Precurled flexographic printing plate

Details Precurled flexographic printing plate Precurled flexographic printing plate

G - Physics

03

F

101/119

G03F 7/00 (2006.01) B41C 1/18 (2006.01) G03F 7/20 (2006.01)

Patent

CA 1218898

TITLE PRECURLED FLEXOGRAPHIC PRINTING PLATE ABSTRACT OF THE INVENTION A permanent curl is provided in flexographic printing plates comprising a flexible sheet support and a photosensitive layer of a photopolymerizable elastomeric composition having a dry thickness of about 0.005 to 0.250 inch wherein after liquid development the printing plate is dried, 20 to 80°C for at least 0.25 hour, and is postexposed by overall actinic radiation exposure for 1 to 30 minutes, at least the postexposure occurring while the printing plate is present on a curved surface, e.g., a printing cylinder. The process is useful for rubber- and block copolymer-containing printing plates.

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