excessive harzfilm with improved offset printability

摘要

PURPOSE:To obtain the subject film resistant to curling, having excellent printability and useful for printing, etc., by coating both surfaces of a specific substrate layer with layers capable of preventing the impregnation of solvent of an offset printing ink and applying a coating layer on the surface of the solvent-impregnation preventing layer. CONSTITUTION:A solvent-impregnation preventing layer composed of at least one kind of resin selected from crosslinked PVA, acrylonitrile copolymer having an acrylonitrile content of 20-55wt.%, acrylamide copolymer having an acrylamide content of 35-98wt.%, polyvinylidene chloride and polyvinylidene fluoride is applied to both surfaces of a film-substrate made of a polyolefin resin (e.g. polyethylene) to prevent the impregnation of a solvent (e.g. high- boiling petroleum solvent) of an offset printing ink. A coating layer is applied to each preventing layer to obtain the objective film.