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Drying and Crystallizing Machine for Pet Pelletizing or Sheet Extrusion
Drying and Crystallizing Machine for Pet Pelletizing or Sheet Extrusion
### **PET Drying & Crystallizing Machine for Pelletizing/Sheet Extrusion**
**—Precision-Engineered System for Enhanced Polymer Performance**
---
#### **Core Technology**
1. **Integrated Process Flow**
- **Simultaneous Crystallization & Drying**: Combines **fluidized-bed preheating** (120–160°C) and **desiccant dehumidification** (-45°C dew point) in a single unit, reducing total process time by 40%.
- **Crystallinity Control**: Achieves 25–50% crystallinity via **three-stage thermal profiling** (ramp/soak/cool), optimized for pelletizing or sheet applications.
2. **Advanced Moisture Management**
- **Dual-Layer Adsorption**: 4A+13X molecular sieves ensure residual moisture **≤40 ppm** (meets ASTM D6868 standards).
- **Self-Diagnostic Sensors**: Real-time monitoring of:
- Pellet surface temperature (±0.5°C)
- Moisture gradient across material bed
- Desiccant saturation level
---
#### **System Configuration**
| Module | Key Innovations |
|--------|-----------------|
| **Pre-Treatment** | Magnetic separator removes metallic contaminants (≥99.9% efficiency) |
| **Crystallizer** | Corrosion-resistant 316L stainless steel chamber with anti-static coating |
| **Drying Tower** | Rotary valve system minimizes heat loss during material transfer |
| **Control Hub** | IoT-enabled PLC with predictive maintenance alerts and energy analytics |
---
#### **Technical Specifications**
| Parameter | Pelletizing Mode | Sheet Extrusion Mode |
|-----------|------------------|-----------------------|
| Capacity | 1–8 tons/hour | 0.5–4 tons/hour |
| Crystallinity | 35–45% | 25–35% |
| Residual Moisture | ≤30 ppm | ≤50 ppm |
| Energy Use | 0.18 kWh/kg | 0.22 kWh/kg |
| Thermal Uniformity | ±1.2°C | ±1.8°C |
---
#### **Critical Advantages**
1. **Dual-Process Optimization**
- **For Pelletizing**: Prevents bridging/sticking with **variable-frequency vibration** (5–25 Hz adjustable).
- **For Sheet Extrusion**: Maintains consistent melt flow index (MFI) within ±2g/10min.
2. **Eco-Smart Features**
- Regenerative thermal oxidizer (RTO) reduces VOC emissions by 95%.
- 85% waste heat recovery through integrated heat pipes.
3. **Material Versatility**
- Processes virgin PET, rPET (recycled), and PET-G blends without cross-contamination.
- Handles varied geometries: pellets (2–5mm), flakes (0.5–3mm), or regrind materials.
---
#### **Certifications & Compliance**
- **CE Mark** (EN 61439-1 low-voltage directive)
- **FDA 21 CFR §177.1630** (food-contact compliance)
- **ISO 50001** (energy management system)
- **ATEX Zone 22** (optional explosion-proof design)
---
#### **Operational Benefits**
- **For Pelletizers**: Reduces IV drop to ≤0.03 dl/g, enabling high-clarity bottle-grade resin production.
- **For Sheet Lines**: Eliminates bubbles/streaks, achieving ≤5 defects per 100m2 in APET/CPET sheets.
- **Energy Savings**: Cuts annual CO? emissions by 120+ tons (vs. conventional dryers).
---
**Case Study**:
A European PET sheet manufacturer achieved:
- 22% faster line speed (from 12m/min to 14.6m/min)
- 98.5% yield rate (previously 89%)
- ROI within 14 months through reduced scrap and energy costs.
This system is globally deployed in 60+ PET processing plants, delivering ≤50 ppm moisture consistency across 99.2% of production batches. (Word
