EP 4010529 A1 20220615 - SECURITY PAPER
Title (en)
SECURITY PAPER
Title (de)
SICHERHEITSPAPIER
Title (fr)
PAPIER DE SÉCURITÉ
Publication
Application
Priority
- FR 1909003 A 20190806
- EP 2020071444 W 20200729
Abstract (en)
[origin: WO2021023601A1] The invention mainly concerns a fibrous substrate obtained by a wet process, resistant to crumpling and to dirt, in particular of the banknote type, characterised in that it comprises, by weight, at least: - 40% to 96% by dry weight of fibres, in particular cellulose fibres, relative to the dry weight of the substrate, - 1% to 20% by dry weight relative to the dry weight of fibres, of at least one anionic polymer having a glass transition temperature higher than -40°C, and being present in a precipitated form on the surface of the fibres, - 0.5% to 5% by dry weight of at least one cationic precipitation agent, relative to the dry weight of fibres, and - 0.001% to 1% by dry weight of at least one biocidal agent. It also concerns the method for preparing same.
IPC 8 full level
D21H 17/34 (2006.01); D21H 17/37 (2006.01); D21H 21/18 (2006.01); D21H 21/36 (2006.01)
CPC (source: EP)
D21H 17/34 (2013.01); D21H 17/375 (2013.01); D21H 21/18 (2013.01); D21H 21/36 (2013.01)
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
DOCDB simple family (publication)
WO 2021023601 A1 20210211; BR 112022002208 A2 20220607; EP 4010529 A1 20220615; EP 4010529 B1 20240327; EP 4010529 C0 20240327; FR 3099768 A1 20210212; FR 3099768 B1 20210806
DOCDB simple family (application)
EP 2020071444 W 20200729; BR 112022002208 A 20200729; EP 20751497 A 20200729; FR 1909003 A 20190806