	US 12,297,600 B2
	Fluff pulp
Helena Tufvesson, Gävle (SE); Marianne König, Stockholm (SE); Gunilla Söderstam, Stockholm (SE); and Antonina Munguia-Chang, Gävle (SE)
Assigned to Stora Enso OYJ, Helsinki (FI)
Appl. No. 17/753,448
Filed by Stora Enso OYJ, Helsinki (FI)
PCT Filed Sep. 3, 2020, PCT No. PCT/IB2020/058188 § 371(c)(1), (2) Date Mar. 3, 2022, PCT Pub. No. WO2021/044321, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 1951006-4 (SE), filed on Sep. 4, 2019.
Prior Publication US 2022/0290376 A1, Sep. 15, 2022
Int. Cl. D21H 27/00 (2006.01); A61F 13/15 (2006.01); D21C 3/02 (2006.01); D21C 9/00 (2006.01); D21C 9/147 (2006.01); D21H 11/16 (2006.01); D21H 15/04 (2006.01); A61F 13/53 (2006.01)

CPC D21H 27/007 (2013.01) [A61F 13/15 (2013.01); D21C 3/02 (2013.01); D21C 9/007 (2013.01); D21C 9/147 (2013.01); D21H 11/16 (2013.01); D21H 15/04 (2013.01); A61F 2013/530007 (2013.01)]

11 Claims

1. Fluff pulp having a Kappa number in a range of from 5 to 18 and having, when in a form of a dry sheet, an ISO brightness in a range of from 30 to 60% and having a specific volume in a dry defibrated state of at least 19 dm³/kg and having an absorption time in a range of from 2 to 4 seconds according to the standard SCAN-C 33:80, wherein at least 90% of fibers of the fluff pulp originate from softwood.