EP3047739A1 - Transportstrahladapter und Verfahren zur Herstellung von Stangen - Google Patents
Transportstrahladapter und Verfahren zur Herstellung von Stangen Download PDFInfo
- Publication number
- EP3047739A1 EP3047739A1 EP15152109.3A EP15152109A EP3047739A1 EP 3047739 A1 EP3047739 A1 EP 3047739A1 EP 15152109 A EP15152109 A EP 15152109A EP 3047739 A1 EP3047739 A1 EP 3047739A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transport jet
- jet adapter
- transport
- centimetres
- rod
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims description 16
- 239000000109 continuous material Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 51
- 235000019504 cigarettes Nutrition 0.000 claims description 12
- 235000019505 tobacco product Nutrition 0.000 claims description 10
- 229920002301 cellulose acetate Polymers 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 241000208125 Nicotiana Species 0.000 claims description 6
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011143 downstream manufacturing Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000007542 hardness measurement Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
- A24D3/0233—Filter rod forming processes by means of a garniture
Definitions
- the present invention relates to a transport jet adapter and a method for forming rods from continuous material using the adapter.
- the invention further relates to rods comprising continuous material being twisted about its longitudinal axis.
- the invention relates to filter rods obtainable by use of the transport jet adapter and products made from the obtained rods, like filter tips and tobacco products comprising the filter tips.
- Filter rods for use in the tobacco industry are made of filter material, typically cellulose acetate tow, provided in the form of a continuous strand of fibres of the filter material.
- the continuous strand of filter material is subjected to several process steps before being supplied to the garniture of a filter rod maker. Within the filter rod maker, the final product diameter is fixed. These process steps involve for example one or more of: opening of the strand (for example by blooming the cellulose acetate tow), crimping the strand or the application of particulate additives or liquid additives. Where particulate additives or liquid additives are applied, for example the strand of filter material is spread wide in relation to the direction of travel for processing. During subsequent collection or funnelling into the garniture the processed strand is transformed into a rod-shaped product.
- the present invention improves rod making techniques in that a substantially flat continuous material is twisted about its longitudinal axis at a predefined twist rate in order to mitigate or eliminate the variation in circumferential hardness of the rods formed from the continuous material.
- the present invention it is possible to improve the stability of the rods.
- the present invention is particularly useful in the manufacture of filter rods for tobacco products, since downstream processes like cigarette making and filter combining become more efficient, the final product quality improves and the number of rejects is lowered due to the improved stability of the rods.
- the twist rate of the rifled edges corresponds to a twist rate of 1 to 10 twists per meter, preferably 2 to 5 twists per meter and more preferably 3 to 4 twists per meter. Further preferably, the twist rate of the rifled edges corresponds to a twist of between about 90 degrees and about 180 degrees over a distance of 9.5 to 13 cm.
- the transport jet adapter typically has from 2 to 20, preferably from 3 to 16 and more preferably from 4 to 8 rifled edges.
- the peak-to-peak distance between the hills and the valleys defined by the rifled edges preferably between about 1 percent and about 30 percent and more preferably between about 2 percent and about 20 percent of the inner radius of the transport jet adapter.
- the inner radius is defined as the distance from the centre of a cross-section of the passageway of the transport jet adapter to the minimum of the valleys.
- the outer diameter of the transport jet adapter ranges between about 1 centimetre and about 10 centimetres, preferably between about 2 centimetres and about 6 centimetres and is more preferably about 3 centimetres.
- the length of rifled section of the transport jet adapter ranges between about 1 centimetre and about 20 centimetres, preferably between about 4 centimetres and about 12 centimetres and more preferably between about 5 centimetres and about 8 centimetres.
- the transport jet adapter can be designed for convenient insertion into the transport jet or for connection in series to the transport jet. Like this transport jet adapters with different twist rates can be exchanged with ease in order to meet specific requirements of production. Accordingly the transport jet adapter can be provided with fastening means.
- the transport jet adapter can be designed such that the risk of the material from being caught by the rifled edges when entering through the first open end is lowered.
- the rifled edges can be formed such that the rifled edges and consequently the formed profile of peaks and valleys continuously develop from a non-profiled section of the inner wall at the first open end until reaching the desired peak-to-peak distance.
- the adapter may also be integrally formed in the transport jet by forming the desired profile directly on the inner surface of the transport jet.
- the wall of the transport jet adapter constitutes the wall of the portion of a transport jet subsequent to the openings of the air nozzle.
- the transport jet adapter can be formed from various materials. These materials typically include metals, metal alloys, plastics or combinations of metals and metal alloys with plastics like coated metals or metal alloys or metallized plastics. The materials should be formed in a manner that the inner surface of the wall is smooth without burrs in order to prevent the continuous material from being caught.
- the transport jet adapter is particularly applicable in known commercially available transport jets for filter rod makers for the production of filter rods. Therefore, the present invention relates in accordance to a second aspect of the invention to a filter rod maker comprising the transport jet adapter of the first aspect of the present invention described above.
- the filter rod maker is a filter rod maker for tobacco products.
- a material transport path is established for supplying a continuous material.
- materials typically used for forming filter rods in the tobacco industry like cellulose acetate tow are provided as a bale of a continuous strand.
- the method of the present invention may further include the step of opening the continuous material before it is supplied to the transport jet. Due to these steps, the material has a substantially flat shape before it is supplied to the transport jet.
- the continuous material for the purposes of the present invention is not restricted to conventional filter materials and that cellulose acetate tow exemplifies only one specific kind of continuous material suitable for the present invention.
- substantially flat in this context means that the cross-section of the continuous strand of material in cross-machine direction has an aspect ratio of the longest diameter to the shortest diameter of 100:1 to 4:1, preferably from 20:1 to 4:1.
- the optionally opened material is supplied to a transport jet comprising the transport jet adapter according to the first aspect of the invention for twisting the optionally opened material at a predefined twist rate.
- the method further encompasses further steps for finalizing the rods.
- the twisted material is first introduced to the entrance of a garniture of a filter rod maker in order to be then formed into rods in the final step.
- the method relates to the manufacture of filter rods.
- the method of the present invention it is possible to obtain rods, in particular filter rods, being improved in homogeneity of circumferential hardness over rods made by conventional non-twisting techniques.
- the present invention is also directed to a rod, in particular a filter rod, made from a continuous material, wherein the material is twisted about the longitudinal axis of the rod at a predefined twist rate.
- the twist rate of the material corresponds to a twist rate of 1 to 10 twists per meter, preferably 2 to 5 twists per meter and more preferably 3 to 4 twists per meter.
- the twist rate of the material corresponds to a twist of 90 to 180degrees over a length of 9.5 centimetres to 13 centimetres.
- the rods obtainable by use of the transport jet adapter of the present invention show an improvement in material distribution over conventionally formed rods.
- the rods of the present invention have a lower variation in circumferential hardness expressed as H min /H max compared to conventionally formed rods.
- a rod preferably a filter rod, with a variation in circumferential hardness H min /H max of more than 0.95, preferably more than 0.97 and more preferably more than 0.99.
- H min refers to the minimum hardness and H max refers to the maximum hardness measured about the circumference of a filter rod.
- H min and H max may be obtained by using a Borgwaldt DD60A instrument which is known in the art for determining the hardness of cigarettes. The principle of the measurement is described below in reference to Figure 7 .
- the rod is a filter rod for tobacco products.
- the material used for forming the rods can be any continuous material having sufficient filtration efficiency according to desired demands.
- the material is cellulose acetate tow.
- the material is selected or derived from the group consisting of cellulose acetate tow, polylactic acid, paper, metallized paper, metallized sheet material, metal sheet, tobacco leaf, reconstituted tobacco, filamentary material, non-woven material and combinations thereof.
- sheet materials can be supplied directly in the form of a sheet or foil.
- fibre-like structures can be formed from the sheet materials which fibres can then be formed into a continuous non-woven material derived from the sheet material.
- the rods obtainable by use of the transport jet adapter of the present invention are useful for the production of filter tips.
- the present invention is therefore directed to filter tips obtained from the rods of the fourth and fifth aspect of the present invention.
- the filter tips are filter tips for tobacco products.
- tobacco products in particular cigarettes, comprising the filter tip of the sixth aspect of the invention.
- Figure 1 shows in cross-section a prior art filter rod.
- the rod shows the typical hardness distribution pattern that is obtained when a substantially flat continuous strand of cellulose acetate tow is formed into a rod-shaped article with conventional non-twisting techniques.
- the material used for forming the filter rod is unevenly distributed within the rod.
- the distribution of material has its maximum at the diameter in direction parallel to the plane defined by the supplied material. This results in a corresponding density distribution. This is believed to cause variation in hardness about the circumference of the rod as shown qualitatively in the diagram of Fig. 2 .
- the arrows in Figures 1 and 2 indicate different measurement points about the circumference of the rod.
- Figure 3 shows a cigarette filter rod maker suitable for the practice of the present invention comprising a transport jet 1, a garniture funnel 3, a garniture tongue 4, garniture belt 5 and plug wrap paper 6.
- the transport jet 1 receives a continuous material 2 from guiding rolls 7 of a typical prior art opening device 8 for opening the continuous material 2, like cellulose acetate filter tow.
- Fig. 4 schematically shows a longitudinal section of transport jet 1.
- the transport jet comprises the transport jet adapter 10 of the present invention.
- the transport jet adapter 10 is positioned downstream to the location where the air or gas (shown by arrows) used for transporting the continuous material 2 is supplied by the air/gas nozzle of the transport jet 1.
- the air/gas stream forces the continuous material 2 through the transport jet adapter 10 of the present invention (twist not shown).
- FIG. 5 schematically shows the transport jet adapter 10 of the present invention.
- the transport jet adapter 10 comprises a first open end 11 defining an opening for receiving a continuous material 2 (material not shown), a second open end 12 defining an outlet for supplying the material 2 to a garniture of a filter rod maker, and a passageway for passing the material through the transport jet adapter, the passageway being defined by the inner surface of the wall 13 connecting the first open end 11 and the second open end 12 of the transport jet adapter 10.
- the inner surface of the wall 13 comprises a plurality of rifled edges 14 which are twisted about the longitudinal axis of the passageway at a predefined twist rate for twisting the continuous material 2 at the corresponding rate.
- the rifled edges 14 force the continuous material 2 to twist about its longitudinal axis as the continuous material 2 passes the transport jet adapter 10 from the transport jet 1 to the garniture of the filter rod maker.
- the twist of the continuous material 2 homogenizes the distribution of the material and thus homogenizes the circumferentially measured hardness.
- Figure 6 schematically shows a cross-sectional view of the transport jet adapter 10 of the present invention.
- Point 20 indicates the maximum of the hills defined by the rifled edges 14 and point 22 indicates the minimum of the valley defined between two adjacent hills.
- Point 24 indicates the centre of concentric circles 26 and 28.
- Circle 26 has a radius r 1 denoted with reference numeral 30 in Fig. 6 and defined by the distance between points 20 and 24 and circle 28 has a radius r 2 denoted with reference numeral 32 in Fig. 6 and defined by the distance between points 22 and 24.
- r 2 is also referred to as the inner radius of the transport jet adapter 10.
- the peak-to-peak distance between the hills and the valleys is defined as r 2 - r 1 .
- the outer surface 15 of the wall of the transport jet adapter is bounded by another concentric circle 34 having a radius r 3 also referred to as outer radius of the transport jet adapter 10.
- Point 36 indicates the most remote point of the outer surface 15 of the wall of the transport jet adapter 10 from centre 24.
- FIG. 7 schematically shows a filter rod subjected to a hardness measurement using a Borgwaldt DD60A instrument.
- the Borgwaldt DD60A instrument is fitted with a measuring head for cigarettes and with a cigarette receptacle (holder).
- filter rod samples are conditioned in a cabinet between 21 degrees Celsius and 23 degrees Celsius and between 57 percent and 63 percent RH (relative humidity) for at least 24 hours.
- the test laboratory is conditioned between 20 and 24 degrees Celsius and between 55 percent and 65 percent RH (relative humidity).
- the principle consists in measuring the average diameter of 10 filter rod samples before and after a load 40 of 2 kilograms (203.48 Newton) has been applied to the filter rod samples for 20 seconds.
- Reference numeral 42 represents the nominal rod diameter D S before compression.
- Reference numeral 44 represents the depressed diameter D D , that is, the diameter of the rod samples after the load has been applied for 20 seconds and reference numeral 46 represents the corresponding depression d of the rod samples.
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15152109.3A EP3047739A1 (de) | 2015-01-22 | 2015-01-22 | Transportstrahladapter und Verfahren zur Herstellung von Stangen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15152109.3A EP3047739A1 (de) | 2015-01-22 | 2015-01-22 | Transportstrahladapter und Verfahren zur Herstellung von Stangen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3047739A1 true EP3047739A1 (de) | 2016-07-27 |
Family
ID=52354900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15152109.3A Withdrawn EP3047739A1 (de) | 2015-01-22 | 2015-01-22 | Transportstrahladapter und Verfahren zur Herstellung von Stangen |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP3047739A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUA20163103A1 (it) * | 2016-05-03 | 2017-11-03 | Montrade S P A | Macchina e procedimento per la fabbricazione in continuo di articoli da tabacco, in particolare filtri |
| WO2018122301A1 (en) * | 2016-12-29 | 2018-07-05 | Philip Morris Products S.A. | Apparatus and method for producing a rod shaped article |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH377263A (fr) * | 1961-07-04 | 1964-04-30 | Abdul Dr Nouri | Filtre pour article à fumer et procédé pour la confection d'un tel filtre |
| US3173188A (en) * | 1961-11-03 | 1965-03-16 | Eastman Kodak Co | Tobacco smoke filter formation |
| US3595245A (en) * | 1968-08-14 | 1971-07-27 | Exxon Research Engineering Co | Cigarette filter from polypropylene fibers |
| WO1984002257A1 (en) * | 1982-12-13 | 1984-06-21 | Molins Plc | Filter rod manufacture |
| EP0269915A2 (de) | 1986-11-29 | 1988-06-08 | Rhone-Poulenc Rhodia Aktiengesellschaft | Verfahren und Vorrichtungen zum Herstellen von Tabakrauchfilterstäben |
| EP0594054A2 (de) | 1992-10-21 | 1994-04-27 | Hoechst Celanese Corporation | Adapter für Luftstrahltransport |
-
2015
- 2015-01-22 EP EP15152109.3A patent/EP3047739A1/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH377263A (fr) * | 1961-07-04 | 1964-04-30 | Abdul Dr Nouri | Filtre pour article à fumer et procédé pour la confection d'un tel filtre |
| US3173188A (en) * | 1961-11-03 | 1965-03-16 | Eastman Kodak Co | Tobacco smoke filter formation |
| US3595245A (en) * | 1968-08-14 | 1971-07-27 | Exxon Research Engineering Co | Cigarette filter from polypropylene fibers |
| WO1984002257A1 (en) * | 1982-12-13 | 1984-06-21 | Molins Plc | Filter rod manufacture |
| EP0269915A2 (de) | 1986-11-29 | 1988-06-08 | Rhone-Poulenc Rhodia Aktiengesellschaft | Verfahren und Vorrichtungen zum Herstellen von Tabakrauchfilterstäben |
| EP0594054A2 (de) | 1992-10-21 | 1994-04-27 | Hoechst Celanese Corporation | Adapter für Luftstrahltransport |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUA20163103A1 (it) * | 2016-05-03 | 2017-11-03 | Montrade S P A | Macchina e procedimento per la fabbricazione in continuo di articoli da tabacco, in particolare filtri |
| WO2018122301A1 (en) * | 2016-12-29 | 2018-07-05 | Philip Morris Products S.A. | Apparatus and method for producing a rod shaped article |
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| 18W | Application withdrawn |
Effective date: 20160830 |