| 摘要 |
<p>PROBLEM TO BE SOLVED: To allow cooked food to be appropriately steamed by providing, on a heat-sealed part, an easy-to-peel region which peels off and forms a vapor escape hole when a predetermined vapor pressure is reached. SOLUTION: A plastic laminate film 2 is folded so that joining ends 3, 3 are positioned at a center of a back, the joining ends 3 are heat-sealed to form a heat-sealed part, and an end of a formed cylinder is heat-sealed to form a heat-sealed part 5. An opening 6 formed on an end of a bag 1. is heat-sealed after food is filled to form a heat-sealed part, thereby sealing the opening 6. A silicone coating agent layer 10 is formed by narrow silicone agent parts 10a arranged with distances. In addition, when the heat-sealed part 5 and a heat-sealed part 7 are formed by heat-sealing, an easy-to-peel region 11 whose adhesion intensity is weaker than that of the heat-sealed parts 5, 7 is formed on a part of the heat-sealed parts 5, 7.</p> |
