RESIN COMPOSITION FOR LASER ENGRAVING, MANUFACTURING METHOD OF FLEXOGRAPHIC PRINTING PLATE ORIGINAL PLATE FOR LASER ENGRAVING, FLEXOGRAPHIC PRINTING PLATE ORIGINAL PLATE, PLATEMAKING METHOD OF FLEXOGRAPHIC PRINTING PLATE AND FLEXOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a resin composition for laser engraving which allows excellent rinsing property of engraving residue generated by laser engraving and excellent ink resistance to various inks on a plate; a flexographic printing plate original plate for laser engraving which uses the resin composition for laser engraving and a manufacturing method thereof; and a flexographic printing plate and a platemaking method thereof.SOLUTION: A resin composition for laser engraving contains (Component A) a resin which is a plastomer at 20°C, (Component B) a polymerizable compound and (Component C) a polymerization initiator, where Component A has a constituent repeating unit having an acid group and the content of the constituent repeating unit having an acid group is 0.01 to 15 mass% relative to the total mass of Component A.