Abstract: The present invention provides a two-stage process for removing polyunsaturated hydrocarbons from C4 hydrocarbon streams that, in addition to C4 hydrocarbons, also contain C5 hydrocarbons and mercaptans and/or disulfides.

Abstract: A device for combining groups of at least two different types of filter segments for producing multi-segment filters in the tobacco industry in a continuous process includes a plurality of independent functional units that are each designed as a module.

Abstract: A device for processing filter tow material used for producing filters for rod-shaped smoking articles such as cigarettes. The device includes a filter tow supply to provide at least two filter tow strips to at least two filter tow guideways. Each of the at least two filter tow strips is directed within the at least two filter two guideways, respectively. Apparatuses are also provided for processing the filter tow strips. The device includes a separately controllable independent processing apparatus assigned to each filter tow guideway.

Abstract: Method and device for producing filter rods of the tobacco-processing industry. The method includes combining and mixing fibers of finite length of two different fiber types, and separating the combined and mixed fibers. The combining and mixing occurs directly before the separating.

Abstract: A processing unit for processing at least one filter tow strip to produce filters for rod-shaped smoking articles includes at least one tow guidance section along which the filter tow strip is moved in a direction of a longitudinal extension of the filter tow strip. The tow guidance section includes processing devices used for processing the filter tow strip. The processing devices are arranged in a sequence essentially one above the other, so that at least a segment of the tow guidance section that is located in a region of the processing devices is oriented at an angle to a horizontal line.

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: Method and device for producing a filter rod. The method includes melting at least one first type of filter material, pressing the at least one first type of filter material through at least one nozzle, depositing the at least one first type of filter material on a conveying element, and shaping the filter rod on the conveying element. 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: Method and device for producing filter rods of the tobacco-processing industry. The method includes combining and mixing fibers of finite length of two different fiber types, and separating the combined and mixed fibers. The combining and mixing occurs directly before the separating.

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: A device for processing filter tow material used for producing filters for rod-shaped smoking articles such as cigarettes. The device includes a filter tow supply to provide at least two filter tow strips to at least two filter tow guideways. Each of the at least two filter tow strips is directed within the at least two filter two guideways, respectively. Apparatuses are also provided for processing the filter tow strips. The device includes a separately controllable independent processing apparatus assigned to each filter tow guideway.

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: Method and device for spreading an additive onto a moving filter material web of the tobacco-processing industry, and an apparatus for preparing filter material webs of the tobacco-processing industry including the device. The method includes warming the additive with at least one heating device, monitoring a heating output of the at least one heating device, and spreading the additive with at least one spreading element. 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: Filter, method of forming filter, and filter cigarette. The filter includes at least a first filter component composed of polyethylene fibers and a second filter component composed of a granulate. 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: 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: 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 method of making a non-wrapped filter rod in the field of the tobacco processing industry, includes the steps of applying filter material to a forming belt where the filter material is substantially fully separated prior to being applied to the forming belt; shaping the filter material in a forming apparatus into the filter rod; and exposing the formed filter rod in the forming apparatus to energy to obtain a bond of the filter material. In addition, an apparatus for making a non-wrapped filter rod includes a fiber shower-producing apparatus where substantially fully separated fibers of a filter material may be accumulated to form a non-woven web; and a forming apparatus having a moveable forming belt for receiving the separated fibers of the filter material where the forming belt is capable of being wound about filter material of finite length to produce a filter rod.

Abstract: Method and device for producing a filter rod. The method includes melting at least one first type of filter material, pressing the at least one first type of filter material through at least one nozzle, depositing the at least one first type of filter material on a conveying element, and shaping the filter rod on the conveying element. 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 invention relates to a method for processing filter material for use in the manufacture of tobacco industry filters wherein a mass of finite fibers is feed to a separating device wherein finite fibers are separated into essentially individual separated fibers and then transported to a continuous rod machine.

Abstract: A method and machine produces a continuous filter rod. At least one type of finite, essentially completely separated fibers is transported with transport air to a conveyor. A fiber nonwoven is formed on one surface of the conveyor to result in the fibers at least partially contacting one another. The fiber nonwoven is deposited onto a wrapping material web. The fiber nonwoven is then wrapped a material web.

Abstract: A device for combining groups of at least two different types of filter segments for producing multi-segment filters in the tobacco industry in a continuous process includes a plurality of independent functional units that are each designed as a module.