Process station for a parison or a container made of thermoplastic material, apparatus for processing parisons or containers, production and packaging line for producing and packaging the containers and method for producing and packaging containers

A production and packaging line (100) for producing and packaging containers (2) made of thermoplastic material, comprising a plurality of processing apparatuses (10, 11, 12, 13, 14, 15) for processing said containers (2) or parisons having a neck (2a) with threaded zone and a bague (2c) located below said threaded zone, each of said processing apparatuses (10, 11, 12, 13, 14, 15) comprising a plurality of process stations (1), each of which in turn comprises:

• a concave shell (3) configured to be applied onto a mouth (2b) of the individual parison or container (2) in such a manner as to enwrap at least partially the neck (2a) of the parison or container (2) so as to delimit a volume (4) to be treated of said neck (2a), said volume (4) to be treated not containing the bague (2c) of said parison or container (2), each process station (1) having its own concave shell (3) for defining the volume (4) for treatment of the individual neck (2a) present therein;
• a source (5) of fluid that is operatively active on said volume (4) to be treated, for supplying a flow of fluid around the neck (2a) of the parison or container (2) for the purpose of preventing contaminants from entering said volume (4) to be treated,
• wherein the process stations (1) of a first processing apparatus (10, 11, 12, 13, 14, 15) have concave shells (3) that have a lateral surface that is counter-shaped with respect to the lateral surface of the concave shells (3) of the process stations (1) of a second processing apparatus (10, 11, 12, 13, 14, 15) which follows or precedes the first processing apparatus (10, 11, 12, 13, 14, 15) along the production and packaging line (100).