PROBLEM TO BE SOLVED: To provide a method for producing a heating implement capable of making the breadth of a joint portion smaller than that of a conventional one, and capable of making the heating implement generate heat even at a portion near the peripheral edge thereof.SOLUTION: The method for producing a heating implement 100 comprises the steps of: disposing a heat generator 103 generating heat owing to contact with air between a pair of sheet materials 101A, 102A at least one of which has air permeability forming a joint portion by joining the pair of sheet materials 101A, 102A extending from a peripheral edge 103a of the heat generator 103 cutting the joint portion and housing the heat generator 103 in a housing body 105 made up of the pair of sheet materials 101A, 102A. Joint and cutting of the pair of sheet materials 101A, 102A are carried out in a single process. The breadth of the joint portion between the pair of sheet materials 101A, 102A after cut is preferably 25 μm or more to 1 mm or less.COPYRIGHT: (C)2014,JPO&INPIT【課題】接合部位の幅を従来よりも小さくでき、温熱具をその周縁近くの部位まで発熱させ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】少なくとも一方が通気性を有する一対のシート材101A,102A間に、空気との接触によって発熱する発熱体103を配置し;発熱体103の周縁103aから延出した一対のシート材101A,102Aを接合して接合部位を形成し、かつ該接合部位を切断して、一対のシート材101A,102Aからなる収容体105内に発熱体103が収容されてなる温熱具100を製造する方法である。一対のシート材101A,102Aの接合及び切断を一つの工程で行う。切断後の一対のシート材101A,102Aどうしの接合部位の幅を25μm以上1mm以下とすることが好適である。【選択図】図4
