| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging bag which is safely heated by a microwave oven after it is unsealed once and a food material or the like is fed thereinto. <P>SOLUTION: The packaging bag is formed by integrally joining the four ends of a front face member 6 and a back face member 4, and has an unsealing part 2 for opening and a second zipper member 11 for engaging with a first zipper member 9 and openingly/closingly resealing an opening at the inner face of the front face member 6. The packaging bag is provided with a resealing part 7 having the upper end joined to the upper side of the unsealing part 2 of the inner face of the front face member 6 over a width direction and a ventilation hole 15 between the joining part of the resealing part 7 and the second zipper member 11. The unsealing part 2 is formed to be projected from the outer face side of the front face member 6 by integrally joining two or more folding parts 2A, 2A which are made of the partially folded front face member 6. <P>COPYRIGHT: (C)2009,JPO&INPIT |
