	US 12,290,426 B2
	Treated nonwoven having an affinity for an active ingredient
Sven Krister Erlandsson, Advance, NC (US); Pierre Grondin, Mooresville, NC (US); and Ralph A. Moody, III, Mooresville, NC (US)
Assigned to AVINTIV SPECIALTY MATERIALS INC., Charlotte, NC (US)
Filed by AVINTIV Specialty Materials Inc., Charlotte, NC (US)
Filed on Jun. 14, 2021, as Appl. No. 17/346,360.
Application 17/346,360 is a division of application No. 15/208,845, filed on Jul. 13, 2016, granted, now 11,065,160.
Claims priority of provisional application 62/191,847, filed on Jul. 13, 2015.
Prior Publication US 2021/0315746 A1, Oct. 14, 2021
Int. Cl. A61F 13/511 (2006.01); A61F 13/15 (2006.01); A61F 13/51 (2006.01); A61L 15/24 (2006.01); A61L 15/44 (2006.01); A61L 15/56 (2006.01); D04H 1/4391 (2012.01); D04H 3/016 (2012.01); D04H 3/018 (2012.01)

CPC A61F 13/51113 (2013.01) [A61F 13/15658 (2013.01); A61F 13/511 (2013.01); A61L 15/24 (2013.01); A61L 15/44 (2013.01); A61L 15/56 (2013.01); D04H 1/43912 (2020.05); D04H 1/43914 (2020.05); D04H 1/43918 (2020.05); D04H 3/016 (2013.01); D04H 3/018 (2013.01); A61F 2013/51009 (2013.01); A61F 2013/51023 (2013.01); A61F 2013/51028 (2013.01); A61F 2013/5109 (2013.01); A61F 2013/51117 (2013.01); A61L 2300/21 (2013.01)]

18 Claims

1. 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 cm²per gram of fiber content.