PP Hollow Profile Sheet Co-Extrusion Line: Revolutionizing Plastic Profile Manufacturing


Polypropylene (PP) hollow profile sheets have become essential components across industries ranging from construction to automotive manufacturing. At the heart of their production lies the advanced PP hollow profile sheet co-extrusion line – a sophisticated system combining efficiency, precision, and material versatility. This guide explores why this technology matters and how to leverage it for superior product outcomes.


What is a PP Hollow Profile Sheet Co-Extrusion Line?


A co-extrusion line for PP hollow profile sheets integrates multiple extruders to simultaneously process different polymer layers. This technology enables:


Key components include:


  1. Twin-screw extruders (80-300mm screw diameters)

  2. Layer-specific feed blocks

  3. Precision calibration tables

  4. CNC-controlled haul-off units

  5. Automated cutting systems

Top 5 Benefits of Modern Co-Extrusion Technology



  1. Material Efficiency: 25-40% weight reduction vs solid profiles

  2. Enhanced Properties:

    • Impact resistance: 3-5x improvement over single-layer sheets

    • Thermal stability: -30°C to +120°C operating range

  3. Cost Optimization:

    • 15-30% energy savings vs conventional extrusion

    • 50%+ recycled material incorporation capability

  4. Design Flexibility:

    • Customizable honeycomb/ribbed structures

    • Widths up to 2,500mm, thicknesses 2-20mm

  5. Sustainability:

    • Closed-loop production systems

    • ROHS/REACH-compliant outputs

Industrial Applications of PP Hollow Profile Sheets


Industry Use Cases Key Requirements
Construction Partition walls, false ceilings, roofing UV resistance, flame retardancy
Automotive Door panels, trunk liners, battery casings Impact resistance, lightweight
Packaging Industrial containers, reusable crates Stackability, chemical resistance
Agriculture Greenhouse panels, livestock partitions Weather resistance, durability

Choosing the Right Co-Extrusion Line Manufacturer: 7 Critical Factors


  1. Technical Expertise: Look for 10+ years in profile extrusion systems

  2. Customization Capability: Minimum 30% line configurability

  3. Energy Efficiency: ENERGY STAR® or equivalent certifications

  4. Throughput Capacity: 300-1,500 kg/hr production rates

  5. After-Sales Support: <48hr response time guarantees

  6. Compliance Standards: CE, ISO 9001, and industry-specific certifications

  7. R&D Investment: Annual tech upgrades with IoT/Industry 4.0 integration

Future Trends in PP Co-Extrusion Technology

About Handern

About Handern Image
  • Wuhan Handern Machinery Co., Ltd. is a high-tech Sino-foreign joint venture integrating scientific research, production and sales. Our company is located in the center of the beautiful city Wuhan, which is adjacent to the airport, railway station and bus station, with convenient transportation. Our company founded in 2005. At present, it has more than 35,000 square meters of workshops and more than 100 employees,and 30 engineers with medium and high titles. Handern have had consistently adhered to the business philosophy of integrity, equality, and customer interests first. The products are managed by GB/T 19001-2000 idt ISO 9001:2000 quality system, and our company provide support and personnel training for customers.

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