The method of this invention is to apply an aqueous emulsion coating material on the surface of air-buffled light weight concrete(ALC) base material 1 and to apply high-frequency electric field for dielectrically heating water and making water hot, followed by drying the coating material. 軽量気泡コンクリート(ALC)基材1の表面に水系エマルジョンタイプの塗料を塗布し、高周波電界を印加して水を誘電加熱して発熱させることで塗料を乾燥する。 - 特許庁