Polyphenylene sulfide (PPS)Fortron KPS

Fortron KPS

Plastic that combines strength with light weight and non-combustibility

Fortron KPS is a linear polyphenylene sulfide(PPS) resin that offers exceptional mechanical strength, heat resistance, chemical resistance, and flame resistance. Kureha developed and began producing this high-performance material in 1987. It is highly regarded worldwide as a tough and heat-resistant super-engineering plastic.


  • Exceptionally tough, offering considerable improvement over previous cross-linked PPS products
  • Few ionic impurities, making it suitable for applications demanding strict electrical characteristics
  • Excellent thermal stability, making it easy to mold
  • Good weld strength and excellent secondary workability, such as with screws or press fittings
  • Exceptional properties suitable for a wide?ranging manufacturing, from automobiles to smartphones.


  • Automobile components
    Engine room parts
  • Electronic parts
    PC / Smartphone
  • Environmental products
    Bag filter
  • Housing related parts
    Food processer, Rice cooker, Bidet-toilet, Water mixer taps
Air filter
Air filter

World-leading production structure

PPS is produced at the Iwaki Factory in Fukushima Prefecture (15,700 tonnes annually), and by Fortron Industries in North Carolina in the United States. Together these two world-class facilities produce 32,700 tonnes annually to meet the growing demand for PPS.

  • PPS production facility at the Iwaki Factory
    PPS production facility at the Iwaki Factory
  • Fortron Industries (U.S.)
    Fortron Industries (U.S.)

Kureha has a business alliance for PPS with Polyplastics Co., Ltd. The company sells PPS worldwide as compound materials for injection molding under the DURAFIDE brand.

Contact for inquiries