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Wave Dispersion Screws

The first wave-dispersion-type screw was developed and patented by Kruder in 1975 [18], and the device was trademarked as the Wave screw. Numerous other wave dispersion screws were developed later based on Kruder s design. The term wave dispersion screw refers to screws with metering sections that have two or more channels with a flight between them that is selectively undercut to allow the dispersion of solid polymer fragments and molten resin. Several commercially available screws utilize this type of technology and are discussed in this section. These screws include Double Wave screws, Energy Transfer screws. Variable Barrier Energy Transfer screws, DM2 screws, and Fusion screws. [Pg.633]

Dispersive mixing also occurs in the double wave mixing screw see Fig. 8.81. [Pg.601]

The double wave screw (Fig. 5.17 ) provides both distributive and dispersive mixing. This screw has a second flight in the metering zone. The depth of both channels alternately increases and decreases. When the channel depth is shallow, melt is sheared and can be transferred into the adjacent channel. [Pg.343]


See other pages where Wave Dispersion Screws is mentioned: [Pg.633]    [Pg.633]    [Pg.633]    [Pg.635]    [Pg.637]    [Pg.639]    [Pg.641]    [Pg.643]    [Pg.645]    [Pg.649]    [Pg.633]    [Pg.633]    [Pg.633]    [Pg.635]    [Pg.637]    [Pg.639]    [Pg.641]    [Pg.643]    [Pg.645]    [Pg.649]    [Pg.235]    [Pg.622]    [Pg.635]    [Pg.635]    [Pg.486]    [Pg.586]    [Pg.218]    [Pg.333]    [Pg.618]    [Pg.221]    [Pg.55]   


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Dispersive waves

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