Printing factory has screen printing signs of plating method

by:ShunDing     2020-09-02
Printing factory has screen printing signs of electroplating method ( 1) In screen printing signs semi-finished products reserved places, drill a hole, the copper wire to tie up through the holes in a short period, on the other side to set aside enough length; ( 2) The metal sign semi-finished products - laser stripe - - - - - -> printing factory has screen printing signs of electroplating method ( 1) In screen printing signs semi-finished products reserved places, drill a hole, the copper wire to tie up through the holes in a short period, on the other side to set aside enough length; ( 2) The laser stripe metal labelof semi-finished products in the degreasing solution, tied the end of the copper wire on the copper pipe, make good contact with copper wire and copper pipe, ensure good conductive, 58 degrees, the temperature is set to adjust time into 300 seconds, current set to 10, remove the laser stripe sign of semi-finished products, in the distilled water rinse clean; ( 3) The electric lifting oil after laser stripe metal sign of semi-finished products, in the nickel chloride solution, set the temperature is 25 degrees, time was 300 seconds, current of 10, in distilled water rinse clean; ( 4) In laser stripe metal labelsemi-finished copper wire clip on a conductive clip, then put the laser stripe metal plate semi-finished products in the in a solution of potassium cyanide gold, and set the temperature of 52 degrees, time for 30 seconds, the current is 5, let the silver plating metal labelback and forth in the solution, take out after zui in distilled water rinse clean. Printing factory has screen printing plates of photographic plate making method of screen printing plates printed CARDS used in the precision demand is higher, generally USES the advanced direct, indirect, direct between three kinds of photographic plate method. One, the printing factory has analyzed direct plate making method: (screen printing signs 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) Cleaning 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 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. Introduces a screen printing, screen printing factory sign the 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) Development: 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. ( 5) To membrane method: in the process of exposure, development, version found unqualified, with warm water can be dropped the brush glue to produce 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. Three, printing factory has analyzed between direct plate making method of screen printing signs: 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.
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