Liquid distribution mat made of enhanced cellulosic fibers
AssigneeRayonier TRS Holding Inc.
InventorsOthman A. Hamed, Harry J. Chmielewski
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Abstract
A liquid distribution mat that is a wet-laid mat of enhanced cellulosic fibers that are cellulosic fibers cross-linked in sheet form, as well as methods of making the liquid distribution mat. The liquid distribution mat has high vertical wicking properties and excellent structural integrity in both wet and dry states. The liquid distribution mat is suitable for use in an absorbent article. When used in an absorbent article such as a baby diaper, the liquid distribution mat rapidly acquires and transports bodily discharges from the point of insult to other regions of the absorbent article, thereby maximizing the utilization of the absorbent article.
Claims32
A liquid distribution mat comprising a wet-laid mat of enhanced cellulosic fibers, wherein the enhanced cellulosic fibers are cellulosic fibers cross-linked in sheet form and have:
- less than 4.5 weight % cross-linking agent;
- a kink angle of less than about 50° and less than 2 kinks per millimeter;
- wherein the wet-laid mat has:
- a basis weight of from about 100 to about 400 grams per square meter;
- a density of from about 0.05 to about 0.15 grams per cubic centimeter;
- a Free Volume of from about 5 mL/g to about 12 mL/g;
- a Vertical Absorption Height of greater than about 10 centimeters;
- and
- a Vertical Desorption Height that is not more than 200% of the Vertical Absorption Height.
Dependencies are inferred from the claim text.