Ink Composition for High-Quality/High-Definition Screen Printing, Printed Matter Produced by the Screen Printing Ink Composition, and Method for Producing the Printed Matter
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May 28, 2015
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Jan 27, 2015
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Abstract
An ink composition for high-quality/high-definition screen printing that, when producing printed matter by screen printing on an object to be printed using a 360-mesh screen printing plate formed by a high-strength, non-deforming stainless steel mesh with a filament diameter of 25 μm, produces printed matter with a printed image edge spreading width of no more than 10 μm from the image design dimensions of the printing plate, the ink composition for screen printing containing a solvent with a boiling point of 170° C. or higher at 70 wt % or greater of the total solvent, and a prepolymer or polymer with a weight-average molecular weight of 2000 or greater at 2 wt % or greater with respect to the total ink composition, and having a viscosity of 30 to 180 Pa·s as measured with a BH-type rotating viscosimeter at 25° C., and a thixotropic index of 2.0 to 8.0.
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