| 摘要 |
<p>A sealed bag (1) in which its non-return action can be improved, and which can be manufactured at a low cost and can seal the sealable section (2) in airtight state. Bypass seals (31) to which bag sheets (11, 12) are adhered are so provided on the upper and lower sides of a ventilation passage (3) for permitting the sealable section (2) to communicate with the outside of the bag as to transverse a part of the ventilation passage (3). The lower end (31a1) of the upper bypass seal (31a) and the upper end (31b1) of the lower bypass seal (31b) are arranged on a straight line.</p> |
