Method for producing a base mixture of rubber

Details Method for producing a base mixture of rubber Method for producing a base mixture of rubber

1995-02-17

1996-03-05

Cooley, Charles E.

Agitating

Rubber or heavy plastic working

Plural mixing chambers

366 97, B29B 718, B29B 1304

Patent

active

054961076

ABSTRACT:
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.

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