有机玻璃标牌丝印技术及印刷要点（Organic glass sign screen printing technology and printing points）.docVIP

有机玻璃标牌丝印技术及印刷要点（Organic glass sign screen printing technology and printing points） Organic glass sign screen printing technology and printing points 12-16 In the sign production process, play a decisive role is the screen printing plate and substrate pretreatment process technology and printing points and screen printing ink choice. A, a board: 1, paint engraving: Its a kind of manual plate making method. Its simpler. Prints generally less refined monochrome patterns and text. (1) sprayed film engraved paper: will the tracing paper with paste on a flat board with paibi rubber water 1 (volume ratio), gasoline 1 fine, evenly coated paper, dry after spraying soft varnish 3 - 5 times, each time after spraying, in an oven with 40 degrees ~50 spray drying, the film thickness to 5~6 mm is appropriate, the film should be bright and uniform, no bubbles, no stain. (2): the film paper engraving graphics in the graphic, with a knife, knife, ruler compasses by the graphic engraving, gently remove the film. (3) engrave: after carving the figure, then can have done the thing of the past on the silk screen frame. The method is carved a good film on the net box below pressing with cotton dipped in a little thinner in the above complex to the film and gently rub, screen glued so far. After drying for a few minutes, remove the drawing paper. If the paper is not full out, usable cotton wipe water. The blank part is painted with nitrocellulose lacquer, and the mesh of the silk screen is blocked. Print after airing. 2 carbon paper printing method: It is also a simple manual plate making method. (1) cut sensitive paper: sensitive paper is a kind of mixture, thickly coated with oxygen barium base paper made of carbon paper, according to the size of graphics cut spare. (2): soaking in solution 500 without sensitization and 20 grams of prepared in 3 ammonium dichromate - 5 minutes, remove the carbon paper, the moisture to dry. (3) exposure: the carbon paper flat on clean glass, plastic film