PROBLEM TO BE SOLVED: To provide a microwave heating object storage bag in which an after-closing edge line portion closed after injecting a heating object in a bag body out of a plurality of edge line portions forming a closing edge line surrounding a sealing storage area of a microwave heating object (heated object) can be easily and accurately closed, and in which the after-closing edge line is continued to an adjacent edge line portion so that a steeple effect is prevented in which heating is concentrated during microwave heating, which reduces the risk of melting damage of the bag body during microwave heating.SOLUTION: In the microwave heating object storage bag A, the closing edge line 12 surrounding the sealing storage area 10 of the heated object F of the bag body 1 is composed of the plurality of edge line portions that are sequentially continued. The plurality of edge line portions include the after-closing edge line portion (rear edge line portion) 122 which is closed after injection of the heated object into the bag body 1. The after-closing edge line portion 122 closed after injection of the heated object into the bag body 1 is a linear edge line portion and is continued to the adjacent edge line portion at an obtuse angle θ3 seen from the sealing storage area side.COPYRIGHT: (C)2013,JPO&INPIT【課題】電子レンジ加熱対象物(被加熱物)の密封収容域を囲む閉じ縁ラインを形成する複数の縁ライン部分のうち被加熱物の袋本体内投入後に閉じられる後閉じ縁ライン部分が簡単に精度よく閉じられることができるとともに電子レンジ加熱時に集中加熱される尖塔効果をもたらさないように隣り合う縁ライン部分に連続しており、それだけ袋本体の電子レンジ加熱時の溶融損傷のおそれを低減できる電子レンジ加熱物収容袋を提供する。【解決手段】袋本体1の被加熱物Fの密封収容域10を囲む閉じ縁ライン12は順次連続する複数の縁ライン部分からなり、複数の縁ライン部分には被加熱物の袋本体1内投入後に閉じられる後閉じ縁ライン部分(後縁ライン部分)122が含まれており、被加熱物の袋本体1内投入後に閉じられる後閉じ縁ライン部分122は直線状の縁ライン部分であるとともに隣り合う縁ライン部分に密封収容域側から見て鈍角θ3をなして連続している電子レンジ加熱物収容袋A。【選択図】図1