Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material
Reexamination Certificate
2007-10-31
2011-10-25
Heitbrink, Jill (Department: 1743)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling heat transfer with molding material
C264S328160, C425S143000, C425S547000
Reexamination Certificate
active
08043537
ABSTRACT:
There are provided an injection molding system, a computer program, a method of injection molding, and an injection molding machine capable of performing precise temperature control of a mold even when there is a delay in temperature increase of the mold in heat supply with a heating medium. The temperature control is performed so that temperatures of a fixed mold and a movable mold are maintained between an upper limit TU and a lower limit TL of a predetermined temperature range after start of injection of resin during an injection molding cycle. The temperature control of the fixed mold and the movable mold is performed only by switching ON/OFF supply of the heating medium, and cooling with a cooling medium is not performed. In a process of cooling the resin, the temperature control is performed so that the temperatures of the fixed mold and the movable mold are maintained between an upper limit TUa and a lower limit TLa of a temperature range effective for resin annealing by stop of supply of the cooling medium and the supply and stop of the heating medium.
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Hattori Michitaka
Imaeda Satoshi
Kariya Toshihiko
Nozaki Shigeru
Shikase Yoshio
Heitbrink Jill
Mitsubishi Heavy Industries Plastics Technology Co., Ltd.
Westerman Hattori Daniels & Adrian LLP
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