Sheetlike exothermic element, sheetlike exothermic intermediate, and exothermic sheet



【課題】高い発熱温度を長時間維持し続けることができ、且つ発熱性能にも優れる発熱シートを提供すること。 【解決手段】発熱シート1は、被酸化性金属、繊維状物、活性炭及び酸化助剤となる電解質を含む発熱性層21の少なくとも一面に、前記活性炭よりも平均粒径が小さい活性炭が層状に配されているシート状発熱体2が、透湿性を有する収容体3に収容されている。発熱性層21に含まれる活性炭の平均粒径Rcが1〜500μmであることが好ましい。前記層状に配されている活性炭の平均粒径Rsが0.1〜100μmであり、その比Rs/Rcが0.01〜0.7であることが好ましい。 【選択図】図1
<P>PROBLEM TO BE SOLVED: To provide an exothermic sheet which can sustain a high exothermic temperature for a long time and is excellent in heating performance. <P>SOLUTION: In the exothermic sheet 1, wherein, in at least one surface of an exothermic layer 21 including electrolytes which is oxidizable metals, fibers, activated carbons and oxidizing auxiliaries, a sheetlike exothermic element 2 having layered activated carbons with an average particle diameter smaller than that of the activated carbons is housed in a chassis 3 with moisture permeability. Preferably an average particle diameter Rc of the activated carbons in the exothermic layer 21 is 1-500 μm. Preferably, an average particle diameter Rs of the layered activated carbons is 0.1-100 μm, and a ratio of them Rs/Rc is 0.01-0.7. <P>COPYRIGHT: (C)2009,JPO&INPIT




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Cited By (1)

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    JP-2013208333-AOctober 10, 2013Kao Corp, 花王株式会社Thermal implement