Injection molding method and injection molding machine

An injection molding method in which an injection filling process of injecting and filling a molding material by an injection device into a mold composed of a movable mold and a stationary mold and having a mold gap therebetween is performed, and, after completion of the injection filling process, a compression process of compressing the molding material by applying a predetermined mold closing pressure to the mold by a mold clamping device is performed, wherein

• mold clamping conditions, including a predetermined mold gap, a predetermined mold clamping force, a predetermined back pressure for the movable mold, a predetermined mold closing pressure, and a predetermined mold closing pressure adjustment condition associated with a compression state of the molding material, are set beforehand,
• at the time of molding, the injection filling process for causing the injection device to inject and fill the molding material is performed for the mold of the mold clamping device for which the mold clamping conditions have been set, and
• after completion of the injection filling process, the compression process is performed on the basis of the mold clamping conditions including the mold closing pressure adjustment condition,
• wherein the molding material is a thermosetting resin material, and
• wherein the compression state of the molding material includes at least one of:
• a size of the mold gap between the movable mold and the stationary mold;
• a magnitude of the mold closing pressure;
• and
• a magnitude of viscosity of the molding material.