PROBLEM TO BE SOLVED: To provide a production device of a bag for cryopreservation, in which, in producing of a bag for cryopreservation formed of a fluorine-based resin to which heating processing is not easily performed, a deposition work of two resin sheets overlapped on each other can be automatically and properly performed, the bag for cryopreservation can be produced in mass production and cost reduction is achieved.SOLUTION: A production device of a bag for cryopreservation comprises: a sheet table 18； a sheet press body 19； a laser device 16； and a scanning structure 17. While relatively moving the sheet table 18 and the laser device 16 by the scanning structure 17, an infrared radiation laser beam is radiated to an interface of fluorine-based resin sheets S1, S2, then both sheets S1, S2 are integrated by a contour line bead 1, for forming a storage part 2 for storing a living body texture. In a state that the fluorine-based resin sheets S1, S2 are pressed and held by a radiator 25 which is a deposition posture, the infrared radiation laser beam is made act on the interface of both resin sheets S1, S2 via the radiator 25, for forming the storage part 2.SELECTED DRAWING: Figure 1【課題】加熱加工が難しいフッ素系樹脂を素材とする凍結保存用バッグを製造するについて、２枚重ねにした樹脂シートの溶着作業を自動的にしかも的確に行って、凍結保存用バッグを量産化し低コスト化できる凍結保存用バッグの製造装置を提供する。【解決手段】シートテーブル１８と、シート押圧体１９と、レーザー装置１６と、走査構造１７を備えている。シートテーブル１８とレーザー装置１６を走査構造１７で相対移動させながら、フッ素系樹脂シートＳ１・Ｓ２の界面に赤外線レーザービームを照射して、前記両シートＳ１・Ｓ２を外郭線ビード１で一体化し、生体組織を収容する収容部２を形成する。溶着姿勢にした放熱体２５でフッ素系樹脂シートＳ１・Ｓ２を押圧保持した状態で、赤外線レーザービームを、放熱体２５を介して両樹脂シートＳ１・Ｓ２の界面に作用させて収容部２を形成する。【選択図】図１
