Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
2004-03-30
2008-12-16
Heitbrink, Jill L (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
C264S219000, C425S145000, C700S098000, C700S200000
Reexamination Certificate
active
07465416
ABSTRACT:
An object of the present invention is to provide a method for designing a mold and a method for producing an injection molding in which a mold clamping force or weld line occurrence can be more accurately controlled in the case of injection molding of a resin product. In the case where an injection molding is carried out using a mold having a plurality of resin inflow conduits G1, G2, G3to a cavity CV, a mold design parameter in relation to at least one of the arrangement, the shapes and the sizes of the resin inflow conduits is determined by the combination of a numerical analysis method for calculating an injection molding process and a computer-aided optimization method, for the purpose of obtaining a preferable injection molding condition. Thereby the mold design parameter can be promptly and accurately calculated without repetition of trial and error manually.
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Hirota Tomoo
Nagaoka Shinichi
Togawa Yoshiaki
Heitbrink Jill L
Sughrue & Mion, PLLC
Sumitomo Chemical Company Limited
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