DISPOSABLE ABSORBENT WEARING ARTICLE

• US 20110066127A1
• Filed: 02/18/2009
• Published: 03/17/2011
• Est. Priority Date: 03/31/2008
• Status: Active Grant

• Current Assignee: Unicharm Corporation
• Original Assignee: Unicharm Corporation
• Inventors: Kuwano, Seiichi, Ono, Yoshio
• Granted Patent: US 8,777,918 B2
• Time in Patent Office: Days
• US Class Current: 604/385.3
• CPC Class Codes: A61F 13/49001 having preferential bending zones, e.g. fold lines or grooves
• CPC Class Codes: A61F 13/49011 the elastic means is located at the waist region
• CPC Class Codes: A61F 13/496 in the form of pants or briefs
• CPC Class Codes: A61F 13/53 characterised by the absorbing medium A61F13/20 takes precedence

Abstract

A disposable absorbent wearing article constructed with an absorbent core that may be deformed to form absorbent barriers against body waste and thereby an absorbent chassis that includes the absorbent core may be kept in contact with the wearer'"'"'s torso with good fitness to improve appearance of the article put on the wearer'"'"'s body and to prevent leak of body waste. The disposable absorbent wearing article comprising an absorbent chassis and an annular elasticized waist panel wherein the absorbent core of the absorbent chassis is formed with deformation guides so that at least opposite lateral regions of said absorbent core may be deformed along the deformation guides toward the wearer'"'"'s torso under elastic contraction of at least a front waist panel constituting the annular waist panel.

Claims

1. A disposable absorbent wearing article comprising:

a longitudinal center line and a transverse center line;

a front waist region, a rear waist region and a crotch region;

an elasticized waist panel defining said front and rear waist regions; and

an absorbent chassis defining respective parts of said front and rear waist regions and said crotch region and joined to a front part and a rear part of said elasticized waist panel,

said absorbent chassis includes an absorbent core;

said absorbent core is formed in a region lying in said crotch region aside toward said front waist region with a pair of deformation guides symmetrically formed about said longitudinal center line; and

at least opposite lateral zones of said absorbent core are adapted to be deformed toward the wearer'"'"'s crotch region by intermediary of said deformation guides under elastic contraction of at least a part of said elasticized waist panel lying in said front waist region.

2. The wearing article according to claim 1, wherein said elasticized waist panel consists of a front waist panel and a rear waist panel and respective opposite side edges of said front and rear waist panels may be annularly joined together to form a waist-opening and a pair of leg-openings.

3. The wearing article according to claim 1, wherein said front and rear waist panels are provided with a plurality of elastic elements extending in said transverse direction and elasticized thereby so as to be contractible in said transverse direction.

4. The wearing article according to claim 1, wherein auxiliary elastic elements are arranged on both sides of said deformation guides so that said auxiliary elastic elements may cooperate with contraction of said front waist panel to assist at least said absorbent core to be deformed by intermediary of said deformation guides.

5. The wearing article according to claim 2, wherein:

of said front and rear waist panels, at least said front waist panel has a pair of first elasticized regions opposed to and spaced from each other in said transverse direction and a non-elasticized region lying between said pair of elasticized regions; and

a front end region of said absorbent chassis lies at least in said non-elasticized region.

6. The wearing article according to claim 5, wherein of said front and rear waist panels, at least said front waist panel has a second elasticized region lying adjacent said pair of first elasticized regions and defining a front waist band.

7. The wearing article according to claim 2, wherein:

said rear waist panel has a third elasticized region corresponding to said first elasticized region, a fourth elasticized region corresponding to said second elasticized region and a fifth elasticized region lying adjacent said third elasticized region and placed aside toward said crotch region;

a tensile stress of said fifth elasticized region in said transverse direction is set to be lower than those of said first through fourth elasticized regions; and

a dimension of said rear waist panel in said longitudinal direction is larger than that of said front waist panel by a dimension of said fifth elasticized region in said longitudinal direction.

8. The wearing article according to claim 1, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.

9. The wearing article according to claim 8, wherein said absorbent structure includes a pair of elasticized side flaps extending outward from lateral zones of said absorbent structure as viewed in said transverse direction and said side flaps are provided with said auxiliary elastic elements.

10. The wearing article according to claim 1, wherein each of said side flaps are elasticized by at least one elastic element in a form of strand extending in said longitudinal direction.

11. The wearing article according to claim 2, wherein said front and rear waist panels are provided with a plurality of elastic elements extending in said transverse direction and elasticized thereby so as to be contractible in said transverse direction.

12. The wearing article according to claim 2, wherein auxiliary elastic elements are arranged on both sides of said deformation guides so that said auxiliary elastic elements may cooperate with contraction of said front waist panel to assist at least said absorbent core to be deformed by intermediary of said deformation guides.

13. The wearing article according to claim 3, wherein auxiliary elastic elements are arranged on both sides of said deformation guides so that said auxiliary elastic elements may cooperate with contraction of said front waist panel to assist at least said absorbent core to be deformed by intermediary of said deformation guides.

14. The wearing article according to claim 11, wherein auxiliary elastic elements are arranged on both sides of said deformation guides so that said auxiliary elastic elements may cooperate with contraction of said front waist panel to assist at least said absorbent core to be deformed by intermediary of said deformation guides.

15. The wearing article according to claim 2, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.

16. The wearing article according to claim 3, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.

17. The wearing article according to claim 4, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.

18. The wearing article according to claim 11, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.

19. The wearing article according to claim 12, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.

20. The wearing article according to claim 13, further including an absorbent structure comprising said absorbent core, a liner facing a wearer'"'"'s skin adapted to cover a side of said absorbent core facing the wearer'"'"'s skin and a backsheet adapted to cover a side of said absorbent core facing away from the wearer'"'"'s skin.