EP 4370333 A1 20240522 - SPECIAL POLYMER LAYERS FOR FASTER LAMINABILITY OF MULTILAYER STRUCTURES
Title (en)
SPECIAL POLYMER LAYERS FOR FASTER LAMINABILITY OF MULTILAYER STRUCTURES
Title (de)
SPEZIELLE POLYMERSCHICHTEN ZUR SCHNELLEREN LAMINIERBARKEIT VON MEHRSCHICHTAUFBAUTEN
Title (fr)
COUCHES POLYMÈRES SPÉCIALES PERMETTANT LA STRATIFICATION PLUS RAPIDE DE STRUCTURES MULTICOUCHES
Publication
Application
Priority
- EP 21185504 A 20210714
- EP 2022069277 W 20220711
Abstract (en)
[origin: WO2023285356A1] The invention relates to a multilayer structure (MS) comprising (SI) at least one first polymer layer (SI) comprising ≥ 95% by weight, preferably ≥ 98% by weight, particularly preferably ≥ 99% by weight, based on the total weight of the polymer layer (SI), of a polymer (PI) selected from the group consisting of a polycarbonate, a co-polycarbonate or mixtures thereof having a Vicat softening temperature ≥ 149°C, preferably ≥ 160°C, further preferably ≥ 170°C; more preferably ≥180°C, determined according to ISO 306:2004 (50N; 50°/h); (S2) at least one further polymer layer (S2) having a Vicat softening temperature < 149°C, preferably ≤ 140°C, more preferably ≤ 130°C, determined according to ISO 306:2004 (50N; 50°/h), preferably in a range from 120°C to 148°C; (S3) optionally at least one third polymer layer (S3) having a Vicat softening temperature ≥ 149°C, preferably ≥ 160°C, further preferably ≥ 170°C; more preferably ≥ 180°C, determined according to ISO 306:2004 (50N; 50°/h). The invention further relates to a process for producing a multilayer structure (MS) and to a security document comprising such a multilayer structure according to the invention.
IPC 8 full level
B32B 27/08 (2006.01); B32B 27/36 (2006.01)
CPC (source: EP)
B32B 27/08 (2013.01); B32B 27/365 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/244 (2013.01); B32B 2307/30 (2013.01); B32B 2369/00 (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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4119344 A1 20230118; CN 117677499 A 20240308; EP 4370333 A1 20240522; WO 2023285356 A1 20230119
DOCDB simple family (application)
EP 21185504 A 20210714; CN 202280049646 A 20220711; EP 2022069277 W 20220711; EP 22747684 A 20220711