Abstract: An injection molding apparatus includes a heating device heating reinforcing fiber assemblies, an injection cylinder to which a thermoplastic resin and the reinforcing fiber assemblies are supplied, a first screw compressing and kneading the thermoplastic resin, a second screw fibrillating the reinforcing fiber assemblies and dispersing reinforcing fibers obtained by the fibrillation into the thermoplastic resin, a resin supply portion supplying the thermoplastic resin to a void formed between the injection cylinder and the first screw, and a reinforcing fiber supply portion supplying the reinforcing fiber assemblies to a void formed between the injection cylinder and the second screw. The second screw serves as one of a non-compression screw and a low compression screw including a low compression ratio by which the reinforcing fibers are inhibited from being excessively broken at a time of receiving a shearing force generated by a rotation of the second screw.

Abstract: A method for connecting a metal material with an electric conductive resin material including the steps of heating the connecting portion of the electric conductive resin material with the metal material to a temperature equal to or more than a softening point of the connecting portion and depressing the metal material to the heated portion for melting joint.

Abstract: A method for connecting a metal material with an electric conductive resin material including the steps of heating the connecting portion of the electric conductive resin material with the metal material to a temperature equal to or more than a softening point of the connecting portion and depressing the metal material to the heated portion for melting joint.

Abstract: Provided are a conductive resin composition having little negative impact on the environment, a resin molding which includes conductive parts of the conductive resin composition and insulating parts, and their methods of production. The production costs for the resin molding are low. The conductive resin composition is formed by kneading a thermoplastic or thermosetting resin with a low melting point alloy, wherein the low melting point alloy is moldable with the resin and consists essentially of tin and is free of lead. An insulating body is formed through primary molding of a thermoplastic or thermosetting resin, and is integrated with conductive parts of the conductive resin composition through secondary molding; or alternatively, conductive parts are formed through primary molding of the conductive resin composition and an insulating body is formed while being integrated with the conductive parts through secondary molding.

Abstract: Provided are a conductive resin composition having little negative impact on the environment, a resin molding which includes conductive parts of the conductive resin composition and insulating parts, and their methods of production. The production costs for the resin molding are low. The conductive resin composition is formed by kneading a thermoplastic or thermosetting resin with a low melting point alloy, wherein the low melting point alloy is moldable with the resin and consists essentially of tin and is free of lead. An insulating body is formed through primary molding of a thermoplastic or thermosetting resin, and is integrated with conductive parts of the conductive resin composition through secondary molding; or alternatively, conductive parts are formed through primary molding of the conductive resin composition and an insulating body is formed while being integrated with the conductive parts through secondary molding.

Abstract: A vehicular exterior trim accessory having a built-in antenna body is constructed to include: a hollow body 21 blow-molded into a predetermined shape having an internal space; and an antenna body 3 fixed in the hollow body 21 and arranged in the internal space by the blow-molding method. The hollow body 21 and the antenna body 3 are made integral.

Abstract: An injection molding machine for plastics and any other similar materials. This invention molding machine is provided with a plasticization device for exclusive use which consecutively plasticizes material and feeds plasticized material to a plurality of injection devices in regular sequence. Each of the injection devices has its corresponding mold clamping device. By virtue of this construction, working efficiency of main sections of the machine is increased, resulting in a higher productivity of the entire injection molding machine.