Flexographic printing plate elongation deformation to rely on miniature version to help

As we all know, flexographic printing has a phenomenon of unidirectional elongation along the direction of printing. The proportion of elongation depends on two factors. One is the diameter of the platen (including double-sided tape), and the other is the printing. Version body thickness. The larger the plate cylinder diameter, the smaller the plate thickness and the smaller the elongation. One concept that needs clarification here is that the elongation phenomenon is not caused by pressure in the printing. In fact, the flexographic plate has already undergone elongation deformation when the double-sided adhesive is stuck to the plate cylinder.

Therefore, when designing the ink map, it is necessary to make a miniature version. The proportion is based on the thickness of the actual material used and the actual printing length. If computer-based platemaking is used, it is only necessary to give a one-way downsize instruction before designing a color separation. If you use hand-made film, you need to use a deformation machine, you can also get a reduced version of the film.


Source: Ke Yin Network