Production of non-tacky, smooth surfaces of photopolymer...

Details Production of non-tacky, smooth surfaces of photopolymer... Production of non-tacky, smooth surfaces of photopolymer...

G - Physics

03

F

96/251

G03F 7/26 (2006.01) G03F 7/40 (2006.01)

Patent

CA 1272061

Abstract of the Disclosure: Non-tacky, smooth, struc- tureless surfaces of photopolymer relief printing plates for flexographic printing, whose relief layers are pre- pared in a conventional manner by exposing the photopoly- merizable relief-forming layers of flexographic printing plates imagewise to actinic light and washing out the unpolymerized, unexposed areas with a suitable solvent, are produced by a process in which the flexographic print- ing plates are after-treated with a liquid medium which contains elemental bromine or is capable of forming ele- mental bromine, and then washed with a neutralization bath, one or more paraffinsulfonates, fatty alcohol ether- sulfates or alkyl phosphates or a cationic or anionic sur- factant possessing one or more perfluorinated carbon chains being employed in the bromine-containing, liquid medium. The relief printing plates obtained according to the invention are used for flexographic printing.

511473

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