| abstract |
It is an object of the present invention, in particular, to provide a high-quality biaxially oriented film having excellent electronic conversion characteristics, running durability, running property of a magnetic head, and the like for a magnetic recording medium.n n n An object of the present invention is composed of a polymer solid solution containing polyester (polymer 1) and a thermoplastic resin (polymer 2) other than polyester as an essential component, and having a protrusion having a protrusion height of 2 to 50 nm on at least one surface thereof. A biaxially oriented film is characterized by having 10,000 to 90 million pieces / mm 2. |