Absorbent article

• US 20070100307A1
• Filed: 09/29/2006
• Published: 05/03/2007
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: Unicharm Corporation
• Original Assignee: Unicharm Corporation
• Inventors: Nomoto, Takashi, Nanbu, Chinatsu
• Granted Patent: US 7,727,213 B2
• Time in Patent Office: Days
• US Class Current: 604/378
• CPC Class Codes: A61F 13/4704 having preferential bending zones, e.g. fold lines or grooves
• CPC Class Codes: A61F 13/472 specially adapted for female use A61F13/474, A61F13/475, A61F13/476 take precedence
• CPC Class Codes: A61F 13/475 characterised by edge leakage prevention means
• CPC Class Codes: A61F 13/5376 characterised by the performance of the layer, e.g. acquisition rate, distribution time, transfer time
• CPC Class Codes: A61F 2013/15422 Density
• CPC Class Codes: A61F 2013/53721 with capillary means

Abstract

An absorbent article that prevents a discharged matter from leaking out, and also prevents a wearer'"'"'s sensation of wearing a sanitary napkin from worsening is provided. The absorbent article of the present invention includes a liquid-permeable surface sheet, a liquid-permeable back sheet, an absorbent body disposed between the surface sheet and the back sheet, and an intermediate portion disposed between the surface sheet and the absorbent body. The absorbent part 4 includes an absorbent body center portion and an absorbent body posterior portion continuously formed on a posterior side in the longitudinal direction D of the absorbent body center portion. The intermediate portion includes a first intermediate sheet disposed between the surface sheet and the absorbent body center portion and a second intermediate sheet disposed between the surface sheet and at least the absorbent body posterior portion. The liquid-transport property of the second intermediate sheet is different from that of the first intermediate sheet.

Claims

1. An absorbent article, comprising:

a liquid-permeable surface sheet;

a liquid-impermeable back sheet; and

an absorbent body being disposed between the surface sheet and the back sheet, wherein the absorbent body comprises;

an absorbent body center portion, and

an absorbent body posterior portion continuously formed on a posterior side, in a longitudinal direction of an absorbent body center portion; and

an intermediate potion being disposed between the surface sheet and the absorbent body, wherein the intermediate sheet comprising;

a first intermediate sheet is disposed between the surface sheet and the absorbent body center portion, and

a second intermediate sheet is disposed between the surface sheet and at least the absorbent body posterior portion, the liquid-transport property of the second intermediate sheet being different from a liquid-transport property of the first intermediate sheet.

2. The absorbent article according to claim 1, wherein

the liquid-transport property is liquid permeability, and

the first intermediate sheet has a higher liquid permeability than the second intermediate sheet.

3. The absorbent article according to claim 2, wherein

the first intermediate sheet is further provided with a plurality of liquid-permeable pores.

4. The absorbent article according to claim 1, wherein

the liquid-transport property is a liquid-drawing ability, and

the second intermediate sheet has a higher liquid-drawing ability than the first intermediate sheet.

5. The absorbent article according to claim 4, wherein

the second intermediate sheet has a stronger capillary action than the first intermediate sheet.

6. The absorbent article according to claim 4, wherein

the second intermediate sheet has a higher hydrophilic property than the first intermediate sheet.

7. The absorbent article according to claim 1, wherein

the second intermediate sheet is continuously disposed parallel with the first intermediate sheet in the longitudinal direction.

8. An absorbent article according to claim 3, wherein

a part of the second intermediate sheet is disposed in laminate, being overlapped in a direction of width by at least a part of the first intermediate sheet.

9. An absorbent article according to claim 5, wherein

a part of the second intermediate sheet is disposed in laminate, being overlapped in a direction of width by at least a part of the first intermediate sheet.

10. An absorbent article according to claim 6, wherein

a part of the second intermediate sheet is disposed in laminate, being overlapped in the direction of width by at least a part of the first intermediate sheet.

11. The absorbent article according to claim 7, further comprising:

a folding part, predetermined to be folded substantially perpendicular to the longitudinal direction;

the first intermediate sheet disposed on one side of the folding part in the longitudinal direction; and

a part of a second intermediate sheet disposed on the other side of the folding part in the longitudinal direction.

12. The absorbent article according to claim 11, wherein

the second intermediate sheet is thicker than the first intermediate sheet, and

the second intermediate sheet is longer than the first intermediate sheet in the longitudinal direction.

13. The absorbent article according to claim 8, further comprising:

the folding part, predetermined to be folded substantially perpendicular to the longitudinal direction;

the first intermediate sheet disposed on one side of the folding part in the longitudinal direction; and

a part of a second intermediate sheet disposed on the other side of the folding part in the longitudinal direction.

14. The absorbent article according to claim 13, wherein

the second intermediate sheet is thicker than the first intermediate sheet, and

the second intermediate sheet is longer than the first intermediate sheet in the longitudinal direction.