Plastic and nonmetallic article shaping or treating: processes – With step of cleaning – polishing – or preconditioning...
Patent
1995-01-27
1996-03-12
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
With step of cleaning, polishing, or preconditioning...
2641761, 26421123, 425204, 425205, 425208, 425226, B29C 4750, B29C 4756
Patent
active
054983800
ABSTRACT:
A plastic resin kneading/extruding method using one auxiliary equipment including a screw drive source and a resin feed hopper, and a plurality of extruding units each including a cylinder with a feed opening and a screw and having their operations composed of an extruding step of kneading and extruding the plastic resin and a cleaning step of cleaning the screw and the cylinder, characterized in that the extruding step and the cleaning step are sequentially alternated for each of the extruding units. Thus, it is possible to realize a kneading/extruding method and an apparatus therefor, which can accomplish synthetically continuous extruding operations without the extruding step zone being interrupted by the cleaning step zone and which can eliminate the defects of the prior art thereby to have a high extruding efficiency.
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Friends of Freesia Co., Ltd.
Thurlow Jeffery R.
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