Abstract: A roll cover of the invention has at least first and second layers, the first layer is formed of a thermoplastic fluoropolymer without including a hydroxyl group, and the second layer is formed of a thermoplastic fluoropolymer including a hydroxyl group, an outer circumferential face (first layer) of the roll cover has a nonsticky property, and an inner circumferential face (second layer) of the roll cover can be adhered to a roll body with sufficient adhesion strength without performing dangerous and complicated chemical inside treatment, and a roll cover excellent in adhesion stability with time can be given. As a result, the chemical inside treatment is unnecessary in a manufacturing process of the roll cover, consequently productivity of the roll cover can be significantly improved.

Abstract: In a flat-shaped cable in which many conductors or transmission lines arranged side by side are covered with and held between insulators or sheaths, the insulators or the sheaths are made of non-sintered or semi-sintered polytetrafluoroethylene, and are sintered and joined at web portions where the insulators or the sheaths are connected through the conductors or the transmission lines, and therefore, even if it is formed by using a PTFE sheet or an EPTFE sheet as an insulator or a sheath of the flat-shaped cable such as a flat cable, the flat-shaped cable can be made to have excellent bendability, flexibility or pliability, as well as excellent slidability.

Abstract: A photocatalyst carrier is described, characterized in that the surface and/or pores of a hot-melt resin porous article is/are coated with a photocatalytic substance, and the system is heated to the softening temperature of the hot-melt resin to allow the photocatalytic substance to penetrate to some extent into the surface and/or pores of the hot-melt resin porous article, providing sufficient exposure to the surrounding atmosphere for the surface of the photocatalytic substance and supporting the substance on the hot-melt resin porous article with adequate bonding force.