METHOD OF PRODUCING AN ELASTOMERIC COMPOSITION Russian patent published in 2020 - IPC B29B7/18 B29B7/46 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to a method of producing an elastomeric composition. Technical result is achieved by method of obtaining elastomer composition (108) containing elastomeric polymer (102) and reinforcing filler (103). Method includes step of feeding elastomeric polymer and reinforcing filler into mixer (101) of periodic action. Intermittent mixer includes a mixing chamber, two rotors and two pistons configured to move to and from two rotors. Then, the mixing step is carried out in a batch mixer to obtain a portion of elastomer composition (108). After complete emptying of portion of elastomer composition. Step of feeding into a double-screw conical mixer (201) having mixing chamber (202), in which there are two oppositely rotating screws (205), tapering towards the outlet, and door (206) for closing and opening the outlet opening. Method then includes mixing portion of elastomer composition in twin-conical mixer with closed door, and unloading portion of elastomer composition from twin-screw conical mixer with door open.

EFFECT: technical result is higher efficiency, while ensuring given physical and chemical properties of obtained elastomer composition.

21 cl, 2 ex, 4 tbl, 2 dwg