| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically and safely regulate the pressure even when a packaged body is heated in the original condition by providing a pressure regulating function in which an electromagnetic wave absorption layer is laminated on a part of an outer surface on a packaged body side. SOLUTION: A packaged body side 11 is a surface to which an electromagnetic wave absorption layer 2 of a packaged body 1 is attached. The electromagnetic wave absorption layer 2 efficiently generates heat in the high frequency range, and uses a thin film layer of an electrically conductive metal, a thin film layer consisting of a magnetic body, or a thin film layer consisting of a ferromagnetic body. A covered piece 3 is executed to start the heating of the packaged body by a microwave oven, and to give the directionality to steam to be ejected, and ribs are provided on a back side in a radial direction. A steam vent 4 is a flow-out passage of steam, etc., formed of a non-adhesive part or a small hole. An adhesive part 5 attaches and fixes the covered piece to an outer surface of the packaged body side at a peripheral edge part around the electromagnetic wave absorption layer. When the heating of the packaged body 1 by the microwave oven is started, steam, etc., can be led outside the packaged body, and the internal pressure of the packaged body can be regulated.</p> |
