Operational characteristics of the co-rotating twin-screw extruder

  • N. D. Frame


Extruders come in a wide variety of sizes, shapes and methods of operation. There are hydraulic ram extruders, in which a piston forces dough through a die, roller types, in which two rolls rotate towards each other to force dough through a die, and screw types (both single and twin) in which a rotating screw pumps dough through a die. Extruders are used in food processes because they provide mechanical energy for cooking and melting; by pumping they force dough through a shaped opening, and in some cases they can be used for intense mixing for dispersion and homogenisation of ingredients.


Product Temperature Screw Speed Specific Energy Consumption Screw Extruder Breakfast Cereal 
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© Springer Science+Business Media Dordrecht 1994

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  • N. D. Frame

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