Point light source reading laser encryption plastic film hot stamping foil and preparation method thereof

• Main Authors: TIAN XUEFENG, GONG JIANBAO, WAN JIE, TIAN CHENQI, ZHANG QINYONG, LI JIANGTONG
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2020
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention belongs to the field of anti-counterfeiting technology, and particularly relates to a point light source reading laser encryption plastic film hot stamping foil and a preparation methodthereof. The laser encryption plastic film hot stamping foil comprises a PET layer, a release layer, an imaging layer, a laser encryption information layer, an aluminum plating layer, a printing layerand a back glue layer which are sequentially connected from top to bottom, wherein digital coding information is hidden in the laser encryption information layer. According to the foil, a laser encryption information layer molded plate is manufactured through grating space frequency and a grating angle in a grating crystal lattice, laser encryption information is copied to the upper surface of the PET imaging layer to form the laser encryption information layer, a consumer uses a hand-held point light source device to irradiate the front surface of hot stamping alumite, hidden information canbe presented, the authenti