PROBLEM TO BE SOLVED: To achieve good usability reducing the remaining amount of liquid.SOLUTION: A nozzle 21 is raised at the top of a body portion 10 having a substantially triangular shape when viewed from the front side, the body portion 10 is divided into a symmetrical right and left side portions 12 and 12 and a bottom portion 13 through first folding lines 11 upwardly foldable, and the side portions 12 are vertically divided through second folding lines 14 and 14 downwardly foldable.COPYRIGHT: (C)2013,JPO&INPIT【課題】残液量を少なくして良好な使い勝手を実現する。【解決手段】正面視略三角形状の胴部10の頂部にノズル21を立設し、胴部10は、山折りに折畳み可能な第1の折目11を介して左右対称の側部12、12と底部13とに区分するとともに、谷折りに折畳み可能な第2の折目14、14を介して各側部12を上下に区分する。【選択図】図1