FOAMING AGENT CHARGING AND MIXING DEVICE

摘要

A foaming agent charging and mixing device comprises at least one mixing mea ns and one foaming agent metering means, 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 means is avoided, the foaming agent metering means is alternately opened and closed through the mixing means during its operation for supplying foaming agent to the plastic melting.