EP 4294979 A1 20231227 - IMPROVED WRAPPING PAPER HAVING A LOW DIFFUSION CAPACITY
Title (en)
IMPROVED WRAPPING PAPER HAVING A LOW DIFFUSION CAPACITY
Title (de)
VERBESSERTES UMHÜLLUNGSPAPIER MIT NIEDRIGER DIFFUSIONSKAPAZITÄT
Title (fr)
PAPIER D'ENROBAGE AMÉLIORÉ À FAIBLE CAPACITÉ DE DIFFUSION
Publication
Application
Priority
- DE 102021104160 A 20210222
- EP 2022053727 W 20220216
Abstract (en)
[origin: WO2022175292A1] The invention relates to a wrapping paper for a smoking article, said wrapping paper comprising long-fibre pulp, short-fibre pulp, and inorganic filler, wherein: at least a portion of the long-fibre pulp is ground and the ground long-fibre pulp constitutes at least 15% and at most 70% of the mass of the wrapping paper; at least a portion of the short-fibre pulp is ground and the ground short-fibre pulp constitutes at least 5% and at most 80% of the mass of the wrapping paper, and the ground short-fibre pulp has a freeness value of at least 20 °SR and at most 60 °SR; the short-fibre pulp as a whole constitutes at least 10% and at most 80% of the mass of the wrapping paper; at least 5% and at most 45% of the mass of the wrapping paper is constituted by one or more inorganic fillers; the mass per unit area of the wrapping paper is at least 15 g/m2 and at most 45 g/m2; the diffusion capacity of the wrapping paper is at least 0.05 cm/s and at most 0.5 cm/s; and the standard deviation of the diffusion capacity of the wrapping paper is at most 0.05 cm/s. The invention also relates to an associated manufacturing method and to a smoking article making use of said wrapping paper.
IPC 8 full level
D21D 1/20 (2006.01); A24D 1/02 (2006.01); D21D 99/00 (2006.01); D21F 11/00 (2006.01); D21H 17/00 (2006.01); D21H 27/00 (2006.01)
CPC (source: EP US)
A24D 1/02 (2013.01 - EP US); A24D 1/20 (2020.01 - US); D21D 1/20 (2013.01 - EP US); D21D 99/00 (2013.01 - EP); D21F 11/00 (2013.01 - EP); D21G 9/0018 (2013.01 - US); D21H 15/06 (2013.01 - US); D21H 17/25 (2013.01 - US); D21H 17/28 (2013.01 - US); D21H 17/30 (2013.01 - US); D21H 17/74 (2013.01 - US); D21H 27/00 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021104160 A1 20220825; CN 117062950 A 20231114; EP 4294979 A1 20231227; US 2024122231 A1 20240418; WO 2022175292 A1 20220825
DOCDB simple family (application)
DE 102021104160 A 20210222; CN 202280016118 A 20220216; EP 2022053727 W 20220216; EP 22706041 A 20220216; US 202218276906 A 20220216