Printing device for scored or corrugated cardboard sheets comprises printing plate incorporating bands or strips of lesser hardness than rest of plate in correlation with scores of cardboard sheet

摘要

A printing device designed for scored cardboard sheets comprises a printing plate incorporating, in correlation with the longitudinal and cross-sectional scores of the cardboard sheet, bands or strips of lesser hardness than the rest of the plate. A printing device designed for scored cardboard sheets, specifically for the printing of corrugated cardboard sheets where the longitudinal and cross-sectional edges are uneven after slitting in the corrugator machine comprises a polyester base (7) that supports a printing plate (8) through a base of photopolymer resins. The printing plate incorporates, in correlation with the longitudinal scores and cross-sectional ones of the cardboard sheet, bands or strips of lesser hardness than the rest of the plate. The hardness of various areas (9, 10) and of the plate is less than 24[deg] Shore A. This hardness depends on the characteristics of the paper, cardboard, the types of scores to be printed, the image and the design of the printing.