초록 ▼

An absorbent article having an upper, liquid-permeable cover layer (2), a lower, liquid-impermeable backsheet (4), an absorbent body (6) arranged between the cover layer (2) and the backsheet (4), and an air-exchange system arranged between the cover layer (2) and the backsheet (4) having at least o

An absorbent article having an upper, liquid-permeable cover layer (2), a lower, liquid-impermeable backsheet (4), an absorbent body (6) arranged between the cover layer (2) and the backsheet (4), and an air-exchange system arranged between the cover layer (2) and the backsheet (4) having at least one air-exchange (5; 43) and at least one air-exchange duct (10) having a longitudinal extension and a cross-sectional area, the air-exchange duct (10) constituting a communicating duct with regard to air communication between the air-exchange (5; 43) and the surroundings of the absorbent article. The air-exchange (5; 43) comprises a material which is compressible and resilient in all directions, essentially non-absorbent and air-permeable, and the air-exchange duct (10) has a compressible and resilient, essentially non-absorbent material, the air-exchange duct displaying air-permeability.

대표청구항 ▼

The invention claimed is: 1. An absorbent article comprising: an upper, liquid-permeable cover layer, a lower, liquid-impermeable backsheet, an absorbent body arranged between the cover layer and the backsheet, and an air-exchange system arranged between the cover layer and the backsheet comprising

The invention claimed is: 1. An absorbent article comprising: an upper, liquid-permeable cover layer, a lower, liquid-impermeable backsheet, an absorbent body arranged between the cover layer and the backsheet, and an air-exchange system arranged between the cover layer and the backsheet comprising at least one air-exchange and at least one air-exchange duct having a longitudinal extension and a cross-sectional area, wherein said at least one air-exchange duct provides two-way air communication between the air-exchange and the surroundings of the absorbent article such that said at least one air-exchange duct defines an air inlet wherein air from the surroundings enters the air-exchange and said at least one air-exchange duct defines an air outlet wherein air exits the air-exchange through said at least one air-exchange duct, wherein the air-exchange is compressible and resilient in all directions, essentially non-absorbent and air-permeable, said air-exchange being in direct contact with the absorption body over a contact surface such that the contact surface is open with regard to air communication between the air exchange and the absorption body; and wherein the air-exchange duct comprises a compressible and resilient, essentially non-absorbent material, and displays air-permeability. 2. The absorbent article according to claim 1, wherein the volume of the air-exchange is at least two times greater than the volume of the air-exchange duct. 3. The absorbent article according to claim 2, wherein the volume of the air-exchange is at least five times greater than the volume of the air-exchange duct. 4. The absorbent article according to claim 2, wherein the volume of the air-exchange is at least seven times greater than the volume of the air-exchange duct. 5. The absorbent article according to claim 1, wherein the air-exchange comprises an essentially non-absorbent hydrophobic fibre wadding. 6. The absorbent article according to claim 5, wherein the capillaries of the air-exchange are larger than the capillaries of the absorbent body. 7. The absorbent article according to claim 1, wherein the air-exchange comprises an essentially non-absorbent foamed plastic having open cells. 8. Absorbent article according to claim 1, wherein the entire contact surface between the air-exchange and the absorbent body is open with regard to air communication. 9. The absorbent article according to claim 1, wherein the air-permeable non-absorbent material of the air-exchange duct comprises an essentially non-absorbent hydrophobic fibre wadding. 10. The absorbent article according to claim 1, wherein the air-permeable non-absorbent material of the air-exchange duct comprises an essentially non-absorbent foamed plastic comprising open cells. 11. The absorbent article according to claim 1, wherein the air-permeable non-absorbent material of the air-exchange duct consists of a flexible thin tube. 12. The absorbent article according to claim 1, wherein the absorbent article has two air-exchange ducts extending from the air-exchange to two different places on the periphery of the absorbent article. 13. The absorbent article according to claim 1, wherein at least one absorbent material piece is arranged between the air-exchange duct and the liquid-impermeable backsheet. 14. The absorbent article according to claim 1, wherein the air-exchange duct has a curved extension. 15. The absorbent article according to claim 14, wherein the curve has an S-shape. 16. The absorbent article according to claim 1, wherein the absorbent article is a baby diaper, the air-exchange having a length within the range 5-25 cm, a width within the range 3-12 cm and a thickness within the range 0.3-3 cm. 17. The absorbent article according to claim 1, wherein the absorbent article is an incontinence device, the air-exchange having a length within the range 10-50 cm, a width within the range 3-15 cm and a thickness within the range 0.3-3 cm. 18. The absorbent article according to claim 1, wherein the absorbent article is a sanitary towel or an incontinence device for use for light incontinence, the air-exchange having a length within the range 2-20 cm, a width within the range 2-8 cm and a thickness within the range 0.2-3 cm. 19. The absorbent article according to claim 1, wherein, upon compression of the air exchange, air is discharged out from the absorbent article by way of said at least one air-exchange duct and wherein, upon expansion of the air exchange, air surrounding the absorbent article is drawn therein by way of said at least one air-exchange duct, thereby defining two-way air communication between the air-exchange and the surroundings of the absorbent article through said at least one air-exchange duct. 20. The absorbent article according to claim 1, wherein air from the surroundings both enters the air-exchange and exits the air-exchange directly through the same said at least one air-exchange duct.