Corrugated boxes should pay attention to the first problem in printing: the ink color should be eye-catching
Because the color of the corrugated cardboard itself is quite dark, so in the choice of printing color must be taken into account as far as possible to choose the color saturation, strong coloring ink (such as red), otherwise the printed color and the desired color will have a big gap。
Corrugated boxes in the printing should pay attention to the second problem: avoid printing small words
As a corrugated box printing, from the effect of promoting the product, the size of its font should be determined。The text below the size of 2cm is generally almost invisible at a distance of more than 5m, so it has lost the significance of promoting and selling goods。
Corrugated boxes in the printing should pay attention to the problem three: to avoid full printing
When the corrugated box is full or printed around, in addition to the effect of the embossing roller on the corrugated board, the ink has an infiltration effect on the paper surface, which will reduce the compressive strength of the corrugated box。Therefore, the simpler the printing of corrugated box graphics, the better, and as far as possible to avoid printing graphics everywhere on the entire surface of the box, let alone full plate printing color。
The fourth problem that should be paid attention to in the printing of corrugated boxes: Avoid ribbon (the same mechanical direction as corrugated cardboard) printing
Some decoration designers due to the lack of printing process knowledge, the design of the carton printing pattern has some horizontal gradient lines。When printing, the printing pressure will crush the corrugated。This area of the carton will have a stress concentration, so it is most easily broken。
Corrugated boxes in printing should pay attention to the problem five: minimize 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 fast drying oil ink as much as possible。Secondly, the distance between the printing surface and the horizontal indentation line should be more than 15mm, because the low pressure part of the corrugated cardboard can not fully accept the ink, otherwise it will affect the printing effect。
Corrugated box in the printing should pay attention to the problem six: keep the viscosity of ink stable
Ink viscosity is the main index that needs to be controlled in corrugated board printing, and it is one of the main factors that affect the printing color。Due to the volatilization of ink solvent in the printing process, the base viscosity will increase, in order to maintain the stability of ink viscosity, the ink stabilizer should be added every half an hour to 1 hour, and the amount of addition is 1% to 2%。
Corrugated box in the printing should pay attention to the problem seven: keep the paper feeding state stable
In addition to the stable running speed of the printing press, the manual feeding point should be fixed。For paperboard with poor flatness, it should be properly handled, such as folding along one side (or both sides) of the cardboard horizontal press line;The gap between the paper guides should be the same, which is an important link related to the stable operation of the cardboard, and is also an important method of the "running version" phenomenon。Keep the printing equipment in good condition。It should be emphasized here that keeping the roller and plate clean and clean is directly related to the printing effect。The roller is related to the ink transfer performance, and the printing plate is related to the clarity of the printed text and pattern。
Corrugated box in the printing should pay attention to the eight problem: keep the ink transfer stable
For this reason, the printing speed must be kept balanced and stable。Because the printing speed is related to the ink transfer state, it must be balanced and cannot be fast or slow。It is also necessary to maintain a balanced paper, and no paper feeding phenomenon can occur。Only in this way can the ink printing press have a stable ink transfer state, which plays an important role in maintaining the stability of the ink printing color。
Corrugated box in the printing should pay attention to the problem nine: minimize the number of overprinting
The more overprinting times, the more serious the decline in compressive strength of corrugated boxes。
This article is taken from the network by Xinhua Packaging carton factory, if it involves copyright issues, please inform!