Process for the post-treatment of developed relief printing form

Details Process for the post-treatment of developed relief printing form Process for the post-treatment of developed relief printing form

1988-12-06

1990-03-06

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430300, 430302, 430306, 430281, G03F 702

Patent

active

049065513

ABSTRACT:
The invention describes a process for the post-treatment of developed relief printing forms for use in flexographic printing. The relief printing forms are reexposed in a customary manner and thereafter treated according to the invention, using a solution which comprises an organic solvent and, dissolved therein, an aryl- or hetaryl-bis(trihalogenomethyl)-s-triazine; they are then dried and briefly reexposed to UV light. The process of the invention eliminates the tackiness of the surfaces of light-hardened flexographic printing forms comprising a photopolymer and it also considerably enhances the resistance of these printing forms to air containing ozone.

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"Bis-", Hawleys Condensed Chemical Dictionary, 11th edition, Van Nostrand Reinhold Co., NY., N.Y., p. 143.

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