The VihoX 85 PET Parallel Twin-Screw Sheet Extrusion Line represents our industrial flagship solution for high-throughput rigid food packaging operations. Designed to convert virgin resin pellets, post-consumer recycled flakes (RPET), and heat-sensitive PLA into pristine roll stock at capacities between 700 and 900 kg/h, this high-output system features heavy-duty co-rotating twin screws (Φ85 mm × 2) with an L/D ratio of 44:1 driven by a robust 200 kW main motor.
Capable of producing finished sheet widths up to 1000 mm and thickness gauges from 0.15 mm to 1.5 mm, the line incorporates an oversized 250CC high-pressure melt gear pump coupled with a 1200 mm flexible-lip coat-hanger T-die. Downstream web forming and cooling are conducted by an enlarged three-roll calender system (Φ450 / 600 / 600 mm) equipped with independent AC servo motors and high-flow spiral cooling channels, ensuring rapid crystallization suppression and mirror-smooth transparency on heavy-gauge and thin-gauge PET rolls alike.
Factory trial run: VihoX 85 PET Parallel Twin-Screw Sheet Extrusion Line Running Test
| Heavy-Duty Parameter | Factory Verified Metric | High-Output Significance |
|---|---|---|
| Suitable Resins | PET / RPET / PETG / PLA | Suited for 100% bottle wash flakes and virgin food packaging stock |
| Screw Diameter & Type | Φ85 mm × 2 (Co-rotating Twin) | Massive volumetric displacement handling high bulk-density flake mixes |
| Length-to-Diameter Ratio | 44:1 L/D | Multi-vent barrel structure facilitating complete vacuum moisture removal |
| Sheet Structure | Single Layer (Multi-layer Optional) | Compatible with ABA co-extrusion feedblock for recycled core capping |
| Finished Sheet Width | ≤ 1000 mm (Customizable) | Feeds wide-bed high-speed cup thermoformers like the VihoX-850 series |
| Sheet Thickness Range | 0.15 – 1.5 mm | High precision from ultra-thin cup lid film to deep-draw tray sheet |
| Reference Hourly Output | 700 – 900 kg/h | Heavy industrial capacity supporting multi-thermoformer plant setups |
| Main Motor Power | 200 kW | Heavy-duty AC inverter motor paired with hardened reduction gearbox |
| Total Installed Power | Approx. 370 kW | Includes barrel heating zones, vacuum stations, and calendar cooling |
| Calender Roller Dimensions | Φ450 / 600 / 600 mm | Large roller diameter prolongs contact cooling time during high speed |
| T-Die Lip Width | Approx. 1200 mm (Customizable) | High-grade alloy tool steel with streamlined interior flow manifold |
| Production Line Speed | Max. Approx. 15 m/min | Synchronous digital bus communication across all downstream sections |
| Roller Cooling Architecture | Circulating Water Cooling | Industrial chiller recommended to maintain rapid web quenching |
| Roller Drive Mechanism | Independent Motor Drive | Individual servo drives on each roll for micro-differential speed setting |
| Melt Metering Pump | 250CC Precision Gear Pump | Generates positive volumetric displacement with zero pressure fluctuation |
| PET Raw Material Degassing | High-Efficiency Vacuum Venting | Eliminates dehumidification drying ovens subject to flake moisture content |
| Winding Configuration | Three-Station Winding Unit | Automatic roll index and tension tapering preventing inner-core crushing |
| Electrical Utility Standard | 380V / 50Hz / 3-Phase | Custom engineering available for worldwide factory voltage standards |
| Footprint Envelope | Approx. 22 × 5 × 3 m | Optimized inline footprint with cantilever overhead cooling bracket |
| Machine Weight | Approx. 30 Metric Tons | Heavy structural gantry minimizing vibration at peak 900 kg/h output |
Processing up to 900 kg of PET per hour without pre-drying demands extraordinary devolatilization capability. The VihoX 85 features a double-venting degassing barrel incorporating Roots vacuum pump cascades and water-ring systems that pull continuous vacuums below 10 mbar. The dynamic melt seals formed by specialized reverse-flight screw segments prevent volatile backflow into the feed throat while forcing trapped moisture out through self-cleaning exhaust vents. Even when feeding mixed post-industrial edge trim and hot-washed flake blends, sheet IV retention remains remarkably high, guaranteeing brittle-free thermoforming performance.
At 800+ kg/h throughput, sheet heat must be extracted instantly to freeze the amorphous transparent state of PET before crystallization causes milkiness or opacity. The primary calender rolls measure a massive Φ600 mm, doubling the effective contact cooling dwell compared to compact roller sets. High-velocity cooling water circulates through triple-entry spiral channels within the roll bodies, maintaining surface temperature uniformity within ±0.8°C. An automated hydraulic nip gap adjustment with linear optical encoders ensures micrometer-precise caliper control across the full 1000 mm sheet width.
The 1000 mm maximum sheet width of the VihoX 85 line perfectly matches the high-output requirements of large-bed industrial thermoformers:
Virgin PET pellets typically run at 800 to 900 kg/h due to uniform bulk density. With 100% bottle flakes, output stabilizes around 700 to 800 kg/h, which can be further optimized using an optional gravimetric feeder.
At 700–900 kg/h, any slight head pressure surge would cause immediate thickness variations across the 1000 mm die. The 250CC melt pump isolates the die completely, holding web thickness deviation within ±0.01 mm.
The system comes standard with a continuous dual-column hydraulic screen changer featuring four breaker plates. Filter screen changes occur during live extrusion without slowing down the line or creating web breaks.
We recommend a factory transformer rating of ≥ 500 kVA. While typical operational power averages 200–240 kW depending on throughput and ambient temperature, 370 kW installed power accommodates initial heating and peak motor loads.
Yes. With specialized nucleating masterbatch dosing and adjusted calender roller temperature controls, the line produces dual-ovenable CPET roll stock with superior thermal stability.
The three-station turret winder accommodates maximum finished roll diameters up to 800 mm (approx. 500–800 kg per roll) with automated pneumatic expansion shafts and flying-knife cross-cutting.
A dedicated chiller providing 35 to 45 HP cooling capacity with a continuous water circulation flow of 25–35 m³/h is recommended to maintain optimal roller temperatures under peak 900 kg/h operation.
Our engineering team provides comprehensive turnkey support: factory floor layout CAD drawings, overseas installation, wiring and piping supervision, raw material formulation testing, and operator certification.
Request factory layout CAD plans, hourly power cost projections, and water chiller specifications for 700 to 900 kg/h flake conversion.
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