Porous sheet, absorbent article using porous sheet and manufacturing method thereof

摘要

There is provided a porous sheet having an uneven surface and a plurality of through holes formed therein. The porous sheet is formed of a sheet including a higher density region and a lower density region, one of which is interspersed in another. The sheet is elongated to form the uneven surface simultaneously with the through holes at the boundary portions between the higher density region and the lower density region.