Mixing screws

Figure 1.4 Schematic diagram of a single screw mixing device.

C. G. Gogos, M. Esseghir, D. W. Yu, D. B. Todd and J. Curry, The Twin-screw Mixing Element Evaluator On-line Performance Evaluation of Modular Twin-screw Mixing Elements, SPE ANTEC Tech. Papers, 40, 270 (1994). 

Fig. 10.4 Hexalobal, intermeshing, counterrotating twin-screw mixing screw elements. [Reprinted by permission from W. C. Thiele, Counterrotating Intermeshing Twin Screw Extruders, in Plastics Compounding—Equipment and Processing, D. B. Todd, Ed., Hanser, Munich, 1998.]...

Finally, reactive processing in full nonisothermal, twin-rotor channel flows has not been solved for all but full bilobal kneading-disk sequences and screw-mixing... 

T. Ishikawa, T. Amano, S. I. Kihara, and K. Funatsu, Flow Patterns and Mixing Mechanisms in the Screw Mixing Element of a Corotating Twin-screw Extruder, Polym. Eng. Sci., 42, 925-939 (2002). 

Fig. 11.31 Schematic representation of the Twin Screw Mixing Element Evaluator (TSMEE) in (a) the melt-melt (M-M) mode, and (b) the dissipative mix-melting (DMM) mode. The last section of both the M-M and DME modes consists of two separate HBRs. The mixing element sequences are a design variable. [Reprinted with permission from Proceedings of the Sixth Semi-annual Meeting of the Polymer Mixing Study, Polymer Processing Institute, Hoboken, NJ (1993).]...

SSMEE single screw mixing element evaluator... 

The patent vacuum has also prompted new applications from several areas. Apparatus patents are among the foremost of these, i.e., numerous variants of innovative screw, mixing, and kneading elements from mechanical engineering companies, while process patents employing co-rotating extruders are proposed by the chemical industry. 

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