Quantity Takeoff


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Quantity Takeoff

  1. 1. Photographic Emulsion Method for screen printing industry The photo emulsion technique is the most desired method for making silk screening stencils because it can create the printing text or images with fine line drawings, a range of hand and commercial lettering techniques including photographic half-tone positives. You can get your own personally-designed unique prints on fabric, clothing, paper, or whatever you like under your screen. Photo emulsion is thick liquid material that response to light and it gets attached to surface at the time of exposing to light. This situation is ideal for formulating a stencil: we'll "toughen" up parts of the stencil which is needed to keep it solid, and then wash away the rest. Apply polyester or other appropriate synthetic fabric or screen material. Restrain from applying silk or organdy if you want to retrieve the screen. There exist three things for all methods of photographic Screen Printing • a screen prepared with a light-sensitive coating, • a film positive, or equal, and • a light source facilitating to transmit the solid images on your positive to the light- sensitive screen. Applying the Emulsion Apply a thin layer of photosensitive emulsion over both sides on the screen with either a "scoop coater" or a standard squeegee and let it dry. Thumb tacks stuck into the corners of your frame work so that the emulsion-coated top side is not laying on the surface at the time of flipping it over. Ensure that the both side of the screen is covered entirely so that no ink can get through any holes. The edges are particularly prone to this, and will provide stray lines of ink to show up on print. You then need to place a black image on transparent or translucent surface, set it against the screen, and then expose the screen to light. The light will make the emulsion toughen and joined with the fabric. The place in which the light hits the screen, the emulsion will attach creating a solid layer. Alternatively the place in which the light is blocked the emulsion stays water-soluble. You must spray down the screen with water after exposing the screen and wash off the emulsion where your image was positioned. This is the clear area in which ink will be pushed through the screen at the time of printing. At last, you put down the screen on your t-shirt, other fabric, or paper, put ink on the inside of the screen, and press the ink through the screen. In the case of applying textile ink, you can heat-set the ink after it getting dried. It'll become everlasting and washable. Summary This publication provides detailed information on Photo Emulsion method for standard screen printing. Reference http://www.reuels.com/reuels/Silk_Screen_Printing_Instructions.html
  2. 2. http://www.instructables.com/id/Photo-emulsion-Screen-Printing/ Useful links http://printingchemical.com/paper_printing.php http://printingchemical.com/textile_printing.php Company Information: Global Associates provides you the largest database of chemicals and dyes product searchable directory and B2B free online market place for Global Manufacturers including selling leads directory, company directory and region directory for all countries. Company Address Global Associates P-100, Block-A, Lake Town Kolkata, India, Zip-700089 Phone - +91(033)2521-8508 Toll Free – 866-493-4944 Website : www.printingchemical.com Email:info@printingchemical.com