| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heating-treatment packaging body with regard to a packaging body being filled with foods, etc., which makes for heating-treating by a microwave oven of contents such as food products, etc. as they are wrapped, and which prevents rupture of the packaging body due to heating and pressure rise inside, and deformation or breakage of the packaging body after relieving of pressure, and to provide a packaging method of contents in a heating-treatment packaging body. <P>SOLUTION: The heating-treatment packaging body A has a container body whose encasing body is filled with contents (b) inside, and a lid body stuck by heat seal to the whole of the upper surface of the flange of the container proper, thus providing airtight package enclosure on the container body. A belt-like heat seal S provided both on the whole periphery portion of the flange and on the lid body has a first protrusion(s) 15 provided at its inner end side on the upper surface of the flange, the first protrusion(s) being in continuation with the belt-like heat seal with its (their) tip portion(s) directed toward the encasing body side, at one location or at a plurality of locations, and a first air vent(s) 16 is (are) bored on the upper surface of the flange, penetrating through the flange in the direction of its thickness, located in the vicinity and outside of the first protrusion. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
