What Is Twin Screw Extrusion?

Twin screw extrusion is a process where a mixture of raw materials, called extrudate, is forced through the opening of a perforated plate or die to produce a certain amount of food in a specific shape. We do this by using a fixed barrel container to hold the extrudate and two screws rotating side by side to push the extrudate through the opening. The resulting product is then cut to specific sizes and dried. By adjusting a few factors in the extrusion process, such as pressure, temperature, and humidity levels, products of varying textures and colors can be produced.