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technical data sheet NAZDAR PSLC294 UV Litho Overprint ClearPSLC294 UV Litho Overprint Clear is a UV clear coat that has been formulated to yield a very durable and flexible film that exhibits an exceptional gloss finish. PSLC294 is designed to screen print over previously offset printed paper and cardstock. |
Rev: 2.00 |
Substrates
User InformationMesh305-420 tpi (120-165 tpcm) monofilament polyester mesh for most applications StencilSolvent resistant, UV ink compatible direct emulsions and capillary films Squeegee70-90 durometer polyurethane squeegee PrintingPSLC294 UV Litho Overprint Clear is formulated to be press ready. Thoroughly mix the ink prior to printing. Maintain ink temperature at 65°-90°F (18°-32°C) for optimum print and cure performance. Lower temperatures increase the ink viscosity, impairing both flow and cure. Elevated temperatures lower the ink viscosity, reducing print definition, and film thickness. Pretest to determine optimum printing performance for a particular set of ink, substrate, screen, press, and curing variables/conditions. The ink can be affected by stray UV light. Be aware of skylights, windows and overhead lights curing the ink in the screen. Leaving a container uncovered may result in the ink's surface forming a "skin," caused by initial chemical reaction with room lighting or other stray lights. Keep containers covered. Light filters are recommended. Cure ParametersPSLC294 UV Litho Overprint Clear cures when exposed two medium pressure mercury vapor lamps set at 200 watts per inch with a conveyor speed 100 to 125 feet per minute. This guideline is intended only as a starting point for determining cure parameters, which must be determined under actual production conditions. |
AdditivesAll additives should be thoroughly mixed into the ink before each use. Prior to production, test any additive adjustment to the ink. Reducer: Use RE310 to reduce the viscosity of these inks. Add up to 15% by weight. Flexibilizer: Use RE308 to increase the flexibility of these inks. Add up to 15% by weight. There is no pot life; however, the addition of RE308 could show a decrease in block resistance. StorageStore tightly covered at temperatures between 65°-90°F (18°-32°C). Ink taken from the press should not be returned to the original container; store separately to avoid contaminating unused ink. General InformationInk HandlingDirect skin contact to UV inks is the primary route of exposure and irritation. Therefore, it is recommended that all personnel handling these products wear gloves and barrier cream to prevent direct skin contact. Safety glasses are suggested in areas where ink may be splashed. If ink does come in contact with skin, wipe ink off with a clean, dry cloth (do not use solvent or reducer). Wash the affected area with soap and water. Consult the Safety Data Sheet (SDS) for further instructions and warnings. PSLC294 UV Litho Overprint Clear is a one-part, 100% solids UV-curable screen printing ink and does not contain N-vinyl-2-pyrrolidone (trade name V-Pyrol®). Adhesion TestingEven when recommended UV energy output levels are achieved, it is imperative to check adhesion on a cooled down print:
Weathering / Outdoor DurabilityPSLC294 UV Litho Overprint Clear is not recommended for outdoor use. |