| 摘要 |
PURPOSE:To make it easy to open the mouth by forming a cut in the middle of the top part of a paper-made pack that has its center at a position within a specific distance from the center of the pack toward the opening ends, has the shape of a semicircle, a rectangle, a slot, or the like, and has a depth and a breadth within specific values. CONSTITUTION:A cut is formed in the middle of the top part of a paper-made pack. The center of the cut is positioned within a distance of approximately 5mm from the center of the pack toward the opening ends. The cut is formed in the shape of a semicircle, a rectangle, a slot, or the like and to a depth not exceeding several millimeters and to a breadth not exceeding 1cm. To open the pack, the parts 4, 5 are pulled apart; then by pulling the parts l, 2 apart a space bounded by points l, 2, 7, and 6 can be opened; by pulling this space to the front a mouth can be opened in the pack in a simple manner. |
