Wet production puffer is the use of steam (general pressure in 0.3-0.4mpa temperature 140-150 ℃) in the tempering device to preheat the material to 70-100 ℃ between, and then supplemented by the puffer self-generated heat and screw cylinder external heating (can be steam water pipe, can also be an electric heater) of the production mode, commonly used in the production of aquatic feeds, pet food, puffed corn feed, soybean feed and so on.
Floating Feed Extruder expanding cavity consists of two screws, two screws combined into a group of meshing area, the material in the expanding cavity parallel running at the same time, increase the effect of mixing and shearing, so it is more suitable for the production of mixed formula type of feed than a single screw. His advantages are: low speed, generally 200-300 rpm; 2, the two screws increase the mutual shear, so the material homogenization is high, stable quality.
