Since {HEAD ~ the entire structure} of the sheet shaped heat generating body is integrated, with the fibrous and porous sheet shaped substrate assuring uniform distribution and firm support of the oxidizable metal powder or the heat generating substance, {TAIL ~ the body} is flexible, is free from one sided distribution of the heat generating substance, and has excellent heat generating capability 
Since { HEAD ~ the entire structure } of the sheet shaped heat generating body is integrated , with the fibrous and porous sheet shaped substrate assuring uniform distribution and firm support of the oxidizable metal powder or the heat generating substance , { TAIL ~ the body } is flexible , is free from one sided distribution of the heat generating substance , and has excellent heat generating capability
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH