First, the application of UV coating technology
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After the UV coating treatment of paper packaging products, the appearance effect can be improved, the printing quality is thick and full, the luster is full and nourishing, the decorating effect of the paper products is improved, and the folding resistance and chemical resistance are significantly improved, and the use performance thereof is improved. , To reduce the loss of products during transportation and storage. For products with high moisture-proof requirements (such as electrical appliances, etc.), their paper-based packaging products are treated with UV coating to increase the moisture resistance of the package.
UV glazing has developed rapidly in recent years, and its proportion in the packaging and printing industry is gradually increasing, but at the same time there are still many problems to be solved. The first is security issues. At present, reactive diluents used in UV varnish have certain volatility or irritation and are still polluted to the environment. The water-based UV varnish currently being developed is an ideal environment-friendly product because it replaces the active diluent with a thickener, which solves the problems of volatility and irritation.
Followed by the odor problem. Now it is gradually developing towards low odor. At present, UV-glazed packaging products have not been fully recognized by the international food and drug companies and cannot be directly contacted with food. Therefore, it is necessary to improve the working conditions and environment, improve the drying effect, and obtain a complete cure, thereby reducing the odor.
Again, there is a problem of adhesion on oxidative polymerization inks. There is not only the problem of odor, low gloss, but also difficulty in adhesive attachment. Double glossing is often used to improve the quality of UV coatings, but it also increases costs. Therefore, the adaptability of UV light oil and ink needs to be improved.
The last is to reduce the cost, although the current cost has dropped a lot, compared with the cost of BOPP composite film composite cheaper. However, in China, there are many types of UV coatings and their properties are different. So the price difference is greater. In general, the cost is still too high, and it is necessary to further reduce the cost of lacquer, coating costs, and equipment operating costs.