Blot excess water from the printing side with newsprint (unprinted newspaper stock).īlockout Option 1: Before drying and exposing the coated screen, use excess emulsion from the coating step to cover the blockout area. Rinse both sides of the screen with a gentle spray until no soft emulsion is left on the squeegee side, and no foam or bubbles remain. Then spray forcefully from the printing side until the image areas clear. ■ The print best duplicates the test positive at the required level of resolution.Īfter exposure, wet both sides of the screen with a gentle spray of cold water. ■ The squeegee side emulsion is hard and not slimy after washout. Use Ulano’s Exposure Kit to test exposures above and below the Approximate Exposure Time, or make a Step Wedge Test following instructions on the “Support Tab” video on our Web site: Optimum exposure is indicated when: ■ No positive outline or darkening of the emulsion color is observable if the exposure is increased. Base Exposure Time X Exposure Variable Factors = Approximate Exposure Time.,
Refer to the Base Exposure Table (reverse side). Step 5: CALCULATE THE APPROXIMATE EXPOSURE TIME.If using a commercial dryer, dry the screen with warm, filtered air, up to 104° F. Then, after drying the screen, apply two additional coats on the printing side, wet-on-wet.ĭry multicoated screens (Methods 2 or 3) thoroughly in a horizontal position, printing side down, at room temperature in a dirt- and dust-free area. After each coating, rotate the screen 180°. Method 2: Apply two coats on the printing side, then two coats on the squeegee side, wet-on-wet. Method 1: Apply one coat of emulsion on the printing side, then one coat on the squeegee side. Orange should be handled only under yellow safe light conditions. Screen fabric treated with Magic Mesh Prep can be coated with emulsion more evenly and will transfer ink more readily during printing. Abrading and degreasing can be combined in one step with Ulanogel 23.) A degreaser, Magic Mesh Prep also serves as a wetting agent and antistatic treatment. It increases the surface area of fabric for a better mechanical bond of the stencil, increasing printing run length. (Mechanical abrasion is an option for new fabric that is not surface treated. 3, or dilute Screen Degreaser Concentrate No. Used or surface treated fabric need only be degreased using Magic Mesh Prep, Screen Degreaser Liquid No. Orange reduces stencil-making time-in coating (because of its high viscosity), drying (due to its high solids), and exposure (due to its high photo-sensitivity despite its “masking color.” Read more Read less
Orange stencils are durable, will not become tacky under high humidity conditions, and have excellent wet strength and exposure latitude. Orange resists plastisols, most washup solvents, and some water-based textile inks, and it is easy to reclaim. Its high solids content (44 - 46%) results in better mesh bridging and edge definition, and fast drying. Orange has high viscosity (6,000 – 8,000 centipoise) that improves control when coating screens by hand and makes it a good choice for coarse mesh. Despite its anti-halation color, Orange is ultra-fast-exposing! It is perfect for shops with high stencil making throughput, as well as shops with fluorescent tubes or other low-intensity light sources. With Orange, it is possible to use less costly white mesh without the closing up of fine lines and details. It is formulated with a “masking color” that reduces light scattering-the major cause of loss of resolution. Orange is a ready-to-use SBQ-photopolymer direct emulsion formulated for imprinted sportswear printing.
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