| 摘要 |
PROBLEM TO BE SOLVED: To provide a bag for tightly packaging contents having fluidity such as drinkables wherein after the bag is unsealed, even if one drinks the contents directly from the opening of the bag or transfers the contents to another container, the external surface of the bag can be prevented from being contaminated, and hence the bag can be sanitarily used. SOLUTION: The bag 100 can take a three-way sealed form, four-way sealed form or a self-supporting form, and the upper parts of a front and rear wall surface films are folded outwards in a downward direction at a first folded back part 2 to provide a proper folded back surface of proper length, and then folded back again outwards in an upward direction at a second folded back part 3. The upper parts of the films are extended to a location higher than the part 2 to form an inner wall 4 inside the upper part of the bag, while an unsealing means (notch 10 and weakening line 9) is provided at a location lower than the part 2. Further, notches 5, 5 are provided at the left and right corners of the inner wall 4, and the inner sides thereof are sealed by heat-sealed parts 6, 6 so that the unsealing means passes across the parts 5, 5.
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