Corrugated carton should pay attention to the problem in printing one: ink color should be eye-catching
Since the color of the corrugated cardboard itself is quite dark, you must consider the use of inks with large color saturation and strong coloring power (such as big red) when choosing the printed color, otherwise the printed color will be very different from the desired color Big gap.
Corrugated cardboard box should pay attention to the problem two: avoid printing small text
As a corrugated box printing, the size of the font should be determined from the perspective of the effect of publicizing the product. Characters less than 2cm in size are almost indistinguishable at a distance of more than 5m, so that the meaning of promoting and selling products is lost.
Corrugated cardboard box should pay attention to the problem three: avoid full-page printing
When the corrugated cardboard box is full or printed around, in addition to the effect of the embossing roller on the corrugated cardboard, the ink has a wetting effect on the paper surface, which will reduce the compressive strength of the corrugated cardboard box. Therefore, the simpler the printed graphics on the corrugated box, the better, and try to avoid printing graphics on the entire surface of the box as much as possible, not to mention full color printing.
Corrugated cardboard box should pay attention to the fourth problem in printing: avoid banding (same as the mechanical direction of corrugated cardboard) printing
Due to lack of knowledge of printing process, some decoration designers have some horizontal gradient lines in the carton printing patterns. When printing, the printing pressure will crush the corrugation. Stress concentration will occur in this area of ​​the carton and is therefore the easiest to break.
Corrugated cardboard box should pay attention to the problem in printing five: try to reduce the printing pressure
In order to ensure the printing quality of the carton and reduce the impact on the strength of the corrugated carton, the printing pressure should be as small as possible, and the ink used should be quick-drying ink. Secondly, the distance between the printing surface and the horizontal indentation line should be kept at least 15mm, because the corrugated cardboard is not fully accepted by the pressed portion of the crimping disc of the laminating machine, otherwise it will affect the printing effect.
Corrugated cardboard box should pay attention to the problem of six: keep the ink viscosity stable
Ink viscosity is the main index that needs to be controlled in corrugated cardboard printing. It is one of the main factors that affect the color condition of printing. Due to the evaporation of the ink solvent in the printing process, the base viscosity will increase. In order to maintain the stability of the ink viscosity, the ink stabilizer should be added every half an hour to one hour, and the addition amount is 1% to 2%.
Corrugated carton should pay attention to the problem in printing seven: keep the paper feeding state stable
In addition to the stable running speed of the printing press, the manual paper feed point should be fixed. For the cardboard with poor flatness, it should be properly handled, such as reversing along one side (or both sides) of the horizontal pressure line of the cardboard; the gap between the paper guides by hand feeding, etc. should be consistent, these are related to keeping the cardboard running stable The important link is also an important method of the "run version" phenomenon. Keep the printing equipment in good condition. It should be emphasized here that keeping the anilox roller and the printing plate clean and clean is directly related to the printing effect. The anilox roller is related to the ink transfer performance, and the printing plate is related to the clarity of the printed text and patterns.
Corrugated cardboard box should pay attention to the problem of eight: keep the ink transfer volume stable
For this reason, the printing speed must be kept balanced and stable. Because the printing speed is related to the state of ink transfer, it must be operated in a balanced manner, not fast or slow. It is also necessary to keep the paper balance evenly, and the phenomenon of interleaving paper feeding cannot occur. Only in this way can the ink printing machine have a stable ink transfer state, which plays an important role in maintaining the stability of the ink printing color.
Corrugated cardboard box should pay attention to the problem nine: try to reduce the number of overprints
The more overprinting times, the more serious the compressive strength of corrugated boxes decreases.
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