Pour-resistant easy-to-lead-free resin film, and laminated film for packaging material using the same

摘要

It is an object of the present invention to provide a resin film having ease of tearing. And a second resin having a difference between an SP value of the polyethylene terephthalate resin and a SP value of the polyethylene terephthalate resin of 1.1 to 4.0 (cal / cm ³ ) ^0.5 . The tear-resistant easy-to-lead-free resin film 10 is laminated on the inner layer film 20 to be a heat-sealing surface and a surface layer film 30 made of an isophthalic acid-modified polyethylene terephthalate resin having a copolymerization ratio of isophthalic acid component of 0 to 5 mol% The laminated film for a packaging material 1B according to the present invention is provided.