Nowadays, many snacks like by children are mostly made by food puffing machine, and there are all kinds of tastes. Even some adults like it very much. But do you know how it is puffed? Let's take a look at the process of food puffing machine in detail.
Puffing food has five processing sections: mixing → conveying → extrusion → drying → coating.
First, mixing - its function is to mix the dry material evenly with water to achieve the pre-wetting effect, to provide some time for the hydration of starch, this process has a great impact on the expansion effect of the expander. Generally, the total water content of puffing material is 13-20%, which is finished by the mixing machine.
Ii. Conveying - the mixed materials are transported from the mixing machine to the feeding hopper of the food puffing machine. Long bucket elevator, screw conveyor or vacuum conveyor device.
Three, extrusion - this is the key to extrusion extrusion processing. The extruder cooks the material and converts it into a plastic melt under certain pressure. The cooked material passes through a small mold hole to form a certain shape under the action of pressure, and then the mold hole is extruded to produce an expanded shape.
The cutting device cuts the continuous discharge into the desired size of the product. The operating device of the puffing machine can be used to control the density and texture of the direct puffing product. The processing parameters which can be controlled separately are water content, feed rate, barrel temperature and screw speed (if the speed is variable).
The formwork resistance is also a parameter that can be controlled independently, but it will not change during the stable process after being assembled by the puffing machine.
Four, dry - directly puffing food generally after extrusion processing for drying. The water content of the raw material of expansion machinery is 13%-16%. After extrusion, the water content drops to 8%-12% due to steam flash and evaporation. Then, the water content is reduced to 2-5% or less to form the environment needed for crisp texture and stable price life.
V. Paint - The puffed and dried product shall be sprayed with oil and flavoring agent. A coating of oil and flavoring agents usually accounts for about 20-35% of the weight of the finished product.
Above is the food puffing machine puffing process, see this, friends do not feel very magical. If you need food puffing machine, please contact us.
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