EP 4127315 A1 20230208 - MULTI-LAYER PRINTING SUBSTRATE WITH HIDDEN INFORMATION
Title (en)
MULTI-LAYER PRINTING SUBSTRATE WITH HIDDEN INFORMATION
Title (de)
MEHRLAGIGES DRUCKSUBSTRAT MIT VERBORGENER INFORMATION
Title (fr)
SUBSTRAT D'IMPRESSION MULTICOUCHE À INFORMATIONS CACHÉES
Publication
Application
Priority
- EP 20167810 A 20200402
- EP 2021057682 W 20210325
Abstract (en)
[origin: WO2021197993A1] The invention relates to a multi-layer substrate (9), in particular a printing substrate in the form of security paper, having a first paper ply (1) and a second paper ply (2), and a plastic ply (3) made of at least one thermoplastic polymer material arranged between the paper layers (1, 2) and directly connected on both sides to the paper layers (1, 2), wherein a strip-shaped tear-off film (5) is embedded between the paper layers (1, 2) on the inner side of the second paper layer (2) and at least partially embedded into the plastic layer (3), characterised in that hidden information (6) is arranged on the inner side of the first paper ply (1) and, when viewed perpendicularly to and from the side of the second paper ply (2), is covered by the strip-shaped tear-off film (5) or is arranged on the surface of the strip-shaped tear-off film (5) facing the first paper ply (1), wherein the hidden information (6) can be exposed by the strip-shaped tear-off film (5) together with a strip (11) of the second paper ply (2) being irreversibly torn off the multi-layer substrate (9).
IPC 8 full level
D21H 21/42 (2006.01); A63F 3/06 (2006.01); B32B 3/08 (2006.01); B32B 3/26 (2006.01); B32B 27/10 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 29/00 (2006.01); B42D 15/02 (2006.01); D21H 21/44 (2006.01); D21H 27/36 (2006.01)
CPC (source: EP US)
B26F 1/38 (2013.01 - US); B32B 3/08 (2013.01 - EP); B32B 3/266 (2013.01 - EP US); B32B 27/08 (2013.01 - US); B32B 27/10 (2013.01 - EP); B32B 27/18 (2013.01 - US); B32B 27/32 (2013.01 - EP); B32B 27/36 (2013.01 - EP); B32B 29/00 (2013.01 - EP); B42D 25/305 (2014.10 - EP); B42D 25/328 (2014.10 - EP US); B42D 25/351 (2014.10 - EP US); B42D 25/355 (2014.10 - EP); B42D 25/369 (2014.10 - EP); B42D 25/40 (2014.10 - EP); B42D 25/46 (2014.10 - US); D21H 21/42 (2013.01 - EP US); D21H 21/44 (2013.01 - EP US); D21H 23/46 (2013.01 - US); D21H 27/36 (2013.01 - EP US); A63F 3/069 (2013.01 - EP US); B26F 1/38 (2013.01 - EP); B32B 2250/44 (2013.01 - EP); B32B 2260/028 (2013.01 - US); B32B 2260/046 (2013.01 - US); B32B 2307/718 (2013.01 - US); B32B 2519/00 (2013.01 - EP); B32B 2554/00 (2013.01 - EP US); B41M 3/14 (2013.01 - EP US); B42D 25/305 (2014.10 - US); B42D 25/355 (2014.10 - US); B42D 25/369 (2014.10 - US); B42D 25/378 (2014.10 - US)
Citation (search report)
See references of WO 2021197993A1
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)
WO 2021197993 A1 20211007; EP 4127315 A1 20230208; US 2023151551 A1 20230518
DOCDB simple family (application)
EP 2021057682 W 20210325; EP 21713685 A 20210325; US 202117916693 A 20210325