Abstract: A molding unit for producing a container, that includes: —a mold having the footprint of the container, including a pair of shells each having an inner wall; —a pair of shell holders onto each of which a shell is removably attached; —a device for controlling the temperature of the mold, that includes: ?at least one radiator integrated into a shell holder, ?at least one temperature probe integrated into a shell, for measuring the temperature in the vicinity of the inner wall, ?a variator connected to the temperature probe and to the radiator, the variator being arranged to modulate the temperature of the radiator depending on the temperature measured by the probe.