Further the marine shell or charcoal and the heat-resistant resin are kneaded with a heat-resistant fiber and the kneaded material is formed into a proper shape and baked to give a far infrared radiation radiator for a cooker, etc. さらに海産殻炭と耐熱性樹脂とに耐熱性繊維を混練し、その混練物で適宜な形に成形焼成した調理機器用遠赤外線の放射体を構成した。 - 特許庁