Colormax Ltd. of Telford, England, is offering two screwless feeding mechanisms to dose free-flowing masterbatch or additives into the process screw — the Micro Feeder (B110) and the Posimax (B200).
The Micro Feeder uses a simple, induced-flow rotating cone, so it can dole out from just a few granules up to 6.6 pounds of material an hour. The controller allows easy calibration of the desired additive ratio, which is linked to the injection screw back-time or the extruder speed tachometer.
The Posimax uses positive displacement feeding. It has only one moving part, a rotating vertical disc for feeding the material via a rotating channel.
K-Tron International Inc. of Pitman, N.J., owns Colormax.
Tel. (856) 256-3045, e-mail [email protected]