A system for producing rubber mixtures having expected properties comprising: a series of rubber mixture production installations (20, 100, 100', 200, 300, 400) that define monopassage and multipassage sequences of rubber mixture production, each rubber mixture production installation permitting execution of at least one rubber mixture production process, and the rubber mixture production installations including at least one initial mixing installation configured to perform an initial mixing process and at least two mixing and cooling installations (100, 100') configured to perform a mixing and cooling process; a feed belt configured to direct a rubber mixture from the initial mixing installation to at least one of two mixing and cooling installations (100,100'); and a transport means (240, 252) configured to sequentially direct the rubber mixture to at least one rubber mixing installation (20, 100, 100', 200, 300, 400) according to a rubber mixture recipe selected for producing a rubber mixture having expected properties, characterized in that: a first direction of the feed belt for conveying a first rubber mixture to a first conveyor belt toward a first mixing and cooling installation and another direction of the feed belt for conveying another rubber mixture to a second conveyor belt toward a second mixing and cooling installation, with each mixing and cooling installation (100, 100') comprising: at least one external mixer in which a pair of cylinders (110, 110') is configured to transform the rubber mixture into a continuous sheet; at least one spray system in which one or more spray rails (124, 124', 126, 126') are positioned at each of an upper spray station (102, 102') and a lower spray station (104, 104'), each spray rail (124, 124', 126, 126') 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 in which one or more aspiration hoods (134, 134' 136, 136') are positioned downstream of each respective spray rail (124, 124', 126, 126'), each aspiration hood (134, 134', 136, 136') being in communication with a source for supplying air at a predetermined air flow rate; such that, during the mixing and cooling process, each mixing and cooling installation (100, 100') is configured to spray a respective continuous sheet and is configured to evacuate 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 installations (20, 100, 100', 200, 300, 400) that define monopassage and multipassage sequences of rubber mixture production, each rubber mixture production installation permitting execution of at least one rubber mixture production process, and the rubber mixture production installations including at least one initial mixing installation configured to perform an initial mixing process and at least two mixing and cooling installations (100, 100') configured to perform a mixing and cooling process; a feed belt configured to direct a rubber mixture from the initial mixing installation to at least one of two mixing and cooling installations (100,100'); and a transport means (240, 252) configured to sequentially direct the rubber mixture to at least one rubber mixing installation (20, 100, 100', 200, 300, 400) according to a rubber mixture recipe selected for producing a rubber mixture having expected properties, characterized in that: a first direction of the feed belt for conveying a first rubber mixture to a first conveyor belt toward a first mixing and cooling installation and another direction of the feed belt for conveying another rubber mixture to a second conveyor belt toward a second mixing and cooling installation, with each mixing and cooling installation (100, 100') comprising: at least one external mixer in which a pair of cylinders (110, 110') is configured to transform the rubber mixture into a continuous sheet; at least one spray system in which one or more spray rails (124, 124', 126, 126') are positioned at each of an upper spray station (102, 102') and a lower spray station (104, 104'), each spray rail (124, 124', 126, 126') 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 in which one or more aspiration hoods (134, 134' 136, 136') are positioned downstream of each respective spray rail (124, 124', 126, 126'), each aspiration hood (134, 134', 136, 136') being in communication with a source for supplying air at a predetermined air flow rate; at least one external mixer in which a pair of cylinders (110, 110') is configured to transform the rubber mixture into a continuous sheet; at least one spray system in which one or more spray rails (124, 124', 126, 126') are positioned at each of an upper spray station (102, 102') and a lower spray station (104, 104'), each spray rail (124, 124', 126, 126') 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 in which one or more aspiration hoods (134, 134' 136, 136') are positioned downstream of each respective spray rail (124, 124', 126, 126'), each aspiration hood (134, 134', 136, 136') being in communication with a source for supplying air at a predetermined air flow rate;