How to flexibly print aluminum foil bags

Aluminum foil bag printing flexo printing method 1: effective selection and network line number

The key to effectively selecting and adding network lines lies in the precision of the paper copy. In addition, factors such as printing and plate-making machinery, printing machinery and their printing materials must also be considered. Under the same conditions, the number of added lines for flexo printing is generally smaller than the number of added lines for offset printing and gravure printing.

Aluminum foil bag printing flexo printing method two: choose the business outlets appropriately

Under normal circumstances, if the number of network lines and the percentage of business outlets are the same, the expansion of the square business outlets is more serious when the square business outlets are about 50%. At this time, the diameter of the square business outlets is larger; while the ring business outlets are at 70%. % The expansion of business outlets is more serious when up and down. At this time, the diameter of the ring-shaped business outlets is larger. In addition, at the 10% to 50% and 80% to 90% levels of mediation, the expansion level of the square business outlets exceeds that of the ring outlets; at the 60% to 70% level of mediation, it is the business outlets of the ring outlets. The expansion level exceeds that of square business outlets.

Aluminum foil bag printing flexo printing method three: application of mixed screening technology

The performance of hybrid screening technology makes the smooth connection of any business outlets to traditional business outlets. The 5%～10% and 90%～95% steps are solved through intelligent and automatic solutions, instead of simple insertion of each with a relative density. Style blending. Relative to the traditional screening technology, this type of screening technology promotes smoother expansion of business outlets in repairing and dark-tuning areas, and is easier to predict and analyze, and can be reasonably reduced during pre-press production.

Another benefit of using mixed screening technology is that it can make the range of business outlets for aluminum foil bag printing wider and wider, and most of them can complete 0-99.9% gradation change. For flexo printing, because it is not easy to print out the business outlets in the repairing area, and the mixed screening technology is used, this problem can be handled very well.

Aluminum foil bag printing flexo printing method 4: adjust the level compensation curve

Generally, it is necessary to adjust the adjustment level compensation curve in the adjustment process, and expand a part of the business outlets to expand and contract, so that the later aluminum foil bag printing level curve diagram is close to the ideal level copy curve diagram.

Although the pre-press technology of electronic devices, the technology of laser graphic output and the precise measurement of optical density have shown some advantageous ways to manipulate the expansion of business outlets at this stage, the diversification of printing technology and the rapid development of printing technology will still give a lot of aluminum foil bags. Printing companies are suffering from the expansion of business outlets. Therefore, truly grasping the reason for the expansion of business outlets and grasping a reasonable control method may help aluminum foil bag printing companies to obtain high-quality prints.