Injection molding apparatus and injection molding method

An injection molding method for injection-molding an article by injecting a conductive material into a mold, the method comprising:

• a heating injection step of heating the conductive material to a temperature that allows the conductive material to melt and flow, and injecting the conductive material into the mold, by using a heating injection means;
• and
• an energizing step of applying a voltage to a plurality of conductive portions such that the conductive material injected is heated by current application when the conductive material comes into contact with the plurality of conductive portions, the conductive portions being provided at least at a portion of a surface of the mold defining a cavity and being insulated from each other, wherein
• the conductive material is mixed prior to being introduced into the cavity, by a static mixer provided in an area including a tip portion of the heating injection means and a flow path of the conductive material.