Method for producing molded product, method for producing molded product having plating film, method for producing resin pellet, foam molded product having plating film, foam injection molding method, nozzle unit, and injection molding apparatus

A method for producing a resin pellet, comprising:

• plasticizing and melting a block copolymer having a hydrophilic segment;
• mixing pressurized carbon dioxide in which a functional material is dissolved with the block copolymer plasticized and melted;
• molding the block copolymer mixed with the functional material by extrusion molding;
• and
• crushing the molded the block copolymer mixed with the functional material.

A method for producing a molded product having a plating film, comprising:

• preparing a resin pellet in which metallic fine particles are dispersed in a thermoplastic resin;
• plasticizing and melting the resin pellet to mold the molded product;
• and
• making an electroless plating solution come into contact with the molded product to form the plating film on a surface of the molded product.

A method for producing a resin pellet, comprising:

• plasticizing and melting a thermoplastic resin;
• mixing pressurized carbon dioxide in which metallic fine particles are dissolved with the thermoplastic resin plasticized and melted;
• molding the thermoplastic resin mixed with the metallic fine particles by extrusion molding;
• and
• crushing the molded thermoplastic resin mixed with the metallic fine particles.

A foam injection molding method, comprising:

• using an injection molding apparatus which includes a plasticizing cylinder, a mold, and a nozzle unit positioned between the plasticizing cylinder and the mold;
• plasticizing and melting a resin in the plasticizing cylinder;
• mixing a physical foaming agent with the resin plasticized and melted in the plasticizing cylinder;
• cooling the resin mixed with the physical foaming agent in the nozzle unit;
• discharging the physical foaming agent from the resin cooled in the nozzle unit;
• heating the resin from which the physical foaming agent has been discharged in the nozzle unit;
• and
• injecting and charging of the resin heated into the mold to obtain a foam molded product.