Long Fiber Compounds Molding Guidelines

When processed properly, Long Fiber Compounds retain their fiber length during molding. Correct processing is critical to maintaining high-quality parts; breaking the fibers during processing can result in sharply reduced material properties.

These molding guidelines are offered as suggestions and may be subject to modification, depending on your specific material or design. Please contact RTP Company’s technical service representatives for assistance.

• Engineering Design Considerations

• Comparison of Long & Short Fiber Pellets

• Equipment Considerations
  • Three Piece Screw Tip Ring Valve

• Tooling Considerations

• Processing Considerations

• Molding Temperatures

• Minimizing Wear in Processing Equipment

• Drying Long Fiber Compounds
  • Typical Dehumidifying Closed System for Drying Long Fiber Compounds

• Regrind

Download a .pdf of the Very Long Fiber (VLF) Molding Guide