US 11,692,291 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. 16/978,889
Filed by Glatfelter Corporation, Charlotte, NC (US)
PCT Filed Mar. 12, 2019, PCT No. PCT/US2019/021869
§ 371(c)(1), (2) Date Sep. 8, 2020,
PCT Pub. No. WO2019/178111, PCT Pub. Date Sep. 19, 2019.
Claims priority of provisional application 62/641,865, filed on Mar. 12, 2018.
Prior Publication US 2020/0407895 A1, Dec. 31, 2020
Int. Cl. D04H 1/732 (2012.01); A61F 13/537 (2006.01); D04H 1/4291 (2012.01); D04H 1/435 (2012.01); D04H 1/541 (2012.01); D04H 1/425 (2012.01); D04H 1/4374 (2012.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 5/08 (2006.01); B32B 3/30 (2006.01); A61F 13/15 (2006.01); A61F 13/53 (2006.01); A61F 13/45 (2006.01)
CPC D04H 1/732 (2013.01) [A61F 13/537 (2013.01); B32B 3/30 (2013.01); B32B 5/022 (2013.01); B32B 5/08 (2013.01); B32B 5/266 (2021.05); B32B 5/271 (2021.05); 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); A61F 2013/15308 (2013.01); A61F 2013/15373 (2013.01); A61F 2013/15406 (2013.01); A61F 2013/15487 (2013.01); A61F 2013/15943 (2013.01); A61F 2013/15991 (2013.01); A61F 2013/4587 (2013.01); A61F 2013/530007 (2013.01); B32B 2262/062 (2013.01); B32B 2262/124 (2021.05); B32B 2262/144 (2021.05); B32B 2307/718 (2013.01); B32B 2307/726 (2013.01); B32B 2432/00 (2013.01); B32B 2555/02 (2013.01); D10B 2201/01 (2013.01); D10B 2321/021 (2013.01); D10B 2331/04 (2013.01); D10B 2401/022 (2013.01)] 18 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 about 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,
wherein the nonwoven material is patterned on at least one surface in the cross-machine direction (CD).