Application and classification of laser holographic hot stamping technology in printing factories [Buke printing]

Application and classification of laser holographic hot stamping technology in printing factories [Buke printing]

Laser holographic hot stamping technology can not only increase the anti-counterfeiting function of packaging, but also improve the decoration effect of packaging. It is one of the popular printing and packaging anti-counterfeiting technologies in the world today, mainly used for anti-counterfeiting of various tickets, credit cards, passports, banknotes, trademarks, tobacco and alcohol packaging, and important printed materials.

The basic principle of laser holographic hot stamping technology is to heat and melt the hot melt adhesive layer and separation layer on the laser holographic hot stamping material (laser holographic electrochemical aluminum box) through a heated hot stamping die on the hot stamping equipment. Under a certain pressure, the holographic grating stripes on the information layer of the printing material are fused with PET The separation of the substrate allows the aluminum foil information layer to bond with the hot stamping surface and integrate into one, achieving a perfect combination. Laser holographic hot stamping technology is the main method for mass application of laser holograms, which has wide applications in security and anti-counterfeiting printing and packaging printing. The light hologram printed on the substrate is very thin and integrated with the substrate, while also reflecting the printed pattern and color on it, which can achieve excellent visual effects. While enhancing the product decoration effect, it is required that the imaging layer of the laser holographic hot stamping aluminum foil can ensure that the high-resolution laser hologram is not lost to ensure that the hologram still has a high diffraction rate after hot stamping. According to the characteristics of holographic hot stamping identification, it is commonly used. Laser holographic hot stamping can be divided into: continuous holographic identification hot stamping Independent pattern holographic identification hot stamping and holographic positioning hot stamping

(1) Continuous holographic marking hot stamping is a replacement product of ordinary laser holographic hot stamping technology (which is currently mostly used for non dry adhesive labels). Due to the regular continuous arrangement of holographic markings on electroplated aluminum, several characters or patterns are hot stamped as a whole onto the final product during each hot stamping, and there is no high requirement for hot stamping accuracy. Generally, hot stamping equipment can be used to complete it, and general flat press hot stamping machines, circular press hot stamping machines, and circular press hot stamping machines can be selected

(2) Independent pattern holographic identification hot stamping. In order to achieve better anti-counterfeiting effect in holographic identification hot stamping, most high-end products use independent pattern holographic identification hot stamping, which means that the holographic identification on the electrified aluminum is made into independent trademark patterns, and there are alignment marks next to each pattern. This puts high demands on the functionality and accuracy of the hot stamping equipment, requiring both a positioning recognition system and a positioning hot stamping accuracy of within ± 0.5mm. Otherwise, incomplete or offset trademark pattern hot stamping may occur, thus failing to achieve anti-counterfeiting and increase product added value.

(3) Holographic positioning hot stamping. On the hot stamping equipment, the hologram of a specific part of the holographic anti-counterfeiting hot stamping electroplated aluminum is accurately hot stamped onto a specific position on the hot stamping surface through photoelectric recognition. The holographic positioning hot stamping technology is very difficult, requiring not only high-performance and high-precision specialized positioning hot stamping equipment for printing, but also high-quality specialized positioning hot stamping electrochemical aluminum and alloy. The production process also needs to be strictly controlled in order to produce qualified products with good anti-counterfeiting functions. The requirements for hot stamping technology are very high, and the anti-counterfeiting strength is also very good. It is necessary to ensure that the hologram is accurately hot stamped onto the designated position of the hot stamping surface with high production efficiency, and the positioning accuracy requirement is not less than ± 0.25mm.

Application and classification of laser holographic hot stamping technology in printing factories [Buke printing]