PE Thick Plate Extrusion Line

The PE thick plate extrusion line is a specialized, high-efficiency production system engineered for manufacturing thick-gauge polyethylene (PE) plates and sheets. Targeting plate thicknesses ranging from 5mm to 150mm and widths from 500mm to 3000mm, this line integrates core modules including a high-torque single/double screw extruder, a precision T-die or coat-hanger die, a multi-roll calibration unit, a traction system, and an automatic cutting and stacking station. The working principle follows a continuous, automated workflow: PE raw materials (including HDPE, LDPE, and LLDPE, or recycled PE granules) are melted, plasticized, and homogenized in the extruder at temperatures between 160°C and 220°C. The molten PE melt is then extruded through the die to form a preliminary plate shape, which is immediately cooled and shaped in the calibration unit to ensure flatness and dimensional accuracy. Finally, the finished plate is tractioned, cut to fixed lengths, and stacked for storage or shipment. The line supports both single-layer and multi-layer co-extrusion processes, enabling the production of functional PE plates with enhanced performance.

Core Advantages

  • High Precision Dimensional Control Equipped with an intelligent online thickness monitoring and automatic adjustment system, the line can control the thickness tolerance of PE thick plates within ±0.5%, far exceeding the industry’s average level of ±2%. The multi-roll calibration unit with variable speed regulation effectively eliminates plate warping, edge curling, and internal stress, ensuring consistent flatness and surface smoothness across large-format plates.
  • Strong Material Adaptability & Customization The line is compatible with various PE raw materials, including virgin HDPE for high-strength structural plates, LDPE for flexible wear-resistant plates, and recycled PE granules for cost-effective general-purpose plates. It supports the addition of functional additives (such as anti-UV agents, anti-static agents, and flame retardants) during extrusion, enabling the customization of PE plates for specific scenarios. Additionally, the modular die design allows quick switching between different plate widths without lengthy equipment reconfiguration.
  • High Production Efficiency & Low Energy Consumption. Adopting a high-efficiency screw with optimized mixing and plasticizing performance, the line achieves a production capacity of 500–2000kg/h, which is 30% higher than traditional extrusion lines. The energy recovery system recycles waste heat from the extruder to preheat raw materials, reducing overall energy consumption by 15%–20%. Meanwhile, the fully automated workflow minimizes manual intervention, cutting labor costs and reducing material scrap rate to below 3%.
  • Durable & Stable Operation The core components of the line (including the extruder screw, die head, and calibration rolls) are made of wear-resistant alloy steel, which can withstand long-term high-temperature and high-pressure operation without deformation or damage. The PLC centralized control system enables real-time monitoring of key parameters such as temperature, pressure, and speed, with automatic fault alarm and shutdown functions to avoid production accidents and ensure stable 24/7 continuous production.

Key Applications     

  • Construction & Engineering Field HDPE thick plates produced by this line are widely used as temporary road plates for construction sites, trench lining plates, and slope protection plates. These plates have high compressive strength, corrosion resistance, and impact resistance, and can be reused multiple times, effectively reducing construction costs. They are also used as formwork for concrete pouring, replacing traditional wooden formwork to avoid material waste.
  • Chemical & Environmental Protection Field Corrosion-resistant PE thick plates are ideal for manufacturing storage tanks, chemical reaction tanks, and sewage treatment equipment linings. They can resist the erosion of acids, alkalis, salts, and other corrosive media, and have good sealing performance, which is safe and reliable for storing and transporting chemical raw materials and wastewater.
  • Logistics & Transportation Field LLDPE thick plates with high toughness are processed into pallet boards, turnover box liners, and container floor mats. These products have strong wear resistance and impact resistance, can withstand heavy loads and frequent handling, and effectively extend the service life of logistics equipment.
  • Agriculture & Aquaculture Field PE thick plates are used to make aquaculture pond liners, irrigation channel linings, and greenhouse base plates. They have excellent waterproof performance and UV resistance, can adapt to harsh outdoor environments, prevent water seepage and soil erosion, and help improve agricultural production efficiency.