Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Non-Intermeshing Twin-Screw Extruders

Because of the non-zero apex area, the output of the NOCT extruder will be less than twice the output of a single screw extruder with the same screw diameter. [Pg.730]

The first theoretical study of the conveying process in non-intermeshing twin screw extruders was made by Kaplan and Tadmor [17]. They simplified the actual geometry (see Fig. 10.42) to a flat plate model. [Pg.731]

The flat plate model involves three plates the two outside plates representing the screw surface and the middle plate representing the barrel see Fig. 10.43. [Pg.731]

The center plate has slots that run perpendicular to the circumferential velocity Vi,. The tangential slot width is  [Pg.731]

This model yields the following output-pressure relationship for Newtonian fluids  [Pg.732]

This location can be used for, for instance, devolatQization or for an easy feeding of an extra component However, it should be realized that at increasing throughput the filling of the extruder increases and the pressureless zone will disappear. [Pg.137]

The conveying action of this type of machine can be derived from a three-parallel-plate model, in which the outside plates represent the screw surfaces and the middle plate (with zero thickness) represents the barrel. The apex is accounted for by parallel slots in the middle plate, perpendicular to the circumferential [Pg.137]


Bigio D, Wang K. Scale-up rules for mixing in a non-intermeshing twin-screw extruder. Polym Eng Sci 1996 36(23) 2832-2839. [Pg.366]

A. Kaplan and Z. Tadmor, Theoretical Model for Non-Intermeshing Twin Screw Extruders, Polym. Eng. Sci., 14, 58-66 (1974). [Pg.317]

S. Satija and C. S. Tucker, Effect of Screw Root Profile on PMMA Melting in Counterrotating Non-intermeshing Twin Screw Extruder, SPE ANTEC Tech. Papers, 40, 248-255 (1994). [Pg.596]

K. Nguyen and J. Lindt, Finite Element Modeling of a Counterrotating, Non-intermeshing Twin Screw Extruder, Polym. Eng. Sci., 29, 709-714 (1989). [Pg.596]

In the most simplistic view, the counter-rotating non-intermeshing twin-screw extruder could be viewed as two tangential single-screws sitting side by side in a barrel with an open apex area between them, see Fig. 10. Unlike intermeshing twin-screws, the non-intermeshing... [Pg.3173]

Foster, R.W. Lindt, J.T. Bubble free devolitaliza-tion in counter-rotating non-intermeshing twin screw extruders. Polym. Engng. Sci. 1990, 30 (7), 424-435. [Pg.3178]

RJ Nichols, F Kheradi. Reactive Modification of Polypropylene with a Non-Intermeshing Twin Screw Extruder. 3rd Chemical Congress of North America, Toronto, June 1988. [Pg.329]

Thus, the output per screw for a non-intermeshing twin screw extruder can he... [Pg.738]

The following three tables give a brief overview of important aspects of twin screw extruders. Table 10.7 compares intermeshing to non-intermeshing twin screw extruders. [Pg.758]

Table 10.7 Comparison of Intermeshing to Non-Intermeshing Twin Screw Extruders... Table 10.7 Comparison of Intermeshing to Non-Intermeshing Twin Screw Extruders...
Figure 6.21 Two different configurations for non-intermeshing twin-screw extruders staggered configuration (top) and matched configuration (bottom). Figure 6.21 Two different configurations for non-intermeshing twin-screw extruders staggered configuration (top) and matched configuration (bottom).

See other pages where Non-Intermeshing Twin-Screw Extruders is mentioned: [Pg.113]    [Pg.880]    [Pg.118]    [Pg.615]    [Pg.698]    [Pg.730]    [Pg.733]    [Pg.735]    [Pg.739]    [Pg.742]    [Pg.213]    [Pg.978]    [Pg.144]    [Pg.194]    [Pg.137]    [Pg.137]    [Pg.137]    [Pg.145]   
See also in sourсe #XX -- [ Pg.730 ]




SEARCH



INTERMESH

Intermeshed

Intermeshing

Intermeshing screws

Intermeshing twin-screw extruders

Screw extruders

Twin screw

Twin-screw extruder

© 2024 chempedia.info