Used Dynisco LME-120 Laboratory Mixing Extruder

Dynisco LME-120 Laboratory Mixing Extruder

The Dynisco LME Laboratory Mixing Extruder is a laboratory tool developed to evaluate the processability of a variety of plastics and rubbers from very fine powders to coarse materials prior to production. The specimen material is placed in a cooled hopper where it falls onto the hot surface of a cylindrical rotor. As the rotor turns, the specimen drags against the inclined surface of the stationary scroll and moves toward the outlet die. As the specimen collects in the radial gap, it is compressed by the converging space between the scroll surface and the end of the header case. The specimen is melted through heat conduction created by the mechanical work of the turning rotor. When sufficiently melted, the specimen moves to the axial gap where it is rotationally sheared between the end of the rotor and the inside of the case. This motion causes a centripetal pumping effect, enabling the specimen to flow to the outlet die and exit through the orifice.

From very fine powders to coarse materials, the LME will meet many extruding needs. The LME possesses a movable header and dial gauge that allows for constant mixing adjustability. While in operation, the rotational shearing (mixing) is controlled by adjusting the distance between the end of the rotor and the inside header. 

120V, 50/60Hz