Food Extruders are used for converting large variety of food cereals for extruding various shapes which are pellets, RTE Snacks, Breakfast cereals, Precooked flours and starches, Expanded products such as Soy Nuggets, Aqua feed, and various Pasta products viz. macaroni, vermicelli, spaghetti

Following categories of Extruders are used for producing the above products:
  1. HTST High Temperature Short Residence Time) Cooker or Gelatanizer
  2. High Shear Adiabatic Extruders.
  3. Low Shear Extruders (Formers).
  4. Collette Extruders.

Pellets are half-cooked products or “third generation” Snacks, and need to be fried or heated in hot oil or air for complete expansion and consumption. Raw pellets are produced using HTST and Former or Product Densification Unit (PDU)- Raw-materials (Wheat, Rice, Potato, etc.) being first cooked, followed by cooling and densification in the Former. The Former is fitted with various die inserts for forming the shape of pellet, e.g. Wheels, Tubes, Stars, Etc. In addition to conventional 2-D shapes mentioned, 3-D or hollow pellets are formed using special die units and Cutter.

Direct Expanded Snack products are produced using High Shear Adiabatic Extruders, using various Food Cereals which are fully expanded immediately as they emerge from the die attached to the Extruder. They are used for producing RTE Snacks, Baked Corn Curls or Collette, Soy Nuggets, Aqua Feed (floating), etc. For producing sinking aquatic feeds, combination of Cooker (Gelatiniser) and PDU is employed.

Low Shear Extruders or Formers are used for producing various Pasta products like Macaroni, Spaghetti, Vermicelli, etc. They are also used in producing modified starches from corn, potato, tapioca, etc. using specially designed die head assembly to produce pre-gelatinised or modified starch.

In all the above three processes, product has excess moisture and the same is removed by passing in Dryers before the product cools down for safe packing. The Drying Equipment should include a Pre-Dryer to remove some moisture before final Drying in the Main Dryer- to permit safe handling without sticking of products. Continuous Belt Driers with Conveying Belts arranged in multiple decks are usually employed to operate continuously.

The Fry type Collette Extruder is a specialized Extruder designed for producing Fried Corn Curls/Collette. The working principle is entirely different from normal Screw Extruder, as the raw-material (corn meal or grits) gets cooked between two circular bronze discs (one is fixed and other is rotating, there is no die) and randomly cut by stationery knife on periphery. A short, feed screw feeds the de-germinated corn meal or grits between the 2 bronze discs where the material gets cooked due to high shearing forces and is cut into suitable lengths as it emerges out of the gap between the discs, by the knives. The product is fried in hot oil and applied with seasonings in a coating drum.

For Range of Food Extruder being manufactured by us, download our brochure following “Download” link.

800 Kg Capacity with Pre- Conditioner   Cooker Extruder(300 kg/hr.)  
Extruder for producing Direct Expanded Snacks.   Belt Drier  
Direct Expanded Extruder for Floating Pellets.   Mini Extruder 30 Kg capacity for Puff snacks  
Coating Drum      
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