PURPOSE: To continuously obtain a copper clad laminated sheet excellent in characteristics by bonding copper foil of which the single surface is coated with a solventless curable epoxy resin compsn. to a glass base material to form a prepreg and integrally bonding the surface of the glass base material of a separately produced prepreg to the glass base material of the obtained prepreg under pressure to obtain a laminate having copper foils on both surfaces thereof and subjecting the laminate to press bonding by a heating roll.

CONSTITUTION: A predetermined amt. of a solventless curable epoxy resin compsn. (solventless varnish) 3 is applied to the copper foil 2 supplied from a reel 1 and the coated copper foil is bonded to the glass fabric 5 supplied from a reel 4 under pressure by a press bonding roll 6 to obtain a prepreg A having the glass base material bonded to the single surface thereof. Separately, solventless varnish 13 having the same compsn. as the solventless varnish 3 is applied to copper foil 2 supplied from a reel 11 at the speed equal to that of the foil 2 and the coated foil is bonded to the glass fabric 15 from a reel 14 under pressure by a press bonding roll 16 to obtain a prepreg B having the glass base material bonded to the single surface thereof. The prepregs A, B are laminated by press bonding rolls 7 so that the glass base materials of them are opposed to each other to be preheated in a preheating oven 8 and integrated under heating and pressure by three-stage heating rolls 9.