| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vessel having a constant transverse section in which the transverse sectional area is increased toward an opening edge so as to be stacked. <P>SOLUTION: In the vessel 100 having a bottom part 101 and a side wall 102, and the transverse sectional area is increased toward the opening edge 106, a first fold 103 and a second fold 104 are formed on the side wall 102, and the transverse sectional area of the side wall 102 is kept unchanged from the bottom part 101 to the opening edge 106 by folding the folds 103 and 104. <P>COPYRIGHT: (C)2003,JPO |
