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Flexographic printing cylinders and sleeves with cylindrical, seamless photopolymer printing layer, photopolymer composition therefor, and method of making said cylinders and sleeves from said composition
Flexographic printing cylinders and sleeves with cylindrical, seamless photopolymer printing layer, photopolymer composition therefor, and method of making said cylinders and sleeves from said composition
A liquid photopolymer composition having a predefined viscosity in the range of 25 to 35 centipoises such that it can be sprayed onto a rotating cylindrical core to form a seamless, cylindrical surface in the range of 60 to 70 Shore A hardness suitable for imaging the printing matrices of a flexographic printing sleeve, the composition comprising: a photopolymer of Shore D hardness in the range of 50 to 70; a carrier solvent; a grafted monomer to reduce the hardness to a range of 60 to 70 Shore A; and at least one of the following materials: monomers, photoinitiators, and photosensitizers. IMAGE
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