Disposable pull-on pant

• US 6,120,487 A
• Filed: 01/20/1998
• Issued: 09/19/2000
• Est. Priority Date: 04/03/1996
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Ashton, Gregory
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): PEPPERS III, MILEY CRAIG
• Application Number:
  US08/930,456
• Time in Patent Office: 973 Days
• Field of Search: 162/108, 604/368, 604/396, 604/385.1, 604/385.2, 604/367, 604/358
• US Class Current: 604/385.29
• CPC Class Codes: A61F 13/49009 with elastic means
• CPC Class Codes: A61F 13/49012 the elastic means being elastic panels
• CPC Class Codes: A61F 13/4942 the barrier not being integral with the top- or back-sheet
• CPC Class Codes: A61F 2013/15284 characterized by quantifiable properties

Abstract

Pull-on garments provided with breathability in the side panels, the back waistband panel, and preferably the leg flap panels. The moisture vapor transmission rate of the side panels in conjunction with the overall vapor transmission rate of the rest of the absorbent article assists to reduce the incidence of heat rash and other skin problems associated with high heat and humidity conditions. Further, the use of waistbands and leg bands having lower forces to reduce pressure on the skin while relying more upon the forces of the side panels to maintain the product on the wearer further reduce these problems.

Claims

1. A unitary disposable absorbent article having a front waist region and a back waist region, the absorbent article comprising:

a main panel comprising a liquid pervious topsheet, a liquid impervious-vapor pervious backsheet joined with said topsheet, and an absorbent core positioned between said topsheet and said backsheet;

a pair of extensible leg cuffs, each extensible leg cuff comprising

a leg flap panel joined to an extending laterally outwardly from said main panel, and

an elastic member operatively joined with each said leg flap panel;

an elastic waist feature positioned in said back waist region, said elastic waist feature comprising;

a waistband panel joined with and extending longitudinally outwardly from said main panel, said waistband panel being extensible in a direction having a vector component in the lateral direction; and

a pair of side panels joined with and extending laterally outwardly from at least a portion of said waistband panel, each said side panel being extensible in a direction having a vector component in the lateral direction, each said side panel having a weighted average mass vapor transmission rate of at least 3500 g/m² /24 hr.

2. The absorbent article of claim 1 wherein said waistband panel in said back waist region has a weighted average mass vapor transmission rate of at least 3000 g/m² /24 hr.

3. The absorbent article of claim 2 wherein said waistband panel in said back waist region generates a skin contact pressure of less than about 0.75 psi.

4. The absorbent article of claim 3 wherein said extensible leg cuff generates a skin contact pressure of less than about 0.75 psi.

5. The absorbent article of claim 1 wherein said main panel has a weighted average mass vapor transmission rate of at least 2500 g/m² /24 hr.

6. The absorbent article of claim 5 wherein each panel of said absorbent article has a weighted average mass vapor transmission rate greater than 2500 g/m² /24 hr.

7. The absorbent article of claim 1 wherein each said side panel comprises an elastic laminate comprising a coverstock layer and an elastomeric layer joined with said coverstock layer such that said side panel is capable of elongation in at least one direction.

8. The absorbent article of claim 7 wherein said elastomeric layer comprises a scrim and said coverstock layer comprises a nonwoven web.

9. The absorbent article of claim 8 wherein said side panel additionally comprises a fastener joined to said side panel for releasably attaching said side panel to said front waist region.

10. The absorbent article of claim 1 additionally comprising seams for joining said side panel to said front waist region or said main panel to form a closed garment.

11. The absorbent article of claim 1 wherein a zone of said absorbent article which has a first panel having a weighted average mass vapor transmission rate greater than about 2500 g/m² /24 hr. is not contiguous with a second panel which extends outwardly from said first panel more than 10 mm and has a weighted average mass vapor transmission rate less than 2500 g/m² /24 hr.

12. A unitary disposable pull-on garment having a front waist region and a back waist region, the absorbent article comprising:

a main panel comprising a liquid pervious topsheet, a liquid impervious-vapor pervious backsheet joined with said topsheet, and an absorbent core positioned between said topsheet and said backsheet;

a pair of extensible leg cuffs, each extensible leg cuff comprising

a leg flap panel joined to an extending laterally outwardly from said main panel, and

an elastic member operatively joined with each said leg flap panel;

an elastic front waist feature positioned in said front waist region, said front waist feature comprising a front waist panel joined to and extending longitudinally outwardly from said main panel; and

an elastic back waist feature positioned in said back waist region, said elastic back waist feature comprising;

a waistband panel joined with and extending longitudinally outwardly from said main panel, said waistband panel being extensible in a direction having a vector component in the lateral direction, said waistband panel having a weighted average mass vapor transmission rate of at least about 3500 g/m² /24 hr., and

a pair of side panels joined with and extending laterally outwardly from at least a portion of said waistband panel, each said side panel being extensible in a direction having a vector component in the lateral direction, each said side panel comprising an elastic laminate comprising a coverstock layer and an elastomeric layer joined with said coverstock layer such that said side panel is capable of elongation in at least one direction, each said side panel having a weighted average mass vapor transmission rate of at least 4000 g/m² /24 hr.

13. An elastic laminate side panel adapted for use on a disposable absorbent article, said side panel comprising (a) a coverstock layer, and (b) an elastomeric layer joined with said coverstock layer such that said side panel is capable of elongation in at least one direction, said side panel having a weighted average mass vapor transmission rate of at least 3500 g/m² /24 hr.

14. The elastic laminate side panel of claim 13 having a weighted average mass vapor transmission rate of at least about 4000 g/m² /24 hr.

15. The elastic laminate side panel of claim 13 wherein said elastomeric layer comprises a scrim.

16. The elastic laminate side panel of claim 15 wherein said coverstock layer comprises a nonwoven web.

17. The elastic laminate side panel of claim 13 additionally comprising a fastener joined to said side panel for releasably attaching said side panel to a substrate.

18. The elastic laminate side panel of claim 13 additionally having a proximal edge, a distal edge spaced from said proximal edge, a first lateral edge connecting said proximal edge and said distal edge, and a second lateral edge connecting said proximal edge and said distal edge, said second lateral edge being non-parallel to said first lateral edge.