The general process of refractive index technology in printing factories [Buke printing]

The general process of refractive index technology in printing factories [Buke printing]

The general process of refractive molding (printing) technology is: first, according to the design needs, select regular geometric lines and texture patterns to make refractive patterns, usually a combination of straight lines or curves, and it is not suitable to choose thicker or thinner lines (generally speaking, the ratio of solid lines to blank is 1:1 for better effect, practice has proved that block patterns or gaps that are too large or too small, lack regular distribution patterns, and the refractive effect of the product is not good, or even no refractive effect, should not be used as refractive patterns). Secondly, an imprint plate should be made (copper plate should be selected as the material for imprint plate, as the fineness and printing resistance of copper plate are much better than zinc plate). According to the size of the light pattern area and the required unit pressure, an appropriate die-cutting and indentation machine or a printing machine with a certain pressure (such as circular or flat printing machine) should be selected for cold pressing. Finally, a refractive technology product is made from this. Refractive molding is generally carried out in two steps, that is, printing colored patterns first, and then pressing line patterns. The printing of colored patterns is the same as conventional printing, but when choosing ink, attention should be paid to using oil with good transparency, high brightness, and fast drying. If so, it is necessary to refract it. When pressing, the product should be folded and pressed. Anhuang is good (the dressing method is used in conjunction with the die-cutting and pressing of Getong, and the material is generally transferred into a hard packaging material during use, with greater pressure than traditional instant brushing), Then, during the transverse compression process, attention should be paid to the control of the registration accuracy and timely adjustment of the surface. The quality of the image compression depends on the size and uniformity of the pressure of the compression equipment. In the refractive compression process, the selection of the bearing material is not important, as it plays a crucial role in the refractive effect of the printed product. It is used for cutting and pressing machines with high track pressure. Practice has shown that the better the metal gloss and smoothness of the selected printing material, the greater the reflection coefficient of light, and the better the refractive effect. Generally speaking, large-area silver and gold printed products can produce refractive effects, while using smooth textured all belong to the card group and electrochemical printing. Aluminum materials undergo refractive processing, resulting in better refractive effects. In practical production, paper and board are often used as substrates, Surface printed aluminum foil or a composite layer of aluminum foil is used as the printing material. It is recommended to choose paper and cardboard with internal texture inspection (good tightness and properties) and high surface smoothness to facilitate the indentation of fine and neat contour lines on the metal film surface, making the lines smooth, uniform, without broken points, and with good folding effect

The general process of refractive index technology in printing factories [Buke printing]