Abstract: Thermoplastic synthetic resin flowing through both gates 173, 173 into lug part flanges 16, 16 collides with a confronting wall 161, converts direction of flow by 90°, changing velocity of flow, and thus fills the lug part flanges 16, 16 and flanges 15,15 on the long side. After this, as thermoplastic synthetic resin flows into thin outer peripheral walls 131, 132 and partition walls 133 at an optimum velocity of flow, thermoplastic synthetic resin flows smoothly and it is possible to form a smooth molded article. The lug part flanges 16,16 and the flanges 15, 15 on the long side serve as runners, so that thermoplastic synthetic resin flows smoothly into the thin outer peripheral walls 131,132 and partition wall 133.

Abstract: A heat exchanger and a method for manufacturing same are provided. The heat exchanger has outer surfaces positioned on the side toward the electronic component that is the object of heat exchange, and resin-coated inner surfaces. A thin metal plate having a predetermined thickness is press-worked to a predetermined shape and a first molded body and a second molded body are formed. The two shaped molded bodies are combined so that the inner surface sides face each other, and the inner surface at the edge portion and the inner surface at the edge parts portion are thermally fused by hot press-working. The edge portions are subjected to ultrafine processing and then inserted into a die, and a thermoplastic resin composition is injected into the cavity of the die and a joining member is molded.

Abstract: A thermoplastic elastomer composition of excellent fusion bond property, which is useful to produce a composite molded product having a molded part that is made of a synthetic resin material, for example, an engineering plastic material, which has excellent mechanical strength, and a molded part that is made of a high-elasticity thermoplastic elastomer. The thermoplastic elastomer composition comprises 100 parts by weight of a thermoplastic elastomer and 25 to 185 parts by weight of a thermoplastic polyester elastomer.

Abstract: A process for producing a composite molded product by fusion-bonding a thermoplastic elastomer composition to a molded piece which has previously been formed from a synthetic resin material and which has a higher hardness (JIS Shore hardness: A scale) than that of a molded piece formed from the thermoplastic elastomer composition, or by fusion-bonding a synthetic resin material to a molded piece which has previously been formed from a thermoplastic elastomer composition and which has a lower hardness than that of a molded piece formed from the synthetic resin material. The thermoplastic elastomer composition comprises 100 parts by weight of a thermoplastic elastomer and 25 to 185 parts by weight of a polyether block amide.