| 摘要 |
<p>PURPOSE:To obtain an economical metal heating element, improved in usability and useful in disposable body warmers, etc., with hardly any curing of a mixing material by containing the mixing material of iron powder, a chloride and vermiculite with water in an air-permeable bag. CONSTITUTION:The objective metal heating element obtained by mixing material 2 consisting of iron powder, a chloride and vermiculite, having about <=2mm particle diameter with water in an air-permeable bag 1, such as disposable body warmer. Furthermore, the vermiculite has water holding properties of about 2 times based on that of active carbon and sufficiently used in an amount of about a half of the active carbon.</p> |
