Patent ID: 7694644

Claim:
An apparatus for pattern-coating a dispersion slurry containing a water-absorbing solid dispersed in a dispersion medium on a substrate sheet, comprising: a traveling mechanism for traveling said substrate sheet into the longitudinal direction thereof a rotating pattern roll having a predetermined convex-and-concave pattern on the circumference surface thereof such that the center of axle is vertically positioned; a cover film for covering the circumference surface of said rotating pattern roll to prevent said dispersion slurry from being contact with the circumference surface of said rotating pattern roll, a front end of said cover film being positioned in the downstream from the lowest position of said rotating pattern roll; and a slurry supplier for continuously supplying said dispersion slurry on the said substrate sheet from a discharge portion of said supply supplier at a outlet position being positioned between said cover film and said substrate sheet; wherein the surface of the substrate sheet having formed thereon a first region and a second region, the thickness of the first region of the coating layer is thicker than the second region, the thickness of the coating layer in the second region is thinner or does not have the coating layer, and wherein the pattern corresponds to the pattern of the convex-and-concave portion of the rotating pattern roll by pushing the coating film via the rotating pattern roll into the surface of the coating layer.