Patent ID: 7935207
Filing Date: 2011-05-03
Classification: A61F,B29C,B29K,B29L,Y10T

Abstract:
1. A method of making an absorbent core for use in an absorbent article, said method comprising the steps of: a. providing a first absorbent fibrous web material; b. providing a second absorbent fibrous web material, the first and second absorbent fibrous web materials, if combined into a web prior to deforming each of the first and second absorbent fibrous web materials, forming a combined web having an initial permeability and an initial capillary pressure; c. providing a pair of rolls forming a nip through which said first and second absorbent fibrous web materials can be processed, said pair of rolls being selected from the processes consisting of ring rolling, SELF, micro-SELF, and rotary knife aperturing; d. deforming said first absorbent fibrous web material by processing through said pair of rolls; e. deforming said second absorbent fibrous web material by processing through said pair of rolls; and f. after deforming each of the first and second absorbent fibrous web materials, combining said first and second deformed absorbent fibrous web materials to form said absorbent core, the absorbent core having a permeability higher than the initial permeability and a capillary pressure substantially equal to the initial capillary pressure.