In the case of a single-faced corrugated board production line, if the glossy paper is still to be coated after finishing the printing of the facing paper, and the production volume is large, it may not be printed on the surface paper, but a gravure printing method is used to complete the gravure printing on the plastic film. Add a white primer, then the printed plastic film and the paper first compound, and then complete the box according to the conventional carton forming process.
Process features are:
1 Carton production costs are low. When the production volume is large, such a process can greatly reduce the printing cost of the tissue paper and the material cost of the tissue paper. Because the noodle paper does not need to be printed, non-coated white paper can be used, so that the cost of the noodle paper is greatly reduced.
2 beautifully printed. Because plastic gravure is used, the printing effect can be comparable to that of offset printing. It is necessary to pay special attention to the fact that in the process of plate making, it is necessary to fully consider the dimensional change and deformation of the plastic film. Otherwise, the carton face paper will be misaligned with the lower cardboard.
2 , Coated paper gravure printing composite carton process
When the production volume is relatively large, the film is not required and the printing effect is good and the cost is low, this process can be adopted. The process involves first printing a thin (60 to 90 g/m2) coated paper with a paper gravure printer, and then combining this finely-printed coated paper with ordinary slagboard or linerboard as a whole. Pairing and normal carton forming.
Process features are:
1 Carton production costs are low. The main reason for the reduction in cost is to convert whiteboard paper to low-weight coated paper in combination with cheap linerboard, which reduces material costs.
2 beautifully printed. Paper gravure printing is very beautiful.
3 Gravure plates are more complicated and costly, and are not suitable for printing carton products that are often revised.
4 The operation and control methods of the printing process, such as paper compounding and box making, must be carefully explored, accumulated, and reasonably implemented. Otherwise, the waste product rate will easily increase.
3 , direct offset printing corrugated box process
Corrugated cardboard box direct offset printing process is relatively mature abroad, it is the corrugated board directly on a special offset press for printing, suitable for processing thin corrugated boxes.
The process can not only ensure the good moldability of the carton, but also can complete the exquisite face paper printing, but the printing machine used is relatively expensive. In the next few years, this process may become the new direction for the development of high-end carton printing in China.
4 , screen printing corrugated boxes
The screen printing corrugated box process uses direct printing. Since the ink ratio of the screen printing plate is proportional to the hole pitch of the screen, the resolution of the screen printing is not high and the image accuracy is low. The number of conventional screen lines is 60 to 80 lines / inch.
Screen printing corrugated box with advantages:
1 The printing format can be large or small.
2 can be completed before the box into the printing, but also after the box into the printing.
3 The screen printing ink is thick, its color saturation is high, the visual effect is strong, especially the spot color prints the field, the effect is better.
4 Plate making is easy and the plate making cost is low.
5 The printing cost is low.
6 The printing quality is relatively stable. The disadvantage of the screen printing corrugated box is that it is not suitable for the linkage production line and the production efficiency is low.
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