INTERCONNECTING FLEXIBLE PRINTED BOARDS

摘要

The invention relates to a method for interconnecting flexible printed boards (1). To this end, electroconductive layers (2, 3) that are disposed on two opposite sides are conductively interconnected by piercing a hole into the printed board (1) with a simple burring tool (10), thereby producing a through-hole (4), and then injecting a defined amount of a conductive adhesive (5) into said through-hole (4) by means of a dosing needle (20). During piercing, the material of the printed board is stretched to such an extent that on the through-hole (4), on the side of the printed board (1), a funnel-shaped recess (7), and on the opposite side an elevated bulge (6) is produced. The conductive adhesive (5) filling the through-hole (4) is fed from the bulge side and wets the surface of the bulge (6) and the surface of the funnel-shaped recess (7).