| 摘要 |
<p>The invention pertains to a printing form and a process for preparing it from a curable composition that includes an epoxy resin and an amine curing agent selected from primary amines and secondary amines. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer, and engraving to form at least one cell in the cured layer. Preheating the substrate to a surface temperature greater than 40C and less than about 80C results in improved surface characteristics of the printing for, such as reduction of amine blush, elimination of bubbles, and lessened surface roughness, while not accelerating the curing rate or evaporation of volatile components to an undesirable degree. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.</p> |
