NOVEL COMPOSITE FOIL, PROCESS FOR PRODUCING THE SAME AND COPPER-CLAD LAMINATE

摘要

A COMPOSITE FOIL (21) COMPRISING A CONDUCTIVE CARRIER (22), AN ORGANIC RELEASE LAYER (23) COATING A SURFACE OF THE CONDUCTIVE CARRIER (22), AND A CONDUCTIVE PARTICLE LAYER (24) FORMED ON THE ORGANIC RELEASE LAYER (23). A PROCESS FOR PRODUCING A COMPOSITE FOIL (21), COMPRISING THE STEPS OF FORMING AN ORGANIC RELEASE LAYER (23) ON A SURFACE OF A CONDUCTIVE CARRIER (22), AND ELECTRODEPOSITING A CONDUCTIVE PARTICLE LAYER (24) ON THE ORGANIC RELEASE LAYER (23).A COPPER-CLAD LAMINATE COMPRISING THE ABOVE COMPOSITE FOIL (21) LAMINATED TO A BASE MATERIAL (31). A COPPERCLAD LAMINATE COMPRISING THE ABOVE COMPOSITE FOIL (21) LAMINATED TO A BASE MATERIAL, HAVING ONLY THE CONDUCTIVE CARRIER (22) REMOVED THEREFROM. THUS, THERE ARE PROVIDED A COMPOSITE FOIL (21) FOR PRINTED WIRING BOARD PRODUCTION FROM WHICH A COPPER-CLAD LAMINATE ENABLING LASER PERFORATING WITHOUT FORMING BURRS EVEN AT LOWER LASER POWER AND FURTHER ENABLING FORMING FINE-PITCH WIRING PATTERNS (33) CAN BE PRODUCED,A PROCESS FOR PRODUCING THE COMPOSITE FOIL (21) AND A COPPER-CLAD LAMINATE PRODUCED THEREFROM.(FIG 2)