| 摘要 |
A laminated polyethylene 2,6-naphthalate film having a polyethylene 2,6-naphthalate film and a coating layer which is formed on at least one surface of the polyethylene 2,6-naphthalate film and comprises at least one water-soluble or dispersible resin selected from the group consisting of polyesters, polyurethanes and polyacrylic resins, and satisfying the following properties: (1) an F5 value in a machine direction of at least 1.5 x 108 Pa, (2) a Young's modulus in a machine direction of at least 5.9 x 109 Pa, (3) a Young's modulus in a transverse direction of at least 5.9 x 109 Pa, and (4) a surface roughness Ra of the coating layer of not larger than 0.020 .mu.m, which laminated film is suitable as a base film of a magnetic recording medium.
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