Process for producing double-sided flexible printed board and double-sided flexible printed board

摘要

& challenge & To provide sufficient heat resistance, flame resistance, a method of manufacturing a double-sided flexible substrate having an adhesive excessive production process is simple and does not require complex equipment. ; & solving means & General Formula (1) an aromatic polyamide resin represented by epoxy resin and a step of applying a varnish containing an organic solvent directly to the metal foil, the solvent was removed, and the installation process the resin layer, and bonding a metal foil on the resin layer side by method of a curing process sided flexible printed circuit board: ; (1) ; from expression, ; m, n is m + n is an integer of 2 to 200 as a mean value, n is an integer more than 0.1, ; Ar ¹ , Ar ³ is an aromatic group of the teeth, Ar ² of teeth having a phenolic hydroxyl group Im aromatic residues. ; a metallic foil, the double-sided flexible printed circuit board, an epoxy resin, an organic solvent, the aromatic polyamide resin