The advantages and disadvantages of gravure preprinting

a. Advantages of gravure preprinting 1) Color carton produced by gravure preprinting can get high quality, green ink and ink prints. The amount of gravure printing ink is larger than other printing methods. Intaglio printing ink is full, the ink layer is thick, there are three-dimensional Sense; colorful, rich layers, high definition. Among various printing methods, the printing quality is best, and the printing quality is stable. The tension control system of the gravure printing machine controls the stable operation of the machine, and the automatic color registration control system can ensure that the overlay accuracy reaches #177 and 0.1 mm. The gravure printing is fully dried after each color printing, and the printed products are more firm.
After the gravure printing, the number of printed nets can reach 200 l/in. Even with the use of paper with high surface smoothness, gravure printing can achieve high printing quality. Preprinted water-based gravure printing ink is used for printing, which is non-toxic and non-polluting and meets the requirements of environmental protection. At present, the domestic production of gravure printing paper, ink, etc. are already relatively mature, can withstand corrugated paper production line 200 °C high temperature and hot Plate friction requirements. Gravure printing can also print and polish once.
2 Gravure Preprinted Plates High print resistance and suitability for large-volume production of cartons Since the gravure plate is a steel chrome-plated electrogravure, the entire plate is protected by a hard layer of metallic chrome, so even when printing With the non-stop contact with the layout, it still maintains a high resistance to printing force, generally up to 300 to 4 million impressions, which is suitable for high-quality, large-volume printing production requirements of cartons.
3 Gravure Preprinting A printed offset suitable for a continuous stretch of pattern is to wrap the prepared plate on the plate cylinder. Therefore, there is always an area on the surface of the plate roller for fixing the plate. The gravure printing plate is different because the plate making operation of the gravure printing plate is directly performed on the cylinder body. Therefore, as long as the image on the cylinder is seamlessly spliced, a continuous continuous pattern can be obtained on the substrate.
4 The corrugated box produced by gravure preprinting has higher strength. Because the preprinted corrugated box is produced on the production line, when the corrugated board is made, it has a certain heating and forming time, so it is better than the traditional method using a veneer machine. The corrugated box has higher strength and can avoid direct printing damage to the carton and improve and improve the strength and stamping strength of the corrugated box.
5 Gravure preprinting has high printing speed and high production efficiency. Because the preprinted printing method uses the web gravure printing machine to print, there is a drying device after each color is printed, and it is not necessary to spray powder to enter the next process. The printing speed can reach 150 meters/minute. In the high-speed gravure printing process, a roll of material can be printed in a short period of time. The use of a non-stop automatic roll changer to replace the roll can greatly increase the printing efficiency. After printing, the upper corrugated paper production line is made of corrugated cardboard, which is much faster than the traditional veneer machine.
b, lack of gravure preprint:
The gravure platemaking is complicated, and the cycle for producing a steel chrome-plated electrogravure roller is generally 5 to 10 days, and the price is higher, which is 8 to 10 times that of the flexographic plate; the gravure printing technology is more complicated and the procedure is relatively more The investment in the entire production line is relatively large.