Filter tow bale, method and device for producing a filter tow bale and filter tow strips

Abstract

The invention relates to a filter tow bale ( 2 ) from compressed filter tow, which is characterized in that the filter tow bale ( 2 ) comprises at least two separate filter tow strips ( 1, 1 ′) that are arranged together in layers.

1 . A filter tow bale made of compressed filter tow, wherein characterised in that the filter tow bale comprises at least two separate filter tow strips which are arranged layer-wise. 
     
     
         2 . A filter tow bale according to  claim 1 , wherein the at least two filter tow strips are arranged in the bale chaotically and are heaped in paths. 
     
     
         3 . A filter tow bale according to  claim 1 , wherein two filter tow strips in the filter tow bale are arranged substantially in parallel paths next to one another and have a spacing which is at least 0 cm and at most less than half the bale width. 
     
     
         4 . A filter tow bale according to  claim 1 , wherein the at least two filter tow strips are arranged overlapping at least in portions and have an overlap region. 
     
     
         5 . A filter tow bale according to  claim 4 , wherein the overlap region has a degree of overlapping of 90% to 10%. 
     
     
         6 . A filter tow bale according to  claim 1 , wherein the filter tow strips are folded into one another and in each case have a fold edge. 
     
     
         7 . A filter tow bale according to  claim 6 , wherein the fold edges are substantially arranged one above the other. 
     
     
         8 . A filter tow bale according to  claim 6 , wherein the fold edges are arranged substantially opposing. 
     
     
         9 . A filter tow bale according to  claim 6 , wherein the fold edge of one filter tow strip in each case encloses the longitudinal edge of the other filter tow strip. 
     
     
         10 . A device for producing a filter tow bale from a filter tow, comprising:
 a can for depositing the filter tow;   an inserting device which cooperates with the can;   means for simultaneously producing at least two separate filter tow strips together, layer-wise, in the can.   
     
     
         11 . A device according to  claim 10 , wherein means for simultaneously producing at least two filter tow strips comprises a plurality of spinning machines or a multiple spinning machine. 
     
     
         12 . A device according to  claim 10 , wherein the means for simultaneously producing at least two filter tow strips comprises a plurality of crimping machines or a multiple crimping machine which is loaded with two separate filter tow strips. 
     
     
         13 . A device according to  claim 12 , wherein the means for simultaneously producing at least two filter tow strips further comprises at least one separating device for separating the filter tow strips which is arranged downstream of the crimping machine. 
     
     
         14 . A device according to  claim 13 , wherein the separating device comprises at least two guide rings arranged spaced apart and transverse to a conveying direction of the filter tow strip. 
     
     
         15 . A device according to  claim 14 , wherein a guiding ring is arranged upstream of the two guide rings in the conveying direction. 
     
     
         16 . A device according to  claim 13 , wherein the separating device comprises at least one separating wedge arranged downstream of the crimping machine. 
     
     
         17 . A device according to  claim 13 , wherein the inserting device comprises means for depositing the at least two filter tow strips together in the can. 
     
     
         18 . A method for producing a filter tow bale in a double filter rod machine, comprising the steps of:
 producing in which at least two separate filter tow strips simultaneously;   depositing the at least two separate filter tow strips together, layer-wise, in a can; and   pressing the deposited filter tow strips into a bale form.   
     
     
         19 . A method according to  claim 18 , wherein the depositing step comprises depositing the filter tow strips in an overlapping manner at least in portions in the can. 
     
     
         20 . A method according to  claim 18 , wherein the producing step comprises separating a common filter tow strip, the separating taking place in or after action by a crimping machine or before or during the step of depositing the at least two separate filter tow strips in the can. 
     
     
         21 . A filter tow strip made of cross-linked and crimped filaments, comprising at least two partial strips, arranged at least partly, in an overlapping manner and connected in an overlap region by a mechanical surface force. 
     
     
         22 . A device for producing a filter tow bale from a filter tow, comprising:
 A can for depositing the filter tow;   an inserting device which cooperates with the can;   means for providing at least two separate filter tow strips together, layer-wise, in the can.