PROBLEM TO BE SOLVED: To provide an improved cooling bag and a method for producing the same, in which an inner bag in the outer bag is surely ruptured by applying a force of a predetermined amount or more from the outside of the outer bag, and an endothermic reaction occurs quickly and surely. To do. An outer bag (11) and an inner bag (12) are provided, and the outer bag (11) contains a powdery medicine (13). The inner bag 12 has a predetermined size, and water or a hydrate is sealed in the inner bag 12 and stored in the outer bag 11. The inner bag 12 is ruptured inside the outer bag 11 by applying a predetermined force or more from the outside of the outer bag 11, and the water in the inner bag 12 is discharged into the outer bag 11 and immersed in the medicine 13 to endothermic reaction. It is the cooling bag 10 which produces. The cooling bag 10 is provided with a stopper portion for preventing the inner bag 12 from moving inside the outer bag 11 so that the inner bag 12 does not move inside the outer bag 11 when a force is applied from the outside of the outer bag 11. There is. [Selection diagram] Figure 1【課題】外袋の外側から所定以上の力を加えることで、外袋内の内袋が確実に破袋して、吸熱反応が迅速かつ確実に生じる改良された冷却袋及びその製造方法を提供すること。【解決手段】外袋１１及び内袋１２を備え、外袋１１には、粉粒状の薬剤１３が収容されている。内袋１２は、所定の大きさを有し、その中に水又は水和物が密封されて外袋１１内に納められている。外袋１１の外側から所定以上の力が加わることで外袋１１内で内袋１２が破袋して、内袋１２中の水が外袋１１内へ出て薬剤１３に浸漬して吸熱反応を生じる冷却袋１０である。冷却袋１０には、外袋１１の外側から力を加える際に、外袋１１内で内袋１２が移動しないように、内袋１２の移動を防げる止め部が、外袋１１に設けられている。【選択図】図１
