DJK Corporation
selects BUSS Co-Kneader for Test Center in Japan
DJK Test Labs Now Use BUSS Technology
The innovative and future-oriented nature of the BUSS Co-Kneader technology is currently being demonstrated in Japan. DJK Corporation is now testing polymers and composites on a BUSS Co-Kneader on a laboratory scale at its Fusion Technology Research Institute in Nagoya.

DJK President Iwai (right) and BUSS CEO Philip Nising (left)
BUSS Co-Kneader becomes Testing Standard for Polymer and Composite Material Development
During a series of tests conducted by DJK at the BUSS Technical Center in Kashiwa, Japan, the polymer and composites testing and research specialist found that the BUSS Co-Kneader can achieve kneading results that are difficult to achieve with other kneaders. This is because the BUSS Co-Kneader features a reciprocating single-screw shaft mechanism that achieves kneading capabilities equivalent to twin-screw extruders while suppressing temperature rise, and allows for high filler loading (up to 90% in practice). This technology has a proven track record in kneading PVC, engineering plastics, and plastics reinforced with glass or carbon fibers, which require the preservation of fiber length.
In order to optimize and expand its testing and research services for prototyping, analysis, benchmarking and material development for the best possible customer solution, DJK Corporation has ordered a 30 mm laboratory scale Co-Kneader from BUSS. The order was officially signed on January 24, 2025 by BUSS Japan Co., Ltd. in the presence of DJK President Iwai and BUSS CEO Philip Nising.
It is both a confirmation and an honor for BUSS that DJK, one of Japan’s leading test facilities for testing and researching polymer and composite materials, has chosen to run its test series for optimal and sustainable material development on a BUSS Co-Kneader.