To bond areas relative to a blank to each other by a method wherein adhesive-applied parts are arranged at intervals in the longitudinal direction at a side tab, and turn-up tabs for a bottom wall are bonded together with a rectangular adhesive-applied part and the adhesive applied part is extended in the longitudinal direction of the bottom wall.

A blank 12 for operation of bonding assembly has adhesive- applied parts. Side tabs 19 that become the inside when being folded up are provided in parallel with each other, and side adhesive-applied parts 27 each in a square shape are provided, extending all over the length of the side tab 19. The adhesive-applied parts 27 function for bonding the side tab 19 to the side tab 18. A rectangular adhesive-applied part 28 is provided at an area of a longitudinal tab 21 at the inside for bonding turn-up tabs together for a bottom wall 17. The bottom adhesive applied parts are brought into contact for bonding the longitudinal tab 21 to the longitudinal tab 20, and thereby the bottom wall 17 is fixed as a whole. Thereby, the side tabs 18 and 19 and the longitudinal tabs 20 and 21 are bonded together by adhesion.