SPECIAL POLYMER LAYERS FOR FASTER LAMINABILITY OF MULTILAYER STRUCTURES

• Main Authors: Pudleiner, Heinz, Janke, Stefan, Hovestadt, Wieland, Tziovaras, Georgios, Planken, Kira
• Format: Patent
• Language: English
• Published: 19.09.2024
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; PERFORMING OPERATIONS; POLISHES; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

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 360:2004 (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.