| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a side wall from falling outward owing to moisture, etc., and to prevent a container main body from becoming out of shape. SOLUTION: A container main body 11 formed in a circular cup shape comprises a circular bottom wall 12 and a side wall extending diagonally upward from the peripheral edge of the bottom wall 12. The side wall 13 is formed with many pleats 14 extending in a height direction. The pleats 14 are formed in a flat waveform, and the upper part they are, the wider the pleats are. On the peripheral edge of the bottom wall 12, V shaped ribs 15 having a V shape cross section and extending along the peripheral edge are formed throughout the peripheral edge. The container main body 11 is made of one thin sheet shape paper, and by press processing it is formed in a cup shape with the pleats 14 and the V shape ribs 15.</p> |
