| 摘要 |
PROBLEM TO BE SOLVED: To prevent an unsealing by a wrong operation from generating, and facilitate a required unsealing by a method wherein the bonding force of a plastic layer on the internal surface of a container, which separates and defines the container into large and small chambers, is made larger than the bonding force which laminates an internal surface layer and an external surface layer. SOLUTION: A tab is provided at a location which is close to a bonded part 6 on the external surface of a small capacity chamber, and at the bonded part 6, a sealed part 11 is formed on an internal surface layer 9, and both parts are bonded by heat-sealing to each other. On the internal surface layer 9, an external surface layer 8 is laminated, and is bonded at a bonding part 12. On the internal surface side of a large capacity chamber, a cut 4 which reaches the bonded part with the external surface layer, is provided, and a cut 5 is provided in the vicinity of the bonded part 6 on the internal surface of the small capacity chamber in the same manner. In this case, the bonding force between the internal layer and the external layer is set to be larger than the bonding force of the bonded part 6. By applying a pressure to the small capacity chamber, and applying a separating force between the internal and external layers by pulling the tab, a delamination is made to generate, and when the delamination reaches the cut 4 of the large capacity chamber, a communicating path is formed between the internal and external layers, and thus, contents in both chambers are mixed. |
