The production process of silk screen signs you don't know

Silk screen printing, as a major characteristic industry in the printing equipment industry, plays an important role in the printing industry. Screen printing is the oldest of all printing methods. With a wide range of printing materials, a wide range of ink choices, and the best transfer of Ink thickness among all modern printing methods, in recent years, the printing market has continued to warm up. The most important thing in the production process of silk screen signs is; Bottom plate; ,; Pre-treatment; And; Screen plate production; Three processes. The plate-making process determines the quality of the sign. 1, the bottom plate production. Most of the text and graphic plate-making of the sign adopt phototypesetting and phototypesetting. First, make a single original, and then use the continuous drying machine to make up the plate. When composing, The unspaced version and the spaced version can be used according to the precision required by the parts. The size of the sign is not high, and no spacing can be used. After the printing is completed, it can be directly cut or punched after cutting. If the size accuracy of the signage is high, it should be used with spacing. After the printing is completed, it should be punched according to the position of the positioning hole. The distance between each part can be 2mm, and the positioning aperture can be 2mm. The hole spacing is 4mm, the overall area can be 400 ×400, or according to process design. If the color of the screen-printed sign is two or more than two colors, the bottom plate should have a positioning rule line, and the positioning hole can be drawn on the bottom plate of the main pattern of the sign to ensure the metal screen-printed sign during blanking, the accuracy of the positioning. 2. Positioning of screen printing screen. Positioning is the key to accuracy. Whether positioning is accurate or not is the key to determine the quality of metal screen printing signs. The rules on the screen printing plate are the technological means to ensure the accuracy and unity of the positions of the figures on the surface of the same printed workpiece and to meet the requirements of color overprinting precision. 3. Deployment of ink for metal screen printing signs. The requirements for silk screen printing ink for metal silk screen signs are strong adhesion, good wear resistance, clear graphics after printing, fast drying and no net sealing. If the screen printing color label, can refer to the relevant color printing ink color sample with ink, ink should be added to the appropriate amount of ink and desiccant. The amount of ink desiccant added is about 5 ~ of the total amount of ink ~ 8%, adding less is not easy to dry, adding more will affect the adhesion of the ink. 4. Quality requirements for metal silk screen signs. The characters, scales, graphics, positioning holes and colors of silk-screen signs shall conform to the requirements of the drawings. The surface of the finished product shall be free from obvious scratches and stains, and the adhesion of the ink film shall conform to the requirements. These are the more important production processes of silk-screen signs. These three processes determine the quality of the signs,