The use of UV transfer technology through the blanket in the paper surface coated with a layer of UV oil, and then through the drum to the optical film or special pattern transferred to the printed paper above. So that the surface of the paper to produce light beam effect of laser paper. This technology is used for cigarettes, jugs, cosmetics, pharmaceuticals and the like. In the current industry is a new anti-counterfeiting technology.

Gold and silver cardboard principle

Gold and silver cardboard principle of the five elements, namely, screen printing plate, scraping scraper, ink, printing Taiwan and substrates.

The basic principle of screen printing is: the use of screen printing plate graphic part of the mesh through the ink, non-graphic part of the basic principle of ink through the printing. When printing, pour ink into one end of the screen printing plate, apply a certain pressure to the ink area on the screen printing plate with the scraping blade, and move toward the other end of the screen printing plate. The ink is squeezed into the substrate by the scraper in the mesh of the graphic portion. Due to the sticky role of the ink leaving the imprint fixed within a certain range, the printing process scraper and the screen printing plate and the substrate was always in line, the contact line with the scraper movement and move, because the screen printing plate and the substrate Between the screen to maintain a certain gap, making the screen printing plate through its own tension to produce the reaction force on the scraper, the reaction force called the resilience. Due to the role of resilience, so that screen printing plate and the substrate was only mobile line contact, and other parts of the screen printing plate and the release of the state. So that ink and wire mesh breakage movement, to ensure the printing size accuracy and to avoid rubbing the substrate. When the scraper scratches the entire panel and lifts it, the screen plate is lifted and the ink is lighted back to its original position.

The use of gold and silver cardboard

Mainly widely used in color packaging, apply to cigarettes, alcohol, food, cosmetics, toothpaste box, medicine and gift packaging industry boxes, box printing and packaging.

Gold and silver cardboard technology often encounter the phenomenon and solutions

Ink adhesion

First look at your gold and silver cardboard surface has done corona treatment, is the electrostatic treatment. If the instrument is not tested for this item, it may be required by the supplier to provide this effect on the surface tension of the substrate. Because only the appropriate surface tension value is a good prerequisite for ink adhesion.

Second, the ink curing strength is not enough, the color of the ink because of the light absorption is better, so if the color of the dark print content, remember that can not open too fast, the ink is not fully cured, then affect the ink attachment effect.

Third, ask your ink supplier. Because you do not know how the quality of your ink, so you want to consult with your ink supplier, you can ask them in the ink adhesion enhancer content increase, or add a special promotion of curing chemicals, so as to promote Physical curing effect, the specific name I do not know, only know that he is to promote the curing just fine.

Fourth, make sure your UV lamp is still under effective power. Normal domestic UV lamp life of about 600 hours of equal power, after the care should be. Small Japanese probably better can reach 1000 ~ 1200 hours.

If it is varnish spray type gold and silver card, there is no basic problem of ink attached to the bad, and even can be directly dry ink to the more real, but because of this cardboard production and inventory costs, few factories are willing to use (smoke Bag / wine package and other high-end products, except), so now most of the use of gold and silver cardboard for some of the film as the medium of the day after the composite material, like the coating process, how much complex number. In addition, the electrostatic treatment is not in addition to static electricity, but to stimulate the surface activity of this material, so as to better ink to play a foundation, especially has been stored for some time material.