| 摘要 |
Compositions, methods, and apparatus for use in connection with printing inks, including screen printing inks. The printing ink contains microparticles made of a resinous or plastic material such as polyurethane or polystyrene. In one embodiment, a water-based screen printing ink composition includes 20% by weight transparent polyurethane microspheres having a mean particle size of about 18-25 microns and 5% by weight butyl cellosolve and 10% by weight water is printed using a 160 thread count mesh upon a 59# paper stock. That particular implementation produces a printed article in which the beads stack upon one another to effect a relatively continuous but random pattern of aberrations in the printed ink surface that provide a soft, leathery tactile property and substantially increased mar resistance. The mar resistance obviates the need to separately apply a protective varnish and substantially reduces production and materials costs.
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