| 摘要 |
PURPOSE:To obtain the subject cold-accumulation material resistant to the solidification of the whole body even by excessive cooling, keeping the heat- absorbed and hardened state over a long period and suitable for the cooling of a water cushion and drink by sealing a number of small cold-accumulation pieces in a bag and air-tightly packing the bag in dried state. CONSTITUTION:A spherical, cubic or rod-shaped solid, liquid or jelly particle having cold-accumulation effect and separated from each other is separately sealed in a plastic shell to obtain a small cold-accumulation piece 1. A number of the cold-accumulation pieces are sealed in a bag 2 and the content of the bag 2 is air-tightly packed in dried state. |
