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Price Tag Printing Covers Several Major Printing Methods

  Price tag plate making process

  Price tag printing covers several major printing methods, in the plate making stage.According to the different nature of the product, choose a different printing method, for different printing methods, plate making process is also different. In this paper, a flexible version of the plate making process as a brief introduction.

  Flexible version of the plate making process: the original one film (film) a exposure of a washing a dry one after the treatment.

  1. Original. Suitable for flexible printing of the original design should have the following characteristics: more color, but less printed; do not require the reproduction of special small details; cable is not too high, but can achieve color printing effect;

  2. film (film). Meet the plate needs, Price tag graphic clarity, the size of the size of accurate specifications; with frosted film, requiring the four corners of the same density; the use of film positive words; with a transmission density meter, white density of 0.06 or less; black density of 3.5 or more.

  3. Exposure includes back exposure and main exposure.

  ① back exposure. The support sheet of the photosensitive resin plate is upward and the protective film is tiled down in the exposure drawer for exposure. Price tag The ultraviolet light passes through the support film to cure the photosensitive adhesive layer to establish a stable substrate, and the depth of the wash plate can be controlled to enhance the binding force between the support film and the photosensitive resin layer. The back exposure time is determined according to the desired substrate thickness.

  ② main exposure. Also known as positive exposure, photosensitive resin plate support film down, protective film facing up. Tile in the exposure drawer. The protective film will be torn off once, and then the film film surface affixed to the photosensitive resin plate above the vacuum film flat female  high yield * female A check method covered in the film (non-medicine The film is vacuumed so that the film is tightly adhered to the photosensitive resin layer, and the ultraviolet ray passes through the vacuum film and the translucent part of the film so that the photosensitive part of the plate is polymerized and cured, and the main exposure time is determined by the plate type and the light source. Short will make the text gradient too straight, lines bent, small print, small part of the part was washed away, and vice versa exposure will be too long version of the book, writing fuzzy. If the same plate on a large, Xiaoyu, thick, fine lines . Visible conditions are covered with black film, respectively. The small part will not be lost due to flushing to ensure the quality of the plate.

  4. rinse. The part of the non-photosensitive part of the wash, Price tag to retain the photopolymerization of the relief. The length of the wash plate according to the thickness of the plate and the depth of the decision, the version is too short, the version will leave the non-photosensitive resin and affect the plate depth, washing time is too long will make the plate expansion, resulting in fine part of the deformation or Fall off.

  5. Drying. Remove the wash solvent, so that the plate to restore the original size of the thickness. The baking temperature is between 50-60 ° C. Baking time according to the thickness of the plate and wash the length of time to determine the general thick version of two hours, thin version of an hour. Baking time is too long, Price tag the bake temperature is too high will make the printing plate brittle and affect the printing life. Baking temperature is too low will extend the drying time, baking time is too short, there will be printed when the bad version of the phenomenon.

  6. Post-processing. That is, after sticky and after exposure. So that the photosensitive resin completely hardened (polymerization) to achieve the hardness index, and to eliminate the printing plate sticky, in order to facilitate the ink transmission. The post-processing time is obtained from the test, the purpose is not to crack, no sticky.

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