Abstract: A torque converter of the present invention includes a pump impeller, a turbine impeller, a first stator impeller, a second stator impeller, a first one-way clutch annularly provided on the inner periphery of the first stator impeller, and a second one-way clutch annularly provided from the inner periphery of the first one-way clutch to the inner periphery of the second stator impeller. The first stator impeller is coupled to a fixed shaft via the first and second one-way clutches, and the second stator impeller is coupled to the fixed shaft only via the second one-way clutch.

Abstract: Provided is a method for manufacturing an injection-molded article, where the method is capable of obtaining a molded article having a high crystallinity while reducing the amount of flash generated and has excellent productivity. A polyarylene sulfide-based resin composition is injection-molded at a mold temperature of 100° C. or less using a mold on the inner surface of which a heat-insulating layer constituted of porous zirconia is formed. It is preferable that the heat-insulating layer is formed by a spraying method. Preferably, the heat-insulating layer has a thermal conductivity of 2 W/(m·K) or less. Preferably, the heat-insulating layer has a thickness of no less than 200 ?m.

Abstract: Provided is a method for manufacturing a mold for manufacturing a molded article, by which not only is the occurrence of flash suppressed but also the crystallization of the surface is sufficiently accelerated when the mold temperature during the molding of a crystalline thermoplastic resin is set at Tc2?100° C. or less.

Abstract: A torque converter of the present invention includes a pump impeller, a turbine impeller, a first stator impeller, a second stator impeller, a first one-way clutch annularly provided on the inner periphery of the first stator impeller, and a second one-way clutch annularly provided from the inner periphery of the first one-way clutch to the inner periphery of the second stator impeller. The first stator impeller is coupled to a fixed shaft via the first and second one-way clutches, and the second stator impeller is coupled to the fixed shaft only via the second one-way clutch.

Abstract: To provide a method for manufacturing an injection-molded article that can control an amount of flash generated during molding, and obtain a molded article of a high degree of crystallinity. In injection molding of a polyarylene sulfide resin composition, injection molding is performed using a mold having a heat-insulating layer formed on an inner surface of a mold, and at a mold temperature of 100° C. or less. It is preferable for the thermal layer to have a thermal conductivity ratio of 5 W/(m·K) or less. Furthermore, a composition including a polyimide resin can be exemplified as a preferable heat-insulating layer. The heat-insulating layer is preferably the one including a polyimide resin.

Abstract: Composite molded articles having relatively rigid and flexible resin regions are bonded to one another along an interfacial fusion zone. A normally solid thermoplastic polyalkylene terephthalate resin preform (which will constitute the relatively rigid region of the composite article) is placed in a mold cavity. The flexible region of the composite article is then formed by introducing a molten thermoplastic polyester elastomer resin into the mold cavity at a temperature which is greater than the melt temperature of the solid preform. The introduced thermoplastic polyester elastomer resin contacts and at least partially plasticizes a surface region of the solid preform along the interfacial bonding zone within the mold cavity to thereby cause the polyester elastomer resin to coalesce with the at least partially plasticized surface region of the polyester resin. Upon cooling and solidification, the solid preform and the polyester elastomer are fused to one another along the interfacial bonding zone.