Patent ID: 6089448
Filing Date: 2000-07-18
Classification: B65D

Abstract:
A box-shaped packing case comprising an overlap portion at which a third folding plate folded from a first folding direction is adhesively attached onto and overlaid on first and second folding plates folded from two directions different from the first folding direction of the third folding plate, so that boundary portions of the first and second folding plates are not overlapped with each other, characterized in that a shape of the boundary portions between said first and second folding plates when said first and second folding plates are folded is selected so that a length of an adhesion area at which said third folding plate is adhered approaches a length of said third folding plate, wherein the shape of the boundary portion between said first and second folding plates if formed by:one slant line extending obliquely from an intersection point between folding lines of said first and second folding plates, andthree straight lines which are linked to the slant line, parallel to any one of the folding lines and linked to one another, so as to be bent in a stepped shape as a whole.