Rainbow holographic transfer paper in the printing of common problems and solutions

Rainbow holographic transfer paper as a new type of packaging material, welcomed by the packaging market, especially in the tobacco industry is widely used. Because of its brilliant colors, Rainbow Holographic Transfer Paper realizes a perfect combination of holographic technology and printing, which not only improves the packaging grade and anti-counterfeiting function of products, but also is an environmentally friendly packaging material, and its application in the packaging field is becoming increasingly widespread. .

However, due to the limitations of the existing technology of rainbow transfer paper and people's unfamiliarity with it, there are many interface problems in the printing process, and it is prone to problems of this kind or that, delaying the promotion of rainbow transfer paper in packaging printing. use. The common problems and solutions in the printing of rainbow transfer paper are discussed together with you.

First, the ink fastness problem of rainbow transfer paper printing surface

Rainbow transfer paper is coated on the printing surface in the production process, which is suitable for printing needs, but often the phenomenon of ink is not strong and easy to drop, there are mainly two cases, one is in the printing process, the rear brush ink Pull off the printed ink. The solution is to increase the ultraviolet curing intensity between the color groups or use the wet-to-wet overprinting method completely. The curing is selected to be completed at the delivery site at one time. Secondly, the ink layer on the surface of the paper after printing is not firm and easy to pull off. The solution is to use a high-toughness UV-curing ink, and the appropriate amount of ink in the ink to change the difficulty.

Second, the rainbow transfer paper is poor in softness after printing, and there is a phenomenon of popping

There are many reasons for this phenomenon. There are three general solutions. One is to make waterborne varnish before the UV printing; the other is to use two overprint methods to improve the folding resistance; third, if the printing ink does not adjust well, it will also cause color explosion. Therefore, high-toughness ink should be used as much as possible.

Third, the rainbow transfer paper has odor after printing

The method of eliminating odor is: First, lengthen the drying time after printing; Second, apply surface water-based gloss coating; Third, increase the forced ventilation of equipment and workshop.

Fourth, the rainbow transfer paper printed cracks

Because the transfer paper surface has a certain coating, the coating will produce a resultant force when it is affected by the external environment, and the coating will be damaged and cause cracks. The main solution is to maintain the appropriate ambient temperature and humidity in the printing process. Fast-drying inks reduce the penetration of solvent in the ink on the transfer paper coating.

Fifth, the rainbow transfer paper surface temperature problem

The cigarettes printed by the rainbow transfer paper are easily burned when they are packaged on the machine. The main reason is that the surface coating of the transfer paper is affected by high temperature changes. Therefore, the solution is that the cigarette factory should use the heat sealing temperature as much as possible. Lower BOPP heat seal film.

The above is the author of the rainbow transfer paper in the printing process of common problems in the shallow understanding, improper please correct me, rainbow transfer paper, whether it is its environmental protection, printing adaptability, package speed, security, aesthetics, etc. are better than Other materials, as long as printing manufacturers and material manufacturers work together, people will be familiar with their characteristics, and thus widely used, the realization of this cooperation, not only can improve the packaging and printing grade, but also contribute to China's environmental protection cause.

Source: [China Packaging Equipment Network]