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November 1, 2006

1 Min Read
Mixing screw for extrusion and injection

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The Eagle low-shear mixing screw reportedly yields outstanding color mixing and melt quality without increasing melt temperature, burning, or degradation of material while running at very high rpm. The screw has successfully processed PP, HDPE, PC, PS, ABS, SAN, rigid and flexible PVC, nylon, ETFE, POM, PPO-PPE, HIPS, and other materials. It can be designed to process any resin for any particular application.

The mixing screw is said to improve production rates by more than 25%, reduce part reject rates from more than 5% to less than 1%, and reduce the amount of color concentrate required to achieve optimum color mix from 5% to 3%. The Eagle Mixer is used with custom-designed single-flighted screws, in addition to barrier designs for special applications. The Eagle Barrier combines the characteristics of the mixing screw with the melting efficiency of the barrier screw design. The barrier section ?solid? and ?melt? channels effectively melt all resins, especially difficult-to-melt crystalline materials. The material is then conveyed through the mixer to produce a high quality, isothermal melt.

The barrier screw processes difficult materials, whether injection molded, blowmolded, or extruded. The design of the barrier portion of the screw and the mixer itself is dependent upon the type of material and process.

Westland, Wichita, KS(316) 721-1144; www.westlandusa.com

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