Configuration for producing coaxial filters for rod-shaped smoking articles, such as cigarettes for example, comprising - a filter strand producing device provided as a means of producing a single filter strand wrapped with paper but fulfilling no cutting function, - a processing unit for processing a filter tow strip, - a finishing unit, in particular a strand producing machine, which is provided in the form of a finishing unit for finishing single filter tow strips, and - a coaxial filter producing device comprising - a wrapping unit which is configured to wrap the filter strand with the filter tow strip serving as an additional filter tow strip in order to form a coaxial filter tow strand, - a filter strand path, along which the filter strand can be moved in the direction of its longitudinal extension to the wrapping unit, and - a tow guide path, along which the additional filter tow strip can be moved in the direction of its longitudinal extension to the wrapping unit, characterised in that - the filter strand producing device has an outlet side interface, - the processing unit has an outlet side interface and is configured to process the additional filter tow strip in such a way that an essentially opened-flat shape is imparted to it, - the tow guide path is configured so that the additional filter tow strip can be moved along it in the direction of its longitudinal extension to the wrapping unit in an essentially opened-flat shape, - the finishing unit has an inlet side interface, and - the coaxial filter producing device further comprises - a first interface disposed upstream of the wrapping unit from which the filter strand path leads to the wrapping unit and which is connected to the outlet side interface of the filter strand producing device, - a second interface disposed upstream of the wrapping unit from which the tow guide path leads to the wrapping unit and which is connected to the outlet side interface of the processing unit, and - a third interface disposed downstream of the wrapping unit which is connected to an inlet side interface of the finishing unit provided as a means of finishing single filter tow strips. - a filter strand producing device provided as a means of producing a single filter strand wrapped with paper but fulfilling no cutting function, - a processing unit for processing a filter tow strip, - a finishing unit, in particular a strand producing machine, which is provided in the form of a finishing unit for finishing single filter tow strips, and - a coaxial filter producing device comprising - a wrapping unit which is configured to wrap the filter strand with the filter tow strip serving as an additional filter tow strip in order to form a coaxial filter tow strand, - a filter strand path, along which the filter strand can be moved in the direction of its longitudinal extension to the wrapping unit, and - a tow guide path, along which the additional filter tow strip can be moved in the direction of its longitudinal extension to the wrapping unit, - a wrapping unit which is configured to wrap the filter strand with the filter tow strip serving as an additional filter tow strip in order to form a coaxial filter tow strand, - a filter strand path, along which the filter strand can be moved in the direction of its longitudinal extension to the wrapping unit, and - a tow guide path, along which the additional filter tow strip can be moved in the direction of its longitudinal extension to the wrapping unit, - the filter strand producing device has an outlet side interface, - the processing unit has an outlet side interface and is configured to process the additional filter tow strip in such a way that an essentially opened-flat shape is imparted to it, - the tow guide path is configured so that the additional filter tow strip can be moved along it in the direction of its longitudinal extension to the wrapping unit in an essentially opened-flat shape, - the finishing unit has an inlet side interface, and - the coaxial filter producing device further comprises - a first interface disposed upstream of the wrapping unit from which the filter strand path leads to the wrapping unit and which is connected to the outlet side interface of the filter strand producing device, - a second interface disposed upstream of the wrapping unit from which the tow guide path leads to the wrapping unit and which is connected to the outlet side interface of the processing unit, and - a third interface disposed downstream of the wrapping unit which is connected to an inlet side interface of the finishing unit provided as a means of finishing single filter tow strips.