Water-dispersible fibrous nonwoven coform composites
AssigneeKimberly-Clark Worldwide, Inc.
InventorsWilliam Seal Pomplun, David Martin Jackson, Pavneet Singh Mumick
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Abstract
Disclosed herein is a fibrous nonwoven composite structure more commonly referred to as a coform structure. Unlike current coform structures, the material of the present invention is more water-dispersible due to the use of a water-degradable reinforcing fiber matrix.
Claims23
A water-dispersible fibrous nonwoven composite structure comprising a matrix of meltspun water-degradable reinforcing fibers and a multiplicity of discrete absorbent fibers disposed within said matrix of meltspun water-degradable reinforcing fibers wherein said meltspun fibers further comprise a water-dispersible polymer that remains stable in the presence of an aqueous solution having greater than about 1000 ppm of a kosmotrope and disperses in a period not exceeding 30 minutes in an aqueous solution having less than about 1000 ppm of a kosmotrope.
A water-dispersible fibrous nonwoven composite structure comprising a matrix of meltspun water-degradable reinforcing fibers and a plurality of particles disposed within and held by said matrix, wherein said meltspun water-degradable reinforcing fibers further comprising a water-dispersible polymer having a first peak tensile stress in the presence of an aqueous solution having greater than about 1000 ppm of a kosmotrope and a second peak tensile stress in the presence of an aqueous solution having less than about 1000 ppm of a kosmotrope, said second peak tensile stress being at least 90% less than said first peak tensile stress.
A water-dispersible fibrous nonwoven composite structure consisting essentially of a matrix of meltspun, ionically triggerable, water-degradable reinforcing fibers and a multiplicity of discrete absorbent fibers disposed within said matrix, wherein said composite structure disperses in a period not exceeding 30 minutes in deionized water.
Dependencies are inferred from the claim text.