INJECTION MOLDING APPARATUS
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United States of America Patent
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app pub date -
Aug 10, 2016
filing date -
Aug 19, 2015
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Abstract
An injection molding apparatus includes: an injection cylinder having a tip opening communicating with a cavity of a molding die; a resin supply portion configured to supply thermoplastic resin to a space in the injection cylinder; a reinforced fiber supply portion configured to supply fiber reinforced aggregates to the space in the injection cylinder; and a screw rotatably disposed in the injection cylinder, the screw being configured to compress and knead the thermoplastic resin in the injection cylinder and defibrate the fiber reinforced aggregates so as to disperse the fiber reinforced aggregates in the thermoplastic resin. The resin supply portion and the reinforced fiber supply portion are provided as different bodies. The reinforced fiber supply portion is placed on a tip opening side relative to the resin supply portion. The screw has a uniform groove depth.
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