Abstract: A method for producing a nonwoven for the manufacture of filter rods in the tobacco industry includes separating fibers of at least one type of filter material in at least one separating device having at least one separating element rotating about a rotational axis. The separated fibers are fed to a conveyor moving in a conveying direction such that the separated fibers form the nonwoven.

Abstract: The invention relates to a method for producing a nonwoven fiber composite for the manufacture of filters in the tobacco industry, wherein the method feeds separated fiber materials to a fluidized bed and the separated filter material inside the fluidized bed are transported to a rod-forming device, essentially by a transport air flow flowing in the direction of the rod-forming device and the filter material is compiled on the rod-forming device prior to forming the compacted fiber filter elements.

Abstract: A roller for a device for processing a filter material ribbon in the tobacco-processing industry. The roller comprises a roller core and a covering for the roller core. The roller has at least one wear indicator operatively arranged for indicating wear of the covering.

Abstract: A method and apparatus for supplying an additive to a moving web of filter material of the tobacco-processing industry are provided. An adjustable window defines an opening, and additive is applied through the window opening onto the web.

Abstract: Filter and process for producing filter for articles of the tobacco processing industry. The filter includes at least one filter component of multiple-component fibers. The multiple-component fibers have lengths shorter than a length of the filter. The process includes producing a rod including at least one type of multiple-component fibers having lengths shorter than a length of the filter to be produced. Further, the multiple-component fibers have a casing. The process further includes heating the rod to a temperature above a melting temperature of the casing, and cooling the rod to a temperature below the melting temperature of the casing. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: The apparatus of the present invention is utilized to treat a wrapped rod-like filler, particularly that consisting of a tow of filamentary filter material which is impregnated with droplets of triacetin of another softening agent that sets more rapidly and/or more reliably in response to heating. The wrapped filler is severed to yield a series of discrete sections, such as filter mouthpieces for use in filter cigarettes. In accordance with the invention, the wrapped filler is or successive sections of the wrapped filler are heated upstream or downstream of the severing station, preferably in a casing containing an elongated guide for the running wrapped filler or for successive discrete sections of the wrapped filler.

Abstract: A method and arrangement are provided for producing compound filters for products in the tobacco-processing industry. A filter tube, having a filter element in a central region of the filter tube, is supplied to a predetermined position. Predetermined portions of filtering material are then inserted into the filter tube from at least a first end of the filter tube so that filter segments form in at least a first part of the filter tube.

Abstract: A tow of filamentary filter material for tobacco smoke is stretched between an upstream pair and a downstream pair of advancing rolls. Suction nozzles are provided to evacuate air from those portions of the path for the tow which are located immediately upstream and immediately downstream of the path section at the nip of the downstream advancing rolls. This prevents eddying of air at the nip and a fluttering of filaments of the tow.

Abstract: A tow of filamentary filter material for tobacco smoke is stretched between an upstream pair and a downstream pair of advancing rolls. Suction nozzles are provided to evacuate air from those portions of the path for the tow which are located immediately upstream and immediately downstream of the path section at the nip of the downstream advancing rolls. This prevents eddying of air at the nip and a fluttering of filaments of the tow.