PROBLEM TO BE SOLVED: To provide a producing method of a vitrified hydrogel membrane having a moderate strength and high transparency, a producing method of hydrogel material, the vitrified hydrogel membrane, a dried product of the vitrified hydrogel membrane, a cell sheet, and a producing device of the vitrified hydrogel membrane.SOLUTION: 1) There is provided a producing method of a vitrified hydrogel membrane, comprising a step D in which re-dried product of vitrified hydrogel is irradiated with ultraviolet ray and re-hydrated. 2) There is provided a producing method of vitrified hydrogel membrane, comprising, before the step D, a step A, in which free water is removed from hydrogel prior to vitrification step so as to be vitrified in order to obtain a hydrogel dried product. 3) There is provided a producing method of vitrified hydrogel membrane, in which the step A is a step that hydrogel whose gelation has not been completed is arranged between a mold having a hemisphere shape projecting surface and a mold having a hemisphere shape recessed surface for obtaining the hydrogel dried product.COPYRIGHT: (C)2015,JPO&INPIT【課題】適度な強度を有しつつ高い透明度を併せ持つガラス化後のハイドロゲル膜の製造方法、ハイドロゲル材料の製造方法、ガラス化後のハイドロゲル膜、ガラス化後のハイドロゲル膜の乾燥体、細胞シート、およびガラス化後のハイドロゲル膜の製造装置の提供。【解決手段】1)ガラス化後のハイドロゲル再乾燥体に紫外線を照射した後に再水和する工程Dを含むことを特徴とするガラス化後のハイドロゲル膜の製造方法。2)前記工程Dの前に、ガラス化工程を経ていないハイドロゲルから自由水を除去してガラス化させて、ハイドロゲル乾燥体を得る工程Aを含むガラス化後のハイドロゲル膜の製造方法。3)前記工程Aは半球状凸面を有する鋳型と半球状凹面を有する鋳型との間に完全にはゲル化していない状態のハイドロゲルを配置させて、前記ハイドロゲル乾燥体を得る工程であるガラス化後のハイドロゲル膜の製造方法。【選択図】なし
