US 11,806,976 B2
Nonwoven material with high core bicomponent fibers
James B. Parsons, Memphis, TN (US); Alan J. Campbell, Germantown, TN (US); Timothy J. Kistemaker, Mooresville, NC (US); Ronald T. Moose, Lakeland, TN (US); Jacek K. Dutkiewicz, Cordova, TN (US); Brian Fong, Lakeland, TN (US); and Thomas J. Cavanaugh, Cordova, TN (US)
Assigned to Glatfelter Corporation, Charlotte, NC (US)
Appl. No. 16/651,711
Filed by Glatfelter Corporation, Charlotte, NC (US)
PCT Filed Sep. 25, 2018, PCT No. PCT/US2018/052614
§ 371(c)(1), (2) Date Mar. 27, 2020,
PCT Pub. No. WO2019/067432, PCT Pub. Date Apr. 4, 2019.
Claims priority of provisional application 62/564,108, filed on Sep. 27, 2017.
Prior Publication US 2020/0255992 A1, Aug. 13, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 5/02 (2006.01); D04H 1/541 (2012.01); B32B 5/26 (2006.01); B32B 7/12 (2006.01); D01F 8/06 (2006.01); D01F 8/14 (2006.01); D04H 1/4291 (2012.01); D04H 1/435 (2012.01); D04H 1/732 (2012.01); D04H 1/4374 (2012.01); D04H 1/425 (2012.01); A61F 13/53 (2006.01)
CPC B32B 5/022 (2013.01) [B32B 5/26 (2013.01); B32B 7/12 (2013.01); D01F 8/06 (2013.01); D01F 8/14 (2013.01); D04H 1/425 (2013.01); D04H 1/4291 (2013.01); D04H 1/435 (2013.01); D04H 1/4374 (2013.01); D04H 1/5412 (2020.05); D04H 1/5418 (2020.05); D04H 1/732 (2013.01); A61F 2013/53024 (2013.01); A61F 2013/530386 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2255/02 (2013.01); B32B 2260/021 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0284 (2013.01); B32B 2262/062 (2013.01); B32B 2262/12 (2013.01); B32B 2262/124 (2021.05); B32B 2262/144 (2021.05); B32B 2307/726 (2013.01); B32B 2432/00 (2013.01); B32B 2555/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An airlaid nonwoven material, comprising:
a first layer comprising first high core bicomponent fibers having a polyester core and a polyethylene sheath and a core to sheath ratio of greater than 1:1; and
a second layer comprising first bicomponent fibers having a core to sheath ratio of less than 1:1 blended with second high core bicomponent fibers having a core to sheath ratio of greater than 1:1.