Yunnan Tonghai Hanguang Packaging Industry Co., Ltd. develops laser-activated aluminum

The main contents of the laser aluminum project are to further improve the laser electro-aluminum process scheme, optimize process parameters, develop high-quality premium holographic laser electro-aluminum products that can adapt to high-speed hot stamping, fine graphic and hot stamping, and fill in the tobacco hydrous in Yunnan Province. Blanks for production of laser-activated aluminum products for paper stamping and other packaging applications.

Laser-activated aluminum is a new type of packaging bronzing substrate, which has stronger anti-counterfeiting performance than ordinary aluminum. It can add text patterns as required, with a strong sense of three-dimensionality and realism. Laser-activated aluminum has gold, silver, red, green, basket, black and other colors and a variety of patterns for hot stamping copper paper, cork paper, ink paper, plastic products, wood, leather, silk, linoleum, etc. It has the advantages of good hotness, strong gloss, colorful, anti-friction, good cutting and so on.

Laser aluminum can be widely used in packaging and decoration materials, and it is a product with high added value. Its quality assurance needs to meet the following conditions: First, the equipment is a high-precision automated control. Second, the film materials used in production have better stability performance. Third, in the production process, the process (raw material formula, process parameters, etc.) and the control of the production environment temperature and humidity are strict, and the product testing means are complete and precise.

At present, the vast majority of domestic aluminum products are ordinary aluminum, only hot stamping of general paper and ink, and most of them are manually or semi-automatically pressed flat sheet hot stamping methods. The hot stamping speed is slow and the work efficiency is low. It is difficult to meet High-speed, high-precision flat-pressing and round-pressing hot stamping methods for imported equipment. There are three types of holographic hot stamping: the ordinary version of hologram hot stamping, special version of hologram hot stamping, special version of hologram positioning hot. Holographic positioning hot technology is very difficult, not only requires the printing plant equipped with high-performance, high-precision positioning of hot equipment, but also requires a high-quality special positioning hot stamping of aluminum, the production process must also be strictly controlled in order to produce qualified Cigarette products. Since the positioning stamping mark has a high anti-counterfeiting performance, it is used in occasions such as banknotes and important documents. The general gold and silver anodized aluminum produced by Yunnan Tonghai Hanguang Packaging Industry Co., Ltd. and the holographic primed laser aluminized galvanized aluminum produced by this project are mainly used to support the Hongta Group's cigarette pack products. The ordinary anodized aluminum products used in the project are used in high-end products, namely wine boxes, For tea boxes, foods, medicines, and other packaging, the market's potential demand is about 1 million marks per year.

Laser aluminum is the product of common aluminum production technology and laser hologram mold technology, chemical industry technology. This project is based on the principle of laser rainbow holography, using argon ion or helium cadmium laser as the light source, using holographic methods to create a high-brightness rainbow hologram master on photoresist, and then using electroforming technology to master the master The holographic pattern is turned onto a metal nickel plate, and then the rainbow pattern is copied to a polyester film, a polyvinyl chloride film or a paper by a hot pressing technique. The brilliant color and the realistic three-dimensional effect make the products very versatile. Strong artistic appeal and anti-counterfeiting features.

Yunnan Tonghai Hanguang Packaging Industry Co., Ltd. has laid a foundation for industrialized research and development of the project based on the experience of ordinary anodized aluminum production. The difference between the production of ordinary anodized aluminum and laser aluminized aluminum is mainly the difference in the laser molding method. At the same time, there is a big difference between the adhesive formulation and the technology, plus the difference in transferability and transfer method. The transfer performance needs to be determined based on many factors such as the actual performance of the material to be heated, the area size, the transfer method, the transfer temperature, and the speed. Therefore, the focus of laser electro-aluminum production process control is to control its transfer performance. The difficulty in technology development will be the selection and control of the laser molding process.

At present, Yunnan Tonghai Hanguang Packaging Industry Co., Ltd. has produced laser aluminum foil that has successfully passed tests, and can basically meet the high-speed hot stamping of automatic imported equipment, fine stamping of tipping paper, and can also meet the speed of 70m/min- 80m/min, hot stamping temperature 200°C-230°C normal hot stamping.

Source of information: pack.cn