Red Sun Industry Limited

The aquafeed manufacturing industry is widely recognised as one of the fastest expanding agricultural industries in the world. Fish meal is the main protein source in aquafeed, but supply is limited, which means that alternative sources need to be used. From a processing point of view extrusion is the most efficient way of turning plant protein into fish feed. single screw extruder have a definite advantage in this. In this article we have a closer look at corotating twin screw extruder. 
Twin screw extruders were first used in the 1950s for manufacturing of thermoplastics. Only
since the 1970s have these machines been used for feed and food products. Twin screw extruders (TSE) can be classified by their mechanical way of working into co-rotating (both screws turn same direction) and counter rotating (one screw turns right and the other turns left) and the screw extruder configuration into intermeshing self wiping and non-intermeshing. A TSE compared to a single screw extruder has a much wider operating range in terms of use of moisture, internal fat, mechanical energy input and product size.