| 摘要 |
PURPOSE:To improve sealing performance and to prevent power from scattering when sealing material is peeled off and a container from being damaged by forming the longitudinal end part of an adhering part provided on the entire circumference of an opening part for passing powder in the form of an arc. CONSTITUTION:Almost the rectangular opening part 20 is provided in the peripheral longitudinal direction of a powder containing part 11, and the adhering part 30 is provided on the entire circumference of the opening part 20. By bonding the film-shaped sealing member 40 through the adhering part 30, the containing part 11 is hermetically sealed. A semi-circular, arc-shaped part 31 is formed on the circumference of the adhering part 30 enclosing the opening part 20. When the sealing member 40 is peeled off, it starts at a peeling start point A in the arc-shaped part 31 of the adhering part 30 and is peeled off longitudinally along the circumference of the arc-shaped part 31 under almost uniform peeling resistance. Thus, sealing performance can be improved, and the scattering of powder when the member is sealed and the damage of the container can be prevented. |
