Point light source reading laser encryption holographic anti-counterfeiting gasket and preparation method thereof

• Main Authors: TIAN XINGPO, JIN KAI, GONG JIANBAO, ZHANG CHUANDONG, TIAN CHENQI, ZHANG QINYONG
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2020
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BOOK COVERS; BOOKBINDING; CHEMISTRY; COLOUR PRINTING; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; DYES; FILES; HANDLING THIN OR FILAMENTARY MATERIAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LINING MACHINES; LOOSE LEAVES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MOVABLE-STRIP WRITING OR READING APPARATUS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PERFORMING OPERATIONS; POLISHES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SPECIAL PRINTED MATTER; STAMPS; STORING; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS AS ADHESIVES

The invention belongs to the technical field of anti-counterfeiting, and particularly relates to a point light source reading laser encryption holographic anti-counterfeiting gasket and a preparationmethod thereof. The laser encryption holographic anti-counterfeiting gasket includes a PET layer, an imaging layer, a laser encryption information layer, an aluminized layer, a printing layer, an upper adhesive layer, a foaming layer, a lower adhesive layer and a lower PET layer which are sequentially connected from top to bottom. The laser encryption information layer hides digital coded information. Two parameters of grating space frequency and a grating angle in a grating lattice are used to produce a laser encryption information layer molded plate, laser encryption information is copied onthe PET imaging layer to form a laser encryption information layer, when consumers use handheld point light source equipment to irradiate the front of the holographic anti-counterfeiting gasket, thehidden information is prese