Foaming agent charging and mixing device

Details Foaming agent charging and mixing device Foaming agent charging and mixing device

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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