Method for molding resin material mixed with pulverized material

A method for molding a resin material mixed with a pulverized material, the method comprising the steps of:

• plasticizing and injection-molding a resin material mixed with a pulverized material in which a virgin material and a pulverized material are mixed in a predetermined ratio, wherein bulk densities of the virgin material and the pulverized material are previously measured;
• based on pulverized material bulk density data related to the bulk density of the pulverized material and virgin material bulk density data related to the bulk density of the virgin material obtained by the measurement, determining and registering a conversion coefficient for a predetermined molding condition when the virgin material and the pulverized material are mixed in the predetermined ratio;
• when the pulverized material is used, measuring at least a bulk density of the pulverized material;
• and
• based on the pulverized material bulk density data, the virgin material bulk density data obtained by the measurement, and the conversion coefficient, processing for modifying the molding condition.