| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve shape retention and strength of a paper container, by providing a recessed string extending over a full length of a beam in the paper container comprising a bottom wall and a side wall integrally molded and the bead provided along an outer periphery of an opening. SOLUTION: A paper container 10 comprises a bottom wall 11 and a side wall 12 integrally formed and bent from its peripheral rim, while a bead 14 is provided along a peripheral rim of a flange 13 provided along an outer periphery of an upper end opening of the side wall 12. In addition, ribs 12a, 12b for absorbing and shaping wrinkles at the time of molding are radially provided on the side wall 12, wherein the rib 12a is extended from the flange 13 to the vicinity of the bottom wall 11, while the rib 12b is shorter than 12a and terminated in the middle of the side wall 12. A recessed string 14a is formed over a full length in a lengthwise direction on the bead 14, while an emboss 15 protruding out of the container 10 is provided over a bent part where the bottom wall 11 and the side wall 12 are connected, and an emboss 16 protruding inward in the container 10 is provided on a bent part between the flange 13 and the side wall 12.</p> |
