PVC Hot Face Pelletizing Line
+25% Output Efficlency
-15% Energy Consumption
99.6% Stable Operation Rate
Why our machinery stands out
- Uniform Die-Face Cutting: The high-speed rotating blades slice the extruded strands directly at the die face, ensuring perfectly round, uniform pellets with zero clumping.
- Superior High-Filler Compounding: The specialized conical twin-screw extruder delivers excellent progressive mechanical shear, effortlessly processing economical PVC dry blends with heavy calcium fillers.
- Rapid Cyclone Chilling: A powerful pneumatic blowing system instantly transports hot pellets through intensive multi-stage stainless steel cyclones to lock in pellet geometry and prevent thermal sticking.
- Smart Automated Execution: Integrated PLC systems synchronize the extruder head pressure, pneumatic knife speed, and downstream air cooling vectors for flawless 24/7 continuous recycling or compounding.
Parameter
| Model | Main power | Capacity | Pellets diameter | Total length |
|---|---|---|---|---|
| SJSZ 45 | 22 KW | 120 KG/H | 3 mm | 12 m |
| SJSZ 65 | 37 KW | 280 KG/H | 3 mm | 15 m |
| SJSZ 80 | 55 KW | 350 KG/H | 3 mm | 15 m |
Core Advantages
Advanced SJSZ Conical Twin-Screw Extruder
High-Calcium Wear Resistance: Barrels and screws feature advanced bimetallic nitriding and tungsten carbide coatings to withstand highly abrasive PVC fillers.
Gentle Progressive Plasticization: Tapered screw flights provide large feeding intake volumes and low-temperature progressive melting to prevent material scorching.
High-Torque Distribution Gearbox: Hardened internal thrust gears deliver a stable, balanced driving force to handle heavy structural material pressures.
Intelligent Thermal Management: Encased in ceramic heating bands paired with high-flow forced-air blowers to lock melt temperatures within a strict ±0.5°C window.
Micro-Adjustable Hot-Face Die Head
Symmetric Coat-Hanger Runner: The internal flow plate forces the molten PVC compound evenly through multi-hole circular die tracks without dead zones.
Pneumatic Axial Knife Alignment: Uses pneumatic cylinders or fine-thread manual dials to press the cutting blade flawlessly flush against the mirror-polished die face.
Variable Inverter Blade Drive: The rotating cutter arm is driven by a dedicated inverter motor, allowing operators to adjust cutting speeds to alter pellet sizes on the fly.
Tungsten Carbide Alloy Blades: Equipped with ultra-tough, wear-resistant blades that cleanly slice hot PVC strands into uniform lengths without creating ragged tails.
Closed-Loop Pneumatic Cyclone Cooling System
Instant Negative-Pressure Transport: High-pressure blowers draw freshly cut granules instantly into a sealed stainless steel pipe network, eliminating ambient dust exposure.
Intensive Dual-Cyclone Separators: Features multi-stage SUS304 vertical cyclone silos that cyclonically swirl the pellets to drop surface heat rapidly.
Integrated Air-Forced Vibrating Sieve: Drops cooled pellets onto a centralized linear shaking screen to filter out micro-sized fines and oversized aggregates automatically.
Anti-Clumping Surface Cooling: Rapidly lowers material temperatures below the polymer's sticking point, ensuring free-flowing granules ready for bagging.
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FAQ
Why is hot-face cutting preferred over water-strand cutting for PVC pelletizing?
PVC melt has a high viscosity and low hot-tensile strength, especially when heavily loaded with calcium carbonate fillers. Traditional water-strand pelletizing lines suffer frequent strand breakages, which force operators to stop the machine and re-pull the strands manually. The Hot-Face Cutting Line eliminates this bottleneck entirely by slicing the material into pellets the millisecond it exits the die head, making the line 100% continuous and automated.