| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent generation of any defective forming by providing a curved folding line to connect edges of a top part of a front panel and a rear panel from a center portion of an upper end of top portions of right and left side panels in a blank for a paper container in which an inclined surface is provided on the front panel side of the top portion, and the top portion is flat. SOLUTION: In a paper container blank, a seal panel 11, a left side panel 12, a front panel 13, a right side panel 14 and a rear panel 15 are successively and continuously provided parallel to each other through a folding line a, an upper seal portion 16 is demarcated in the panels 11-15 by a folding line b in the vicinity of an upper end of each panel, and folding lines f, g are provided at the center of the upper seal part of the side panels 12, 14 so that the upper seal portion is divided into two. Folding lines h, i from ends of the folding lines f, g to right and left ends of a folding line c provided on the front panel 13 are of the curved shape bulged inward of the side panels 12, 14. Curved folding lines j, k are formed from the folding lines f, g to folding lines e, d of the seal panel.</p> |
