| abstract |
(57) [Summary] [Problem] To provide a prepreg without release paper. SOLUTION: A paper-free prepreg is formed by adhering a thermoplastic resin film to one surface of a reinforcing fiber matrix layer obtained by impregnating a reinforcing fiber with an uncured matrix resin. The thermoplastic resin film is preferably a nylon 12 film, an ionomer film, a polyethylene terephthalate film having both surfaces subjected to corona discharge treatment, or a polybutylene terephthalate film having both surfaces subjected to corona discharge treatment. |