What are the advantages of twin-screw food extruder

Since 1936, when a single-screw extruder was used for the production of convenience food and successfully produced puffed corn rings [1], the many unique processing methods and unexpected effects provided by extrusion technology have been recognized, and research and application of this technology have gradually been carried out.Especially in the food industry, the application of extrusion technology is increasing, with a wide variety of snack foods, breakfast foods, functional foods, and baby foods emerging in large quantities.Due to its delicious taste and easy digestibility, it is highly favored by consumers and has become a new economic growth point in the food industry. Countries such as the United States, Japan, and France have conducted early research on extrusion technology and have done extensive work on the extrusion mechanism, including the changes in the microstructure and physicochemical properties of raw materials after extrusion, as well as the impact of raw material properties on product quality. This has enabled the technology to be applied not only in the simple production of grain-based foods but also in the production of livestock feed, fish feed, and plant-based tissue protein [1].Although the application of extrusion technology in our country has not been long, it has been rapidly promoted and applied.Using this technology to produce puffed foods, such as filled rolls, corn breakfast crisps, etc., the pretreatment of vegetable oil demonstrates the unique charm of this technology. Researchers and engineers continuously conduct in-depth studies on extrusion mechanisms, material formulations, etc., laying the foundation for the application of extrusion puffing technology in new fields.

The application of new technologies is closely related to the new mechanical equipment involved. Due to the rapid development of science and technology, extrusion equipment has evolved from early single-screw extruders to twin-screw extruders. With continuous research on the structural design, process parameters, and extrusion mechanisms of extruders, the performance of twin-screw extruders has been increasingly improved, playing a positive role in enhancing product quality and expanding the application fields of extrusion technology. Currently, twin-screw extruders such as the TX model produced by Wenger Manufacturing in the United States and the Kei model produced by Kowa Kogyo in Japan can achieve automatic adjustment and digital display of temperature, pressure, and speed, and have reached a considerable scale [2]. Although the development of extrusion equipment in China started relatively late, after more than a decade of unremitting efforts by engineering and technical personnel, various types of extrusion equipment and their supporting products have been successfully developed on the basis of introduction, digestion, absorption, and bold innovation. The full set of multifunctional extrusion twin-screw full expansion equipment can meet the requirements of process parameters, with stable performance and convenient operation and maintenance.