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US 4,364,992 AGranted
Two layer absorbent article with super water-absorbing polymer
AssigneeKao Soap Co., Ltd.
InventorsOsamu Ito, Kazunori Nishizawa
Life of this patent
Estimating the term…
Abstract
An absorbent article comprising an upper, first, absorbing layer formed so that its density under a load of 35 g/cm.sup.2 is lower than 0.045 g/cm.sup.3 both in the dry state and in the wet state and the weight per square meter is 15 to 50 g, and a lower, second, absorbing layer having a super water-absorbing polymer fixed thereto.
Claims7
An absorbent article, comprising:
- an upper, first, absorbing layer having a density, in both the dry state and the wet state, of less than 0.045 g/cm.sup.3 when measured under a load of 35 g/cm.sup.2, wherein the density in the wet state does not include the density of absorbed liquid, said first absorbing layer weighing from 15 to 50 g/m.sup.2, said first absorbing layer being a felt made of bonded fibrous webs and being comprised of from 30 to 60% by weight of hollow polyester fibers and from 30 to 50% by weight of heat-fusible fibers;
- and a lower, second, absorbing layer having a super water-absorbing polymer fixed thereto.
Dependencies are inferred from the claim text.