Screen printing method
A technology of screen printing and substrates, applied in the field of sign making, can solve the problems of low production efficiency, high labor intensity, high energy consumption, etc., and achieve the effect of saving auxiliary materials and energy and improving production efficiency
Inactive Publication Date: 2014-12-24
ZHENJIANG JIANGCHENG METAL PROD
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AI Technical Summary
Problems solved by technology
Although this method has the advantage of small deformation of graphics and text, it has defects such as many manufacturing processes, low production efficiency, high labor intensity and high energy consumption.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The present invention will be further described below by specific examples.
[0012] In the sign production process, the decisive role is the screen printing plate and the pre-treatment process technology of the substrate, the printing points and the selection of the screen printing ink.
[0013] 1. Screen printing plate making:
[0014] 1. Paint film engraving method:
[0015] It is a kind of manual plate-making method, which is relatively simple. It can print generally less delicate monochrome graphics and text.
[0016] (1) Spray engraved paint film paper: stick the tracing paper on the flat wooden board with paste, mix 1 part of rubber water (volume ratio) and 1 part of gasoline with a pad pen, and apply it evenly on the paper surface After drying, spray soft varnish 3-5 times. After each spraying, dry it in an oven at 40-50 degrees. The thickness of the paint film should be sprayed to 5-6 mm. , no stains.
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Abstract
The invention provides a screen printing method and belongs to the technical field of sign manufacture. According to the technical field, the method includes 1, printed object surface treatment, namely removing the surface oxide layers of copper base and iron base materials through dilute sulphuric acid, flushing through flowing water, and printing after drying; removing greasy dirt of aluminum based material through hot sodium carbonate solution, flushing and drying; 2, selecting baking enamel, air drying enamel, solvent volatile ink or two liquid type ink; 3, positioning the printed object through three point boundaries, printing light color before dark color, allowing the clearance between a printing plate and the printed object to range from 1 to 2mm, adopting a polyurethane rubber plate as a scraper with the hardness of 70 to 75 degrees and the thickness of 8 to 9mm, allowing the angle of the scraper during printing to be 70 degrees, and moving the scraper in the uniform speed in a linear manner; 4, pasting a pressure-sensitive adhesive protective film onto the surface of the printed sign, and pasting double-sided adhesive tape to the back.
Description
[0001] technical field [0002] The invention belongs to the technical field of label making, and in particular relates to a screen printing method. Background technique [0003] Now all kinds of signs have been widely used in the electronics industry and household electrical appliances, especially after the surface of various signs has adopted a new decoration process, the colorful decorative effects are displayed in front of people, which further enhances the product quality. value and competitiveness. [0004] Corrosion sign is a traditional sign. There are sandblasting and oxidation paint signs for instrument panels, corrosion baking paint signs for vehicle and ship license plates, equipment numbers and nameplates of various machine tool electrical appliances, and electromechanical signs for harsh industrial environments. Copper front-plated signs for products, porcelain oxidation lacquer signs for surface decoration of instruments and electronic instruments, and high-g...
Claims
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Inventor 戴颖锋
Owner ZHENJIANG JIANGCHENG METAL PROD