Absorbent article having selectively changeable size adjustment

• US 6,605,070 B2
• Filed: 06/29/2001
• Issued: 08/12/2003
• Est. Priority Date: 06/29/2001
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Lavon, Gary D., Ludwig, Susan J.
• Primary Examiner(s): Huson, Gregory L.
• Assistant Examiner(s): WIEKER, AMANDA FLYNN
• Application Number:
  US09/896,260
• Publication Number:
  US 20030009143A1
• Time in Patent Office: 774 Days
• Field of Search: 604/385.01, 604/385.04, 604/385-1-3, 604/385-9-3
• US Class Current: 604/385.22
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/49015 the elastic means being elastic panels
• CPC Class Codes: A61F 13/511 Topsheet, i.e. the permeable cover or layer facing the skin
• CPC Class Codes: A61F 13/51464 being stretchable or elastomeric
• CPC Class Codes: A61F 13/51474 characterised by its structure
• CPC Class Codes: A61F 13/515 characterised by the interconnection of the topsheet and the backsheet

Abstract

An absorbent article includes a liquid impervious backsheet joined to a liquid permeable topsheet with an absorbent core disposed therebetween. The joined topsheet and backsheet includes an extensible portion that is non-elastically, laterally extensible having a percent elongation of at least about 125%. A pair of elastomeric side panels is joined to a portion of the joined topsheet and backsheet near the extensible portion. Each of the side panels is elastically laterally extensible such that the force required to elongate the side panels a select percent elongation is less than the force required to elongate the extensible portion of the joined topsheet and backsheet an equivalent select percent elongation.

Claims

1. An absorbent article having a longitudinal axis, a transverse axis, and a pair of opposing longitudinal edges, the absorbent article comprising:

a liquid pervious topsheet;

a liquid impervious backsheet joined to the topsheet, wherein the joined topsheet and backsheet includes an extensible portion, the extensible portion being non-elastically, laterally extensible having a percent elongation of at least about 125%, wherein the extensible portion provides size adjustment to permit custom fitting of the absorbent article to a wearer;

an absorbent core disposed between the topsheet and the backsheet; and

a pair of elastomeric side panels, each of the side panels is elastically laterally extensible and is joined to a portion of a longitudinal edge near the extensible portion of the joined topsheet and backsheet;

wherein a force required to elongate the side panels a select percent elongation is less than the force required to elongate the extensible portion of the joined topsheet and backsheet an equivalent select percent elongation.

2. The absorbent article of claim 1 wherein the extensible portion of the joined topsheet and backsheet has a percent elongation of at least about 150%.

3. The absorbent article of claim 1 wherein the extensible portion of the joined topsheet and backsheet has a percent elongation of at least about 200%.

4. The absorbent article of claim 1 wherein each of the side panels has a percent elongation of at least about 150%.

5. The Absorbent article of claim 1 wherein the force required to elongate each of the elastomeric side panels laterally about 150% is less than the force required to elongate the extensible portion of the joined topsheet and backsheet laterally about 125%.

6. The Absorbent article of claim 1 wherein the force required to elongate each of the side panels laterally about 200% is less than the force required to elongate the extensible portion of the joined topsheet and backsheet laterally about 150%.

7. The absorbent article of claim 1 wherein the force required to elongate each of the side panels laterally about 125% is less than about 80 g/cm.

8. The absorbent article of claim 1 wherein the force required to elongate each of the side panels laterally about 150% is less than about 180 g/cm.

9. The absorbent article of claim 1 wherein the force required to elongate the extensible portion of the joined topsheet and backsheet laterally about 150% is greater than about 100 g/cm.

10. The absorbent article of claim 1 wherein the force required to elongate the topsheet of the extensible portion laterally about 125% is greater than the force required to extend the backsheet of the extensible portion laterally about 125%.

11. The absorbent article of claim 1 wherein the force required to extend the backsheet of the extensible portion laterally about 125% is greater than the force required to extend the topsheet of the extensible portion laterally about 125%.

12. The absorbent article of claim 1 wherein the extensible portion comprises a third material joined to the topsheet and the backsheet, the third material is laterally extensible wherein the force required to extend the third material laterally about 125% is greater than the force required to extend either the topsheet or the backsheet laterally about 125%.

13. The absorbent article of claim 12 wherein the third material is pleated or folded whereby as the extensible portion is extended laterally, the pleats or folds separate allowing the third material to expand.

14. A disposable diaper having a longitudinal axis, a transverse axis, a longitudinal edge, a first waist region, a second waist region, and a crotch region interposed therebetween, the disposable diaper comprising:

a liquid pervious topsheet;

a liquid impervious backsheet joined to the topsheet, wherein a portion of the second waist region of the joined topsheet and backsheet is non-elastically, laterally extensible at least about 125%, wherein the non-elastically laterally extensible portion of the second waist region provides size adjustment to permit custom fitting of the absorbent article to a wearer;

an absorbent core disposed between the topsheet and the backsheet; and

a pair of elastomeric side panels, each of the side panels is elastically laterally extensible and is joined to a portion of a longitudinal edge near the extensible portion of the joined topsheet and backsheet;

wherein a farce required to extend each of the elastomeric side panels a select percent elongation is less than the force required to extend the second waist region an equivalent select percent elongation.

15. The disposable diaper of claim 14 wherein the extensible portion of the second waist region has a percent elongation of at least about 150%.

16. The disposable diaper of claim 14 wherein each of the side panels is elastically laterally extensible having a percent elongation of at least about 150%.

17. The disposable diaper of claim 14 wherein the force required to extend each of the elastomeric side panels about 150% is less than the force required to extend the second waist region laterally about 125%.

18. The disposable diaper of claim 14 wherein the force required to extend each of the side panels laterally about 125% is less than about 80 g/cm.

19. The absorbent article of claim 14 wherein the force required to extend the extensible portion of the second waist region laterally about 150% is greater than about 100 grams/cm.

20. The disposable diaper of claim 14 wherein the extensible portion of the second waist region has a width and each of the side panels has a width, wherein the width of the extensible portion of the second waist region is equal to the width of each of the side panels.