Product Description
**Advantages of Twin-Screw Extruders (TSE) over Single-Screw Extruders (SSE) for Fish Feed Production**
**1. **Better Mixing & Homogeneity**
- **TSE**: Co-rotating screws provide **intensive shear and mixing**, ensuring uniform distribution of ingredients (e.g., proteins, lipids, binders).
- **SSE**: Limited mixing capability, leading to potential **uneven texture or nutrient distribution**.
**2. **Higher Flexibility in Formulation**
- **TSE**: Handles **high-fat (>15%) and high-protein** recipes without clogging (ideal for fish feed).
- **SSE**: Struggles with sticky or oily formulations, requiring pre-conditioning.
**3. **Superior Starch Gelatinization & Digestibility**
- **TSE**: Precise **temperature control (100-150°C)** and shear forces improve starch gelatinization, enhancing feed digestibility.
- **SSE**: Inconsistent heating may result in **under- or over-cooked feed**.
**4. **Wider Range of Raw Materials**
- **TSE**: Processes **alternative proteins** (e.g., insect meal, plant-based) and **fibrous materials** more efficiently.
- **SSE**: Limited to conventional ingredients due to poor shear adaptability.
**5. **Higher Production Capacity & Energy Efficiency**
- **TSE**: **20-30% higher output** at similar energy consumption due to optimized screw design.
- **SSE**: Lower throughput, especially for floating/sinking feed with complex textures.
**6. **Precise Control over Floating/Sinking Feed**
- **TSE**: Adjusts **density** (via screw speed, temperature, and moisture) to produce both **floating** (low density) and **sinking** (high density) feed.
- **SSE**: Limited density control, often requiring post-processing.
**7. **Lower Wear & Maintenance**
- **TSE**: Even material distribution reduces **localized wear** on screws and barrels.
- **SSE**: Uneven pressure causes faster degradation of screw flights.
**8. **Better Product Expansion & Palatability**
- **TSE**: Creates **uniform porosity**, improving water stability (critical for aquatic feed) and palatability.
- **SSE**: Expansion is less controllable, leading to inconsistent pellet quality.
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**Key Technical Comparison**
| **Parameter** | **Twin-Screw Extruder (TSE)** | **Single-Screw Extruder (SSE)** |
|---------------------|-------------------------------|---------------------------------|
| **Mixing Efficiency** | Excellent (intermeshing screws) | Moderate (limited shear) |
| **Fat Content Tolerance** | Up to **20%+** | Typically <**12%** |
| **Starch Gelatinization** | >90% (optimized) | 70-85% (variable) |
| **Production Capacity** | **High** (1-10 tons/hr) | **Moderate** (0.5-5 tons/hr) |
| **Pellet Density Control** | Precise (floating/sinking) | Limited |
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**Conclusion**
For **high-quality fish feed** (especially for species like tilapia, shrimp, or salmon), **twin-screw extruders** outperform single-screw machines in:
**Nutrient uniformity**
**Formula flexibility**
**Digestibility enhancement**
**Production scalability**
Product Parameters
| Model |
Capacity |
| TSE85 |
500KG/H |
| TSE95 |
1000KG/H |
| TSE120 |
2000KG/H |
Detailed Photos
Company Profile
Company Profile:
Jinan Sunward Machinery Company is founded in 2009 .It is an industry and trade integrated enterprise. The company is committed to R & D extrusion machinery and related ancillary equipments. It is covering mainly machinery and equipment for puffed snack food machine, fried snack food machine ,corn flakes/breakfast cereal system, baby food system, pellets system, artificial rice system,soy nuggets system; as well as pet food/fish food system.Jinan sunward machine after- sales department are always available for you.
Flow Chart
1.Mixer→ 2.Screw Conveyor → 3.Extruder→ 4.Air conveyor → 5.Multilayer Electrical Dryer→ 6.Hoister→ 7.Roller →8, Oil sprayer
After service project
Audited Supplier 
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