PROBLEM TO BE SOLVED: To provide a method of manufacturing an exothermic sheet form in which a proper electrolyte is added corresponding to a mass of individual intermediate sheet form.SOLUTION: A raw material sheet for the exothermic sheet form comprises an oxidizable metal, a fibrous material, a water-holding agent, and moisture, and intermediate sheet forms are continuously cut off from the raw material sheet for the exothermic sheet form, and the intermediate sheet forms continuously carried are added with the electrolyte so as to produce the exothermic sheet form continuously in the method of manufacturing an exothermic sheet form. The mass of the individual intermediate sheet form carried continuously is measured, and according to the measured mass information, the right amount of the electrolyte to be added to every intermediate sheet form measured is calculated by control means, and the right amount of the electrolyte calculated for every intermediate sheet form which is continuously carried is added to the intermediate sheet form by electrolyte-adding means in the method of manufacturing an exothermic sheet form.COPYRIGHT: (C)2011,JPO&INPIT【課題】個々の中間抄造体の質量に対応する適正な電解質を付与する発熱抄造体の製造方法を提供する。【解決手段】被酸化性金属、繊維状物、保水剤、及び水分を含む発熱抄造体素材原反から中間抄造体を連続的に切り出し、該連続して搬送されてくる中間抄造体に順次電解質を付与し発熱抄造体を連続生産する発熱抄造体の製造方法であって、前記連続して搬送されてくる個々の中間抄造体の質量を測定し、該測定質量情報により前記測定された中間抄造体ごとの電解質の付与適正量を制御手段が算定し、その連続搬送される中間抄造体ごとに算定された付与適正量の電解質を電解質付与手段により該中間抄造体に付与する発熱抄造体の製造方法。【選択図】図1