High absorbency lyocell fibers and method for producing same
OwnerHien Vu Nguyeninventor
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Abstract
High absorbency lyocell fibers are obtainable by hydrothermal treatment. The fibers can be treated with water at temperature of at least about 60° C. to provide lyocell fibers that can be formed into a random fibrous plug having a mass of 2 g, a density of 4 g/cm3, and a diameter of 25 mm which has a GAT Absorbency (at 15 min.) of at least about 3.7 g/g.
Claims13
An absorbent tampon comprising an absorbent structure consisting essentially of lyocell fibers, the tampon having a density of about 0.3 to about 0.5 g/cm3 and a Syngyna Absorbency of at least about 4.4 g/g.
A fibrous structure comprising lyocell fibers capable of being formed into a random fibrous plug having a mass of 2 g, a density of 4 g/cm3, and a diameter of 25 mm which has a GAT Absorbency (at 15 min.) of at least about 3.7 g/g.
A method for increasing the absorbency of lyocell fibers, comprising:
- (a) hydrothermally treating the lyocell fibers with water at a temperature of at least about 60° C. for about one to sixty minutes;
- and
- (b) drying the treated lyocell fibers to a moisture content of less than about 20 wt-%;
- wherein the treated lyocell fibers are capable of being formed into a random fibrous plug having a mass of 2 g, a density of 4 g/cm3, and a diameter of 25 mm which has a GAT Absorbency (at 15 min.) of at least about 3.7 g/g.
Dependencies are inferred from the claim text.