Container treatment device with a gas curtain

Equipment for treating open-beverage containers (3), for instance filling or sealing them, comprising a treatment site (1) being fed a container (3) for purposes of treatment and being fitted with a treatment implement (2) acting from above on the mouth (6) of the container (3), further comprising slot nozzles (4) which are configured laterally of the treatment site (2) and which blow off a clean gas and are arrayed in a manner to generate a gas curtain protecting the mouth (6) of the container (3),

• wherein the slot nozzles (4) are configured in substantially mutually opposite air jet directions in such manner that a rammed flow is generated between the slot nozzles (4) comprising, relative to the plane of symmetry (S), upward and downward flow components that issue from the region of the slot nozzles (4), the mouths (6) of the containers (3) in the treatment position being configured in one of the flow components, the slot nozzles (4) being configured to communicate at least upward or downward with the free atmosphere.