| 摘要 |
PROBLEM TO BE SOLVED: To align a section located in a container body top position in a fold part of a side of a side face plate with a section located in the container body top position in a fold part of a side of a second side face plate, without generating a micro through hole at a first gathering point and preventing the molten content from being leaked to the outside of the container from the through hole, by properly folding them between a fold-in joint sheet and a second fold-in joint sheet in a blank.SOLUTION: A single ruled line 19 which protrudes on the inner surface side of a container of a blank is formed at a fold position to be mountain-folded between two fold-in joint sheets 121, 141. A fold part 18 between the two fold-in joint sheets 121, 141 is folded at a single ruled line 19. |
