Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
  • A24D3/04—Tobacco smoke filters characterised by their shape or structure
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
  • A24D3/02—Manufacture of tobacco smoke filters
  • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
  • A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite filters

Definitions

• the invention relates to a multi-segment filter of the tobacco-processing industry with at least two filter segments arranged longitudinally one behind the other and a method for producing a multi-segment filter of the tobacco-processing industry, wherein a group of filter segments is put together and the group of filter segments is coated with a first encapsulation material to form a multi-segment filter.
• a multi-segment filter can consist of segments such as, for example, conventional cellulose acetate, which consists of a cellulose acetate tow is made with a plasticizer and is permeable to smoke, filter segments with carbon active particles, sintered pellets, empty or filled with granules, fleece, etc.
• the US-PS 4,026,306 describes a three fachfi 1 ter (hollow chamber / stopper / hollow chamber) which is covered with a cell uloseacetattow, the acetate serving as a filter medium and the stopper for deflecting the smoke through the filter material.
• US Pat. No. 3,492,998 shows a filter which is constructed from filter material disks and is surrounded by two sleeves, the sleeves being made of paper, cork or a plastic material such as polyethylene.
• Corresponding multisegment filters are produced, for example, with a so-called Mulfi-E from the applicant.
• This is a production line for the production of double filter rods from different basic filter rods.
• the Mulfi-E production line consists of the so-called GC-E for cutting and grouping the basic filter rods and a filter rod machine KDF 2E for wrapping the double filter segments and for cutting the 4-fold or 6-fold double filter rods.
• GC-E so-called GC-E for cutting and grouping the basic filter rods
• KDF 2E filter rod machine
• These machines are known to specialist traffic and the specialist public.
• a corresponding device by means of which a method for producing multi-segment filters can be carried out is described in DE-OS 15 34 666.
• Mul tisegmentfil tern In the manufacture of Mul tisegmentfil tern it can lead to the fact that the filter segments, especially in hard filter segments, such as extruded or injection molded filter segments, due to the manufacturing tolerances that filter segments are arranged side by side, which have different diameters. If these filter segments are then coated as usual with a wrapping material made of paper or, as in US Pat. No. 3,492,998, with a polyethylene, an undesirable effect can occur, namely that a cavity is formed between the wrapping material and at least one filter segment, which leads to this can that smoke can be drawn through this cavity bypassing the filter effect of the corresponding filter element with a smaller diameter. The result of this is that the filter properties of the multisegment filter can be changed in an undesirable manner or can be partially canceled entirely. Another difficulty is that when wrapping the cigarette-filter-cigarette group with covering paper with filters . Hard segments can damage the hard segments or the tipping paper can be damaged due to the inconsistency of the hard segments and the compressibility of the cigarettes
• a multi-segment filter of the tobacco processing industry with at least two filter segments arranged longitudinally one behind the other, which is further developed in that a compressible and / or elastic first wrapping material is arranged around the outside of the filter segments.
• the compressible and / or elastic first wrapping material is in particular arranged longitudinally axially around the filter segments;
• a particularly preferred embodiment of a multi-segment filter according to the invention is present when the first wrapping material is essentially smoke-impermeable or completely smoke-impermeable.
• the multi-segment filter according to the invention no smoke can get past the desired filter materials, even with differences in diameter.
• ventilation holes are provided in the first wrapping material, as is also the case with normal wrapping material. If the first wrapping material is the outermost layer of the multi-segment filter, the multi-segment filter can be produced particularly easily and quickly, which is also inexpensive.
• a second wrapping material is arranged on the outside around the first wrapping material, customary outermost wrapping materials can be used, which have hitherto also been used in the production of multi-filter filters.
• the first encapsulation material preferably comprises a closed-pore foam.
• a correspondingly closed-pore foam is on the one hand essentially impermeable to smoke and on the other hand can be designed in such a way that it can be compressed even with low acting forces.
• the first encasement material preferably consists of a closed-cell foam.
• the closed-pore foam comprises foamed cellulose acetate
• a material can be used which is very well known for its composition in the tobacco processing industry for the production of filters.
• the foamed Cel 1 ul oseacetat here, in contrast to the cell ul oseacetat made from a tow with plasticizer, is also essentially impermeable to smoke.
• the closed-pore foam preferably consists of foamed cellulose acetate.
• the closed-pore foam is preferably a hot-melt foam such as, for example, made of ethylene vinyl acetate copolymer.
• the first encapsulation material preferably comprises and / or consists of hot melt glue, such as, for example, an ethylene vinyl acetate copolymer.
• the first wrapping material can comprise and / or consist of a Cel 1 uloseacetattow with strong crimp and without a plasticizer such as triacethine.
• the first wrapping material can be an air-laid fleece, which is produced by a method that is described in EP 003 20 44 B1.
• the invention is further achieved by a method for producing a multi-segment filter of the tobacco processing industry, wherein a group of filter segments is put together and the group of filter segments is coated with a first wrapping material to form a multi-segment filter, the first wrapping material being compressible and / or elastic ,
• multi-segment filters can be produced which, on the one hand, enable the diameter differences of the filter segments to be compensated for and, in the case of decompressible material, on the other hand have an outside diameter which is uniform.
• conventional Mul tiseg de-filtering devices such as the Mulfi-E from the applicant can be used.
• the wrapping material normally used consisting of a paper strip, that is to be replaced by a wrapping material that is compressible and / or elastic. Care must be taken here that the compressible wrapping material is not already compressed on the way to the multi-segment filter.
• the first wrapping material is preferably essentially smoke-impermeable or completely smoke-impermeable. If the first wrapping material is wrapped with a second wrapping material in a further method step, the subsequent handling of the multisegment filter is simplified.
• the object is further achieved by using a compressible and / or elastic wrapping material for wrapping a group of filter segments of the tobacco processing industry to form a multi-segment filter.
• a smoke-impermeable or essentially smoke-impermeable first wrapping material is also preferably used for wrapping a group of filter segments of the tobacco processing industry to form a multi-segment filter.
• FIG. 1 is a schematic side view of a multi-segment filter manufacturing device, comprising a strand forming device and a group forming device according to FIG. DE-OS 24 52 749,
• Fig. 2 is a schematic cross-sectional view of a multi-segment filter
• FIG. 3 shows an enlarged illustration of a detail from FIG. 2.
• the same elements are denoted by the same reference numerals, so that a renewed introduction is dispensed with.
• the multi segment filter manufacturing device shown in FIG. 1. The state of the art is structured as follows:
• the strand forming device 1 is assigned a group forming device 2 working in the transverse process, which has two storage containers 3 and 4, in which filter rods 6 and 7 of a first and second type are located.
• a group forming device 2 working in the transverse process, which has two storage containers 3 and 4, in which filter rods 6 and 7 of a first and second type are located.
• removal drums 8 and 9 respectively, to which a cutting device 11 and 12 is assigned, which cut through the filter rods 6 and 7 removed from the storage containers 3 and 4.
• the rows of filter sections thus formed are then pulled apart by an accelerator drum 18 or 19, so that there are larger distances between the individual filter sections.
• filter sections on cutting drums 21 and 22, to which a cutting device 23 and 24 is also assigned, are then cut again.
• the again cut filter sections are pulled apart again on the cutting drums 21 and 22 at the same time, so that between the individual Elements create larger gaps.
• elements of filter rods of the respective other type are subsequently inserted on a compilation drum 26, and in this way filter rod groups 27 are formed, which are composed of several elements of the different filter types.
• the filter rod groups 27 are then aligned longitudinally axially to the conveying direction by a delivery means in the form of a transfer device or turning drum 28 and are continuously transferred in gapless formation to a wrapping strip 31 of the strand forming device 1 drawn off from a bobbin 29.
• the transfer takes place, for example, according to DE-OS 25 34 666.
• a first Belei ungsvorraum 32 indicated by a glue reservoir 33 and two application nozzles 34 and 36 is provided, which applies an internal gluing in the form of two adjacent, parallel glue strips on the wrapping strips 31.
• a second gluing device 37 indicated by a glue storage container 38 and a glue application nozzle 39, provides the wrapping strip 31 in the region of an edge with a glue strip for the seam gluing. It goes without saying that if necessary, only one glue strip or more than two glue strips can be provided for the inner gluing.
• the glue storage container 33 of the first gluing device 32 contains cold glue and the storage container 38 of the second gluing device 37 contains a hot melt adhesive
• the depositing area 41 of the turning drum 28 underneath the U covering strip 31 there is a means 42 for
• the inner gluing is provided in the form of a heating device 43, which ensures that the inner lining applied by the glue application nozzles 34 and 36 sets immediately after the filter rod groups 27 have been deposited and the filter rod groups 27 in this way immediately after being deposited on the wrapping strip 31 are fixed so that they can no longer be moved by external influences, such as subsequent filter rod groups.
• the heating device 43 activates the hot melt adhesive for seam gluing.
• the filter rod groups 27 fixed in this way to form a continuous row then pass through a molded part in the form of a format chamber 44, in which the covering strip 31 is placed around the filter rod groups 27, so that a continuous filter strand is formed, the hot-melt adhesive applied by the glue application nozzle 39 is bonded for the seam gluing within an adhesive chamber 46, which is designed for this purpose as a cooling device 47.
• the filter strand sealed and sealed in this way then reaches a cutting device 48, in which combination filter rods 49, preferably of multiple use length, are cut off, each containing filter elements of different types of filter rods 6 and 7.
• a compressible and / or elastic material is used as the wrapping strip. If an only elastic material is used, which is intended to be wrapped with a corresponding pressure or under a corresponding tension around the filter segments or to envelop them under a corresponding tension corresponding differences in the diameters of the filter segments are compensated for, so that the cavities formed there are filled. However, if the material is only elastic, this leads to the fact that the multisegment filter ultimately created is also designed differently from the outside diameter. When using a compressible UmhuUungsmaterial s there is the further advantage that the outer diameter of the resulting multi-segment filter can be correspondingly uniform.
• the wrapping material is not compressible, but only elastic, there is the advantage that the processing method can be made relatively uncomplicated, since no great effort has to be made not to inadvertently compress the wrapping material before the wrapping. In the case of an exclusively compressible material, precautions must be taken to treat the wrapping material as gently as possible.
• the device for producing the multi-segment filter which was described above, can also be supplemented by a further unit, which between the
• Cutting device 48 is arranged and by means of which a further wrapping strip wraps the already closed and sealed filter strand.
• FIG. 2 shows a schematic cross section through a multi-segment filter 70 which is made and consists of three different filter segments 60-62 and has a first wrapping material 65 and a second wrapping material 66.
• the first wrapping material 65 is a compressible wrapping material and the second wrapping material 66 is paper.
• the part A is shown which in Fig. 3 is shown as an enlarged detail.
• the diameter differences of the filter segment 61 and the filter segment 60 are shown in more detail and the compensation of these diameter differences by the compressible wrapping material 65.
• the first wrapping material 65 is an air-laid fleece, which is made according to a method according to EP 0 032 044 Bl was manufactured.
• a closed-cell foam such as a foam from a conventional hot melt, can also be used as the encapsulation material 65.
• other compressible and / or elastic materials can also be used, which are preferably smoke-impermeable or essentially smoke-impermeable.
• the first UmhuUungsmaterial is not smoke-tight, it is only very difficult to smoke and allows only very heavy smoke through compared to the actual filter material of the Fil ersegmente.

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• Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7704381

Family Applications (1)

Country Status (7)

Cited By (7)

Families Citing this family (10)

Citations (8)

Family Cites Families (9)

• 2001
  • 2001-11-05 DE DE10153821A patent/DE10153821A1/de not_active Withdrawn
• 2002
  • 2002-10-23 EP EP02785284A patent/EP1441605A1/de not_active Withdrawn
  • 2002-10-23 WO PCT/EP2002/011823 patent/WO2003039276A1/de active Application Filing
  • 2002-10-23 CN CNB028221427A patent/CN100369565C/zh not_active Expired - Fee Related
  • 2002-10-23 PL PL02368349A patent/PL368349A1/pl not_active Application Discontinuation
  • 2002-10-23 US US10/493,317 patent/US20040250824A1/en not_active Abandoned
  • 2002-10-23 JP JP2003541381A patent/JP2005507265A/ja not_active Withdrawn

Patent Citations (8)

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