Method and device for producing a melt and/or plastic film

A device for producing a monoaxially or biaxially stretched plastic film, the device comprising:

• an extruder,
• a cooling roller, to which a melt film or plastic film is fed from the extruder and is placed along a contact line on a roller jacket of the cooling roller, from where the melt or plastic film is conveyed over a partial wrap angle around the cooling roller,
• wherein a wedge-shaped intermediate space tapering towards the contact line is formed between the melt or plastic film and the roller jacket, a geometry of the intermediate space being defined by a plane of the melt or plastic film between the extruder and contact line, a portion of the roller jacket facing the plane of the melt or plastic film, and a plane extending from the roller jacket to an opposing line extending across the width of the melt or plastic film, the opposing line being spaced from both the extruder and the contact line, and the plane of the melt or plastic film defining an acute angle with the roller jacket at the contact line,
• wherein the device further comprises at least one device for preventing condensate from precipitating on the underside of the melt or plastic film facing the roller jacket, on the roller jacket, or on a roller surface of the cooling roller, wherein the at least one device for preventing condensate is provided entirely within the intermediate space and is designed such that:
• a) precipitation of condensate on the underside of the melt or plastic film facing the roller jacket, and/or on the roller jacket is prevented by means of a portion of a cover device or shielding device,
• b) precipitated condensate evaporates or vaporises, and/or
• c) condensate located in the intermediate space is transported away, suctioned off, blown off, and/or run out.