| 摘要 |
An extrusion device ( 1 ) for manufacturing a product based on a rubber mix, which comprises a rotary roller ( 5 ), an inlet orifice ( 15 ) for the rubber mix and a vault ( 6 ) partially circumferentially covering the external surface ( 51 ) of the roller ( 5 ), the rubber mix being driven from the inlet orifice ( 15 ) into the air gap situated between the vault ( 6 ) and the roller ( 5 ) towards an extrusion orifice ( 21 ) defining the profile of the product. The extrusion orifice is delimited by a wall ( 20 ) which cooperates with the external surface ( 51 ) of the roller ( 5 ), and the vault ( 6 ) carries on its internal surface oriented towards the roller projecting threads in order to delimit with the surface ( 51 ) of the roller a chamber for plasticization of the mix, at least two of the threads extending substantially axially of the roller.
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