Label manufacturers about label light-sensitive plate method

Sign the manufacturer about the brands of photographic plate making method of screen printing plate printed CARDS used in the precision demand is higher, generally USES the advanced direct, indirect, straight between three kinds of photographic plate method. A, direct plate making method: (1) post box use aluminum frame, needn't net - tense - - - - - - > sign manufacturers about brands of photographic plate making method of screen printing plate printed CARDS used in the precision demand is higher, generally USES the advanced three photographic pattern between direct, indirect, direct method. A, direct plate making method: (1) post box use aluminum frame, don't have to stretch mesh tension net maneuverability, air pressure in the 5-6 kg/cm2, use acetal adhesive nets, tension tightness measured with tension, tension 5-7 kg, sink size should be less than 2 mm. 2 clean screen: washing powder, detergent, such as ethanol was used as clean lotion, clean both sides of the screen, clean with clear water, after drying. The purpose is to make network better and emulsion adhesive. (3) scraper ( Coating, coating) : coated photosensitive glue scraper can be made from stainless steel, also can be made from organic glass scraper. Its length is generally smaller and screen box inner diameter ( The length of different kinds of scraper as a standby) B。 The edge of the scraper must thin without blade, smooth and straight, not allowed to have defects such as concave and convex, burr, scars, to heart impact plate making quality. Coated screen sensitive glue, each with three times to dry again, need for three to four times in a row, until the thickness of the film to need further exposure. (4) the temperature of the drying oven, ideally with adjustable temperature drying oven. Sensitive glue drying temperature and control in 40 degrees or so commonly, baking time is too long or the temperature is too high, will affect the quality of photosensitive layer. 5] security lights: studio lighting light source, generally USES the orange, yellow or red light as security lights, but from the vision, orange light source is comfortable. Its brightness can clearly see all objects as appropriate. [6] inspection blank: blank must be examined before plate burning, including the columns of the dust, blank black degrees, the lines are short, sand hole defects, etc, and the image character of positive and negative is in line with the requirements. B, indirect method: (1) prepare net frame and photographic film: the guy a good net box ( Nylon 220-260) Clean with 10% sodium phosphate solution, remove grease. Line network photosensitive film membrane is a kind of to gather enol rubber as the main body of the photosensitive adhesive, film membrane is at 0. 12-0. 06 mm transparent plastic sheet base on the sensitizer coating gelatin as the main body, before using graphic size, each side out of the 20 mm wide, powder on the membranes of the cloth to wipe clean dirt. 2 exposure: the film film and blank pressure inside the plate burning machine, using carbon lamp or xenon lamp exposure. Net frame and the distance of the light source for 50 to 60 cm, exposure time 2-6 minutes. (3) developing: after exposure, the thin film on the tablet, with warm water infiltration retinal 1 to 2 minutes, water nozzle spray, water soluble without photosensitive part ( Graphics part) After plate burning, development of thin film, until the image is clear. (4) stick film membrane: the exposure of film membrane surface on the screen, the back of the membrane with rubber plate or other straight, scraping paste gently, make contact with the network and firm, immediately put inside oven, under the condition of temperature 55 plus or minus 2 degrees bake for 8 to 12 minutes, after drying, the net box testing-run fixed on the plate. Methods: [6] to the membrane in the process of exposure, development, version found unqualified, brushes off with warm water can put the film back immediately. If the version has been dry or production again after a period of time to film, one copy each of the available industrial sodium hypochlorite with water, soak 10-20 minutes. Or 5% naoh aqueous solution heat treatment network edition, can remove the film. Between C, direct plate making method: between direct method is the direct method and indirect method of mixed plate making method, its difference with the indirect method, the indirect method, first on film membrane on the image to the screen again after quote, and between direct method is to film a film re-posted after exposure to make the image on the screen. Brands manufacturers according to the plate shape classification: 1, the horizontal type sign: the proportion of transverse comparison. General finishing were used for the advertising sign. General on the metope of small shops and large buildings can be seen. 2, vertical plates: the proportion of long vertical comparison. General finishing were used for the advertising sign. 3, tu form sign, in the structure of the highlight on metope, except on the back of the whole face or be used on both sides have walls on both sides signs for advertising vehicles. 4, cylindrical panels: mark on the ground of some fixed structure on the horizontal and the vertical, three-dimensional shape sign 5, rooftop sign: refers to in setting some fixed on the roof of a building structure, and hanging in the above or on the strip shape living cube or magic sign.