	US 11,939,725 B2
	Hot-extraction paper
Elisabeth Schwaiger, St. Stefan (AT); Franz Joebstl, St. Stefan (AT); and Reinhard Kainz, Wolfsberg (AT)
Assigned to MONDI AG, Vienna (AT)
Appl. No. 17/413,684
Filed by MONDI AG, Vienna (AT)
PCT Filed Dec. 11, 2019, PCT No. PCT/EP2019/084568 § 371(c)(1), (2) Date Jun. 14, 2021, PCT Pub. No. WO2020/120535, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. A 374/2018 (AT), filed on Dec. 14, 2018.
Prior Publication US 2022/0064867 A1, Mar. 3, 2022
Int. Cl. D21H 27/08 (2006.01); D21H 11/20 (2006.01); D21H 15/02 (2006.01); D21H 25/14 (2006.01)

CPC D21H 27/08 (2013.01) [D21H 11/20 (2013.01); D21H 15/02 (2013.01); D21H 25/14 (2013.01)]

12 Claims

1. A hot-extraction paper consisting substantially of cellulose and manufacturing assistants needed in cellulose production, such as pH modifiers based on acids or bases, wherein the paper comprises exclusively cellulose having fibre lengths of at least 2.0 mm on length-weighted average, and the paper has isotropic extension properties which are substantially equal in machine and cross directions and amount to at least 7.5%.