Dog food machine pet food machine dog food production line dog food extruder
Product Description
Here's a step-by-step guide to producing **dog chews (dog biting gum/jerky) using a single-screw extruder**, including formulations, machine settings, and key considerations:
**1. Raw Material Preparation**
**Base Ingredients:**
- **Protein Source** (50-70%):
- Chicken/beef meal, fish meal, or plant-based proteins (soy, wheat gluten).
- *For rawhide-like chews*, use collagen powder (20-30%) + starch.
- **Starch Binder** (20-40%):
- Corn flour, potato starch, or tapioca starch (for texture and expansion).
- **Fiber** (5-15%):
- Cellulose, peanut hulls, or pumpkin fiber (for chewiness).
- **Plasticizers** (10-20% water/glycerin):
- Ensures flexibility and prevents brittleness.
**Optional Additives:**
- **Flavor Enhancers**: Liver powder, yeast extract.
- **Preservatives**: Natural options like rosemary extract.
- **Colors**: Caramel (for meat-like appearance) or beetroot powder.
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**2. Single-Screw Extruder Setup**
**Machine Configuration:**
- **Screw Design**: Use a **compression screw** (high compression ratio ~3:1) for dense, chewy texture.
- **Temperature Zones**:
- **Feed Zone (30-60°C)**: Preheats and mixes ingredients.
- **Compression Zone (80-120°C)**: Melts starch/protein for binding.
- **Metering Zone (100-140°C)**: Shapes the dough under pressure.
- **Die Shape**:
- **Round dies** for sticks/bones.
- **Flat dies** for jerky strips.
**Key Parameters:**
- **Screw Speed**: 150-300 RPM (lower speed = denser chew).
- **Moisture Content**: 20-30% (adjust for hardness).
- **Pressure**: 20-50 bar (ensures proper extrusion).
**3. Production Process**
1. **Pre-mixing**: Dry-blend all powders, then add water/glycerin to form dough.
2. **Feeding**: Gradually feed dough into the extruder hopper (avoid clogging).
3. **Extrusion**:
- Dough is heated, compressed, and forced through the die.
- **Cutting**: Rotating blades slice extruded strands into chew sizes.
4. **Drying**:
- **Hot-air drying** (60-70°C for 4-8 hours) to reduce moisture to **10-12%**.
- *Alternative*: **Microwave drying** for faster processing.
5. **Cooling & Packaging**: Cool to room temperature before vacuum-sealing.
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**4. Troubleshooting Common Issues**
| **Problem** | **Cause** | **Solution** |
|----------------------|--------------------------|---------------------------|
| **Too brittle** | Low moisture/over-drying | Increase glycerin (5-10%) |
| **Poor expansion** | Insufficient heat/speed | Raise compression zone temp |
| **Sticking to die** | High starch content | Add release agent (oil) |
| **Uneven texture** | Inconsistent feeding | Pre-mix thoroughly |
**5. Advantages of Single-Screw Extruders for Dog Chews**
- **Lower cost** vs. twin-screw (ideal for small/medium producers).
- **Simpler operation** (fewer moving parts, easier maintenance).
- **Adequate for dense chews** (less airy than twin-screw products).
**6. Product Variations**
- **Dental Sticks**: Add calcium carbonate for hardness.
- **Jerky Strips**: Slice flat-die extrudate thinly before drying.
- **Rawhide Alternatives**: Use collagen + starch (no rawhide).
**Final Notes**
- **Safety**: Ensure all ingredients are pet-safe (no xylitol, onions, etc.).
- **Testing**: Conduct palatability trials with dogs.
- **Scaling**: Start with small batches to optimize parameters.
Product Parameters
SPECIFICATIONS
| Model |
Main motor |
Output |
| TSE65 |
22kw |
100kg/h-150kg/h |
| TSE70 |
30kw |
200kg/h-250kg/h |
| TSE85 |
55kw |
300kg/h-500kg/h |
| TSE90 |
75kw |
800kg/h-1000kg/h |
Company Profile
Jinan Sunward Machinery Co., Ltd 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 corn meal milling system, corn flakes/breakfast cereal system, baby food system, corn puff snacks system, pellets system, artificial rice system,soy nuggets system; as well as pet food/fish food system.Jinan Sunward Machinery Company's workshop was founded in 2009. All machines were exported to all over the world by export agent. Company begin to have Independent import and export rights in 2014. For supplying best service, technology department, Sales department, producing department , after- sales department are always available for you. Sales department includes two international sales department and two domestic sales department. Our machines have been exported to many countries of Asia, America, Africa, Europe etc. Machines are welcome in the countries. So until now, there are not only direct customers, but also some long term cooperation agents. Such as Indonesia agent, Iran agent, Nigeria agent and so on. Don't hesitate to contact us. Sunward team from pre- service to after-service will prove your choice is worth it.
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