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AssigneeRicoh Company, Ltd.
InventorsYASUO YAMANAKA, JUN WATANABE, KIYOTAKA SAWADA, TOSHIHARU HATAKEYAMA, HIDENOBU KISHI
Estimating the term…
A plastic molding having high accuracy includes at least one transfer surface and at least one imperfect transfer portion having a concave or convex shape. The mold assembly includes a cavity into which molten resin is injected, a slide cavity piece which is capable of being slid at a prescribed time so that a gap is formed between the resin and the slide cavity piece, and a vent hole for supplying a compressed gas in the cavity. A method of producing the plastic molding includes the steps of heating resin to provide a molten resin, injecting the molten resin into a cavity of a molding, applying a resin-pressure to the molten resin, cooling the resin, sliding the slide cavity piece, and opening the mold assembly.
A method of producing a plastic molding, comprising the steps of:
A mold assembly for producing a plastic molding, the mold assembly including a cavity having a prescribed volume, at least one transfer surface, and at least one non-transfer surface other than the transfer surface, the mold assembly comprising:
A plastic molding comprising:
An injection molding method of producing a plastic molding having at least one transfer surface and at least one imperfect transfer portion, comprising a step of injecting [wherein] a resin [is injected] into a cavity of a mold assembly.
A method of producing a plastic molding having a at least one transfer surface and at least one imperfect transfer portion, comprising the steps of:
A method of producing a plastic molding having a at least one transfer surface and at least one imperfect transfer portion, comprising the steps of:
Dependencies are inferred from the claim text.