Method and arrangement for producing compound filters

An apparatus for producing compound filters for products in the tobacco-producing industry, comprising:

• a filter-tube feeding element;
• at least one conveyor into which filter tubes are insertable from the feeding element;
• and
• at least one processing station for being supplied with the filter tubes by the at least one conveyor, wherein at least one of the processing stations is a filtering materials insertion station including means for inserting two portions of filtering materials into a filter tube in a single operational step,
• wherein at least one of the processing stations comprises a filtering material feeding station that includes two rotating and eccentrically arranged discs that are respectively provided with bores, with the bores of one disc and the bores of the other disc being positioned so that they are aligned at one location.

An arrangement for manufacturing compound filters for products in the tobacco-processing industry, comprising:

• a filter tube feeding element;
• a plurality of processing stations;
• and
• a single conveyor into which filter tubes are deposited from the feeding element for supplying the filter tubes to the processing stations wherein one of the processing stations comprises at least one removal station.

An arrangement for manufacturing compound filters for products in the tobacco-processing industry, comprising:

• a filter tube feeding element;
• a plurality of processing stations;
• and
• a single conveyor into which filter tubes are deposited from the feeding element for supplying the filter tubes to the processing stations wherein one of the processing stations comprises at least one filtering material feeding station and the at least one filtering material feeding station comprises two off-center arranged rotating discs that are respectively provided with bores, with the bores of one disc and the bores of the other disc being arranged so as to be aligned at one location.

An arrangement for manufacturing compound filters for products in the tobacco-processing industry, comprising:

• a filter tube feeding element;
• a plurality of processing stations;
• and
• a single conveyor into which filter tubes are deposited from the feeding element for supplying the filter tubes to the processing stations wherein one of the processing stations comprises at least one filtering material feeding station and the at least one filtering material feeding station comprises two off-center arranged rotating discs that are respectively provided with bores, with the bores of one disc and the bores of the other disc being arranged so as to be aligned at one location, further including means for axially aligning the at least one filter tube with at least one of the bores.

An apparatus for producing compound filters for products in the tobacco-producing industry, comprising:

• a filter-tube feeding element;
• a single conveyor into which filter tubes are insertable from the feeding element;
• and
• a plurality of processing stations for being supplied with the filter tubes by the conveyor, wherein at least one of the processing stations is a filtering materials insertion station including means for inserting two portions of filtering materials into a filter tube in a single operational step.

A compound filter manufacturing system for products in the tobacco-processing industry, comprising:

• a filter-tube feeding apparatus;
• a single conveyor for conveying filter tubes supplied by the filter-tube feeding apparatus along a predetermined movement path;
• and
• a plurality of processing stations receiving filter tubes from the conveyor, said processing stations including at least one processing station for inserting at least two portions of filtering materials into at least one filter tube during one operational step.