Protective film, optical film, laminate, polarizing plate, image display device, and manufacturing method of polarizing plate

摘要

According to one aspect of the present invention, the protective film 20 is a base-less protective film 20 used for a polarizing plate, and is provided on a core layer 21 containing a resin made of a cured product and one surface 21A of the core layer 21. An adhesive improvement layer 22, the surface 22 A of the adhesive improvement layer 22 forms one surface 20 A of the protective film 20, the thickness of the protective film 20 is less than 40 μm, and the tensile breaking strength of the protective film 20 is The protective film 20 which is 30 N / mm 2 or more is provided.