Abstract: An infrared radiation-emitting resin composition includes an infrared radiation-emitting material and a resin. The infrared radiation-emitting material includes a titanium dioxide, a calcined hydrotalcite-like compound, and a nano-sized diamond. In the infrared radiation-emitting material, the mass ratio between the titanium dioxide and the calcined hydrotalcite-like compound is 60:40 to 90:10, while the content of the nano-sized diamond is 0.01 parts by mass or more and 0.5 parts by mass or less with respect to 100 parts by mass of the sum of the titanium dioxide and the calcined hydrotalcite-like compound.

Abstract: An infrared radiation-emitting resin composition includes an infrared radiation-emitting material and a resin. The infrared radiation-emitting material includes a titanium dioxide, a calcined hydrotalcite-like compound, and a nano-sized diamond. In the infrared radiation-emitting material, the mass ratio between the titanium dioxide and the calcined hydrotalcite-like compound is 60:40 to 90:10, while the content of the nano-sized diamond is 0.01 parts by mass or more and 0.5 parts by mass or less with respect to 100 parts by mass of the sum of the titanium dioxide and the calcined hydrotalcite-like compound.

Abstract: There is provided a novel heat regenerating element having an excellent heat regenerating property which can accumulate thermal energy and effectively radiate the accumulated thermal energy to various objects. The present invention further provides a heat regenerating material including the heat regenerating element. The heat regenerating element of the present invention includes: 100 parts by weight of a base component composed of 60 to 90 parts by weight of a hydrotalcite compound and a remnant including at least one of zinc oxide and electrically-conductive zinc oxide; and 0.5 to 1 parts by weight of at least one heat regeneration enhancing component selected from a group of zirconium oxide components and zirconium carbide components.

Abstract: To provide a novel far infrared radiation emitting material which can efficiently emit the thermal energy required for the excitation of water molecules contained in animal and vegetable bodies including human organizations, can be produced at a low cost and is highly usable in general-purpose applications. The far infrared radiation emitting material of the present invention comprises 60 to 90% by weight of at least one type selected from titanium dioxide and titanium carbide, 10 to 40% by weight of at least one type selected from silicon dioxide and silicon carbide and 0.01 to 0.5% by weight of an oxide of a rare earth metal. Further, a far infrared radiation emitting material having a plate, cylindrical or fibrous shape is formed of a composition containing this far infrared radiation emitting material and a synthetic resin and utilized.

Abstract: To provide a novel far infrared radiation emitting material which can efficiently emit the thermal energy required for the excitation of water molecules contained in animal and vegetable bodies including human organizations, can be produced at a low cost and is highly usable in general-purpose applications. The far infrared radiation emitting material of the present invention comprises 60 to 90% by weight of at least one type selected from titanium dioxide and titanium carbide, 10 to 40% by weight of at least one type selected from silicon dioxide and silicon carbide and 0.01 to 0.5% by weight of an oxide of a rare earth metal. Further, a far infrared radiation emitting material having a plate, cylindrical or fibrous shape is formed of a composition containing this far infrared radiation emitting material and a synthetic resin and utilized.

Abstract: A novel far-infrared radiating material is provided, which can effectively radiate thermal energy necessary for exciting water molecules contained in animals and plants, for example in human body. A far-infrared radiating material comprises 5-60 wt. % of alumina, 20-70 wt. % of at least one titanium compound selected from titanium dioxide, titanium carbide and titanium boride, 20-50 wt. % of at least one zirconium compound selected from zirconia, zirconium carbide and zirconium boride, and 0.01-0.5 wt. % of a rare earth oxide. A far-infrared radiating composition comprises the material and a resin, which may be formed in the form of plate, tube, sheet, or fiber.

Abstract: A method of manufacturing tubes filled with powdery and/or granular substances, such as flux-cored welding wires. A tube filled with a powdery and/or granular substance is continuously manufactured by forming a metal strip being fed in its longitudinal direction into an unwelded tube (1a) using forming rolls (2), feeding a powdery and/or granular substance (F) into the unwelded tube (1a) being formed through its opening, butt-welding together fringing edges of the opening, and reducing the diameter of the welded tube (1b). An allowable minimum heat input below which cold cracking occurs and a maximum allowable heat input above which spatters whose diameter is not smaller than 0.83 times the inside diameter of the finished tube are generated are determined in advance, and the butt welding is performed with a heat input larger than the allowable minimum heat input and smaller than the allowable maximum heat input.