| 摘要 |
A surface-protective film and method for producing the same, more specifically a surface-protective film which itself has excellent surface flatness/smoothness, because it can be easily released from an adhesive silicone rubber layer which it protects, contains no residual solvent which may aversely affect adhesiveness of the adhesive silicone rubber layer to a semiconductor chip and semiconductor chip mounting, and has no adverse effect on surface flatness of the adhesive silicone rubber layer, and a method for producing the same. The surface-protective film, laminated at least on one side with a polysulfone-based resin layer (B) of polysulfone-based resin composition, is to protect the adhesive silicone rubber layer (C), and is formed by a polysulfone-based resin solution composition of at least one type of polysulfone resin dissolved in a mixed solvent comprising 3 or 4 specific components.
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