Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Reexamination Certificate
2006-12-19
2006-12-19
Kuhns, Allan R. (Department: 1732)
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
C425S071000, C425S073000, C425S145000, C425S325000, C425S387100, C425S466000, C425S81700C
Reexamination Certificate
active
07150614
ABSTRACT:
Disclosed is an apparatus and a corresponding method for producing a continuous foamed extrudate product in which the extrusion and initial expansion of the foamed extrudate is conducted within a chamber under a partial vacuum. The foamed extrudate is then removed from the chamber through an orifice submerged within a liquid baffle. The dimensions of the foamed extrudate are monitored as it approaches the orifice and, if necessary, the effective sizing of the orifice is adjusted through the movement of a pair of side gates and a single vertical gate arranged external the orifice to match opening to the foamed extrudate and impede the flow of liquid into the chamber through the orifice.
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Eckert Inger H.
Gasaway Maria C.
Kuhns Allan R.
Owens Corning Fiberglas Technology Inc.
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