| 摘要 |
PURPOSE:A cavity to hold an adhesive is formed to the side edge of the main body or a box or to the joining face of the side edge of a panel plate, a protrusion is attached to the other joining face and the protrusion is inserted into the cavity to effect the bonding of a box preventing the staining of the unnecessary part with the adhesive. CONSTITUTION:The side edge of a panel plate is made to contact with the reverse side of the side edge of the main body of a box and fixed with an adhesive. In the above process, a cavity 11 to hold the adhesive is formed either of the joining faces of the side edge 2a of the main body 1 or the side edge 4a of the panel plate 4, and a protrusion 12 is attached to the other joining face opposite to the cavity 11. The protrusion 12 is inserted into the cavity 11. The adhesive in the cavity 11 is pushed out of the cavity and spread over the whole joining surface to enable the bonding of the objective box.
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