| 摘要 |
PROBLEM TO BE SOLVED: To provide a protective film for a prepreg having excellent heat resistance to heating or extension generated at a prepreg molding time and also having flatness without roughing a surface of the prepreg. SOLUTION: The protective film for the prepreg comprises a polyethylene terephthalate film, and a release layer formed on at least one side surface of the film. In this case, a melt viscosity of the film is at least 560Pa.s and a centerline mean surface roughness (Ra) is in a range of as high as 2 to 50 nm. |
