Continuous liquid incorporation in the transfermix extruder

One drawback to the production of rubber compounds in an internal mixer is the discontinuous mode of operation. One of the main targets of research af:the IKV is thus to achieve continuous, full mixing in a transfermix extruder. Liquid components, and, in particular, cross-linking systems, are to be metered in on a continuous basis. This paper presents the construction of a plant for metering in fluids on an MCT extruder and shows that, with an appropriate pressure profile in the barrel, a modified feed section and controllable injection, it is possible to run a stable mixing process continuously.