Overview of nanocrystal laser anti-counterfeiting labels

Overview of nanocrystal laser anti-counterfeiting labels

Now on the marketLaser security labelThere are many different types of materials used, and the anti-counterfeiting technologies used are also very different. Currently, the more popular anti-counterfeiting laser labels use laser technology. With the widespread use of two-dimensional codes, the utilization rate of two-dimensional code anti-counterfeiting labels has also become much higher. These anti-counterfeiting labels have a layer of anti-counterfeiting label film. Today we are discussing the application of nanocrystalline label film in laser anti-counterfeiting labels.

Nanocrystal is a relatively new material in laser anti-counterfeiting labels. Liquid crystal is an intermediate state between liquid and crystal. It not only has the fluidity of liquid, but also has the unique optical anisotropy of crystal. At the same time, it is very sensitive to electromagnetic fields and has great practical value. Using it together with anti-counterfeiting laser markers can exert a greater anti-counterfeiting effect. According to the spatial arrangement and ordering of liquid crystal molecules, liquid crystal molecules can be divided into three types: near-crystalline, nematic and cholesteric. Nano cellulose and its derivatives have semi-rigid macromolecular chains, and can form cholesteric liquid crystals when dissolved in some organic or inorganic solvents. The two-dimensional code anti-counterfeiting label uses the spiral structure of cellulose and liquid crystal to allow the anti-counterfeiting film to selectively reflect broad light waves. Different concentration films and different parts of the film have different color patterns, making the color pattern of each film unique, which meets the requirements of modern laser anti-counterfeiting label anti-counterfeiting technology.

Laser anti-counterfeiting labels use the optical characteristics of nanocrystals to produce label films of different thicknesses, and the patterns viewed from different directions are different. It can be said that after the anti-counterfeiting laser label is added with this layer of film, the color of the label will be more brilliant and colorful, which can not only provide anti-counterfeiting technology for the product, but also make it more beautiful. And the two-dimensional code anti-counterfeiting label plus this protective film, the anti-counterfeiting effect will be more guaranteed. The thin film formed by this nanocrystal can also be combined with database technology and radio frequency scanning technology to produce a variety of laser anti-counterfeiting labels for use on anti-counterfeiting labels in different industries.