LFT Long Fiber Reinforced Thermoplastics

Innovative compounding of LFT by best-in-class pultrusion process

Pultrusion pellets are an integral part of applications in the automotive and aerospace industries, electronics, construction materials, sports equipment and furniture. Materials produced with the LFT pultrusion process feature superior mechanical properties with low weight; however, they also put put high demands on the compounding process.

Due to its comprehensive engineering know-how in cooperation with partners Coperion provides best-in-class systems for the production of LFT long fiber thermoplastics by pultrusion. The highly accurate Coperion K-Tron feeders, the high-performance twin screw extruders in which the polymer and additive are compounded gently by special screw configurations and the LFT pelletizers and classifiers are provided by Coperion. The roving creel rack, pultrusion impregnation head in which the fibers are impregnated and additional compontents are supplied by partner companies.

Typical LFT products

  • Products for the automotive industry
  • Products for the aerospace industry
  • Products for electronic industry
  • Products for building construction
  • Sporting equipment
  • Furniture

Typical set-up of a long fiber thermoplastics pultrusion line

Typical fiber-polymer combinations

Polymer Fiber
PC, ABS, PPO Glass, steel
TPU Glass, carbon
PP Glass, carbon, steel
PA6, PA66, POM, PPS Glass, aramid, carbon, steel


Comprehensive product range

Coperion twin screw extruder ZSK 82 Mc18

Compounding Machines and Extruders

Twin screw extruders from Coperion have been used successfully for the production of long fiber thermoplastics for many years. They ensure gentle product handling and optimum mixing behavior.

Feeding Equipment

Coperion K-Tron feeding equipment offers a continuous, uniform infeed with excellent short-term accuracy and repeatability. Depending on the raw materials and process requirements, a wide range of feeder models and configurations are available for use in LFT processes. Feeder options include single screw feeders or bulk solids pumps for free flowing materials like granulates & pellets, twin screw feeders for difficult powders as well as liquid feeders and vibratory feeders for fibers.  State-of-the-art Smart Force Transducer weighing technology ensures excellent performance from our gravimetric feeders.

Material Handling Equipment

Understanding the critical aspects of a process is crucial for making a consistent quality product. Coperion K-Tron’s years of experience with providing material handling systems will ensure that your LFT process is successful.

Coperion Service


Coperion and Coperion K-Tron offer a comprehensive range of services  - to gain maximum productivity as well as greatest possible availability and operational reliability of your compounding plants.


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