Patent ID: 7806680

Claim:
An installation ( 10 , 10 ′) producing sterile bottles ( 14 ) by blow molding starting from plastic preforms ( 12 ), where the preforms ( 12 ) are conveyed to the interior of the installation ( 10 , 10 ′) in a continuous stream which flows from upstream to downstream, including: a sterilizing treatment unit ( 26 ) including an atomizing device ( 36 ) provided with at least one nozzle ( 38 ) which sprays a stream (F) of sterilizing product in the form of a jet towards the neck ( 16 ) of each preform ( 12 ) during treatment, with the aim of sterilizing at least the internal walls ( 50 ) of the preform ( 12 ), a thermal conditioning unit ( 28 ), including at least one oven ( 40 ) which heats the preforms ( 12 ), a molding unit ( 30 ) including at least one mold ( 42 ) and at least one blow-molding device ( 44 ) which subjects each preform ( 12 ) to internal overpressure in such a way that it assumes the shape of the mold cavity ( 42 ), producing a bottle ( 14 ), characterized in that the mean axis (A 2 ) of spraying of the nozzle ( 38 ) is generally parallel to the axis (A 1 ) of the preform ( 12 ) during treatment and is radially off-center with regard to the axis (A 1 ) of the preform ( 12 ), and in that the form in which the stream (F) of sterilizing product is sprayed at the interior of the preform ( 12 ) is that of laminar flow.