Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Reexamination Certificate
2006-08-29
2006-08-29
Davis, Robert (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
C425S457000, C425S208000, C425S562000, C264S050000, C264S053000
Reexamination Certificate
active
07097438
ABSTRACT:
A foaming agent charging and mixing device comprises at least one mixing device and one foaming agent metering device, wherein the foaming agent charging and mixing device may be arranged between an plasticating screw and a mold. In order to improve the foaming agent charging and mixing device in a manner that the mixing with foaming agent is facilitated and at the same time a risk of obstruction of the foaming agent metering device is avoided, the foaming agent metering device is alternately opened and closed through the mixing device during operation thereof for supplying foaming agent to the plastic melting.
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Herrmann Juergen
Jaeger Ansgar
Prigandt Marco
Schuermann Erich
Seidel Joerg
Davis Robert
Demag Ergotech GmbH
Rao G. Nagesh
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