| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging bag having a vapor purging function, which does not burst even if a content closes a vapor purging port, and a package using the packaging bag. <P>SOLUTION: This packaging bag (10) is made of a synthetic resin film, and has respective sealed sections on both side edge parts and the bottom edge part. Also, the bottom edge part is constituted in such a manner that a bottom sealed part (12) may be formed by inserting an easily peelable film (3) between the confronted synthetic resin films in such a manner that the end edge may protrude to the internal side of the bag. For the bottom sealed part, a retracted sealed part (13) having a narrower width for which a sealed part is retracted into an arc shape at the approximately central part is formed, and made a vapor purging port (13). At the same time, an island-like seal (15) of which the surrounding becomes an unsealed part (14) is formed in an area between the retracted sealed part having the narrower width and the end edge of the packaging bag. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
