EP1567025B1 - Filterelement - Google Patents

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Publication number
EP1567025B1
EP1567025B1 EP03775194A EP03775194A EP1567025B1 EP 1567025 B1 EP1567025 B1 EP 1567025B1 EP 03775194 A EP03775194 A EP 03775194A EP 03775194 A EP03775194 A EP 03775194A EP 1567025 B1 EP1567025 B1 EP 1567025B1
Authority
EP
European Patent Office
Prior art keywords
filter
starch
filter element
filtering material
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03775194A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1567025A2 (de
Inventor
Harald Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BioTec Biologische Naturverpackungen GmbH and Co KG
Original Assignee
BioTec Biologische Naturverpackungen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BioTec Biologische Naturverpackungen GmbH and Co KG filed Critical BioTec Biologische Naturverpackungen GmbH and Co KG
Publication of EP1567025A2 publication Critical patent/EP1567025A2/de
Application granted granted Critical
Publication of EP1567025B1 publication Critical patent/EP1567025B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/066—Use of materials for tobacco smoke filters characterised by structural features in the form of foam or having cellular 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/163—Carbon

Definitions

  • the invention relates to a filter element with a biodegradable filter material mainly from renewable raw materials for use in particular as a cylindrical tobacco smoke filter of cigarettes, cigars or pipes and a method for its production.
  • Cigarettes have a cylindrical shape in which the smokable tobacco material in shredded form is surrounded by a sheath of paper. Predominantly, these cigarettes have at one end a filter which is connected to the cigarette by a banderole. Filter elements and cigarette filters are extensively described in the literature as filter tow.
  • Filter elements and cigarette filters are extensively described in the literature as filter tow.
  • a fiber material made of the materials cellulose-acetate or polypropylene is usually used.
  • activated carbon is also known. According to known methods, cellulose acetate fiber material is produced essentially by the jet spinning method.
  • the filter tows are first prepared as filter rods by stretching the crimped ribbon, increasing in volume, and scaling to the desired dimension in a formulator and wrapped in paper.
  • the cellulose-2,5-acetate raw materials are usually compounded with glycerol acetate as a plasticizer, which is not easily contained in tobacco smoke.
  • EP 0 658 320 B1 The state of the art is further referred to EP 0 658 320 B1, EP 0 636 324 B1 and DE 33 11903 A1.
  • the object of the invention is to provide a filter tow or filter material for the production of filters for smokers, in which health risks resulting from the release of filter constituents and the external contamination of cigarettes with filter constituents are avoided or at least reduced.
  • the invention is based on the basic concept of producing a filter element made of a starch material and / or a polymer mixture based on starch and optionally activated carbon, pores and / or filter channels being provided in the filter element.
  • the filter element may contain a filter material made of starch foam, starch polymer fibers or biopolymer films and optionally stored activated carbon layers.
  • Such filter materials optionally adherent or Filter particles released during smoking can be dissolved in an environment with appropriate moisture content. They are not considered for the health-damaging effects discussed at the outset.
  • the activated carbon may be in the form of powder or granules and be present in various ways in the filter material of starch and / or a starch-based polymer mixture.
  • the starch may, for example, be foamed and form a carrier material for the activated carbon.
  • the activated carbon can be sprayed on a foamed filter material made of starch material or incorporated as an intermediate layer.
  • the starch material may be formed flat (eg as a foamed plate) or foamed into an endless round filter rod and cut into correspondingly shaped sections.
  • natural fibers such as cellulose fibers, hemp or cotton fibers may be incorporated in an amount of about 5% by volume.
  • an activated carbon layer is applied to cut starch foam sections, sprayed, for example as a powder, or placed in another way between starch foam sections or arranged thereon.
  • the layers of starch foam and activated carbon thus joined and bonded together are wrapped in a film or other suitable cover.
  • the round filter rod then has a stack, i. alternately arranged transversely to the gas flow disks or layers of starch foam and activated carbon.
  • filter channels can be introduced to z. B. to be able to influence the passage of the aromatragenden molecules of tobacco.
  • These filter channels can be formed for example by needles, water jets or laser at any time during the manufacture of the filter elements.
  • the arrangement and thickness of the layers of the Filter element is irrelevant. So z. B. starch foam sections stored and later, the intended use, if appropriate, combined with intermediate layers of activated carbon to filter elements and wrapped with foil.
  • the filter channels may extend or be oriented approximately in the direction of the gas flow, but deviations are possible.
  • the filter channels may also extend partially transverse to the direction of the tobacco gas stream.
  • filter elements designed as round filter rods can be wrapped with a corresponding air-permeable and / or perforated paper band or the filter channels are introduced into the finished filter rod wrapped in a band.
  • the filter channels may have a size or width of preferably 50 to 100 .mu.m, and extending into this up to a certain depth, for example, starting from one or both ends of the filter element or round filter rod.
  • the filter channels may also be oriented longitudinally and extend through the entire round filter rod. Due to the shape, size, number and arrangement of the filter channels, the filter effect can be influenced.
  • the activated carbon may be formed as granules.
  • the cohesion of the individual layers of the filter element may be substantially determined by the wrapping material, e.g. a shrink wrap, be guaranteed.
  • a filter element By incorporating activated carbon into a filter material or between layers of a starch-based filter material and / or a starch-based polymer mixture, a filter element is created in which the advantages of both materials are combined.
  • about 5% by volume of natural fibers may be similar to a wick in the filter element, or incorporated therein, and develop a wicking effect, thereby fostering additional filtering out of harmful components from the tobacco smoke.
  • Starch foam itself does not emit inhalable, volatile products and can adsorb the optionally released charcoal particles described above.
  • starch foam particles or starch fiber particles are harmless to health, since they are biodegradable.
  • the starch particles or fibers absorb or bind the moisture.
  • the parameters of the starch materials used can be adjusted during their preparation so that the moisture content of respiratory air in the lungs is sufficient to bind or release any starch particles or starch fibers, to which possibly activated carbon particles and toxins adhere, and to solve during exhalation To transport starch particles and fibers together with the breathing air back out of the lungs. Thus, accumulation in the lung upon inhalation of tobacco smoke can be prevented.
  • starch materials with thermoplastic properties are used for the production of a filter element, which allow processing after adjustment of the operating conditions, for example in the melt-blown process or spin-flow process.
  • Methods which are applicable to the present invention are explained in detail, for example, in EP 861 036.
  • high-precision fibers can be discharged as endless filaments by means of extrusion equipment and special nozzles, swirled through air and either drawn (to increase the strength) and then crimped (spin-flow method) or not drawn to form a to achieve a soft, fluffy structure with a large surface area (melt-blown process).
  • the extruded fibers are first spun and made into a Bundled fiber bundles and formed after drawing by compression rollers to form an endless filter.
  • a final shaping takes place in a configuration system, wherein the endless filter is optionally fed again to an upsetting, crimping machine and processed in a filter rod machine to form individual filter sections.
  • starch foam 20 from a starting mixture 2 of starch, preferably native potato starch, and plasticizing and film-forming additives by thermal and mechanical energy input compressed, optionally modified, plasticized and expanded by temperature and pressure drop and in compressed a compression step, wherein it is processed in a calender 22 to an endless filter 7.
  • a foamed round profile with a diameter of 10 mm is produced and calibrated in the formatting process to a diameter of 7.8 mm.
  • the specific density of the foam filter strand is z. B. about 12 kg / m 3 .
  • the extruded starch foam 20 is substantially open-pored so that the frothed destructured starch filter material having a crystalline content of less than 5% is capable of adsorbing the liquids and liquid contaminants contained in the tobacco smoke such as condensate and tar products Starch foam itself emits no inhalable, volatile products in the tobacco smoke.
  • the endless filter is cut into filter sections and into a filter element or cigarette filter with a stacked structure of starch-based filter sections optionally in alternation with activated carbon layers (as in US Pat Figure 3 shown) processed.
  • an extrudate is formed with air-permeable configuration, a large area is possible for the air permeability. So can the extrudate in the be formed substantially porous, so that a high air permeability is expected. Likewise, the extrudate can partially closed-pored and the air permeability be correspondingly low.
  • additional filter channels of appropriate number and size can be introduced
  • the filter channels can be introduced by needling, water jets or laser beam in a filter material made of a starch material.
  • a filter material made of a starch material In a layered filter element (round filter rod), the thickness of each filter layer of starch material and possibly activated carbon and the laser depth, which corresponds to the channel length, are matched.
  • a filter material made of a foamed starch material can be open-pored, additionally introduced filter channels can enhance the advantageous properties, such as the adhesion properties, of this filter material.
  • a filter material of starch polymer fibers has improved adhesion properties of the pollutant particles to be filtered in the tobacco smoke.
  • a filter material of a fibrous starch material can be cut into staple fibers, wherein the ends of the short fibers protrude, for example, in additionally introduced into the filter material filter channels and so the filter properties can be further improved.
  • 3 shows a longitudinal section of a cigarette 10 with a filter element 1, as it is produced according to a method shown in Figure 1, wherein a portion containing tobacco 11 and a section containing the filter element 1 are wrapped and connected with cigarette paper 12 and the filter element and the transition region to the tobacco 11 containing portion are wrapped with another band 13 for reinforcement.
  • the filter element 1 is constructed in the form of a stack (cf., FIG. 2), wherein layers of starch foam 20 and layers of activated carbon 21 are arranged alternately.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Glass Compositions (AREA)
  • Networks Using Active Elements (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
EP03775194A 2002-11-13 2003-10-16 Filterelement Expired - Lifetime EP1567025B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10252823A DE10252823A1 (de) 2002-11-13 2002-11-13 Filterelement
DE10252823 2002-11-13
PCT/EP2003/011493 WO2004043174A2 (de) 2002-11-13 2003-10-16 Filterelement

Publications (2)

Publication Number Publication Date
EP1567025A2 EP1567025A2 (de) 2005-08-31
EP1567025B1 true EP1567025B1 (de) 2006-04-12

Family

ID=32308529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03775194A Expired - Lifetime EP1567025B1 (de) 2002-11-13 2003-10-16 Filterelement

Country Status (11)

Country Link
US (1) US7762267B2 (ja)
EP (1) EP1567025B1 (ja)
JP (1) JP4242347B2 (ja)
AT (1) ATE322842T1 (ja)
AU (1) AU2003283273A1 (ja)
CA (1) CA2502426A1 (ja)
DE (2) DE10252823A1 (ja)
DK (1) DK1567025T3 (ja)
ES (1) ES2257697T3 (ja)
PT (1) PT1567025E (ja)
WO (1) WO2004043174A2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8851084B2 (en) 2011-07-19 2014-10-07 British American Tobacco (Investments) Limited Cellulose acetate compositions
US9241512B2 (en) 2011-06-23 2016-01-26 British American Tobacco (Investments) Limited Filter material comprising polylactide fibres

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025858A1 (de) * 2007-06-01 2008-12-04 Grünenthal GmbH Verfahren zur Herstellung einer Arzneimitteldarreichungsform
US9226524B2 (en) 2010-03-26 2016-01-05 Philip Morris Usa Inc. Biopolymer foams as filters for smoking articles
GB201007946D0 (en) * 2010-05-12 2010-06-30 British American Tobacco Co Filter additive
DE102011050769A1 (de) * 2011-05-31 2012-12-06 Sven Pracht Filterelement und Filter für Rauchwaren sowie ein Verfahren zum Herstellen des Filterelementes
CN102511929A (zh) * 2011-11-10 2012-06-27 云南正邦生物技术有限公司 一种通风固形复合嘴棒及其制备方法
CN102613702A (zh) * 2012-03-30 2012-08-01 邓加德 能减少香烟焦油吸入量的滤嘴香烟
PL223115B1 (pl) * 2013-02-15 2016-10-31 Int Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością Sposób, mechanizm i urządzenie do chwilowego kompresowania materiału filtracyjnego
CN203388263U (zh) * 2013-06-26 2014-01-15 刘秋明 电子烟、电子烟雾化器及电子烟吸嘴
CN105011365A (zh) * 2014-04-18 2015-11-04 罗哲浩 一种香烟过滤剂
CN106418679B (zh) * 2016-10-26 2020-06-16 中国烟草总公司郑州烟草研究院 一种设有多孔材料的卷烟
IT201800003381A1 (it) * 2018-03-08 2019-09-08 Hsd Holding Smart Device S R L Un assieme di ventilazione
CN109864335A (zh) * 2019-03-06 2019-06-11 福建绿色黄金生物科技有限公司 过滤棒及香烟
CN113840548A (zh) * 2019-05-17 2021-12-24 日本烟草产业株式会社 香味吸取器用的烟杆
CN110670165B (zh) * 2019-09-29 2022-04-15 孔令孝 一种聚乳酸卷烟丝束、制备方法及其应用

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US9241512B2 (en) 2011-06-23 2016-01-26 British American Tobacco (Investments) Limited Filter material comprising polylactide fibres
US8851084B2 (en) 2011-07-19 2014-10-07 British American Tobacco (Investments) Limited Cellulose acetate compositions

Also Published As

Publication number Publication date
JP4242347B2 (ja) 2009-03-25
ES2257697T3 (es) 2006-08-01
EP1567025A2 (de) 2005-08-31
US20060124145A1 (en) 2006-06-15
CA2502426A1 (en) 2004-05-27
PT1567025E (pt) 2006-08-31
JP2006506061A (ja) 2006-02-23
DE10252823A1 (de) 2004-06-09
AU2003283273A8 (en) 2004-06-03
ATE322842T1 (de) 2006-04-15
WO2004043174A3 (de) 2004-10-14
DK1567025T3 (da) 2006-07-17
DE50302987D1 (de) 2006-05-24
AU2003283273A1 (en) 2004-06-03
WO2004043174A2 (de) 2004-05-27
US7762267B2 (en) 2010-07-27

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