METHOD FOR MASS PRODUCING TAPE TYPE FLEXIBLE PRINTED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a method for mass producing a tape type flexible printed circuit while reducing the production cost. SOLUTION: A copper film and a dry film are pressed continuously to a flexible insulating film 20 through interlocked reel-to-reel operation. The copper foil becomes a metal line by etching. The flexible insulating film 20 is applied continuously with a cover film and subjected to surface treatment. A plurality of sprocket holes 61 are punched through the flexible insulating film 20. The flexible insulating film 20 is then cut along a plurality of parallel lines 23 arranged with the sprocket holes 61 to produce a plurality of narrow flexible circuit tapes 60. The flexible circuit tape 60 has tape type flexible printed circuits 62 between the plurality of sprocket holes 61 on the opposite sides. COPYRIGHT: (C)2004,JPO