| 摘要 |
<p>PURPOSE: To provide an instant-cooling tool capable of being rapidly changed into a low temperature state on use and further persisting the cooling effect for a long period. CONSTITUTION: This instant cooling tool is produced by receiving an anhydrous ammonium salt 2, perlite 3, and a bag 5 in which water 4 is sealed in a flexible bag material 1. When the instant cooling tool is used, the bag 5 is torn in the bag material 1 to contact-react the water with the anhydrous ammonium salt 2.</p> |
