EP0881890B1 - Cigarette filter - Google Patents

Cigarette filter Download PDF

Info

Publication number
EP0881890B1
EP0881890B1 EP97904435A EP97904435A EP0881890B1 EP 0881890 B1 EP0881890 B1 EP 0881890B1 EP 97904435 A EP97904435 A EP 97904435A EP 97904435 A EP97904435 A EP 97904435A EP 0881890 B1 EP0881890 B1 EP 0881890B1
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.)
Expired - Lifetime
Application number
EP97904435A
Other languages
German (de)
French (fr)
Other versions
EP0881890A1 (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
Reemtsma Cigarettenfabriken GmbH
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 Reemtsma Cigarettenfabriken GmbH, HF and PhF Reemtsma GmbH and Co filed Critical Reemtsma Cigarettenfabriken GmbH
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 claim 1 and a method according to Claim 17.
  • cigarette filters are becoming increasingly popular Cellulose filter used. Especially for the construction of Paper likes to be light and ultra-light cigarettes because of the very good retention properties. A great disadvantage but consists in the change of taste through a paper filter compared to a commonly used cellulose acetate filter. Paper filters are therefore not suitable as monofilters but only as a so-called Double, dual or multiple filters in Connection with other filter material. The production of multiple filters however, is extremely complicated and very expensive.
  • US-A-3,900,037 discloses a filter material in which a Carrier layer made of nonwoven material ("tissue paper") a cellulose acetate coating is applied.
  • the so made Filter material is processed into filter rods and on the Cut the usual cigarette filter lengths.
  • the filter material looks so that on the carrier layer, one Tangled fiber fleece, cellulose acetate as more or less homogeneous, dense layer resembles a layer of paint.
  • cellulose acetate is thus applied to a paper web in the melt-blown process.
  • This material manufactured as a monofilter, surprisingly shows the same retention and taste properties as conventional multiple filters with the same total retention.
  • the production of this novel filter material can in the melt-blown process by using smooth or pre-creped paper webs, which are multilayer, preferably single-layer, in a weight range of 8 to 50 g / m 2 , preferably 15 to 30 g / m 2 take place 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 plasticized with triacetin, the triacetin softening the wall of the cellulose acetate fibers so that they stick together at their crossing or contact points.
  • This binder can be a hot melt adhesive or e.g. a modified extrudable and meltable starch. Latter is particularly recommended from an ecological point of view. In each Case must be ensured that the processing temperature of the binder, the nature of the subsequently applied Cellulose fibers are not affected.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (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

Die Erfindung betrifft einen Cigarettenfilter gemäß dem Patentanspruch 1 und ein Verfahren gemäß dem Patentanspruch 17.The invention relates to a cigarette filter according to claim 1 and a method according to 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 Papierfilter gegenüber einem üblicherweise verwendeten Celluloseacetatfilter. Als Monofilter sind Papierfilter daher nicht geeignet, sondern nur als sg. Doppel-, Dual- oder Mehrfachfilter in Verbindung mit anderem Filtermaterial. Die Herstellung von Mehrfachfiltern ist jedoch äußerst kompliziert und sehr kostenintensiv.For conceptual reasons, cigarette filters are becoming increasingly popular Cellulose filter used. Especially for the construction of Paper likes to be light and ultra-light cigarettes because of the very good retention properties. A great disadvantage but consists in the change of taste through a paper filter compared to a commonly used cellulose acetate filter. Paper filters are therefore not suitable as monofilters but only as a so-called Double, dual or multiple filters in Connection with other filter material. The production of multiple filters however, is extremely complicated and very expensive.

Die US-A-3,900,037 offenbart ein Filtermaterial, bei dem auf eine Trägerschicht aus Vliesmaterial ("tissue paper") eine Celluloseacetat-Beschichtung aufgebracht wird. Das so hergestellte Filtermaterial wird zu Filterstangen verarbeitet und auf die übliche Cigarettenfilterlängen geschnitten. Das Filtermaterial sieht damit so aus, daß sich auf der Trägerschicht, einem Wirrfaservlies, Celluloseacetat als mehr oder weniger homogene, dichte Schicht ähnlich wie eine Farbschicht befindet.US-A-3,900,037 discloses a filter material in which a Carrier layer made of nonwoven material ("tissue paper") a cellulose acetate coating is applied. The so made Filter material is processed into filter rods and on the Cut the usual cigarette filter lengths. The filter material looks so that on the carrier layer, one Tangled fiber fleece, cellulose acetate as more or less homogeneous, dense layer resembles a layer of paint.

Es ist Aufgabe der Erfindung, ein Filtermaterial und ein Verfahren zur Herstellung eines Filtermaterials für einen Cigarettenfilter 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 the production of a filter material for a cigarette filter to create the benefits of cellulose acetate and United paper.

Zur Lösung dieser Aufgaben dienen die Merkmale der Patentansprüche 1 bzw. 17. The features of the claims serve to solve these tasks 1 or 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/m2, vorzugsweise 15 bis 30 g/m2 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 Kreuzungsoder Kontaktstellen miteinander verkleben.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, manufactured as a monofilter, surprisingly shows the same retention and taste properties as conventional multiple filters with the same total retention. The production of this novel filter material can in the melt-blown process by using smooth or pre-creped paper webs, which are multilayer, preferably single-layer, in a weight range of 8 to 50 g / m 2 , preferably 15 to 30 g / m 2 take place 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 plasticized with triacetin, the triacetin softening the wall of the cellulose acetate fibers so that they stick together at their crossing or contact points.

In Abhängigkeit der Mengenverhältnisse von Papier zu Celluloseacetat 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 aufgebrachten 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. Latter is particularly recommended from an ecological point of view. In each Case must be ensured that the processing temperature of the binder, the nature of the subsequently applied Cellulose fibers are not affected.

Claims (19)

  1. Filter material for the production of cigarette filters, in which melted, plasticised cellulose acetate is applied in the melt-blown process to a web of pre-fabricated filter paper.
  2. Filter material according to Claim 1,
    characterised in that the cellulose acetate is applied by using an additional binder.
  3. A filter material according to Claim 1,
    characterised in that the filter paper is single-layered or multi-layered.
  4. A filter material according to one of Claims 1 to 3,
    characterised in that the filter paper has a grammage of 8 to 50 g/m2.
  5. A filter material according to one of Claims 1 to 4,
    characterised in that the grammage per filter paper web lies between 15 and 30 g/m2.
  6. A filter material according to one of Claims 1 to 5,
    characterised in that the filter paper is smooth.
  7. A filter material according to one of Claims 1 to 5,
    characterised in that the filter paper is pre-crêped.
  8. A filter material according to one of Claims 1 to 7,
    characterised in that the filter paper contains surface-rich materials such as activated carbon, meerschaum, etc.
  9. A filter material according to one of Claims 1 to 8,
    characterised in that the filter paper contains surface-rich materials which are supplied with aroma- or taste-controlling additives.
  10. A filter material according to Claim 9,
    characterised in that the additives are vitamins.
  11. A filter material according to Claim 1,
    characterised in that the blown cellulose acetate has a degree of acetylation of 1.2 to 2.8.
  12. A filter material according to Claim 1,
    characterised in that the degree of acetylation lies in the range from 1.5 to 2.5.
  13. A filter material according to one of Claims 1 to 12,
    characterised in that the cellulose acetate is free from titanium dioxide.
  14. A filter material according to one of Claims 1 to 13,
    characterised in that the cellulose acetate has been mixed with triacetin or other softening agents.
  15. A filter material according to Claim 14,
    characterised in that the cellulose acetate comprises up to 20 % plasticiser.
  16. A filter material according to one of Claims 1 to 15,
    characterised in that the cellulose acetate is applied to the filter paper in a filament thickness of 0.1 to 2 denier.
  17. A method for the production of filter material for cigarette filters, in which melted, softened cellulose acetate is applied in the melt-blown process to a prefabricated web of paper which is suitable for cigarette filters.
  18. A method according to Claim 17,
    characterised in that the application of cellulose acetate to the paper takes place using a binder.
  19. A method according to Claim 18,
    characterised in that the cellulose acetate is applied to the paper in a filament 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
DE19605863A DE19605863A1 (en) 1996-02-16 1996-02-16 Cigarette filter
DE19605863 1996-02-16
PCT/EP1997/000671 WO1997029655A1 (en) 1996-02-16 1997-02-13 Cigarette filter

Publications (2)

Publication Number Publication Date
EP0881890A1 EP0881890A1 (en) 1998-12-09
EP0881890B1 true 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
ES2539590T3 (en) * 2010-03-25 2015-07-02 Japan Tobacco, Inc. Filter for cigarette and a cigarette with a capsule filter that uses the 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
ES2686045T3 (en) * 2011-12-30 2018-10-16 Philip Morris Products S.A. Apparatus and method for supplying a continuous web of curly 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

Also Published As

Publication number Publication date
ATE226400T1 (en) 2002-11-15
TW321595B (en) 1997-12-01
HUP9901638A3 (en) 2000-02-28
ES2183134T3 (en) 2003-03-16
AU1724997A (en) 1997-09-02
DE59708560D1 (en) 2002-11-28
SK104198A3 (en) 1999-07-12
JP2000505292A (en) 2000-05-09
EP0881890A1 (en) 1998-12-09
PT881890E (en) 2003-02-28
DE19605863A1 (en) 1997-08-21
PL183718B1 (en) 2002-07-31
CZ255198A3 (en) 1999-11-17
CN1215977A (en) 1999-05-05
PL328341A1 (en) 1999-01-18
UA45443C2 (en) 2002-04-15
HK1018733A1 (en) 2000-01-07
CN1142727C (en) 2004-03-24
SK284831B6 (en) 2005-12-01
HUP9901638A2 (en) 1999-08-30
RU2222242C2 (en) 2004-01-27
WO1997029655A1 (en) 1997-08-21
CZ297733B6 (en) 2007-03-14

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