| abstract |
A surface protective film including a substrate film having formed on one surface thereof a coating film selected from the group consisting of (1) a coating film of a nonionic surfactant having a hydrophilic-lipophilic balance (HLB) of 13 or more, (2) a coating film of a surfactant comprising an ammonium salt of a fluorine based phosphoric acid ester, (3) a coating film of dimethyl silicone oil, and (4) a coating film of a mixture of a water-soluble urethane resin and dimethyl silicone. The surface protective film including a substrate film having a specific coating film formed on the outermost surface thereof is excellent in antistaining property and ink adhesiveness. The substrate film preferably comprises a thermoplastic resin. The pressure-sensitive adhesive is preferably, for example, acrylic, urethane based, rubber based, or silicone based pressure-sensitive adhesives. Pressure-sensitive adhesives having high transparency are preferable, and acrylic pressure-sensitive adhesives are preferable from the standpoint of easiness of pressure-sensitive adhesive characteristics. Since the surface protective film is excellent in antistaining property and ink adhesiveness, it can be suitably used for surface protection of polarizing plates, liquid crystal displays, plasma displays, etc. |