	US 12,256,771 B2
	Lightweight separating base paper
Tuomas Turtola, Lukana (FI)
Assigned to DELFORTGROUP AG, Traun (AT)
Appl. No. 17/257,807
Filed by DELFORTGROUP AG, Traun (AT)
PCT Filed May 14, 2019, PCT No. PCT/EP2019/062260 § 371(c)(1), (2) Date Jan. 4, 2021, PCT Pub. No. WO2020/020503, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 10 2018 118 271.6 (DE), filed on Jul. 27, 2018.
Prior Publication US 2021/0274831 A1, Sep. 9, 2021
Int. Cl. A24D 1/02 (2006.01); A24D 1/20 (2020.01); D21H 11/02 (2006.01); D21H 19/12 (2006.01); D21H 19/40 (2006.01); D21H 19/52 (2006.01); D21H 19/54 (2006.01); D21H 19/60 (2006.01); D21H 19/82 (2006.01); D21H 27/00 (2006.01)

CPC A24D 1/02 (2013.01) [A24D 1/20 (2020.01); D21H 11/02 (2013.01); D21H 19/12 (2013.01); D21H 19/40 (2013.01); D21H 19/52 (2013.01); D21H 19/54 (2013.01); D21H 19/60 (2013.01); D21H 19/828 (2013.01); D21H 27/00 (2013.01)]

30 Claims

1. Smoking article comprising a smokable material, which is capable of generating an aerosol upon combustion or heating, wherein the smokable material is wrapped with a paper serving as a wrapping material, said paper having a basis weight of at least 25 g/m²and at most 40 g/m², and a density of at least 0.90 g/cm³and at most 1.15 g/cm³, wherein the paper comprises at least 50% by weight softwood pulp and is coated on at least one side with at least two coatings,

wherein the first coating is located between the paper surface and the second coating,

wherein the second coating is the topmost coating and is a water-soluble film-forming polymer, nano-fibrillated cellulose, micro-fibrillated cellulose or nano-crystalline cellulose, and wherein the Cobb Unger (120 s) value for the surface with said first and second coating is at least 0.01 g/m²and at most 0.90 g/m².