With a group of 5 or 6 machines the material mixtures where fed to every machine connection with a star-feedingline. From the central controlunit the material can be preselected for every machine. Due to the number of 54 machines and 3 different materials, the largest ever built spiral feedingline was realized. The complete feeding length was 2,6 km by using 256 single feeders. As the customers had lots of problems with dust and separation in the formerly used pneumatic system, they decided to use our technology. Although this system is 20 year in operation now (with a very low rate in spare parts) we are still very proud of that pioneering plant.