| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging bag for microwave ovens having a venting seal part with a weakening part with no increase in cost, which prevents an interfacial peeling of a plastic laminated film composing the packaging bag from being produced at the venting seal part. <P>SOLUTION: The packaging bag for microwave ovens, which is sealed by a heat-sealing of the plastic laminated film, is provided with at least one venting seal connected to the circumferential edge seal part of the packaging bag, wherein the venting seal part comprises an outside seal part, a buffering part adjacent to the outside seal part and the weakening part provided in the buffering part and the sealing strength at the circumferential edge seal part of the packaging bag and the outside seal part of the venting seal part is 2.3 kg/15 mm or more. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
