Puffed snack is a brittle food with a smooth texture and a rich grain flavor. With the improvement of national living standards and changes in lifestyle, various cereal puffed foods have quickly entered millions of households as a convenient, fast, and nutritious leisure snack. Puffing machine is a type of equipment used for processing puffed foods, such as rice, corn, soybeans, wheat, etc., which are commonly used in daily life. Its main working principle is to convert mechanical energy into heat, and use the heat generated by the rotation of the machine to squeeze and cook food. The obvious characteristic of puffed food is that its volume increases.

The working principle of a twin-screw puffing machine is that the twin-screw has two pairs of screws that mesh with each other and rotate in the same direction. They jointly play the roles of conveying, friction extrusion, and heating. By relying on the principle of positive displacement to input materials, they are forcibly conveyed, and there is little pressure reflux, thus solving the problem of strong conveying in single screw puffing machines. The twin-screw puffing machine integrates multiple functions such as compression, mixing, blending, shearing, melting, sterilization, puffing, and forming, and is completed in a very short time. The change of mold can change the shape and size of products. The twin-screw extruder can produce a wide variety of food products on the production line, including snack food, breakfast cereal food, sandwich puffed food, instant Rice noodles, soup, bread slices, organized vegetable protein, candy, flavoring ingredients, pet food, fish and shrimp feed, etc., and can develop countless new types of food.