To bind rectangular articles such as a stack of corrugated fiberboard sheets with binding force not causing deformation and damage.

With a leading edge of a binding tape 21 fed from an upper part of a belt conveyer 12 kept on a binding tape chuck 25 immediately below it, the stack 10 of the corrugated fiberboard sheets is conveyed to a binding position. While feeding the binding tape by the pressing by the front face of the stack at this time, the tape is wound over the lower face and the front face. In addition, after the tape is made to extend from over the upper surface onto the rear part, the tape extending above the rear part is pushed down while being fed. The tape is wound over the upper surface and the rear face of the stack, and overlaid on the tape extending from the lower end of the rear face to the binding tape chuck. Then, the middle of the overlaid tapes is cut to separate both ends of the tape which is binding. With both ends hanging on an extension of the rear face of the stack, they are folded onto a part immediately below the lower surface, and stuck to the already wound parts on the lower surface via an adhesive tape 53.