A method for producing a monoaxially or biaxially stretched plastic film, in particular as a separator film for batteries or accumulators, with the following features: - a melt film or plastic film (5, 5') is fed to a cooling roller (1, 1') and placed along a contact line (11, 11') onto the roller jacket of the cooling roller (1, 1'), from where the melt film or plastic film is conveyed at least over a partial wrap angle in the rotational direction of the cooling roller (1, 1'), - in the intermediate space tapering in a wedge shape towards the contact line (111, 11') between the melt film or plastic film (5, 5') and the roller jacket spaced apart therefrom or the roller surface of the cooling roller (1, 1') spaced apart therefrom, at least one device for preventing precipitation of condensate in the intermediate space is used and is designed such that a precipitation of condensate (a) on the underside of the melt film or plastic film (5, 5') facing the roller jacket or on the roller jacket of the cooling roller (1, 1') is prevented by using a cover device or shielding device characterised by the following features: - in the intermediate region a cover device or shielding device in the form of a shielding mat (21, 21") and/or in the form of a shielding wall is used which is held in a non-rotating manner and/or in place with respect to the rotating cooling roller (1, 1'), the shielding mat (21, 21") and/or the shielding wall resting on the roller jacket in a partial circumferential area and preferably extending in the longitudinal direction of the cooling roller (1, 1') at least in the area of the melt film or plastic film (5, 5') and preferably beyond, - wherby the shielding mat (21, 21") and/or the shielding wall is arranged such that it terminates at a distance in front of the contact line (11, 11') and such that the cooling roller (1, 1') rotates beneath the shielding mat (21, 21") and/or the shielding wall in the rotational direction. - a melt film or plastic film (5, 5') is fed to a cooling roller (1, 1') and placed along a contact line (11, 11') onto the roller jacket of the cooling roller (1, 1'), from where the melt film or plastic film is conveyed at least over a partial wrap angle in the rotational direction of the cooling roller (1, 1'), - in the intermediate space tapering in a wedge shape towards the contact line (111, 11') between the melt film or plastic film (5, 5') and the roller jacket spaced apart therefrom or the roller surface of the cooling roller (1, 1') spaced apart therefrom, at least one device for preventing precipitation of condensate in the intermediate space is used and is designed such that a precipitation of condensate (a) on the underside of the melt film or plastic film (5, 5') facing the roller jacket or on the roller jacket of the cooling roller (1, 1') is prevented by using a cover device or shielding device - in the intermediate region a cover device or shielding device in the form of a shielding mat (21, 21") and/or in the form of a shielding wall is used which is held in a non-rotating manner and/or in place with respect to the rotating cooling roller (1, 1'), the shielding mat (21, 21") and/or the shielding wall resting on the roller jacket in a partial circumferential area and preferably extending in the longitudinal direction of the cooling roller (1, 1') at least in the area of the melt film or plastic film (5, 5') and preferably beyond, - wherby the shielding mat (21, 21") and/or the shielding wall is arranged such that it terminates at a distance in front of the contact line (11, 11') and such that the cooling roller (1, 1') rotates beneath the shielding mat (21, 21") and/or the shielding wall in the rotational direction.