Abstract: The present invention provides an organic electroluminescence device capable of having not only a device lifetime comparable to that of an existing organic electroluminescence device but also a small thickness of smaller than 10 ?m and excellent flexibility. The present invention relates to an organic electroluminescence device having a structure including: an anode; a cathode on a substrate; and a laminate of multiple layers between the anode and the cathode, the device having a thickness of smaller than 10 ?m.

Abstract: Provided is a run-flat tire which has an excellent run-flat performance and at the same time excels in high-speed straight running stability in the non-punctured state, a steering stability on both of a dry road surface and a wet road surface and a fuel efficient performance. A run-flat tire is provided wherein at least two crossing belt layers which are composed of rubberized steel cords and a tread rubber are disposed in the mentioned order, and wherein a reinforcing rubber is provided in the inside portion of carcass. The steel cords have a single-twisted structure or a core/single layer sheath structure with 6 to 10 steel wires having a wire diameter of 0.10 to 0.20 mm, the end count of the steel cords is not smaller than 40 cords/50 mm, the distance between the adjacent steel cords in the belt layer is not smaller than 0.3 mm, and the dynamic storage modulus E? (MPa) at a temperature of 30° C. and the loss tangent tan ? at a temperature of 60° C.

Abstract: A rubber-covered belt ply forms a belt layer. At least a majority of metal wires in the ply exist as metal wire bundles in which a plurality of metal wires of circular cross-sections and substantially equal wire diameters are aligned in parallel without being twisted together, the metal wire bundles being aligned planarly and in parallel with intervals between the metal wire bundles in a transverse direction. At least one layer, which is a cap layer in which organic fibers are covered with rubber and/or a reinforcing layer which is formed of rubber or whose main component is rubber, is disposed between the belt layer and a tread.

Abstract: A rubber-covered belt ply forms a belt layer. At least a majority of metal wires in the ply exist as metal wire bundles in which a plurality of metal wires of circular cross-sections and substantially equal wire diameters are aligned in parallel without being twisted together, the metal wire bundles being aligned planarly and in parallel with intervals between the metal wire bundles in a transverse direction. At least one layer, which is a cap layer in which organic fibers are covered with rubber and/or a reinforcing layer which is formed of rubber or whose main component is rubber, is disposed between the belt layer and a tread.

Abstract: An organic fiber cord for rubber reinforcement satisfies relationships of S1.gtoreq.2.5, S2.ltoreq.1.8 and S2.ltoreq.S1-2.0 wherein S1 and S2 are dry heat shrinkage factors under particular conditions in order to improve the durability and dimensional stability of rubber articles without the degradation of other properties in the rubber article. When such an organic fiber cord is applied to a carcass ply of a pneumatic radial tire, the tire durability and uniformity are considerably improved.