Engravable surface coatings, specially for printing rolls, coating process and pieces produced according to this process.

摘要

Engravable coating compositions, especially for printing rolls, which comprise at least one resin capable of coking and producing only a very small proportion of liquid products at the temperature at which it decomposes, the chief products of its decomposition being, at this temperature, solid or gaseous; - and generally a reinforcing particulate filler exhibiting a small proportion of ridges exhibiting acute projecting angles, the said filler generally representing a proportion of 5 to 75 % of the resin + filler volume. The process for coating the rolls comprises: - mixing the resin and the filler and degassing the mixture obtained; - actual coating and drying of the successive layer or layers deposited; and - baking of the coating. he