Kautschuk Gummi Kunststoffe, Vol.57, No.9, 430-436, 2004
Continuous mixing, a challenging opportunity
In recent years a lot of research work has been done in the field of continuous mixing of rubber compounds and the trend is that research on this topic will increase. Additionally powdery and free flowing raw materials become available, at least in small quantities. Despite these almost all rubber compounds are produced in internal mixers or on open mills. The present study compares the benefits and disadvantages of continuous mixing with respect to batch mixing. Both technological and economical aspects are viewed in the present study. It will be shown that only in case of a drastically change in mind setting or in case that leading global customers require a far better consistent production continuous mixing will break through. Even in this case it is questionable whether the present rubber industry including machinery suppliers and raw material companies is able to develop continuous mixing systems on a commercial scale. A global cooperation between customer, tyre and technical rubber articles manufacturers, raw material suppliers and the machine industry is an absolute necessity to introduce this challenging technology on a commercial scale successfully.