abstract |
(57) [Summary] [PROBLEMS] To provide a cold insulator which has flexibility and can be deformed according to a place of use and which is not bulky during storage and transportation. A cooling material (10) in which a polymer water-absorbing resin (20C) is sealed in a void (20B) formed by laminating a water-permeable base fabric (30) and a thermoplastic resin film (20) having a plurality of protrusions (20A). |