Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling fluid pressure in direct contact with molding...
Reexamination Certificate
2005-08-16
2005-08-16
Ortiz, Angela (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling fluid pressure in direct contact with molding...
C264S050000, C264S051000, C264S328170, C425S00400R, C425S146000, C425S208000
Reexamination Certificate
active
06929763
ABSTRACT:
The invention provides an injection molding method comprising supplying a gas into a molten resin in a plasticizing cylinder and injecting the molten resin having the gas dissolved therein, wherein when the resin is being plasticized, a gas space with a predetermined gas pressure is formed within the plasticizing cylinder in a gas supply section and the pressure at the front end of the screw is adjusted to be at least equal to the gas pressure in the gas space and within a range where the gas space can be maintained within the plasticizing cylinder in the gas supply section. According to the invention, the necessary amount of gas can be dissolved in the molten resin with good reproducibility in a quantitative manner.
REFERENCES:
patent: 3787542 (1974-01-01), Gallagher et al.
patent: 3856442 (1974-12-01), Gallagher et al.
patent: 3981649 (1976-09-01), Shimano et al.
patent: 3986709 (1976-10-01), Vermeulen
patent: 4043715 (1977-08-01), Hendry
patent: 4134714 (1979-01-01), Driskill
patent: 4185060 (1980-01-01), Ladney, Jr.
patent: 4211523 (1980-07-01), Hunerberg
patent: 4733970 (1988-03-01), Yokana
patent: 5098267 (1992-03-01), Cheng
patent: 5334356 (1994-08-01), Baldwin et al.
patent: 6602063 (2003-08-01), Cardona
patent: 4-20467 (1979-07-01), None
patent: 63-57213 (1988-11-01), None
patent: 9-323338 (1997-12-01), None
patent: 11-34130 (1999-02-01), None
patent: 2000-141435 (2000-05-01), None
patent: 2001-113556 (2001-04-01), None
patent: 98/52734 (1998-11-01), None
Asahi Kasei Kabushiki Kaisha
Ortiz Angela
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