| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for allowing a user to easily grasp a remaining volume of contents contained in a double aerosol device.SOLUTION: An inner bag 16 includes a bottom part 161 that has a circular shape in plan view, a cylindrical trunk part 162, and a head part 163 continuing upward from the trunk part 162, and they are integrally formed. On an underside of the bottom part 161, a plate-shaped burr 164 resulted from blow molding extends along a diameter direction of the bottom part 161. In addition, two grooves 165 are formed on the trunk part 162 along a longitudinal direction (axial direction), in which each of the grooves has a shape that is concaved on the outer surface side of the trunk part 162 and convexed on the inner surface side of the trunk part 162. The groves 165 allow the trunk part 162 to be crashed in accordance with a constant regularity. A remaining volume in the inner bag 16 can be grasped through a transparent outer container. |
