Label printing requires back exposure. The photosensitive resin plate with the support film up and the protective film down is laid flat in the exposure drawer for exposure. main exposure. Also known as front exposure, the photosensitive resin plate support film faces down and the protective film faces up.

Label printing requires flushing. The non-photosensitive part is washed and dissolved, and the photopolymerized relief is preserved. The length of the plate washing time is determined according to the thickness of the printing plate and the depth of the printing pattern, and the plate washing time is too short. drying. Remove the washing solvent to restore the original size and thickness of the printing plate. The baking time is determined according to the thickness of the plate and the length of the washing time.

Post-processing, namely detackification and post-exposure. Make the photosensitive resin completely harden (polymerize) to achieve the proper hardness index, and eliminate the viscosity of the printing plate, so as to facilitate the transfer of ink. The post-processing time is obtained from the test, and the purpose is to not crack or stick.