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: Process and device for assembling groups of filter segments in a rod process. The process includes providing a plurality of different types of filter segments, assembling the plurality of different types of filter segments into a group of filter segments, and dividing the group of filter segments into at least two part groups of filter segments. The filter segments of each part group adjoin each other in a lengthwise axial manner. 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 apparatus for producing multi-segment filter elements in the tobacco-processing industry. The multi-segment filter elements each include a first filter segment and at least one second filter segment. A sleeve element is arranged in the first filter segment. The second filter segment is inserted into the sleeve element in the first filter segment and the sleeve element is pulled out.

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: A filter for use in the tobacco processing industry includes a wrapping material section wrapped around filtering material and a covering paper section fitted around the wrapping material section. The covering paper section comprises at least one window and the wrapping material section is transparent, at least in some areas.

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.