Highly air-permeable and water-resistance sheet, a highly air-permeable and water-resistance sheet composite and an absorbent article, and a method for manufacturing a highly air-permeable and water-resistance sheet and a method for manufacturing a highly air-permeable and water-resistance sheet composite

1. A highly air-permeable and water-resistance sheet comprising a hydrophobic non-woven fabric layer having 100 mm H 2 O or more of water pressure resistance; and a fine cellulose fiber layer layered on said hydrophobic non-woven fabric layer,

wherein a water repellant layer is layered on either surface of said highly air-permeable and water-resistance sheet, and said fine cellulose fiber constituting said fine cellulose fiber layer has 0.3 mm or less of average fiber length and has 15 mL/g or more of hydration capacity.

2. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said non-woven fabric is spun melt non-woven fabric made of polyolefins.

3. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said non-woven fabric is melt blown non-woven fabric.

4. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said non-woven fabric is composite non-woven fabric of spun bond and melt blown non-woven fabric.

5. The highly air-permeable and water-resistance sheet according to claim 1 , wherein the weight of said fine cellulose fiber layer is in the range of 2 to 20 g/m 2 .

6. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said water repellant layer is layered on both surfaces of said highly air-permeable and water-resistance sheet.

7. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said water repellant layer comprises an olefinic water repellent, a synthetic resin binder and a cross linker.

8. The highly air-permeable and water-resistance sheet according to claim 7 , wherein said synthetic resin binder is styrene butadiene resin.

9. The highly air-permeable and water-resistance sheet according to claim 7 , wherein said cross linker is ammonia zirconium carbonate.

10. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said water repellant layer further comprises a deodorizer.

11. The highly air-permeable and water-resistance sheet according to claim 10 , wherein said deodorizer is zeolite originated from natural resources.

12. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said highly air-permeable and water-resistance sheet is subjected to heat press treatment.

13. The highly air-permeable and water-resistance sheet according to claim 1 , wherein said highly air-permeable and water-resistance sheet is heat treated so as to melt at least part of compositions of said hydrophobic non-woven fabric layer.

14. A highly air-permeable and water-resistance sheet composite comprising a hydrophobic non-woven fabric layer and having 100 mm H 2 O or more of water pressure resistance; a fine cellulose fiber layer layered on said hydrophobic non-woven fabric layer; and a water repellant layer layered on said fine cellulose fiber layer,

wherein said highly air-permeable and water-resistance sheet composite comprises another non-woven fabric layered onto said water repellant layer.

15. The highly air-permeable and water-resistance sheet composite according to claim 14 , comprising another fine cellulose fiber layer between said water repellant layer and said another non-woven fabric.

16. An absorbent article comprising a highly air-permeable and water-resistance sheet as claimed in claim 1 , and an absorbent body layered on said highly air-permeable and water-resistance sheet.

17. An absorbent article comprising a highly air-permeable and water-resistance sheet composite as claimed in claim 14 , and an absorbent body layered on said highly air-permeable and water-resistance sheet composite.

18. The absorbent article as claimed in claim 16 , wherein said absorbent body has regions containing SAP and not containing SAP.

19. The absorbent article as claimed in claim 16 , wherein said absorbent body contains 50% or more of said SAP relative to the weight of said absorbent body.

20. The absorbent article as claimed in claim 16 , further comprising a buffer sheet between said highly air-permeable and water-resistance sheet and said absorbent body.

21. The absorbent article as claimed in claim 20 , wherein said buffer sheet is an apertured film.

22. The absorbent article as claimed in claim 20 , wherein a ratio of the surface area of said buffer sheet is assigned as “P” and the surface area of said is highly air-permeable and water-resistance sheet is assigned as “Q”, a ratio of P/Q×100 is in the range of 10% to 50%.