EP0881890A1 - Cigarette filter - Google Patents

Cigarette filter

Info

Publication number
EP0881890A1
EP0881890A1 EP97904435A EP97904435A EP0881890A1 EP 0881890 A1 EP0881890 A1 EP 0881890A1 EP 97904435 A EP97904435 A EP 97904435A EP 97904435 A EP97904435 A EP 97904435A EP 0881890 A1 EP0881890 A1 EP 0881890A1
Authority
EP
European Patent Office
Prior art keywords
filter material
material according
cellulose acetate
filter
paper
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.)
Granted
Application number
EP97904435A
Other languages
German (de)
French (fr)
Other versions
EP0881890B1 (en
Inventor
Edgar Mentzel
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.)
Reemtsma Cigarettenfabriken GmbH
Original Assignee
HF and PhF Reemtsma GmbH and Co
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 HF and PhF Reemtsma GmbH and Co filed Critical HF and PhF Reemtsma GmbH and Co
Priority to SI9730412T priority Critical patent/SI0881890T1/en
Publication of EP0881890A1 publication Critical patent/EP0881890A1/en
Application granted granted Critical
Publication of EP0881890B1 publication Critical patent/EP0881890B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper
    • 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
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/06—Cellulose esters

Definitions

  • the invention relates to: a cigarette filter according to the preamble of patent claim 1 and a method according to the preamble of patent claim 17.
  • Paper filters are increasingly being used for cigarette filters. Paper is often used for the construction of light and ultra-light cigarettes because of its very good retention properties. A major disadvantage, however, is the change in taste caused by a paper filter compared to a cellulose acetate filter commonly used. Paper filters are therefore not suitable as monofilters, but only as so-called. Double, dual or multiple filters in connection with other filter material. However, the production of multiple filters is extremely complicated and very expensive.
  • cellulose acetate is thus applied to a paper web in the melt-blown process.
  • This material produced as a monofilter, surprisingly shows the same retention and taste properties as conventional multiple filters with the same total retention.
  • This novel filter material can be produced in the melt-blown process by using smooth or pre-creped paper webs which are multi-layer, preferably single-layer, in a weight range of 8 to 50 g / m, preferably 15 to 30 g / m, that the inflated, melted cellulose acetate has a degree of acetylation of 1 to 3, preferably 1.7 to 2.6.
  • This cellulose acetate is preferably a cellulose acetate softened with triacetin, the triacetin softening the wall of the cellulose acetate fibers so that they adhere to one another at their crossing or contact points.
  • This binder can be a hot melt adhesive or e.g. a modified extrudable and meltable starch. The latter is particularly recommended from an ecological point of view. In any case, care must be taken to ensure that the processing temperature of the binder does not affect the nature of the cellulose fibers subsequently applied.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

The invention concerns a filter material which is suitable in particular for producing cigarette filters. The material is characterized in that molten softened cellulose acetate is applied by the melt blown technique to a strip of prefabricated filter paper.

Description

Ciσarettenfilter Ciarette filter
Die Erfindung betriff;: einen Cigarettenfilter gemäß Oberbegriff des Patentanspruchs 1 und ein Verfahren gemäß Oberbegriff des Patentanspruchs 17.The invention relates to: a cigarette filter according to the preamble of patent claim 1 and a method according to the preamble of patent claim 17.
Aus konzeptionellen Gründen werden für Cigarettenfilter zunehmend Cellulosefilter eingesetzt. Insbesondere für die Konstruktion für Leicht- und Ultra-Leicht-Cigaretten wird Papier gerne wegen der sehr guten Retentionseigenschaften genommen. Ein großer Nachteil besteht aber in der GeschmacksVeränderung durch einen Papierfil¬ ter gegenüber einemüblicherweiseverwendeten Celluloseacetatfil¬ ter. Als Monofilter sind Papierfilter daher nicht geeignet, sondern nur als sg. Doppel-, Dual- oder Mehrfachfilter in Verbindung mit anderem Filtermaterial. Die Herstellung von Mehr¬ fachfiltern ist jedoch äußerst kompliziert und sehr kosten¬ intensiv.For conceptual reasons, cellulose filters are increasingly being used for cigarette filters. Paper is often used for the construction of light and ultra-light cigarettes because of its very good retention properties. A major disadvantage, however, is the change in taste caused by a paper filter compared to a cellulose acetate filter commonly used. Paper filters are therefore not suitable as monofilters, but only as so-called. Double, dual or multiple filters in connection with other filter material. However, the production of multiple filters is extremely complicated and very expensive.
Es ist Aufgabe der Erfindung, ein Filtermaterial und ein Ver- fahren zur Herstellung eines Filtermaterials für einen Cigaret¬ tenfilter zu schaffen, das die Vorteile von Celluloseacetat und Papier vereint.It is an object of the invention to provide a filter material and a method for producing a filter material for a cigarette filter that combines the advantages of cellulose acetate and paper.
Zur Lösung dieser Aufgaben dienen die Merkmale der Patentansprü- ehe 1 bzw. 17. Gemäß Erfindung wird also auf eine Papierbahn Celluloseacetat im Melt-Blown-Verfahren aufgebracht. Man verbindet hierdurch die guten Retentionseigenschaften der Cellulose mit den selektiven Retentionseigenschaften des Celluloseacetats. Dieses Material, als Monofilter hergestellt, zeigt überraschenderweise die gleichen Retentions- und Geschmackseigenschaften wie herkömmliche Mehrfachfilter gleicher Gesamtretention. Die Herstellung dieses neuartigen Filtermaterials kann in dem Melt-Blown-Prozeß durch Verwendung von glatten oder vorgekreppten Papierbahnen, die mehrlagig, vorzugsweise einlagig, in einem Gewichtsbereich von 8 bis 50 g/m , vorzugsweise 15 bis 30 g/m liegen, dergestalt erfolgen, daß das aufgeblasene, geschmolzene Celluloseacetat einen Acetylierungsgrad von 1 bis 3, vorzugsweise 1,7 bis 2,6 hat. Dieses Celluloseacetat ist vorzugsweise ein mit Triacetin weichgemachtes Celluloseacetat, wobei das Triacetin die Wand der Celluloseacetatfasern erweicht, so daß diese an ihren Kreuzungs¬ oder Kontaktstellen miteinander verkleben.The features of patent claims 1 and 17 serve to solve these tasks. According to the invention, cellulose acetate is thus applied to a paper web in the melt-blown process. This combines the good retention properties of cellulose with the selective retention properties of cellulose acetate. This material, produced as a monofilter, surprisingly shows the same retention and taste properties as conventional multiple filters with the same total retention. This novel filter material can be produced in the melt-blown process by using smooth or pre-creped paper webs which are multi-layer, preferably single-layer, in a weight range of 8 to 50 g / m, preferably 15 to 30 g / m, that the inflated, melted cellulose acetate has a degree of acetylation of 1 to 3, preferably 1.7 to 2.6. This cellulose acetate is preferably a cellulose acetate softened with triacetin, the triacetin softening the wall of the cellulose acetate fibers so that they adhere to one another at their crossing or contact points.
In Abhängigkeit der Mengenverhältnisse von Papier zu Cellulose- acetat kann es vorteilhaft sein, ein Bindemittel einzusetzen. Dieses Bindemittel kann einen Schmelzklebstoff oder z.B. eine modifizierte extrudierbare und schmelzbare Stärke sein. Letztere ist aus ökologischer Sicht besonders empfehlenswert. In jedem Falle muß darauf geachtet werden, daß die Verarbeitungstemperatur des Bindemittels die Beschaffenheit der nachträglich aufgebrach¬ ten Cellulosefasern nicht beeinflußt. Depending on the proportions of paper to cellulose acetate, it may be advantageous to use a binder. This binder can be a hot melt adhesive or e.g. a modified extrudable and meltable starch. The latter is particularly recommended from an ecological point of view. In any case, care must be taken to ensure that the processing temperature of the binder does not affect the nature of the cellulose fibers subsequently applied.

Claims

Patentansprüche claims
1. Filtermaterial für die Herstellung von Cigarettenfiltern, dadurch gekennzeichnet, daß auf eine Bahn aus vorkonfektio¬ niertem Filterpapier geschmolzenes, weichgemachtes Cellulo¬ seacetat im Melt-Blown-Verfahren aufgebracht ist.1. Filter material for the manufacture of cigarette filters, characterized in that molten, plasticized cellulose acetate is applied to a web of pre-finished filter paper in the melt-blown process.
2. Filtermaterial nach Anspruch 1, dadurch gekennzeichnet, daß das Celluloseacetat unter Verwendung eines zusätzlichen Bindemittels aufgebracht ist.2. Filter material according to claim 1, characterized in that the cellulose acetate is applied using an additional binder.
3. Filtermaterial nach Anspruch 1, dadurch gekennzeichnet, daß das Filterpapier ein- oder mehrlagig beschaffen ist.3. Filter material according to claim 1, characterized in that the filter paper is made up of one or more layers.
4. Filtermaterial nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Filterpapier ein Flächengewicht von 8 bis 50 g/m hat.4. Filter material according to one of claims 1 to 3, characterized in that the filter paper has a basis weight of 8 to 50 g / m.
5. Filtermaterial nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Flächengewicht pro Filterpapierbahn zwischen 15 und 30 g/m liegt.5. Filter material according to one of claims 1 to 4, characterized in that the basis weight per filter paper web is between 15 and 30 g / m.
6. Filtermaterial nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Filterpapier glatt ist.6. Filter material according to one of claims 1 to 5, characterized in that the filter paper is smooth.
7. Filtermaterial nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Filterpapier vorgekreppt ist.7. Filter material according to one of claims 1 to 5, characterized in that the filter paper is pre-creped.
8. Filtermaterial nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Filterpapier oberflächenreiche Materialien wie Aktivkohle, Meerschaum usw. enthält.8. Filter material according to one of claims 1 to 7, characterized in that the filter paper contains surface-rich materials such as activated carbon, meerschaum, etc.
9. Filtermaterial nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Filterpapier oberflächenreiche Materialien enthält, die mit Aroma bzw. geschmackssteuernden Additiven beaufschlagt sind.9. Filter material according to one of claims 1 to 8, characterized in that the filter paper has a large surface area Contains materials that are flavored or flavor-controlled additives.
10. Filtermaterial nach Anspruch 9, dadurch gekennzeichnet, daß die Additive Vitamine oder gleichwirkende Stoffe sind.10. Filter material according to claim 9, characterized in that the additives are vitamins or substances having the same effect.
11. Filtermaterial nach Anspruch 1, dadurch gekennzeichnet, daß das aufgeblasene Celluloseacetat einen Acetylierungsgrad von 1,2 bis 2,8 hat.11. Filter material according to claim 1, characterized in that the inflated cellulose acetate has a degree of acetylation of 1.2 to 2.8.
12. Filtermaterial nach Anspruch 1, dadurch gekennzeichnet, daß der Acetylierungsgrad im Bereich von 1,5 bis 2,5 liegt.12. Filter material according to claim 1, characterized in that the degree of acetylation is in the range of 1.5 to 2.5.
13. Filtermaterial nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß das Celluloseacetat frei von Titandioxid ist.13. Filter material according to one of claims 1 to 12, characterized in that the cellulose acetate is free of titanium dioxide.
14. Filtermaterial nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß das Celluloseacetat mit Triacetin oder anderen Weichmachern versetzt worden ist.14. Filter material according to one of claims 1 to 13, characterized in that the cellulose acetate has been mixed with triacetin or other plasticizers.
15. Filtermaterial nach Anspruch 14, dadurch gekennzeichnet, daß das Celluloseacetat bis zu 20% Weichmacher aufweist.15. Filter material according to claim 14, characterized in that the cellulose acetate has up to 20% plasticizer.
16. Filtermaterial nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß das Celluloseacetat in einer Fadenstärke von 0,1 bis 2 Denier auf das Filterpapier aufgebracht ist.16. Filter material according to one of claims 1 to 15, characterized in that the cellulose acetate is applied to the filter paper in a thread thickness of 0.1 to 2 denier.
17. Verfahren zum Herstellen von Filtermaterial für Cigaretten- filter, dadurch gekennzeichnet, daß auf eine vorkonfektio¬ nierte Bahn aus Papier, das für Cigarettenfilter geeignet ist, geschmolzenes, weichgemachtes Celluloseacetat im Melt- Blown-Verfahren aufgebracht wird. 17. A process for producing filter material for cigarette filters, characterized in that molten, plasticized cellulose acetate is applied in a melt-blown process to a pre-confectioned web of paper which is suitable for cigarette filters.
18. Verfahren nach Anspruch 17, dadurch gekennzeichnet, daß das Aufbringen von Celluloseacetat auf das Papier unter Ver¬ wendung eines Bindemittels erfolgt.18. The method according to claim 17, characterized in that the application of cellulose acetate to the paper is carried out using a binder.
19. Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß das Celluloseacetat in einer Fadenstärke von 0,1 bis 2 Denier auf das Papier aufgebracht wird. 19. The method according to claim 18, characterized in that the cellulose acetate is applied to the paper in a thread thickness of 0.1 to 2 denier.
EP97904435A 1996-02-16 1997-02-13 Cigarette filter Expired - Lifetime EP0881890B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730412T SI0881890T1 (en) 1996-02-16 1997-02-13 Cigarette filter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19605863 1996-02-16
DE19605863A DE19605863A1 (en) 1996-02-16 1996-02-16 Cigarette filter
PCT/EP1997/000671 WO1997029655A1 (en) 1996-02-16 1997-02-13 Cigarette filter

Publications (2)

Publication Number Publication Date
EP0881890A1 true EP0881890A1 (en) 1998-12-09
EP0881890B1 EP0881890B1 (en) 2002-10-23

Family

ID=7785642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97904435A Expired - Lifetime EP0881890B1 (en) 1996-02-16 1997-02-13 Cigarette filter

Country Status (17)

Country Link
EP (1) EP0881890B1 (en)
JP (1) JP2000505292A (en)
CN (1) CN1142727C (en)
AT (1) ATE226400T1 (en)
AU (1) AU1724997A (en)
CZ (1) CZ297733B6 (en)
DE (2) DE19605863A1 (en)
ES (1) ES2183134T3 (en)
HK (1) HK1018733A1 (en)
HU (1) HUP9901638A3 (en)
PL (1) PL183718B1 (en)
PT (1) PT881890E (en)
RU (1) RU2222242C2 (en)
SK (1) SK284831B6 (en)
TW (1) TW321595B (en)
UA (1) UA45443C2 (en)
WO (1) WO1997029655A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9155335B2 (en) * 2007-12-17 2015-10-13 Celanese Acetate Llc Degradable cigarette filter
EP2357277A1 (en) * 2010-02-12 2011-08-17 Rhodia Acetow GmbH Photodegradable paper and its use
CA2791260C (en) * 2010-03-25 2014-07-15 Susumu Yokogawa Cigarette filter and a capsule filter cigarette using same
CN101849710B (en) * 2010-04-29 2011-11-09 云南省玉溪市溶剂厂有限公司 Cigarette health-care plasticizer and manufacturing method thereof
GB201007946D0 (en) * 2010-05-12 2010-06-30 British American Tobacco Co Filter additive
US20140364291A1 (en) * 2011-12-30 2014-12-11 Philip Morris Products S.A. Apparatus and method for supplying a continuous web of crimped sheet material
JP6496705B2 (en) * 2016-12-16 2019-04-03 株式会社ダイセル Papermaking sheet and method for producing papermaking sheet
JP7176885B2 (en) * 2018-08-09 2022-11-22 株式会社ダイセル Cellulose acetate composition and molded article

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900037A (en) * 1969-12-24 1975-08-19 Brown & Williamson Tobacco Tobacco-smoke filters
BE788318A (en) * 1972-09-01 1973-01-02 British American Tobacco Co FILTER FOR CIGARETTE, PROCESS FOR MANUFACTURING THIS FILTER AND DEVICE FOR IMPLEMENTING THIS PROCESS.
CA1044615A (en) * 1974-01-30 1978-12-19 Minnesota Mining And Manufacturing Company Low pressure drop filter medium
US4357379A (en) * 1979-03-05 1982-11-02 Eastman Kodak Company Melt blown product
US4714647A (en) * 1986-05-02 1987-12-22 Kimberly-Clark Corporation Melt-blown material with depth fiber size gradient
US5509430A (en) * 1993-12-14 1996-04-23 American Filtrona Corporation Bicomponent fibers and tobacco smoke filters formed therefrom
DE4443158A1 (en) * 1994-12-05 1996-06-13 Gessner & Co Gmbh Cleanable gas filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9729655A1 *

Also Published As

Publication number Publication date
SK104198A3 (en) 1999-07-12
ES2183134T3 (en) 2003-03-16
PL328341A1 (en) 1999-01-18
EP0881890B1 (en) 2002-10-23
CN1142727C (en) 2004-03-24
JP2000505292A (en) 2000-05-09
DE19605863A1 (en) 1997-08-21
HK1018733A1 (en) 2000-01-07
CZ255198A3 (en) 1999-11-17
TW321595B (en) 1997-12-01
PT881890E (en) 2003-02-28
RU2222242C2 (en) 2004-01-27
DE59708560D1 (en) 2002-11-28
HUP9901638A3 (en) 2000-02-28
AU1724997A (en) 1997-09-02
HUP9901638A2 (en) 1999-08-30
CZ297733B6 (en) 2007-03-14
WO1997029655A1 (en) 1997-08-21
SK284831B6 (en) 2005-12-01
PL183718B1 (en) 2002-07-31
CN1215977A (en) 1999-05-05
ATE226400T1 (en) 2002-11-15
UA45443C2 (en) 2002-04-15

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