COUPLED PAPER BOXES WITH HEAVY CONTENT CONTAINED

PURPOSE:To securely couple a plurality of boxes and easily separate them at the time of use by a method wherein boxes are lightly joined so that they can be easily separated by applying paste linearly or by spots on respective opposite faces of boxes. CONSTITUTION:When a coupled body of paper boxes is to be manufactured, side flaps 2, 2 are folded as inner flaps while flaps 3, 3 on a gable side 4 are folded as outer flaps and the inner flaps and the outer flaps are adhered to form a paper box 1. For example three pieces of the folded boxes 1 are placed so that the respective inner flaps 2, 2 are adjacent and parallel to one another. According to the weight of contents, paste 6, 6 is applied linearly or by spots in the vicinity of one end of an upper or lower part of the respective opposite faces or on both ends, and the boxes are lightly coupled so that the respective boxes 1, 1 can be easily separated. By adhering a coupling cardboard 5 to a slit between the outer flaps, the outer flaps of the boxes 1, 1 are adhered and fixed. The width of the coupling cardboard 5 is formed to width equal to or less than the slit between the outer flaps of the box 1. Therefore, after the coupled body is separated into individual boxes 1, 1, the respective boxes 1, 1 can be easily opened along flap opening lines.