JP2018094309A5 - - Google Patents

Description

In order to solve the above-mentioned problems, a polymer sheet in which a superabsorbent polymer is disposed between at least two layers is interposed between a liquid-permeable top sheet and a back sheet as the present invention according to claim 1. In the absorbent article made,
In a region including the skin a side body fluid discharge portions of the liquid-permeable topsheet, with recessed non-skin side, it is surrounded by a ridge-like protrusions surrounding continuous, range of the liquid-permeable surface sheet thickness There is provided an absorbent article characterized in that a large number of recesses composed of recesses formed at a depth inside are formed in a continuous lattice pattern.

In the first aspect of the present invention, a sheet-like polymer sheet in which only the superabsorbent polymer is disposed between at least two layers of sheets and no fibrous absorbent material made of piled pulp or the like is interposed between the sheets is used. In the absorbent article, the skin side surface of the liquid-permeable surface sheet and the region including the body fluid discharge site are recessed on the non-skin side and surrounded by a ridge-like convex portion that is continuous around the liquid-permeable surface. Since a large number of recesses composed of recesses formed at a depth within the thickness range of the sheet are formed in a continuous lattice pattern, the discharged body fluid is temporarily stored in the recesses, and then the lower layer It penetrates into the absorber on the side. In the recess, since the surface of the surface sheet is more compact than the conventional one in which such a recess is not provided, the permeation rate of the body fluid into the sheet is slightly reduced, and the body fluid that has entered the recess is temporarily Therefore, the penetration rate of body fluid into the lower polymer sheet is moderately suppressed, and the absorption rate of the superabsorbent polymer, which is slower than the pulp, is absorbed from the liquid-permeable surface sheet. The balance with the permeating speed becomes good, and the body fluid diffused through the polymer sheet is surely absorbed and retained by the superabsorbent polymer without causing overflow in the polymer sheet.

Claims (7)

In the absorbent article in which a polymer sheet in which a superabsorbent polymer is disposed between at least two layers between the liquid-permeable front sheet and the back sheet,
In a region including the skin a side body fluid discharge portions of the liquid-permeable topsheet, with recessed non-skin side, it is surrounded by a ridge-like protrusions surrounding continuous, range of the liquid-permeable surface sheet thickness An absorptive article characterized in that a large number of recesses composed of recesses formed at a depth inside are formed in a continuous lattice pattern.   The absorbent article according to claim 1, wherein the bottom surface of the recess is formed in a cross-sectional shape in which the depth gradually increases toward the center of the recess.   The area of the said recessed part is 1.5-20 times with respect to the area of the said convex part, The absorbent article in any one of Claims 1 and 2. Area per one of the recess, the absorbent article according to any one claims 1 to 3 is 30 -1000 mM ^2.   The said recessed part is an absorbent article in any one of Claims 1-4 welded to the non-skin side surface of the said liquid-permeable surface sheet in the deepest part of a center part.   The absorptive article according to any one of claims 1 to 5 whose plane shape of said crevice is a polygon, a circle, or an ellipse.   The absorbent article according to any one of claims 1 to 6, wherein the liquid-permeable surface sheet is composed of a single-layer sheet or a multilayer structure in which a plurality of sheets are laminated.