What is the holographic hot stamping process and what are its applications?

What is the holographic hot stamping process and what are its applications?

In the post-processing process of cigarette pack printing, many products are inseparable from the combination of holographic hot stamping and text embossing hot stamping, and the distance between holographic patterns and embossing hot stamping text is relatively close. Whether it is holographic hot stamping or text embossing hot stamping (with embossed metal effect), its purpose is mainly to enhance the product's anti-counterfeiting function and text decoration function.

What is holographic hot stamping?

Electrochemical aluminum foil printing (also known as hot stamping), due to its unique advantages, is more and more widely used in packaging and decoration printing. There are two kinds of ordinary electrochemical aluminum foil printing, hot stamping and cold stamping, but they generally only play the role of finishing and decorating printed products, making the products have the effect of resplendent and icing on the cake. In recent years, with the development of high-tech and anti-counterfeiting technology, a new technology mainly used for packaging and printing of securities and commodities-holographic positioning hot stamping technology has attracted more and more attention. It not only provides commodity packaging It is decorated and has a good anti-counterfeiting effect. Since holographic hot stamping is a high-tech, it involves holographic hot stamping foil materials, hot stamping machinery and positioning devices, so it is necessary to fully understand and master the characteristics of these materials and equipment In order to work better.

Generally mentioned holographic hot stamping includes positioning hot stamping and non-positioning hot stamping. The positioning hot stamping pattern is uniform and has anti-counterfeiting function; the non-positioning hot stamping pattern is distributed regularly, and the anti-counterfeiting effect is not good. This technology is mainly for positioning hot stamping.

Holographic hot stamping process application

The holographic hot stamping process applies holograms in large quantities. The holograms stamped on the substrate are very thin, integrated with the substrate, and reflect the printed patterns and colors on the substrate, so that good visual effects can be obtained. / According to the hot stamping process s difference. Holographic hot stamping can be roughly divided into three types, namely low-speed holographic hot stamping, fast chaotic holographic hot stamping and high-speed positioning holographic hot stamping. Among them, the high-speed positioning holographic hot stamping technology has the highest requirements and the greatest anti-counterfeiting strength. It is necessary to ensure that the hologram is completely and accurately hot stamped on the designated position under high production efficiency, and the positioning accuracy is not low.

Within ±0.25mm. Holographic positioning hot stamping adopts corresponding anti-counterfeiting patterns and special technology. It uses holographic positioning probes to accurately control anodized aluminum, and the hot stamping quality is high, which has been recognized worldwide.

Characteristics and principles of holographic hot stamping

The holographic hot stamping technology is a new technology that has been applied soon. It integrates the laser holographic image anti-counterfeiting technology with good anti-counterfeiting effect and the hot stamping decoration technology, so that the product can increase the anti-counterfeiting performance while improving the decoration. The laser hologram is made according to the principle of laser interference and the method of spatial frequency coding. Laser holograms have been used in the field of anti-counterfeiting since the 1980s because of their impressive colors, obvious layers, vivid images, variable optical transformation effects, and high information and technology content. The latest OVD technology is clearly different from the widely used HOLOGRAM hologram, and some holograms have machine recognition functions. The mechanism of holographic hot stamping is to heat and melt the hot melt adhesive layer and separation layer on the holographic hot stamping material through the heated hot stamping die on the hot stamping equipment, and under a certain pressure, the holographic grating of the information layer of the hot stamping material The stripes are separated from the PET substrate, so that the aluminum foil information layer and the ironing surface are bonded and integrated to achieve a perfect combination.

(Partial holographic positioning and hot stamping of semi-finished products)

The main technology of holographic hot stamping is in the holographic positioning hot stamping technology. The positioning technology is mainly to eliminate the gradual accumulation of accuracy errors in the hot stamping process. The independent pattern holographic hot stamping foil needs to use the positioning cursor to correct the error in the holographic pattern in time. . The holographic pattern on each hot stamping foil needs to have a matching square cursor, the holographic pattern is consistent with the center line of the cursor, and the distance is maintained at a constant relative position of at least 3 mm. To ensure the accuracy of the cursor, the edge of the cursor should be very straight, with sharp and consistent optical characteristics.

Currently, there are three types of technologies used in positioning systems: basic type, in-position type with hot stamping plate and intelligent type.

(1) Basic positioning system

It is the simplest kind of positioning hot stamping technology. The detector is at a certain distance from the hot stamping plate, and the recognized pattern is not the one being hot stamped. Therefore, this positioning technology must require that the spacing between all holograms be exactly the same, otherwise, any error will be reflected as an error in positioning and hot stamping. 

(2) Co-positioning technology with hot stamping plate

This positioning technology has the detector next to the hot stamping plate, and the positioning pattern is the same as the hot stamping pattern. It is the most accurate positioning technology, especially suitable for small flat-pressing hot stamping machines.

(3) Intelligent positioning technology

Intelligent positioning technology. Although the position of the detector is at a certain distance from the hot stamping plate, it is controlled by a microprocessor to keep track of the cursor spacing, and the hot stamping foil is pulled to change the position of the pattern, which improves the positioning accuracy. This positioning method is more sensitive to the tension control of the hot stamping foil.