PROBLEM TO BE SOLVED: To provide a method of manufacturing a heating implement which can distribute a functional agent in a desired arrangement with accuracy and can efficiently manufacture a heating implement which shows excellent heating characteristics and high functionality.SOLUTION: A method of manufacturing a heating implement 1 which includes a body part 2 comprising a first air-permeable sheet 4a positioned on a body side, a second sheet 4b, and a heating part 6 positioned between both sheets and has a functional agent 7 which can impart a specific function to a skin side surface 1a of the first sheet 4a and is covered with a separating sheet 9 includes: a functional agent filling process for filling the functional agent 7 in a recessed part 9a of an uneven sheet 9A having a first surface where a recessed part 9a and a protruding part 9b are formed a sheet joining process for overlapping the uneven sheet 9A on a surface that becomes the skin side surface 1a of the first sheet 4a in a manner that the surface faces the recessed part 9a and a pressurizing process for pressurizing the uneven sheet 9A from the side of a second surface 92 to press against the first sheet 4a simultaneously with the sheet joining process or after the sheet joining process.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2017,JPO&INPIT【課題】機能剤を所望の配置に正確に分布させることができ、発熱特性が良好で、機能性も高い温熱具を効率よく製造することができる、温熱具の製造方法を提供すること。【解決手段】身体側に位置する通気性の第1シート4a、第2シート4b及び両シート間に位置する発熱部6を有する本体部2を備え、第1シート4aにおける肌側面1aに、特定の機能を付与し得る機能剤7が剥離シート9に被覆されている温熱具1の製造方法であり、凹部9a及び凸部9bが形成されている第1面を有する凹凸シート9Aの凹部9aに機能剤7を充填する機能剤充填工程と、第1シート4aの肌側面1aとなる面上に、該面と凹部9aとが対向するように凹凸シート9Aを重ねる合流工程と、合流工程と同時又は合流工程後に凹凸シート9Aを第2面92側から加圧して第1シート4aに押し付ける加圧工程を備える。【選択図】図6
