Process of making reinforced flat cable terminations

Abstract

Abstract THE DISCLOSURE IS A METHOD OF MAKING REINFORCED CIRCUITRY TERMINATIONS IN FLEXIBLE COPPER FOIL CIRCUITS WHEREIN REINFORCING MATERIAL, SUCH AS EXPOXY GLASS, IS APPLIED TO EACH SIDE OF THE FLEXIBLE CIRCUITRY TERMINATION AND A THIN LAYER OF METAL IS BONDED ON THE LAYER OF REINFORCING MATERIAL. HOLES ARE THEN PUNCHED OR DRILLED THROUGH THE LAYERS AND THE FLEXIBLE CIRCUITRY. THE HOLES ARE THEN METAL PLATED BY AN ELECTROLESS PROCESS OR A COMBINATION OR ELECTROLESS AND ELECTROPLATING. THE HOLES AND SELECT AREAS AROUND THE HOLES ARE THEN PLATED WITH GOLD OR OTHER ACID RESIST MATERIAL TO PROVIDE AN ETCH RESISTANT SURFACE. THE FIRST METAL CLAD COATING IS ETCHED OFF. THE REINFORCING MATERIAL IS THEN PATTERN ETCHED TO PROVIDE A REINFORCED CIRCUIT TERMINATION WHICH IS FLEXIBLE BETWEEN TERMINATIONS.

Inventors

• 👤 Joseph M Shaheen

Bibliographic Details