PROBLEM TO BE SOLVED: To provide a method and a device for detecting the remaining amount of a substance enclosed in a bag body, capable of improving the accuracy in detecting the remaining amount, capable of easily detecting the remaining amount of the substance enclosed in the bag body, allowing the bag body to be easily attached/detached, having a simple structure, and capable of being easily implemented and to provide a kneading device.SOLUTION: Both ends of a base material pack 2 having an ejection port 25 at one end to be expanded by enclosing a fluid substance therein are pulled in directions to be separated from each other, and when the length of the base material pack 2 reaches a predetermined first set value, it is announced that the remaining amount of the content in the base material pack 2 is reduced to the set value. Based on the announcement, the base material pack 2 is stroked toward the ejection port 25. After that, when it is detected that the thickness in a part close to the ejection port 25 in the base material pack 2 is reduced to a predetermined set value, it is recognized that the remaining amount of the content in the base material pack 2 is approximate to zero.COPYRIGHT: (C)2013,JPO&INPIT【課題】残量検知精度を高めることができ、袋体内の封入物の残量を簡単に検知し、袋体の着脱作業が容易であり、構造が簡単で、容易に実施できるようにした、袋体内の封入物の残量検知方法および装置、並びに練和装置を提供する。【解決手段】一端部に注出口25を有し、かつ内部に流動物を封入することにより膨満するようにした基材パック2の両端部を互いに離れる方向に引っ張り、基材パック2の長さが予め定めた第1の設定値に達することにより、基材パック2内の内容物の残量が設定値まで低下したことを報知し、その報知に基づいて、基材パック2を注出口25に向かってしごき、その後は、基材パック2における注出口25に近い部分の厚さが予め定めた設定値まで薄くなったことを検知して、基材パック2内の内容物の残量が0に近づいたことを知る。【選択図】 図2
