Abstract: Disclosed herein is an apparatus for press-bonding a tape onto each of side faces of a workpiece. The apparatus basically comprises a tape press-bonding mechanism and a trimming mechanism both displaceable in the directions indicated by the arrows X, Y and Z. The former mechanism includes a pressure roller for press-bonding the tape onto the side faces of the workpiece with recesses defined therein, an actuator for displacing the pressure roller toward each of the side faces, a block member for supporting the pressure roller thereon, and a device for displacing the block member through a desired angle.