A system for producing rubber mixtures having expected properties comprising: a series of rubber mixture production installation (20, 100, 300, 400) that define monopassage and multipassage sequences of rubber mixture production, each rubber mixture production installation (20, 100, 300, 400) permitting execution of at least one rubber mixture production process; and transport means (114, 116, 200, 240, 250) that sequentially directs a rubber mixture to at least one rubber mixture production installation according to a rubber mixture recipe selected for producing a rubber mixture having expected properties; characterized in that the series of rubber mixture production installation comprises at least one mixing and cooling installation that performs a mixing and cooling process, the mixing and cooling installation comprising: at least one external mixer having a pair of cylinders for transforming the rubber mixture into a continuous sheet; at least one spray system having one or more spray rails, positioned at each of an upper spray station and a lower spray station, each spray rail, being in communication with a source for supplying water and air to one or more nozzles, at a predetermined water flow rate and a predetermined air pressure; and at least one aspiration system having one or more aspiration hoods, positioned downstream of each spray rail,, each aspiration hood, being in communication with a source for supplying air at a predetermined air flow rate; such that, during the mixing and cooling process, the mixing and cooling installation sprays the continuous sheet and evacuates the air containing the evaporated water in order to produce the rubber mixture at target values of temperature and water content before a complementary mixing process. a series of rubber mixture production installation (20, 100, 300, 400) that define monopassage and multipassage sequences of rubber mixture production, each rubber mixture production installation (20, 100, 300, 400) permitting execution of at least one rubber mixture production process; and transport means (114, 116, 200, 240, 250) that sequentially directs a rubber mixture to at least one rubber mixture production installation according to a rubber mixture recipe selected for producing a rubber mixture having expected properties; characterized in that the series of rubber mixture production installation comprises at least one mixing and cooling installation that performs a mixing and cooling process, the mixing and cooling installation comprising: at least one external mixer having a pair of cylinders for transforming the rubber mixture into a continuous sheet; at least one spray system having one or more spray rails, positioned at each of an upper spray station and a lower spray station, each spray rail, being in communication with a source for supplying water and air to one or more nozzles, at a predetermined water flow rate and a predetermined air pressure; and at least one aspiration system having one or more aspiration hoods, positioned downstream of each spray rail,, each aspiration hood, being in communication with a source for supplying air at a predetermined air flow rate; at least one external mixer having a pair of cylinders for transforming the rubber mixture into a continuous sheet; at least one spray system having one or more spray rails, positioned at each of an upper spray station and a lower spray station, each spray rail, being in communication with a source for supplying water and air to one or more nozzles, at a predetermined water flow rate and a predetermined air pressure; and at least one aspiration system having one or more aspiration hoods, positioned downstream of each spray rail,, each aspiration hood, being in communication with a source for supplying air at a predetermined air flow rate; such that, during the mixing and cooling process, the mixing and cooling installation sprays the continuous sheet and evacuates the air containing the evaporated water in order to produce the rubber mixture at target values of temperature and water content before a complementary mixing process.