Absorbent and absorbent article provided therewith

摘要

The present invention addresses the problem of providing a novel absorbent that comprises a water-absorbing cellulose-based fiber and a thermoplastic resin fiber, said thermoplastic resin fiber containing as a monomer component an unsaturated carboxylic acid or an unsaturated carboxylic acid anhydride, and has both a sufficient strength and a sufficient absorption property. The absorbent comprises a water-absorbing cellulose-based fiber and a thermoplastic resin fiber, said thermoplastic resin fiber containing as a monomer component an unsaturated carboxylic acid or an unsaturated carboxylic acid anhydride, wherein the mass ratio (the content of the water-absorbing cellulose-based fiber: the content of the thermoplastic resin fiber) is controlled to 90:10 to 50:50 and the density of the absorbent is controlled to 0.06 to 0.14 g/cm3.

主权项

1. An absorbent article comprising a liquid-permeable layer, a liquid-impermeable layer, and an absorbent body provided between the liquid-permeable layer and the liquid-impermeable layer, wherein:
the absorbent body obtained by injecting high-pressure steam onto a mixed material comprising cellulose-based water-absorbent fibers and thermoplastic resin fibers that comprise an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride or a mixture thereof as a monomer component, to increase a density of the mixed material a mass ratio of the water-absorbent fibers to the thermoplastic resin fibers in the absorbent body is 80:20 to 50:50; a density of the absorbent body is 0.06 to 0.14 g/cm3; a basis weight of the absorbent body is 100 to 400 g/m2; and the liquid-permeable layer comprises a blood modifying agent with an IOB of 0.00-0.60, a melting point of 45° C. or less, and a water solubility of 0.00-0.05 g in 100 g of water at 25° C.; wherein the absorbent body has a ridge-furrow structure formed on a surface of the liquid-permeable layer side of the absorbent body and a surface of the liquid-impermeable layer side of the absorbent body; and the ridge-furrow structure formed on the surface of the liquid-permeable layer side extends in the lengthwise direction of the absorbent article, while the ridge-furrow structure formed on the surface of the liquid-impermeable layer side extends in the widthwise direction of the absorbent article.