Patent ID: 9512563
Filing Date: 2016-12-06
CPC Classification: D21C

Claim Text:
1. A method of making an absorbent core having improved embossability comprising: including in the core, fiber that has been oxidized during at least one stage of a multi-stage bleaching process with a peroxide and a catalyst under acidic condition, wherein the multi-stage bleaching process comprises at least one bleaching stage following the oxidation stage, wherein the ISO brightness of the fiber at the end of the multi-stage bleaching process comprising the at least one oxidation stage is at least about 88, wherein the fiber does not comprise an optical brightening agent, wherein the fiber exhibits a hemicellulose content from about 16% to about 25%, an aldehyde content ranging from about 1 meq/100 g to about 9 meq/100 g, and a carboxyl content of at least about 3 meq/100 g, and wherein the fiber has further been treated with a surfactant.