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China Name Plate Manufacturers,we custom name plates,brass plate engraving.
Material:metal,Aluminum,Anodized Aluminum,Brass,Stainless Steel,Polycarbonate,Polyester,Vinyl.
(4) development: after exposure at 40 to 50 degrees warm water soak a few minutes, so that film and positive plates and zinc oxide paper naturally out with warm water to force the developing carefully shaped text is clear.
(5) Posted: good version on the system to be a good stretch mesh screen frame below the screen covered in several layers of newspaper, the pressure on the glass to 1-2 kg / cm of pressure, this when the film and screen firmly affixed, remove the weight and newspapers, dry film with an electric furnace, and then remove the paper, film graphic you go to the wire-line. Carefully check whether the graphic defects, after passing the wire around the graphic medium coated with nitro enamel protection, the silk screen printing plate mounted on the carriage is to prepare for printing. Scope of this same film engraving plate method.
3, the photographic plate method: printing brand precision screen printing plate used in high, generally have adopted advanced direct, indirect, direct between the three photographic plate method. A, CTP method:
(1) post boxes use aluminum frame, you do not need stretching flexibility Stretching, pressure at 5-6 kg / cm, using acetal adhesive net, stretched with tension measurement tightness, tension 5-7 kg, sink size should be less than 2 mm.
(2) Cleaning Screen: Use washing powder, detergent, ethanol and the like as clean lotion, wash both sides of the screen, and rinse with water. After air drying stand. Purpose is to make the network better with photoresist adhesion.
(3) scraping bucket (hopper coating, coater): scraped fighting photoresist coating may be made of stainless steel, it can also be made of plexiglass plate scraper. Its length is generally slightly smaller then the inner diameter of the screen frame (the length of several different scraping bucket dubbed a spare set) B. Must scraping the thin edge of the bucket without edge, straight and smooth, not allowed to have irregularities, burrs, scratches and other defects, heart to affect the quality of the plate. When the light-sensitive adhesive coated wire mesh, each coated with three drying
