snacks making machine puff snack food
In the process of extrusion and expansion, the material is placed in the sealed barrel equipped with the screw (main shaft). With the forced advance of the two meshing screws, the material is in high temperature (the temperature can reach 150-200 ℃) due to the mechanical calendering, the internal shear force of the material and the heat energy from the outside of the barrel; and because the material is in the sealed state, with the change of the sealing volume and The high temperature (pressure up to 10kg/cm above) causes the material to gradually become a gel state of heat flux, and obtains a lot of energy to change the original physical and chemical properties.
When the material is extruded into normal temperature and pressure by die head, it will go in the direction of increasing the degree of confusion (i.e. increasing entropy). In this way, not only the volume of the material increases, but also the function of various enzymes, starch, protein and other nutrients are degraded to varying degrees, and the soluble components increase. It makes the protein molecules change from spherical to chain, and reorganize, with a fleshy fiber state.
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