Rice puffed machine（also called rice puff maker, rice extruder）is a food processing equipment that uses heat, pressure or screw extrusion to expand rice (and other grains) into light, crispy puffed snacks. It is widely used in small workshops and industrial production lines.
1. Main Types & Working Principles
(1) Screw Extrusion Type (Most Common)
- Principle: Raw materials (rice flour, whole rice) are fed into a screw barrel, heated and sheared by the rotating screw, then extruded through a die at high pressure. The material expands instantly when released into normal pressure, forming puffed products.
Features: Multi-functional (can process corn, sorghum, millet, etc.), various shapes (sticks, balls, rings, slices), capacity 30–120 kg/h for small models.
(2) Airflow/Steam Puffing Type
- Principle: Grains are heated in a sealed chamber with hot air/steam to build pressure; sudden pressure release causes grains to puff.
Features: Oil-free, retains natural flavor, suitable for whole-grain puffing (e.g., puffed rice cakes).
(3) Small Household/Commercial Puffing Machine
Principle: Compact design with electric heating and pressure control, for small-batch production of puffed rice crackers or cakes.
2. Key Parameters (Common Models)
| Item | Screw Extruder | Airflow Puffer | Small Rice Cake Machine |
|---|---|---|---|
| Capacity | 30–200 kg/h | 50–500 kg/h | 10–30 kg/h |
| Power | 7.5–22 kW | 15–30 kW | 2–4 kW |
| Material | Stainless steel (food grade) | Stainless steel | Stainless steel |
| Product Shapes | Sticks, balls, rings, stars | Puffed rice, popcorn | Round rice cakes |
3. Applications
- Snack Food: Puffed rice, rice crackers, cereal bars, crispy rice snacks.
- Breakfast Cereals: Puffed rice flakes, mixed grain cereals.
- Confectionery: Rice krispie treats, puffed rice candy.
- Multi-grain Processing: Corn, wheat, sorghum, millet puffing.
4. Advantages
- High Efficiency: Continuous production, low labor cost.
- Versatility: One machine makes multiple snacks with different molds.
- Healthy: Oil-free or low-oil processing options available.
- Customizable: Adjust temperature/pressure for desired crispness.
5. Buying Tips
- Capacity: Match output to demand (small business: 50–100 kg/h; factory: 200+ kg/h).
- Material: Choose food-grade stainless steel for easy cleaning and durability.
- Mold Options: Ensure interchangeable molds for diverse products.
- Power & Voltage: Confirm compatibility with local power supply.