It is necessary to understand the operation of ink printing machine. After learning the operation skills of ink printing machine, technicians can improve their skills to a higher level, and also help friends who learn by themselves.
1, the back exposure should be immediately after the main exposure, because the photosensitive activity will gradually disappear, resulting in a longer main exposure time and poor exposure tolerance.
2, through the back exposure can be established version of the base in order to get the required relief and strengthen the adhesion of polyester supporting film and photosensitive resin layer. Correct back exposure from the direction of the polyester support film protects the fine pattern of the plate during the washing process and prevents the relief from collapsing.
3, when the resin version of the guarantee layer is torn off, the version of the photographic speed of the rapid decay, should immediately put the film film on the plate or in 10 minutes for the main exposure in order to get the best effect.
4, the main exposure time can be determined by the main exposure test, the photosensitive resin by polymerization into insoluble, printing plate can reproduce the fine pattern on the film. Before the main exposure, the vacuum film should be manually wiped to drain the air so that the plate and the negative film close.
5, the plate must be dry, otherwise it will affect the thickness uniformity of the plate, after drying, do not let the printing plate contact with other object surface, do not touch the printing surface with your fingers, otherwise it will leave traces. But before sticking, be sure to remove any spots on the surface of the plate. To stick, to clean the resin version of the back left residual spots, if you do not clean these things, will affect the plate thickness uniformity and plate adhesive tape.
Post time: Aug-31-2021