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Patents

Treated Nonwoven Having an Affinity for an Active Ingredient

U.S. Patent No. 12,290,426

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By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Sven Krister Erlandsson, Advance, NC; Pierre Grondin, Mooresville, NC; and Ralph A. Moody, III, Mooresville, NC.
Assigned to Avintiv Specialty Materials Inc., Charlotte, NC.

Filed: 6/14/21
Issued: 5/6/25

A method of manufacturing a nonwoven comprising: (a) forming at least a first nonwoven layer having a fiber content consisting of a plurality of non-round cross-sectional shaped spunbond fibers, wherein the plurality of non-round cross-sectional shaped spunbond fibers have a bilobal shape, a trilobal shape, a bowtie shape, a ribbon-shape or any combination thereof, and (b) disposing an active ingredient substantially at a surface of the plurality of non-round cross-sectional shaped spunbond fibers; and wherein the first nonwoven has a strike through time that is less than 10 seconds for all three insults when tested per WSP 70.7(05); and wherein the first nonwoven layer has a theoretical surface area of greater than about 4200 cm2 per gram of fiber content.

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