Manufacturing method of hot pack and Hot pack and Body warmer using hot pack

摘要

The present invention relates to a method for manufacturing a hot pack and a body warmer using a hot pack and a hot pack, wherein the method for manufacturing a hot pack includes 52 to 58% by weight of iron, 2 to 3% by weight of carbon, and 5 to 6 of salt. In order to form a heating element containing weight %, vermiculite 1.5 to 2.5 weight %, water 28 to 35 weight %, and polymer 4 to 6 weight %, the iron powder, the carbon, the salt, A mixing step of mixing the vermiculite, the moisture, and the polymer; And a sealing step of sealing the heating element inside the cover sheet, wherein the hot pack is manufactured by a hot pack manufacturing method, and the body warmer using the hot pack includes a hot pack therein. Is to do.