Puffed Snack Production Machine

Compared with a single screw extruder machine, a double-screw extruder has a better forced feeding effect. Two screws meshing with each other rotate in the same direction and finish the conveying task, friction extrusion, and heating. The screws convey materials according to the principle of positive displacement.
The powdery raw materials are extruded from powder to paste, and the raw fiber is partially degraded and refined. This process can not only effectively kill microorganisms and bacteria, but also make paste materials eject from the gap of the mold under the action of strong pressure difference. During this time, the materials instantly form extruded products with a loose structure and good appearance.

Extrusion technology is one of the most important processes used in the food industry for making puffed snack food. Extrusion is a process that is used to convert basic raw materials such as corn flour, wheat flour, and other starch-based ingredients into a puffed, shelf-stable product. The extrusion process starts with mixing raw materials with water and other ingredients in a twin-screw extruder or a single-screw extruder. The mixed ingredients are then forced through a die in the extruder which transforms the dough into a specific shape and texture. When the product leaves the die, it may have to be air dried, fried, coated, or otherwise treated to become a finished product.