GB2119224A - Wrapped cigarette filter - Google Patents
Wrapped cigarette filter Download PDFInfo
- Publication number
- GB2119224A GB2119224A GB08311030A GB8311030A GB2119224A GB 2119224 A GB2119224 A GB 2119224A GB 08311030 A GB08311030 A GB 08311030A GB 8311030 A GB8311030 A GB 8311030A GB 2119224 A GB2119224 A GB 2119224A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- fibres
- plasticiser
- wrapper
- tipping assembly
- 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.)
- Withdrawn
Links
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
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/56—Making tipping materials, e.g. sheet cork for mouthpieces of cigars or cigarettes, by mechanical means
-
- 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
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
- A24D3/0212—Applying additives to filter materials
-
- 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
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
- D21H5/14—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of cellulose fibres only
- D21H5/16—Tobacco or cigarette paper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Description
1
GB2119 224A
1
SPECIFICATION
Tipping assembly for an elongate smoking article, and method for making the same
5 This invention relates to a tipping assembly for an elongate smoking article. In particular, it relates to a wrapped filter plug suitable for attachment to a cigarette or similar smoking article, and to a method of making such a wrapped filter plug.
Filter plug wrapping paper is commonly attached to a filter plug by means of an adhesive such as polyvinyl acetate emulsion between the wrapping paper and the plug to avoid the plug 10 becoming detached when suction is applied by the smoker.
Low tar yields in cigarettes are usually achieved by providing high levels of filter ventilation, usually in excess of 60%. One way of doing this is to use highly permeable plug wrapping paper enclosing the fibrous web of filter material. A disadvantage of this is that when such wrapping paper is used on conventional filter making machines the adhesive may bleed through 15 the pores or perforations in the wrapping paper and contaminate the machine, thus reducing running efficiency. This bleed through may also result in unpredictable variations in the overall level of ventilation obtained for a given combination of plugwrap and plug, which in turn would render unreliable the achievement of low tar yields.
It is an object of the present invention to overcome the above disadvantage.
20 According to a first aspect of the present invention there is provided a tipping assembly for an elongate smoking article comprising,
(a) a filter plug containing a plasticiser and a proportion of fibres bonded by the plasticiser, and
(b) a permeable plug wrapper containing a proportion of fibres bondable by the plasticiser, the plasticiser-bonded fibres of the plug being in contact with the plasticiser-bondable fibres of
25 the plug wrapper whereby adherence of the plug wrapper to the plug is provided by the plasticiser in the plug.
According to a second aspect of the invention there is provided a method of making a tipping assembly for an elongate smoking article, the method comprising,
(a) providing a plasticiser,
30 (b) providing a permeable plug wrapper containing a proportion of fibres bondable by the plasticiser,
(c) providing a filter plug containing a proportion of fibres bondable by the plasticiser,
(d) applying the plasticiser to the fibres of the plug so that fibres at least on the surface of the plug are bonded by the plasticiser, and
35 (e) applying the plug wrapper to the plug so that the bondable fibres of the plug wrapper are bonded to the fibres of the plug by the plasticiser.
The bonded fibres of the plug and the bondable fibres of the plug wrapper are preferably of identical composition.
The plug wrapper is preferably a multi-phase web including the bondable fibres as one phase, 40 and is preferably a two-phase web.
The bonded fibres and the bondable fibres are preferably composed of cellulose acetate, and the plasticiser is preferably triacetin (glycerol triacetate).
A or the second phase of the plug wrapper is preferably cellulosic fibre.
In the plug wrapper the cellulosic fibres and the cellulose acetate component are preferably 45 discrete phases, the cellulose acetate phase being adjacent the surface of the plug.
The plasticiser may be applied to the filter plug by spraying during filter manufacture.
It is found with the invention that the wrapping paper effectively adheres to the plug by virtue of the plasticiser used for bonding the cellulose acetate fibres of the plug bonding with the cellulose acetate component of the plug wrapper, and consequently there is no necessity for 50 additional adhesion between plug and plug wrap.
The invention will now be described by way of example only with reference to the accompanying drawing and the examples.
The drawing, Fig. 1, which is not to scale, shows a longitudinal cross-section through a portion of a wrapped filter plug 10 according to the invention.
55 The wrapped filter plug 10 comprises a plug 1 2 of cellulose acetate fibres that has been sprayed with triacetin (glycerol triacetate) which bonds together the cellulose acetate fibres. The plug 12 is wrapped in a highly porous plug wrapper 14 comprising a fibrous sheet made of two components, which are, an outer layer 1 6 (relative to the plug 1 2) of cellulosic fibre, and an inner layer 18 of cellulose acetate fibres. The wrapper 14 adheres to the plug 12 by virtue of 60 the triacetin which enables the cellulose acetate fibres of the plug to bond to the cellulose acetate fibres of the inner layer 18 of the wrapper.
It is believed that the triacetin, when sprayed onto the fibres, adheres to the surfaces of the fibres, does not exist to any substantial extent in a flowable liquid form between the fibres, and hence has no tendency to block pores or perforations in the plug wrapper.
65 With reference to the drawing it will be understood that it is not practicable to show the
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2
GB2119 224A
2
plasticiser, for the reason indicated in the foregoing paragraph. Further, the layers 16, 18 of the plug wrapper will be understood to be highly porous (e.g. above 100 K Filtrona units). Again, this cannot easily be shown in the drawing.
In an alternative embodiment, not illustrated, the wrapper comprises a single phase mixture of 5 cellulose fibres and cellulose acetate fibres, as will be described.
Example 1
A single phase wrapper sheet containing 30% by weight cellulose acetate in a blend of Abaca Hemp and softwood pulps was prepared. Non-wrapped acetate filter rods were sprayed with 10 triacetin to plasticise the surface material. Strips of the single phase wrapper sheet were manually wrapped around the sprayed filter rods at various time intervals after spraying. The wrapped rods were then examined for any evidence of adhesion between plug wrap and filter rod. The results were as follows:
15 TABLE 1
Time Observations
2
minutes
No observed adhesion
30
minutes
Surface of filter rod slightly tacky. Some adhesion of sheet material
60
minutes
Surface of filter rod slightly tacky. Some adhesion of sheet material
120
minutes
Surface of filter rod sticky. Evidence of contraction and collapse of filter rod. Adhesion of sheet material.
Heating and compression were found to accelerate the plasticising effect and hence the 30 adhesion.
Example 3
As for Example 1 except that, instead of non-wrapped acetate filter rods, conventionally formed filter rods (with existing plug wrap removed) were sprayed with triacetin. The remainder of the 35 procedure of Example 1 was carried out. The results were similar to those of Example 1 except that the adhesion appeared to be stronger.
Example 3
Samples of dual phase bobbins of plug wrapping paper containing 70% by weight cellulose 40 acetate fibres were prepared according to the following values of weight and porosity:
TABLE 2
Sample
Weight
Porosity (Filtrona units)
A
22 gsm
650 K
B
28 gsm
600 K
C
22 gsm
300 K
D
22 gsm
300 K
Sample D contained no binder in the plug wrap.
Cellulose acetate filter rods were produced containing 6, 8, 10, 13% by weight (wet tow) triacetin respectively, to a specification similar to that of a conventional leading king-size 55 cigarette. The samples of dual phase plug wrapping paper were applied to the filter rods. The degree of adhesion was assessed by slitting the rods and subjectively assessing the relative degree of adhesion when pulling the plugwrap off the filter plug. The rating is given on a subjective scale of 0-10, a rating of 10 denoting a definite tearing of fibres on pulling the plugwrap from the filter (i.e. a strong bond), and a rating of 5 denoting a definite adhesion but 60 without tearing of fibres (i.e. a weak bond). The ratings for samples A-D are given in Table 3.
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GB2119224A
3
TABLE 3
Plasticiser Level (% wet tow)
Sample
6
8
10
13
A
5
5
7
9
B
7
8
10
10
C
7
8
8
10
D
6
7
8
9
Example 4
A two phase wrapper sheet consisting of a web formed from long fibre cellulose derived from 1 5 hemp, with cellulose acetate fibre deposited on top, was produced on an inclined wire paper making machine (known in the art) modified to allow the use of a dual headbox system. A laboratory trial with two phase based sheets containing at least 30% by weight cellulose acetate fibre indicated that the papers bonded satisfactorily to cellulose acetate filter rods sprayed with triacetin, the cellulose acetate phase of the paper being in contact with the filter. 20 The invention is found not to cause blockage of perforations in the plug wrap and therefore provides for excellent adhesion of the plug wrap to the filter plug in combination with reliable ventilation of the cigarette. Further, there is no bleed through of adhesive which could otherwise cause contamination and stoppage of filter and cigarette making machinery.
Plasticisers other than triacetin, such as triethylene glycol diacetate, and fibres bondable by 25 the plasticiser, other than cellulose acetate, may be utilised in alternative embodiments within the scope of the invention. The bondable fibres of the plug and the bondable fibres of the plug wrapper need not necessarily be of the same composition.
The cellulose fibre of the plug wrapper may be derived from a variety of sources, such as wood, hemp, flax, or bagasse.
30
Claims (17)
1. A tipping assembly for an elongate smoking article comprising,
(a) a filter plug containing a plasticiser and a proportion of fibres bonded by the plasticiser, and
(b) a permeable plug wrapper containing a proportion of fibres bondable by the plasticiser,
35 the plasticiser-bonded fibres of the plug being in contact with the plasticiser-bondable fibres of the plug wrapper whereby adherence of the plug wrapper to the plug is provided by the plasticiser in the plug.
2. A tipping assembly as claimed in claim 1 wherein the bonded fibres of the plug and the bondable fibres of the plug wrapper are of identical composition.
40
3. A tipping assembly as claimed in claim 1 wherein the plug wrapper is a multi-phase web including the bondable fibres as one phase.
4. A tipping assembly as claimed in claim 3 wherein the plug wrapper is a two-phase web.
5. A tipping assembly as claimed in claim 2 wherein the bonded fibres and the bondable fibres are composed of cellulose acetate.
45
6. A tipping assembly as claimed in claim 5 wherein the plasticiser is glycerol triacetate.
7. A tipping assembly as claimed in claim 3 or 4 wherein a or the second phase of the plug wrapper is cellulosic fibre.
8. A tipping assembly as claimed in claim 4 wherein the two phases of the plug wrapper are respectively cellulosic fibres and cellulose acetate fibres, the cellulose acetate phase being
50 adjacent the surface of the plug.
9. A tipping assembly as claimed in claim 1 wherein the permeability of the plug wrapper is at least 100 K Filtrona units.
10. A tipping assembly as claimed in claim 9 wherein the permeability of the plug wrapper is in the range 100-650 K Filtrona units.
55
11. A tipping assembly as claimed in claim 5 or 8 wherein the plug wrapper contains at least 30% by weight cellulose acetate.
12. A tipping assembly as claimed in claim 11, having a dual phase plug wrapper, wherein the plug wrapper contains about 70% by weight cellulose acetate.
13. A tipping assembly as claimed in claim 6 wherein the glycerol triacetate content is in 60 the range 6-13% by weight.
14. A method of making a tipping assembly for an elongate smoking article, the method comprising,
(a) providing a plasticiser,
(b) providing a permeable plug wrapper containing a proportion of fibres bondable by the 65 plasticiser,
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GB 2 119 224A
4
(c) providing a filter plug containing a proportion of fibres bondable by the plasticiser.
(d) applying the plasticiser to the fibres of the plug so that fibres at least on the surface of the plug are bonded by the plasticiser, and
(e) applying the plug wrapper to the plug so that the bondable fibres of the plug wrapper are
5 bonded to the fibres of the plug by the plasticiser. 5
15. A method as claimed in claim 14 wherein the plasticiser is applied to the plug during filter manufacture by spraying.
16. A tipping assembly for an elongate smoking article substantially as hereinbefore described with reference to the drawing and the examples.
10
17. A method of making a tipping assembly for an elongate smoking article, substantially as 10 hereinbefore described with reference to the drawing and the examples.
Printed for Her Majesty's Stationery Office by Burgess & Son (Abingdon) Ltd.—1983.
Published at The Patent Office, 25 Southampton Buildings, London, WC2A 1AY. from which copies may be obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8212017 | 1982-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8311030D0 GB8311030D0 (en) | 1983-05-25 |
| GB2119224A true GB2119224A (en) | 1983-11-16 |
Family
ID=10529952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08311030A Withdrawn GB2119224A (en) | 1982-04-26 | 1983-04-22 | Wrapped cigarette filter |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0092996A1 (en) |
| GB (1) | GB2119224A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4247606A1 (en) * | 2020-11-20 | 2023-09-27 | Celanese International Corporation | Cellulose ester composition and articles made therefrom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1110785A (en) * | 1964-08-27 | 1968-04-24 | Courtaulds Ltd | Filter elements |
| GB1211481A (en) * | 1968-03-30 | 1970-11-04 | Cigarette Components Ltd | Method of manufacturing multiple cigarette filters |
| EP0016333A2 (en) * | 1979-02-17 | 1980-10-01 | Martin Brinkmann Aktiengesellschaft | Process for the manufacture of a filter rod out of which individual cigarette filters are produced |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3079930A (en) * | 1958-09-22 | 1963-03-05 | Eastman Kodak Co | Process and apparatus for manufacturing filters |
| US3205107A (en) * | 1959-07-02 | 1965-09-07 | Eastman Kodak Co | Process for making filament tobacco smoke filters |
| FR2412272A1 (en) * | 1977-12-23 | 1979-07-20 | Job Ets Bardou Job Pauilhac | PROCESS FOR THE REALIZATION OF CIGARETTE FILTERS AND FILTERS THUS OBTAINED |
-
1983
- 1983-04-22 EP EP83302308A patent/EP0092996A1/en not_active Withdrawn
- 1983-04-22 GB GB08311030A patent/GB2119224A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1110785A (en) * | 1964-08-27 | 1968-04-24 | Courtaulds Ltd | Filter elements |
| GB1211481A (en) * | 1968-03-30 | 1970-11-04 | Cigarette Components Ltd | Method of manufacturing multiple cigarette filters |
| EP0016333A2 (en) * | 1979-02-17 | 1980-10-01 | Martin Brinkmann Aktiengesellschaft | Process for the manufacture of a filter rod out of which individual cigarette filters are produced |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8311030D0 (en) | 1983-05-25 |
| EP0092996A1 (en) | 1983-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |