Z-Mixer™ Screw The Nordson XALOY Z-Mixer™ Screw is the best dispersive mixing screw in the industry. Its patented geometry utilizes mechanical potential in the melt stream to efficiently disperse additive packages. The unique "Z" formation channels the melt stream to high shear areas for a more thorough chaotic mixing action. Rating: When compared to a single stage, general purpose screw of comparative root geometry, the Z-Mixer screw delivers a mixing quality of 5 times better. Most crystalline resins with color or Excellent quality & appearance. additive packages that demand optimum dispersive Enhanced product performance. Better physical properties. Successful applications in injection molding utilizing Reduced scrap rates. a variety of resins including PE, PP, PA and ionomer. Advantages: No marbling or streaking. Strong weld lines.