Abstract: The present invention provides a film for a back sheet of a solar cell exhibiting excellent water vapor barrier properties, water resistance and gas barrier properties, has flexibility and mechanical strength and has excellent heat stability, and a method for producing the film. The present invention is a water vapor barrier film comprising a clay membrane coated on a PET substrate, wherein the clay membrane is formed of clay and an additive; the weight ratio of the clay relative to the total sold is 60 to 90% by weight in the clay membrane; the production process thereof comprises a water resistance imparting heat treatment at 100 to 200° C. after the coating and drying; the film has a water vapor transmission rate of less than 3 g/m2·day; the additive in the modified clay is a polyimide; and at least 90% by mole of exchangeable ions is lithium ion, and a method for producing the water vapor barrier film.

Abstract: To provide a composite that can find application to various uses in a wide spectrum of fields, for example, sealing members, such as a joint sheet, a gasket and a packing, for use in junction portions, etc. of pipings of power plant and chemical plant, radiation sheets, electromagnetic wave shielding members, soundproof sheets, etc., and provide a process for producing the composite; a gasket or packing based on the composite and a clay dispersion liquid used for the composite. There is provided a composite composed mainly of graphite and clay and having the structure of graphite laminated with and/or impregnated with clay. The composite is produced by subjecting an exfoliated graphite sheet or film or a molding therefrom to coating with and/or immersion in a clay dispersion liquid with clay particles dispersed therein, or by laminating together of an exfoliated graphite sheet and/or film and a sheet and/or film composed mainly of clay. Further, a gasket or packing is produced by molding the composite.

Abstract: The present invention provides a film for a back sheet of a solar cell exhibiting excellent water vapor barrier properties, water resistance and gas barrier properties, has flexibility and mechanical strength and has excellent heat stability, and a method for producing the film. The present invention is a water vapor barrier film comprising a clay membrane coated on a PET substrate, wherein the clay membrane is formed of clay and an additive; the weight ratio of the clay relative to the total sold is 60 to 90% by weight in the clay membrane; the production process thereof comprises a water resistance imparting heat treatment at 100 to 200° C. after the coating and drying; the film has a water vapor transmission rate of less than 3 g/m2·day; the additive in the modified clay is a polyimide; and at least 90% by mole of exchangeable ions is lithium ion, and a method for producing the water vapor barrier film.

Abstract: A footstep guide rail (3) (rail body 3a) is arranged so that a level H of a horizontal surface is set at the position obtained by adding a designated offset ? to a tangential line L of a drive sprocket (9) and the footstep guide rail (3) is provided, at its one end on an introductory side of the drive sprocket (9), with a curved part (13). At a reference position closest to the drive sprocket (9), the horizontal surface of the footstep guide rail (3) is changed to the curved part (13). Consequently, it is possible to absorb velocity unevenness of one footstep roller approaching the drive sprocket (9).

Abstract: [Problems to be Solved] To provide a graphite clay composite material, a process for producing the same, a gasket or packing comprising the composite material, and a clay dispersion used for the composite material, which can be applied to the various usages in a wide fields including; sealing material such as joint sheet, gasket, packing and the like, heat-release sheet, electromagnetic wave shielding material, sound-proof sheet and the like. [Means to Solving the Problems] A composite material comprising mainly a graphite and a clay, wherein the clay is laminated on and/or enters into a graphite layer.

Abstract: A mountainous or valley-shaped curved part 13 is provided in a part of a footstep guide rail 3 for guiding a movement of footstep rollers 5 linked by a footstep chain 7, the part being positioned in the vicinity of a drive sprocket 9. Consequently, owing to meshing of the footstep rollers 5 with the drive sprocket 9, an unevenness in velocity of the footstep rollers 5 is absorbed by the curved part 13, so that a moving velocity of the footstep rollers 5 moving on the downstream of the curved part 13 is maintained constantly, suppressing vibrating of the footsteps 4.

Abstract: A footstep guide rail (3) (rail body 3a) is arranged so that a level H of a horizontal surface is set at the position obtained by adding a designated offset 6 to a tangential line L of a drive sprocket (9) and the footstep guide rail (3) is provided, at its one end on an introductory side of the drive sprocket (9), with a curved part (13). At a reference position closest to the drive sprocket (9), the horizontal surface of the footstep guide rail (3) is changed to the curved part (13). Consequently, it is possible to absorb velocity unevenness of one footstep roller approaching the drive sprocket (9).

Abstract: A footstep guide rail (3) (rail body 3a) is arranged so that a level H of a horizontal surface is set at the position obtained by adding a designated offset ? to a tangential line L of a drive sprocket (9) and the footstep guide rail (3) is provided, at its one end on an introductory side of the drive sprocket (9), with a curved part (13). At a reference position closest to the drive sprocket (9), the horizontal surface of the footstep guide rail (3) is changed to the curved part (13). Consequently, it is possible to absorb velocity unevenness of one footstep roller approaching the drive sprocket (9).

Abstract: A mountainous or valley-shaped curved part 13 is provided in a part of a footstep guide rail 3 for guiding a movement of footstep rollers 5 linked by a footstep chain 7, the part being positioned in the vicinity of a drive sprocket 9. Consequently, owing to meshing of the footstep rollers 5 with the drive sprocket 9, an unevenness in velocity of the footstep rollers 5 is absorbed by the curved part 13, so that a moving velocity of the footstep rollers 5 moving on the downstream of the curved part 13 is maintained constantly, suppressing vibrating of the footsteps 4.

Abstract: A mountainous or valley-shaped curved part 13 is provided in a part of a footstep guide rail 3 for guiding a movement of footstep rollers 5 linked by a footstep chain 7, the part being positioned in the vicinity of a drive sprocket 9. Consequently, owing to meshing of the footstep rollers 5 with the drive sprocket 9, an unevenness in velocity of the footstep rollers 5 is absorbed by the curved part 13, so that a moving velocity of the footstep rollers 5 moving on the downstream of the curved part 13 is maintained constantly, suppressing vibrating of the footsteps 4.