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Abstract

A method is disclosed for determining the efficiency of an absorbent article having first and second absorbent layers. The method comprises the steps of selecting a density for the first absorbent layer and for the second absorbent layer. A basis weight for each of the first and second absorbent layers is selected which is at least about 100 grams per square meter. A desired percentage of a superabsorbent to be present in each of the first and second absorbent layers is also selected. The percentage of a superabsorbent present in the first absorbent layer is greater than the percentage of a superabsorbent present in the second absorbent layer. The selected densities and percentages of a superabsorbent are then inserted into the following formula: V.ltoreq.[(100-% SAM2).times.(d2-d1)]+[(% SAM1-% SAM2).times.d2)] In this formula: % SAM1 is the percentage of a superabsorbent present in the first absorbent layer; % SAM2 is the percentage of a superabsorbent present in the second absorbent layer; d1 is the density of the first absorbent layer expressed in gsm; d2 is the density of the second absorbent layer expressed in gsm; and V is the desired value to form an efficiency absorbent article. The selected densities and the selected percentages of a superabsorbent in the first and second absorbent layers are then adjusted to obtain a value 'V' which is at least equal to 2.

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