Method for producing a base mixture of rubber

摘要

An apparatus for preparing rubber mixtures has a ram mixer for mixing rubber and non-reactive additives to form a rubber base mixture and a ramless mixer for finely dispersing the non-reactive additives within the rubber base mixture. The ramless mixer is positioned below the ram mixer and connected to the ram mixer such that the rubber base mixture is directly introduced into the ramless mixer for finely dispersing the non reactive additives. Accordingly, in a ram mixer a batch of rubber and non-reactive additives is mixed to form a rubber base mixture. The rubber base mixture is transferred into the ramless mixer. The ramless mixer serves to finely disperse the non-reactive additives within the rubber base mixture. The rubber mixture with the finally dispersed non-reactive additives is then conveyed to a second mixing stage. In the second mixing stage reactive additives are added and the rubber base mixture together with the reactive additives is finishing-mixed to form a finished rubber mixture.