Patent ID: 7041247

Claim:
An injection compression-molding method for producing a molded article using an injection compression molding apparatus comprising two mold supporting plates facing each other, wherein at least one of the two mold supporting plates is movable toward and away from the other of the two mold supporting plates, and wherein each of the mold supporting plates supports a mold, a clamping mechanism for moving at least one of the two mold supporting plates toward and away from the other of the two mold supporting plates so as to set the molds to an intermediate clamped state for injection of melted resin into a cavity defined by the molds and set the molds to a final clamped state during or after the injection of the melted resin, and a plurality of parallelism retaining mechanisms arranged around the molds for retaining parallelism between the molds in the intermediate clamped state, wherein each parallelism retaining mechanism includes a positioning cylinder attached on the one mold supporting plate and extending toward the other mold supporting plate, the positioning cylinder having a rod expandable in a mold clamping direction, and a contact unit attached on the other mold supporting plate and extending toward the one mold supporting plate, further comprising a fine adjuster attached at a distal end portion of the contact unit and operative to move toward and away from the positioning cylinder in the mold clamping direction so as to come into an adjusted specified position with respect to the positioning cylinder, the method comprising a step of setting all of the parallelism retaining mechanisms at a specified distance by operating the distal end portion of the contact unit before starting the molding operation.