| 摘要 |
The purpose of the present invention is to improve an absorbent material for sanitary products and provide an absorbent material that can be thinned. An absorbent material (1) comprising a absorptive core (4) that contains highly water-absorbable polymer particles (2) and water-absorbable fibers (3) and a sheet member (5) that encloses the absorptive core, wherein the water retaining capacity of the highly water-absorbable polymer particles is 37 g/g or more, the 5 min. DW value, which is an absorption amount achieved when the highly water-absorbable polymer particles are immersed in physiological saline for 5 minutes, is 40 ml/g or more, the late-stage water absorption speed, which is calculated from a time required for increasing the absorption amount in the highly water-absorbable polymer particles from 40 ml/g to 50 ml/g, is 6 ml/g·min or more, the SFC under slightly pressurized conditions, which is a measure for liquid diffusion performance under slightly pressurized conditions, is 5 × 10-6 ·ml·sec or more, and the repeated absorption power index, which is defined by "(water retaining capacity) × (late-stage absorption speed) × (SFC under slightly pressurized conditions × 103)", is 2 or more. |
