PRODUCTION OF PREPREG AND PRODUCTION OF METAL FOIL-CLAD LAMINATE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a prepreg hardly causing occurrence of projection in the prepreg and a method for producing a metal foil-clad laminate free from occurrence of crease. SOLUTION: This method for producing a prepreg comprises feeding a substrate 2 comprising glass cloth into a resin liquid 1, interposing and pressing the surface and the rear face of the substrate between a pair of clamping rolls 4 and 4 provided in a resin liquid 1, passing the substrate through a pair of fastening rolls 3 and 3 to control impregnated amount of the resin liquid 1, heating a substrate impregnated with resin by a dryer 5 and semi-curing the impregnated resin. Since impregnated amount is controlled after air attached to the interior of the substrate is driven out of the substrate 2, the method can minimize the size of the projection. This method for producing a metal foil-clad laminate comprises laminating prepreg to afford a laminate and heating a body to be pressed, in which a metal foil is arranged on the outermost layer of the laminate under pressure.