| 摘要 |
PROBLEM TO BE SOLVED: To easily crush a container when it is empty and to improve efficiency for conveyance and transportation caused by decrease in vol. by forming at least a part of a trunk part thin in the container with a neck part with a small diameter and provided with a spiral projection on the wall of the trunk part. SOLUTION: When the titled container is practiced in use for a toner bottle as a powder storing container, the whole trunk part 11 of the toner bottle is made thin, e.g. to a thickness of 0.1-0.4 mm and an outlet part 12 and a spiral projection 13 are provided. To this trunk part 11 with a thin thickness, other parts, e.g. the top wall, the neck part and the bottom wall (the bottom part) have a thickness of approximately 1 mm. In another way, thickness of a part (p) of the trunk part 11 is made thin. These toner bottle can be easily crushed by pressure, but for the bottle wherein thickness of a part (p) of the trunk part 11 is made thin, stroke during extrusion can be especially shortened. In addition, a relation of h>m is given between height (h) and width (length of the bottom part) (m) of the spiral projection 13 to make it possible to crush it by a small force. |
