Warmer and method of manufacturing the same

Abstract

Disclosed is a warmer, which includes a bag, a sealing component and a slow heating block. The bag is provided with an accommodation space and an opening, and the accommodation space communicates with the opening. The sealing component is configured to seal the opening after an initiator is placed into the accommodation space from the opening. The slow heating block made by mixing first heating powder and a sustained-release material is disposed in the accommodating space. The first heating powder is configured to react with the initiator to generate an exothermic reaction after the initiator is placed in the accommodation space. The sustained-release material is configured to delay the exothermic reaction between the first heating powder and the initiator. A weight ratio of the sustained-release material to the first heating powder is in the range from

Images