Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2006-09-29
2010-10-19
Hug, Eric (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S328800, C425S557000, C425S558000, C425S559000, C425S560000, C425S561000
Reexamination Certificate
active
07815838
ABSTRACT:
In a method of operating an injection molding machine of a type having an injection plunger for pushing melt from an injection space anteriorly of an injection plunger into an injection mold, a plasticizing screw of an extruder is continuously operated to continuously feed melt through a melt channel into the injection space. A passage through the melt channel is closed to allow backup of melt backwards into the extruder, and the injection plunger is moved forward to inject a shot amount from the injection space into the injection mold.
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Day Ursula B.
Feiereisen Henry M.
Hug Eric
KraussMaffei Technologies GmbH
Minskey Jacob Thomas
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