absorbent article to provide said prefastened absorbent article wherein said secondary fasteners on said stretch band are configured to releasably engage said front 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.

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

3. The method of claim 1 wherein said stretch band includes a latent elastic material and said method further comprises activating said stretch band to pretension said stretch band.

4. The method of claim 1 wherein said stretch band is provided by a process comprising:

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

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

c) selectively cutting said continuous web of stretch bands to provide said stretch band having said secondary fasteners on said end portions.

5. The method of claim 4 wherein said band segments are attached to said ribbons of secondary fastener material using ultrasonic bonding.

6. The method of claim 4 and further comprising elongating said band segments at least about 25 percent before attaching said band segments to said ribbons of fastener material.

7. The method of claim 4 wherein said step of attaching said stretch band to said waist panel includes attaching a portion of said band segment of said stretch band to said second surface of said waist panel.

8. The method of claim 7 wherein said attached portion of said band segment defines an attached length which is less than about 75 percent of a total length of said band segment.