Let’s celebrate!
The Co-Kneader Turns 80
In 1945, BUSS filed the patent for a groundbreaking invention: the co-kneading principle, developed by Heinz List. This marked the beginning of what would become decades of compounding excellence.
Now, in 2025, the original Co-Kneader celebrates its 80th anniversary — a milestone that reflects not just the longevity of the invention, but its continual relevance and transformation through eight decades of engineering progress.
From the early launch of the first co-kneader over earlier stages like the PR series to the introduction of modular systems like MKS, the development of co-kneaders for special applications like the PCS series and ultimately COMPEO — BUSS technology has continually adapted to meet the evolving needs of compounding.
A Look Back
Today, the co-kneading principle is still patented. It evolved, it received new elements and features that make it stronger. But it’s still our core.
Compounding Excellence
BUSS Co-Kneader Technology for Plastics Processing
What began as a licensed invention is the backbone of BUSS. Today, our compounding systems stand for precision, modularity, and superior process control — ideal for complex formulations across various industries and applications.
Compounding Excellence
BUSS Co-Kneader Technology for Plastics Processing
What began as a licensed invention is the backbone of BUSS. Today, our compounding systems stand for precision, modularity, and superior process control — ideal for complex formulations across various industries and applications.