What is the metal flat sign?

    The metal flat plate is mainly a metal plate that uses the light-sensitive plate to dissolve different colors into the plastic film and make them appear on the metal plate through the development method, so as to achieve the purpose of explanation.

    The following is the specific process flow and formula (process flow of flat plate) of several metal flat plates that are often contacted:

    Flat aluminum plate: It uses the method of photosensitive plate making to put different pigments into the plastic film to make its characters and patterns appear on the metal plate, so as to achieve the metal plate with explanatory significance.

    1) Blanking: It is required that the size of the blank should be generally larger than the size of the plate-making (more than 5mm), and the plate surface should be flat and smooth without pits.

    2) Pretreatment: ① polishing ② wire drawing ③ treatment ④ oxidation and other methods.

    3) Water sealing: After degreasing and film removal, the treated board shall be quickly immersed in water and shall not contact with air.

    4) Glue application: glue solution configuration. Glue: 200-230g water: 1000ml, boiling water for 2 hours to fully dissolve the glue, add photosensitizer (ammonium butyrate) 25-30g when the temperature drops to 30-50 ℃, and then evenly coat the glue on the metal plate, and dry it for use.

    5) Printing: The SB750 vacuum printer can be used for photosensitive printing. The lamp is 60-90cm long and 40-80 seconds long. After taking it, it is put in warm water for development for 1 minute and put into the color solution for dyeing.

    6) Gloss retention: After fully dyed brands are cooled and dried, use a brush or spray gun to apply gloss retention paint (generally use eye baking paint or non-baking gloss retention paint).

    7) Cut into.

    Flat label is generally used for indoor articles, small household appliances and equipment not affected by bad weather. The advantages are simple plate-making process, fast speed, timely delivery, and low defective rate. The disadvantage is that it is easy to fade after exposure to the sun and rain. Outdoor signs are not allowed.