Equipment

rPET Twin-Screw Sheet Extrusion Line

Designed for rPET bottle flakes, recycled PET and PET production scraps, this line integrates drying, twin-screw extrusion, vacuum degassing, melt filtration and three-roll calendering.

Product Advantages

  • Depending on feedstock quality and product requirements, the line can process a high proportion of recycled PET materials, including PET bottle flakes and production scraps, helping improve material utilization and reduce raw-material costs.
  • Material drying and multi-stage vacuum degassing remove moisture and low-molecular-weight volatile substances, helping reduce bubbles, yellowing and material degradation.
  • The twin-screw geometry, material residence time and temperature-control process are optimized for rPET melt characteristics, improving plasticizing uniformity, sheet flatness and thickness stability.
  • A hydraulic screen changer and precision melt-filtration system remove solid contaminants from the material, improving production stability and finished-product yield.
  • PLC touchscreen control centrally manages extrusion, temperature control, calendering, haul-off and winding for stable continuous production.
  • An optional multi-layer co-extrusion configuration can produce rPET composite sheets with different surface or functional layers, subject to material compatibility and process validation.
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Applications

  • Food Trays
  • Fresh Produce Containers
  • Transparent Stationery Sheets
  • Printable Sheets
  • Toy Blister Covers
  • Eco-Friendly Thermoformed Packaging Boxes

Product Details

  • The rPET twin-screw sheet extrusion line mainly consists of a material handling and drying system, a high-torque twin-screw extruder, a multi-stage vacuum degassing system, a hydraulic screen changer and melt-filtration unit, a coat-hanger T-die, a precision three-roll calendering and cooling unit, haul-off and edge-trimming equipment, a winding system, and a PLC control system.
  • The material drying, screw configuration, residence time, vacuum degassing, melt filtration and temperature-control process are coordinated to address the moisture content, contamination, viscosity fluctuation and hydrolytic degradation characteristics of recycled PET.
  • Multi-stage vacuum degassing and precision filtration help remove moisture, volatile substances and solid contaminants, reducing bubbles, yellowing and surface defects. The three-roll calendering and cooling unit improves surface quality, flatness and thickness uniformity.
  • Depending on the configuration, the line can process rPET bottle flakes, recycled PET pellets and clean PET production scraps. It can produce clear, matte and modified rPET sheets. Sheet width, thickness, output capacity, filtration accuracy and winding configuration can be customized.

Specifications

Product Type
rPET Sheet Extrusion Line
Main Extruder
High-Torque Twin-Screw Extruder
Applicable Materials
rPET Bottle Flakes, Recycled PET Pellets and PET Production Scraps
Material Treatment
Material Drying, Feeding and Multi-Stage Vacuum Degassing
Filtration System
Hydraulic Screen Changing and Precision Melt Filtration
Finished Sheet Width
500–1500 mm, Customizable
Sheet Thickness
0.2–2.0 mm
Output Capacity
300–1300 kg/h
Control System
PLC and Touchscreen Control
Die Type
Coat-Hanger T-Die
Calender Configuration
Precision Three-Roll Calendering and Cooling Unit
Collection Method
Online Edge Trimming and Winding
Optional Configurations
Multi-Layer Co-Extrusion, Online Thickness Measurement and High-Precision Filtration

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