Silk screen processing printing film is laser printing or sulphate paper can not replace. Must be professional manufacturer output Zhengyang or sunrise film. Each output outputs a blank film with a positioning reticle. When printing, the blank network cable film is fixed on the glass plate with transparent tape. Other color films should also be subject to this, so that the position of the printed network board can be consistent.
Fine screen production, must choose high resolution imported sensitive adhesive and high tension and low elongation of imported screen printing.
Printing ink should be high gloss, friction resistance of plexiglass ink, especially matte ink should not be used for surface printing, because this ink is not resistant to friction, color is not gorgeous. For outdoor light boxes and signs, should also use good light resistance imported ink, in order to resist strong light irradiation, prolong its service life.
Screen color matching is generally based on the experience of screen printing master. Due to the different number of screens used in each batch of orders, the thickness of the sensitive film is also different, often resulting in printing color bias. "The ink in the barrel is not correct, and I didn't see the true face until I scraped the last version" just shows this truth. So each batch of orders have to be dry screen printed, printed samples. Only after the customer confirms that the color is consistent with the original, it can be officially printed.
Large pictures must be printed with a screen press, small pictures can be printed with a suction pad. In the printing process to maintain six consistent :① the spacing of multi-color silk mesh to be consistent; (2) The scraping speed is consistent; (3) Keep the scraping pressure consistent; (4) consistency of ink viscosity; ⑤ When manual scraping, the hardness of the size of the scraper should be the same; ⑥ Keep the temperature and humidity of the printing shop consistent.
Double-sided organic board signs can be made of transparent board, using reverse printing. After the graphic is printed, a layer of background color is overprinted and the two pieces are glued together. The adhesive between the two pieces must be a non-corrosive screen printing ink.
When multi-color overprinting, in order to ensure the accuracy of overprinting, the size of other versions can be scaled appropriately (the size after scaling shall not exceed 0.1~0.3mm) on the premise of keeping the size of the graphic version unchanged. When printing, deep plate press shallow version, graphic version press release version, so in the organic version size cutting is not accurate or manual version and positioning block connection is not good, overprint can be accurate.
Plexiglass surfaces often have a lot of static electricity and dust. If dust sticks to the screen, it will cause incomplete characters and color blocks, resulting in waste products. Therefore, printing must be carried out in a clean and dust-free room. Dust can be removed in two steps. Wipe the dust off the surface with a wet cotton cloth, and then use an electrostatic dust brush or dust roller brush to remove the remaining dust. When printing, check as you print. If you find problems, clean the screen before printing.
Generally in large and medium-sized shopping malls, products (jewelry, cosmetics, watches) advertising rack, display rack mostly pursue matte effect, in order to foil the bright and colorful goods. At this time we can use sanding board or choose flat or transparent board directly with sanding ink printing, ink dry can also show the effect of matte sanding.
The size of the plexiglass plate should be cut uniformly, at 90° for each Angle. Multi-color overprint or four-color printing should use porcelain white or transparent plexiglass plate. Porcelain white board for front printing, transparent plate can be Dongguan screen printing processing double-sided printing.
