Precurled flexographic printing plate

Details Precurled flexographic printing plate Precurled flexographic printing plate

1982-09-27

1984-10-23

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430286, 430288, 430300, 430302, 430328, 430329, 1014011, G03F 700

Patent

active

044789319

ABSTRACT:
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.degree. to 80.degree. 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.

REFERENCES:
patent: 4177074 (1979-12-01), Proskow
patent: 4298680 (1981-11-01), Bruno
patent: 4323637 (1982-04-01), Chen et al.
patent: 4381961 (1983-05-01), van der Velden

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