| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plastic packaging body which can be heated in a microwave oven as it is, without making holes before heating or unsealing it by cutting a part thereof. SOLUTION: A multi-layer laminate body composed of a plurality of layers including at least a sealant layer which can be heat-sealed, is heat-sealed to form this packaging body 10. Cyclized rubber peelable layers 12 are formed in advance to partly contact at least a heat-sealed part of the heat-seal part 11 of the sealant and peeled to open the heat-sealed part by a pressure when the inside pressure of the packaging body has reached a certain value by heating it.</p> |
