Plastic article or earthenware shaping or treating: apparatus – Stock pressurizing means operably associated with downstream... – Including restriction upstream of shaping orifice and...
Reexamination Certificate
2007-11-20
2007-11-20
Davis, Robert (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Stock pressurizing means operably associated with downstream...
Including restriction upstream of shaping orifice and...
C137S56100R, C239S553500, C239S562000, C239S590500, C425S461000, C425S466000
Reexamination Certificate
active
10168842
ABSTRACT:
This invention relates to the field of multiple layer plastic extrusion, and more particularly to assemblies in which thin or micro-layers of polymer material are formed which polymer material may be from two or more individual extruders, and delivered to a multilayer combining adapter in association with an extruder die or other utilizations. The combining adapter of this invention is referred to herein as a flow velocity profiler (FVP) and includes a cartridge assembly body that is formed with individual cavities that receive one of a plurality of individual precision layering inserts. Changing individual inserts is less time intensive than changing an entire body as required in prior art.
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Montalbano John S.
Suppon Frederick C.
Timmons Anton L.
Burr & Brown
Davis Robert
Davis-Standard, LLC
Luk Emmanuel S
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