Ron Klein, president of Somerset, N.J.-based Scientific Process & Research Inc., has earned patent number 6,152,592 for his Left Hook Mixer.
The mixing screw features a repeated pattern of raised, L-shaped elements, arranged in rows at right angles from one another. The elements face upstream, with a curved, concave contour that intercepts and disrupts the melt flow, forcing it downstream. The mixer provides a high degree of turbulence without the excessive, damaging shear normally needed to obtain a high level of mixing action.
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