Method of setting pressure profile of injection-molding apparatus

A method of producing a molded product, comprising:

• performing, via computer-assisted engineering simulation software, a first simulation process to generate a plurality of molding conditions comprising a default injection velocity profile and a default packing pressure profile;
• conducting, via an injection-molding apparatus, a trial molding to inject a molding material into a mold using the molding conditions and then sensing a plurality of in-mold pressures at different sites in a mold cavity of the mold during the trial molding;
• conducting, via the injection-molding apparatus, an actual molding to produce the molded product using the molding conditions that were used for conducting the trial molding if a deviation of the in-mold pressures at an endpoint of a packing stage during the trial molding is less than a target pressure value at the endpoint of the packing stage;
• generating, via the injection-molding apparatus, at least one adjusted molding condition if the deviation of the in-mold pressures at the endpoint of the packing stage during the trial molding is not less than the target pressure value at the endpoint of the packing stage;
• performing, via the computer-assisted engineering simulation software, a second simulation process to generate at least one simulated molding condition corresponding to the adjusted molding condition to ensure that the adjusted molding condition is qualified;
• and
• conducting, via the injection-molding apparatus, the actual molding to produce the molded product using the adjusted molding conditions if the adjusted molding condition is qualified.