Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling fluid pressure in direct contact with molding...
Reexamination Certificate
2006-07-04
2006-07-04
Kuhns, Allan R. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling fluid pressure in direct contact with molding...
C264S051000, C264S102000
Reexamination Certificate
active
07070720
ABSTRACT:
A die-expanded molding apparatus comprising starting material bead supply for supplying beads on a current of air from a tank through a packer into a cavity formed by a core and cavity molds; a plurality of air expulsion devices having air pressure-adjusting components communicating with the cavity, a dual-system air expulsion device being such that steam chambers on the back side of the core mold and the cavity mold are used as the air pressure-adjusting components, each communicating with the cavity through through-holes formed in the core and cavity molds, respectively; an air expulsion device having one or more air pressure-adjusting components communicating with a clearance between the core and cavity molds; and a control for controlling the air pressure in each of the air pressure-adjusting components to be pressurized less than the pressure in the tank.
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Ida Kiyotaka
Kobayashi Yoshiyuki
Nakajima Tomio
Nohara Iwao
Sameshima Masahiko
Daisen Industry Co., Ltd.
Kaneka Corporation
Kuhns Allan R.
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