EP2761086B1 - Cigarette paper comprising a lamellar filler - Google Patents
Cigarette paper comprising a lamellar filler Download PDFInfo
- Publication number
- EP2761086B1 EP2761086B1 EP13724247.5A EP13724247A EP2761086B1 EP 2761086 B1 EP2761086 B1 EP 2761086B1 EP 13724247 A EP13724247 A EP 13724247A EP 2761086 B1 EP2761086 B1 EP 2761086B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cigarette
- cigarette paper
- weight
- paper
- paper according
- 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.)
- Active
Links
- 235000019504 cigarettes Nutrition 0.000 title claims description 90
- 239000000945 filler Substances 0.000 title claims description 32
- 238000009792 diffusion process Methods 0.000 claims description 40
- 230000035699 permeability Effects 0.000 claims description 33
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 26
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 241000208125 Nicotiana Species 0.000 claims description 8
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 8
- 229910021532 Calcite Inorganic materials 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000003570 air Substances 0.000 description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 16
- 229910002091 carbon monoxide Inorganic materials 0.000 description 16
- 239000000779 smoke Substances 0.000 description 16
- 235000010216 calcium carbonate Nutrition 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- CXUJOBCFZQGUGO-UHFFFAOYSA-F calcium trimagnesium tetracarbonate Chemical compound [Mg++].[Mg++].[Mg++].[Ca++].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O CXUJOBCFZQGUGO-UHFFFAOYSA-F 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000515 huntite Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- NRJSPYLREXHRNJ-UHFFFAOYSA-F tetramagnesium;tricarbonate;dihydroxide;trihydrate Chemical compound O.O.O.[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O NRJSPYLREXHRNJ-UHFFFAOYSA-F 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- 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
-
- 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
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
-
- 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
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
- A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
-
- 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
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
- A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
-
- 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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
- D21H21/52—Additives of definite length or shape
-
- 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
Definitions
- the present invention relates to a cigarette paper containing pulp fibers and filler particles.
- the term "contain” does not exclude that the cigarette paper contains other ingredients.
- it relates to a cigarette paper which makes it possible to reduce the amount of carbon monoxide in cigarette smoke and an associated cigarette.
- the substances in the cigarette smoke are determined by a method in which the cigarettes are smoked to standardized specifications. Such a method is described for example in ISO 4387.
- the cigarette is first at the beginning of the The first train was lit and then every minute, a train at the mouth end of the cigarette with a duration of 2 seconds and a volume of 35 cm 3 with a sinusoidal Glasprofil performed on the cigarette. The moves are repeated until the cigarette falls below a certain, given in the standard length.
- the smoke flowing from the mouth end of the cigarette during traction is collected in a Cambridge Filter Pad and this filter is thereafter chemically analyzed for its content of various substances, such as nicotine.
- the gas phase flowing from the mouth end of the cigarette through the Cambridge Filter Pad during trains is collected and also chemically analyzed, for example to determine the level of carbon monoxide in the cigarette smoke.
- the cigarette is therefore in two fluidically different states.
- there is a significant pressure difference typically in the range of 200 Pa to 1000 Pa, between the tobacco facing inside and the outside of the cigarette paper.
- air flows through the cigarette paper in the tobacco part of the cigarette and dilutes the resulting smoke during the move.
- the extent of dilution of the cigarette smoke is determined by the air permeability of the paper.
- the air permeability is determined according to ISO 2965 and indicates which air volume per unit time, per unit area and per pressure difference flows through the cigarette paper and therefore has the unit cm 3 / (min cm 2 kPa).
- CU CORESTA unit
- the air permeability of cigarette papers is in the range of 0 CU to 200 CU, with the range of 20 CU to 120 CU being generally preferred.
- the cigarette will glow without any appreciable pressure difference between the interior of the tobacco part of the cigarette and the environment, so that the gas transport is determined by the gas concentration difference between the tobacco part and the environment.
- carbon monoxide can also diffuse through the cigarette paper from the tobacco part into the ambient air.
- the diffusion capacity is the relevant parameter for the reduction of carbon monoxide.
- the diffusion capacity of a cigarette paper for CO 2 can be determined, for example, with the CO 2 Diffusivity Meter from Sodim and is closely related to the diffusion capacity of a cigarette paper for CO.
- the diffusion capacity should have an independent, important importance for the carbon monoxide content in the cigarette smoke and that the values of carbon monoxide in the cigarette smoke should be reduced by increasing the diffusion capacity.
- This is particularly important in view of the self-extinguishing cigarettes known from the prior art, in which comparatively high levels of carbon monoxide are observed.
- fire retardant streaks are applied to the cigarette paper for self extinguishment in a standardized test (ISO 12863). This or a similar test, for example, is part of legal regulations in the US, Canada, Australia and the European Union.
- the increased levels of carbon monoxide are due to the fact that the carbon monoxide can diffuse from the cigarette only to a very small extent by the fire-retardant strip. It would therefore be of great advantage to have cigarette papers available that compensate for this undesirable side effect.
- the US 5,253,660 discloses a cigarette paper in which a novel filler is used which reacts strongly endothermically upon combustion to produce non-combustible, non-toxic and non-corrosive gases.
- the filler consists of a mixture of huntite (Mg 3 Ca (CO 3 ) 4 ) and hydromagnesite (Mg 4 (CO 3 ) 3 (OH) 2 .3H 2 O).
- the filler with this chemical composition can occur in five different variants, one of which is described as "platelet-shaped".
- the present invention has for its object to provide a cigarette paper, which allows a selective reduction of the carbon monoxide content in cigarette smoke at a given air permeability.
- the cigarette paper contains pulp fibers and filler particles, wherein at least a part of the filler particles has a platelet-shaped form.
- the inventors have found that the diffusion capacity of the cigarette paper - while maintaining the air permeability - can be substantially increased if at least a portion of the filler particles has a platelet-like shape. Particularly high diffusion capacities can be achieved if the entire filler is formed from platelet-shaped particles. Nevertheless, one can occasionally use a smaller proportion of platelet-shaped filler for cost reasons.
- at least 20%, preferably at least 40%, particularly preferably at least 55% and in particular at least 70% of the filler particles, based on the mass or on the particle number have a platelet-like shape.
- Such different proportions of platelet-shaped and non-platelet-shaped particles can be achieved, for example, by adding different filler types in mixture to the paper.
- the platelet-shaped filler particles have a length 1, a width b and a thickness d, which correspond to the respective maximum dimensions in three mutually orthogonal spatial directions, both the length 1 and the width b at least twice as large, preferably at least four times are as big as the thickness d.
- the length 1 and the width b will usually be different from each other, but should differ by a factor of less than 5, preferably less than 3 and more preferably less than 2.
- the length 1, the width b and the thickness d could correspond, for example, to the edge lengths of the cuboid, i. H. it is by no means necessary for the length 1 to correspond to the longest dimension of the particle, which in the case of an idealized cuboid would correspond to the spatial diagonal. In general, however, the length 1 will be greater than or equal to the width b, and in turn will differ by a factor of 2.5 or less from the longest spatial direction of the particle.
- FIG. 1 illustrates a platelet-shaped filler particle in which the length 1, width b and thickness d are drawn.
- the diffusion capacity D * in conventional papers is, to a good approximation, proportional to the root of the air permeability Z in CU, that is, D * ⁇ Z (1/2) .
- D x * for CO 2 of a cigarette paper with an air permeability of x CU therefore: D x * ⁇ 50 / x ⁇ 1 . 80 cm / s . preferably ⁇ 1.85 cm / s.
- the geometry that is to say the platelet shape, is significantly more decisive than the mean particle size, ie the desired effect is achieved within certain limits independently of the average particle size.
- the mass-median value d 50 of the particle size distribution measured according to ISO 13317-3 is between 0.2 ⁇ m and 4.0 ⁇ m, preferably between 0.5 ⁇ m and 3.0 ⁇ m.
- the filler material is initially not further limited as long as the filler is permitted for cigarette paper for toxicological or legal reasons.
- the filler contains platelet-shaped calcium carbonate, which is completely safe in terms of health and legal considerations.
- platelet-shaped calcium carbonate it is not necessary for the filler to be completely formed by platelet-shaped calcium carbonate, but calcium carbonates without platelet-shaped geometry or completely different fillers may also be added.
- the calcium carbonate is a calcite, a vaterite, or a mixture thereof, which are preferred over aragonite or other modifications of the calcium carbonate.
- the mixture consists of 50 wt% to 70 wt% calcite and 30 wt% to 50 wt% vaterite.
- the filler according to the invention can be added to the paper in the usual way, as is known to the person skilled in the art in papermaking. Also, in the production of the paper requires no additional, special measures after the addition of the filler according to the invention.
- the total filler content of the paper between 10 wt .-% and 45 wt .-%, particularly preferably between 20 wt .-% and 40 wt .-%.
- the cigarette paper preferably has a basis weight of from 10 g / m 2 to 60 g / m 2 , particularly preferably from 20 g / m 2 to 35 g / m 2 .
- the paper is treated in areas with fire retardant materials that are capable of imparting self extinguishing properties to a cigarette made from the paper.
- fire retardant areas hinder the diffusion of CO out of the cigarette between two consecutive trains. This is the reason why such self-extinguishing cigarettes are typically observed to have elevated CO levels. This is a significant problem because increased fire safety should not be at the expense of the harmfulness of cigarette smoke.
- the typical increase in the CO content in cigarette smoke due to the fire-retardant regions can be at least partially compensated by the increased diffusion capacity of the paper in the untreated sections. Therefore, the invention in connection with such treated paper unfolds a special technical effect.
- Example 1 a non-inventive cigarette paper consisting of wood pulp fibers and 25.5 wt .-% of a conventional, non-platelet, precipitated calcium carbonate, which served as a comparative example.
- the cigarette paper had a basis weight of 28.2 g / m 2 and an air permeability of 46.9 CU.
- Another identical cigarette paper was prepared, but in which instead of the conventional calcium carbonate, a calcium carbonate with platelet-shaped particles was used. X-ray diffraction analysis revealed that this is a mixture of about 60% by weight of calcite and about 40 % by weight of vaterite. The average particle diameter was about 1.1 ⁇ m. A method for producing such platelet-shaped calcium carbonate is in EP 1 151 966 B1 described.
- a non-inventive cigarette paper consisting of pulp fibers from 30.2 wt .-% of a conventional non-platelet precipitated calcium carbonate was prepared as a comparative example.
- This cigarette paper was modified by using again a mixture of calcite and vaterite having a platelet-like structure instead of the conventional calcium carbonate.
- the modified cigarette paper had a filler content of 31.0% by weight, a basis weight of 29.1 g / m 2 and an air permeability of 59.5 CU.
- the diffusion capacity was 2.17 cm / s.
- Such a high diffusion capacity, as achieved by the paper according to the invention according to Example 2 would be expected in conventional cigarette papers only at an air permeability of about 85 CU.
- the cigarette papers according to the invention allow a considerably improved diffusion of carbon monoxide from the tobacco rod of a cigarette made with this paper, without having to change the air permeability of the cigarette paper.
Description
Die vorliegende Erfindung betrifft ein Zigarettenpapier, das Zellstofffasern und Füllstoffpartikel enthält. Dabei schließt der Begriff "enthalten" nicht aus, dass das Zigarettenpapier noch weitere Bestandteile enthält. Insbesondere betrifft sie ein Zigarettenpapier, das es gestattet, die Menge an Kohlenmonoxid im Zigarettenrauch zu vermindern, sowie eine zugehörige Zigarette.The present invention relates to a cigarette paper containing pulp fibers and filler particles. The term "contain" does not exclude that the cigarette paper contains other ingredients. In particular, it relates to a cigarette paper which makes it possible to reduce the amount of carbon monoxide in cigarette smoke and an associated cigarette.
Es ist allgemein bekannt, dass der Zigarettenrauch viele schädliche Substanzen, darunter auch Kohlenmonoxid enthält. Es besteht daher ein großes Interesse in der Industrie, Zigaretten zu produzieren, deren Rauch nennenswert weniger schädliche Substanzen enthält. Zur Reduktion der Menge an solchen Substanzen sind Zigaretten oft mit Filtern, typischerweise aus Zelluloseacetat, ausgestattet. Diese Filter sind jedoch nicht geeignet, den Gehalt an Kohlenmonoxid im Rauch der Zigarette zu reduzieren, da Zelluloseacetat das Kohlenmonoxid nicht absorbieren kann. Verschiedene Vorschläge, Katalysatoren in den Filter einzubauen, um Kohlenmonoxid in das weniger schädliche Kohlendioxid umzuwandeln, waren bisher teils aus funktionalen, teils aus wirtschaftlichen Gründen nicht erfolgreich.It is well known that cigarette smoke contains many harmful substances, including carbon monoxide. There is therefore a great interest in the industry to produce cigarettes whose smoke contains significantly less harmful substances. To reduce the amount of such substances, cigarettes are often equipped with filters, typically cellulose acetate. However, these filters are not suitable for reducing the content of carbon monoxide in the smoke of the cigarette, since cellulose acetate can not absorb the carbon monoxide. Various proposals to incorporate catalysts into the filter to convert carbon monoxide into the less harmful carbon dioxide have been unsuccessful, partly for functional reasons and partly for economic reasons.
Es ist auch bekannt, den in der Zigarette entstehenden Rauch beispielsweise durch einen durch eine Perforation des Mundstückbelagspapiers strömenden Luftstrom zu verdünnen. Dadurch kann zwar der Gehalt an Kohlenmonoxid im Zigarettenrauch reduziert werden, jedoch um den Preis, dass auch die den Geschmack der Zigarette bestimmenden Substanzen verdünnt werden und damit der Geschmackseindruck der Zigarette und die Kundenakzeptanz verschlechtert werden.It is also known to dilute the smoke produced in the cigarette, for example, by a stream of air flowing through a perforation of the tipping paper. As a result, although the content of carbon monoxide in the cigarette smoke can be reduced, but at the price that the substances determining the taste of the cigarette are diluted and thus the taste impression of the cigarette and the customer acceptance are deteriorated.
Die Substanzen im Zigarettenrauch werden durch ein Verfahren bestimmt, bei dem die Zigaretten nach genormten Vorgaben abgeraucht werden. Ein solches Verfahren ist beispielsweise in ISO 4387 beschrieben. Dabei wird die Zigarette zunächst am Beginn des ersten Zuges angezündet und dann jede Minute ein Zug am Mundende der Zigarette mit einer Dauer von 2 Sekunden und einem Volumen von 35 cm3 bei einem sinusförmigen Zugprofil an der Zigarette durchgeführt. Die Züge werden dabei solange wiederholt, bis die Zigarette eine bestimmte, in der Norm vorgegebene Länge unterschreitet. Der aus dem Mundende der Zigarette während der Züge strömende Rauch wird in einem Cambridge Filter Pad gesammelt und dieser Filter wird danach hinsichtlich seines Gehalts an verschiedenen Substanzen, beispielsweise Nikotin, chemisch analysiert. Die aus dem Mundende der Zigarette während der Züge durch das Cambridge Filter Pad hindurchströmende Gasphase wird gesammelt und ebenfalls chemisch analysiert, beispielsweise um den Gehalt an Kohlenmonoxid im Zigarettenrauch zu ermitteln.The substances in the cigarette smoke are determined by a method in which the cigarettes are smoked to standardized specifications. Such a method is described for example in ISO 4387. The cigarette is first at the beginning of the The first train was lit and then every minute, a train at the mouth end of the cigarette with a duration of 2 seconds and a volume of 35 cm 3 with a sinusoidal Zugprofil performed on the cigarette. The moves are repeated until the cigarette falls below a certain, given in the standard length. The smoke flowing from the mouth end of the cigarette during traction is collected in a Cambridge Filter Pad and this filter is thereafter chemically analyzed for its content of various substances, such as nicotine. The gas phase flowing from the mouth end of the cigarette through the Cambridge Filter Pad during trains is collected and also chemically analyzed, for example to determine the level of carbon monoxide in the cigarette smoke.
Während des genormten Abrauchens befindet sich die Zigarette also in zwei strömungstechnisch unterschiedlichen Zuständen. Während des Zuges besteht eine nennenswerte Druckdifferenz, typischerweise im Bereich von 200 Pa bis 1000 Pa zwischen der dem Tabak zugewandten Innenseite und der Außenseite des Zigarettenpapiers. Durch diese Druckdifferenz strömt Luft durch das Zigarettenpapier in den Tabakteil der Zigarette und verdünnt den während des Zuges entstehenden Rauch. Während dieser Phase, die pro Zug 2 Sekunden dauert, wird das Ausmaß der Verdünnung des Zigarettenrauchs durch die Luftdurchlässigkeit des Papiers bestimmt. Die Luftdurchlässigkeit wird nach ISO 2965 bestimmt und gibt an, welches Luftvolumen pro Zeiteinheit, pro Flächeneinheit und pro Druckdifferenz durch das Zigarettenpapier strömt und hat daher die Einheit cm3/(min cm2 kPa). Sie wird oft als CORESTA Einheit (CU, CORESTA Unit) bezeichnet (1 CU = 1 cm3/(min cm2 kPa)). Mit diesem Wert wird die Strangventilation einer Zigarette gesteuert, also der Luftstrom, der bei einem Zug an der Zigarette durch das Zigarettenpapier in die Zigarette strömt. Üblicherweise liegt die Luftdurchlässigkeit von Zigarettenpapieren im Bereich von 0 CU bis 200 CU, wobei der Bereich von 20 CU bis 120 CU im Allgemeinen bevorzugt wird.During standardized smoking, the cigarette is therefore in two fluidically different states. During the draw, there is a significant pressure difference, typically in the range of 200 Pa to 1000 Pa, between the tobacco facing inside and the outside of the cigarette paper. By this pressure difference, air flows through the cigarette paper in the tobacco part of the cigarette and dilutes the resulting smoke during the move. During this phase, which lasts 2 seconds per puff, the extent of dilution of the cigarette smoke is determined by the air permeability of the paper. The air permeability is determined according to ISO 2965 and indicates which air volume per unit time, per unit area and per pressure difference flows through the cigarette paper and therefore has the unit cm 3 / (min cm 2 kPa). It is often referred to as CORESTA unit (CU, CORESTA unit) (1 CU = 1 cm 3 / (min cm 2 kPa)). With this value, the strand ventilation of a cigarette is controlled, ie the air flow, which flows in a train on the cigarette through the cigarette paper into the cigarette. Typically, the air permeability of cigarette papers is in the range of 0 CU to 200 CU, with the range of 20 CU to 120 CU being generally preferred.
Im Zeitraum zwischen den Zügen hingegen glimmt die Zigarette ohne eine nennenswerte Druckdifferenz zwischen dem Inneren des Tabakteils der Zigarette und der Umgebung, sodass der Gastransport durch die Gaskonzentrationsdifferenz zwischen Tabakteil und Umgebung bestimmt wird. Dabei kann auch Kohlenmonoxid durch das Zigarettenpapier hindurch aus dem Tabakteil in die Umgebungsluft diffundieren. In dieser Phase, die nach dem in ISO 4387 beschriebenen Verfahren pro Zug 58 Sekunden dauert, ist die Diffusionskapazität der für die Reduktion des Kohlenmonoxids maßgebliche Parameter.In the period between trains, however, the cigarette will glow without any appreciable pressure difference between the interior of the tobacco part of the cigarette and the environment, so that the gas transport is determined by the gas concentration difference between the tobacco part and the environment. In this case, carbon monoxide can also diffuse through the cigarette paper from the tobacco part into the ambient air. In this phase, which lasts 58 seconds per train per train, as described in ISO 4387, the diffusion capacity is the relevant parameter for the reduction of carbon monoxide.
Die Diffusionskapazität ist ein Transferkoeffizient und beschreibt die Durchlässigkeit des Zigarettenpapiers für einen Gasstrom, der durch eine Konzentrationsdifferenz verursacht wird. Genauer bezeichnet die Diffusionskapazität das durch das Papier pro Zeiteinheit, pro Flächeneinheit und pro Konzentrationsdifferenz tretende Gasvolumen und hat daher die Einheit cm3/(s cm2) = cm/s. Die Diffusionskapazität eines Zigarettenpapiers für CO2 kann beispielsweise mit dem CO2 Diffusivity Meter der Firma Sodim bestimmt werden und steht in einem engen Zusammenhang mit der Diffusionskapazität eines Zigarettenpapiers für CO.The diffusion capacity is a transfer coefficient and describes the permeability of the cigarette paper to a gas flow caused by a concentration difference. More specifically, the diffusion capacity refers to the gas volume passing through the paper per unit time, per unit area and per concentration difference, and therefore has the unit cm 3 / (s cm 2 ) = cm / s. The diffusion capacity of a cigarette paper for CO 2 can be determined, for example, with the CO 2 Diffusivity Meter from Sodim and is closely related to the diffusion capacity of a cigarette paper for CO.
Aus den obigen Betrachtungen ergibt sich, dass die Diffusionskapazität eine eigenständige, wichtige Bedeutung für den Kohlenmonoxidgehalt im Zigarettenrauch haben sollte und dass sich die Werte an Kohlenmonoxid im Zigarettenrauch durch Erhöhung der Diffusionskapazität verringern lassen sollten. Dies ist insbesondere im Hinblick auf die aus dem Stand der Technik bekannten selbstverlöschenden Zigaretten von Bedeutung, bei denen vergleichsweise hohe Werte an Kohlenmonoxid beobachtet werden. Bei solchen Zigaretten werden brandhemmende Streifen auf das Zigarettenpapier aufgebracht, um in einem genormten Test (ISO 12863) Selbstverlöschung zu erzielen. Dieser oder ein ähnlicher Test ist beispielsweise Bestandteil gesetzlicher Regelungen in den USA, Kanada, Australien und der Europäischen Union. Die erhöhten Werte an Kohlenmonoxid kommen dadurch zustande, dass das Kohlenmonoxid nur in sehr geringem Ausmaß durch die brandhemmenden Streifen aus der Zigarette diffundieren kann. Es wäre daher von großem Vorteil, Zigarettenpapiere zur Verfügung zu haben, die diesen unerwünschten Nebeneffekt kompensieren.From the above considerations it can be seen that the diffusion capacity should have an independent, important importance for the carbon monoxide content in the cigarette smoke and that the values of carbon monoxide in the cigarette smoke should be reduced by increasing the diffusion capacity. This is particularly important in view of the self-extinguishing cigarettes known from the prior art, in which comparatively high levels of carbon monoxide are observed. In such cigarettes, fire retardant streaks are applied to the cigarette paper for self extinguishment in a standardized test (ISO 12863). This or a similar test, for example, is part of legal regulations in the US, Canada, Australia and the European Union. The increased levels of carbon monoxide are due to the fact that the carbon monoxide can diffuse from the cigarette only to a very small extent by the fire-retardant strip. It would therefore be of great advantage to have cigarette papers available that compensate for this undesirable side effect.
In der Praxis stellt es sich allerdings als äußerst schwierig heraus, die Diffusionskapazität unabhängig von der Luftdurchlässigkeit des Papiers im Papierherstellungsprozess einzustellen. Die Luftdurchlässigkeit ist jedoch ihrerseits in den meisten Fällen Gegenstand der von den Zigarettenherstellern vorgegebenen Papierspezifikationen, sodass sich - unter dieser Vorgabe - die Diffusionskapazität praktisch aus dem Papierherstellungsprozess ergibt und nur in einem sehr kleinen Bereich variiert werden kann (
Aus dem Stand der Technik sind verschiedene Ansätze bekannt, um die Diffusionskonstante des Zigarettenpapiers zu erhöhen, beispielsweise durch Zugabe von thermisch instabilen Substanzen (
Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Zigarettenpapier anzugeben, welches eine selektive Verringerung des Kohlenmonoxidgehalts im Zigarettenrauch bei vorgegebener Luftdurchlässigkeit ermöglicht.The present invention has for its object to provide a cigarette paper, which allows a selective reduction of the carbon monoxide content in cigarette smoke at a given air permeability.
Diese Aufgabe wird durch ein Zigarettenpapier nach Anspruch 1 gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.This object is achieved by a cigarette paper according to claim 1. Advantageous developments are specified in the dependent claims.
Erfindungsgemäß enthält das Zigarettenpapier Zellstofffasern und Füllstoffpartikel, wobei zumindest ein Teil der Füllstoffpartikel eine plättchenförmige Gestalt hat. Die Erfinder haben festgestellt, dass sich die Diffusionskapazität des Zigarettenpapiers - bei gleichbleibender Luftdurchlässigkeit - wesentlich erhöhen lässt, wenn zumindest ein Teil der Füllstoffpartikel eine plättchenförmige Gestalt hat. Besonders hohe Diffusionskapazitäten lassen sich erzielen, wenn der gesamte Füllstoff aus plättchenförmigen Partikeln gebildet wird. Gleichwohl kann man fallweise aus Kostengründen einen geringeren Anteil an plättchenförmigem Füllstoff einsetzen. Erfindungsgemäß sollten jedoch mindestens 20 %, vorzugsweise mindestens 40 %, besonders vorzugsweise mindestens 55 % und insbesondere mindestens 70 % der Füllstoffpartikel, bezogen auf die Masse oder auf die Teilchenzahl, eine plättchenförmige Gestalt haben. Derartige unterschiedliche Anteile von plättchenförmigen und nicht-plättchenförmigen Partikeln können beispielsweise dadurch erreicht werden, dass dem Papier unterschiedliche Füllstoffsorten in Mischung beigegeben werden.According to the invention, the cigarette paper contains pulp fibers and filler particles, wherein at least a part of the filler particles has a platelet-shaped form. The inventors have found that the diffusion capacity of the cigarette paper - while maintaining the air permeability - can be substantially increased if at least a portion of the filler particles has a platelet-like shape. Particularly high diffusion capacities can be achieved if the entire filler is formed from platelet-shaped particles. Nevertheless, one can occasionally use a smaller proportion of platelet-shaped filler for cost reasons. However, according to the invention at least 20%, preferably at least 40%, particularly preferably at least 55% and in particular at least 70% of the filler particles, based on the mass or on the particle number, have a platelet-like shape. Such different proportions of platelet-shaped and non-platelet-shaped particles can be achieved, for example, by adding different filler types in mixture to the paper.
In einer bevorzugten Ausführungsform haben die plättchenförmigen Füllstoffpartikel eine Länge 1, eine Breite b und eine Dicke d, die den jeweils maximalen Abmessungen in drei zueinander orthogonalen Raumrichtungen entsprechen, wobei sowohl die Länge 1 als auch die Breite b mindestens doppelt so groß, vorzugsweise mindestens viermal so groß sind, wie die Dicke d.In a preferred embodiment, the platelet-shaped filler particles have a length 1, a width b and a thickness d, which correspond to the respective maximum dimensions in three mutually orthogonal spatial directions, both the length 1 and the width b at least twice as large, preferably at least four times are as big as the thickness d.
Die Länge 1 und die Breite b werden dabei üblicherweise verschieden voneinander sein, sollten sich aber um einen Faktor von weniger als 5, vorzugsweise weniger als 3 und besonders vorzugsweise weniger als 2 unterscheiden.The length 1 and the width b will usually be different from each other, but should differ by a factor of less than 5, preferably less than 3 and more preferably less than 2.
Bei der idealisierten Vorstellung einer nahezu quaderförmigen Geometrie könnten die Länge 1, die Breite b und die Dicke d beispielsweise den Kantenlängen des Quaders entsprechen, d. h. es ist keinesfalls nötig, dass die Länge 1 der längsten Abmessung des Partikels entspricht, welche bei einem idealisierten Quader der Raumdiagonale entsprechen würde. In de Regel wir die Länge 1 jedoch größer oder gleich der Breite b sein und sich ihrerseits um einen Faktor von 2,5 oder weniger von der längsten Raumrichtung des Partikels unterscheiden.In the idealized idea of a nearly cuboid geometry, the length 1, the width b and the thickness d could correspond, for example, to the edge lengths of the cuboid, i. H. it is by no means necessary for the length 1 to correspond to the longest dimension of the particle, which in the case of an idealized cuboid would correspond to the spatial diagonal. In general, however, the length 1 will be greater than or equal to the width b, and in turn will differ by a factor of 2.5 or less from the longest spatial direction of the particle.
Zur Illustration wird auf die beigefügte
Wie eingangs erwähnt ist die Diffusionskapazität D* bei üblichen Papieren in guter Näherung proportional zur Wurzel aus der Luftdurchlässigkeit Z in CU, das heißt es gilt D* ∼ Z (1/2). Ein typischer Wert für die Diffusionskapazität für CO2 bei einer Luftdurchlässigkeit von Z = 50 CU beträgt z. B. 1,65 cm/s. Bisher ist es technisch außerordentlich schwierig, die Diffusionskapazität D* unabhängig von der Luftdurchlässigkeit Z derart zu variieren, dass sich bei vorgegebener Luftdurchlässigkeit Z eine erhöhte Diffusionskapazität D* ergibt. Durch die erfindungsgemäße Verwendung von plättchenförmigem Füllstoff ist es jedoch möglich, die Diffusionskapazität D* für CO2 bei einem ansonsten gleichen Papier mit einer Luftdurchlässigkeit von Z = 50 CU auf D*≥ 1,80 cm/s anzuheben. Eine ähnliche relative Erhöhung der Diffusionskapazität D* aufgrund des plättchenförmigen Füllstoffs ergibt sich auch bei Luftdurchlässigkeiten Z, die von Z = 50 CU abweichen. Um diesen Effekt auch für allgemeine Luftdurchlässigkeiten von x CU zu quantifizieren, lässt sich die Diffusionskapazität D* für CO2 unter Ausnutzung der Beziehung
In einer vorteilhaften Ausführungsform der Erfindung gilt für die Diffusionskapazität
Es zeigt sich, dass für den erfindungsgemäßen Effekt die Geometrie, das heißt die Plättchengestalt, wesentlich entscheidender ist als die mittlere Partikelgröße, d. h. der erwünschte Effekt wird in gewissen Grenzen unabhängig von der mittleren Partikelgröße erzielt. In einer bevorzugten Ausführungsform beträgt der massenbezogene Medianwert d50 der nach ISO 13317-3 gemessenen Partikelgrößenverteilung zwischen 0,2 µm und 4,0 µm, vorzugsweise zwischen 0,5 µm und 3,0 µm.It turns out that for the effect according to the invention, the geometry, that is to say the platelet shape, is significantly more decisive than the mean particle size, ie the desired effect is achieved within certain limits independently of the average particle size. In a preferred embodiment, the mass-median value d 50 of the particle size distribution measured according to ISO 13317-3 is between 0.2 μm and 4.0 μm, preferably between 0.5 μm and 3.0 μm.
Da nach Untersuchungen der Erfinder in erster Linie die Partikelgeometrie bzw. -gestalt ausschlaggebend für die Erhöhung der Diffusionskapazität ist, ist das Füllstoffmaterial zunächst nicht weiter beschränkt, solange der Füllstoff aus toxikologischen oder gesetzlichen Gründen für Zigarettenpapier zulässig ist. Vorzugsweise enthält der Füllstoff jedoch plättchenförmiges Calciumcarbonat, welches in Bezug auf gesundheitliche und gesetzliche Erwägungen vollkommen unbedenklich ist. Wie eingangs erwähnt, ist es dabei jedoch nicht erforderlich, dass der Füllstoff vollständig durch plättchenförmiges Calciumcarbonat gebildet wird, sondern es können auch Calciumcarbonate ohne plättchenförmige Geometrie oder ganz andere Füllstoffe beigemischt sein.Since, according to investigations of the inventors, the particle geometry or shape is primarily decisive for increasing the diffusion capacity, the filler material is initially not further limited as long as the filler is permitted for cigarette paper for toxicological or legal reasons. Preferably, however, the filler contains platelet-shaped calcium carbonate, which is completely safe in terms of health and legal considerations. However, as mentioned above, it is not necessary for the filler to be completely formed by platelet-shaped calcium carbonate, but calcium carbonates without platelet-shaped geometry or completely different fillers may also be added.
In einer bevorzugten Ausführungsform ist das Calciumcarbonat ein Calcit, ein Vaterit oder ein Gemisch daraus, die gegenüber Aragonit oder anderen Modifikationen des Calciumcarbonats bevorzugt sind. Vorzugsweise besteht das Gemisch aus 50 Gew.-% bis 70 Gew.-% Calcit und 30 Gew.-% bis 50 Gew.-% Vaterit.In a preferred embodiment, the calcium carbonate is a calcite, a vaterite, or a mixture thereof, which are preferred over aragonite or other modifications of the calcium carbonate. Preferably, the mixture consists of 50 wt% to 70 wt% calcite and 30 wt% to 50 wt% vaterite.
Der erfindungsgemäße Füllstoff kann dem Papier in der üblichen Weise beigegeben werden, wie es in der Papierherstellung dem Fachmann aus dem Stand der Technik bekannt ist. Auch bei der Herstellung des Papiers bedarf es nach Beigabe des erfindungsgemäßen Füllstoffes keiner zusätzlichen, besonderen Maßnahmen.The filler according to the invention can be added to the paper in the usual way, as is known to the person skilled in the art in papermaking. Also, in the production of the paper requires no additional, special measures after the addition of the filler according to the invention.
Vorzugsweise beträgt der gesamte Füllstoffgehalt des Papiers zwischen 10 Gew.-% und 45 Gew.-%, besonders vorzugsweise zwischen 20 Gew.-% und 40 Gew.-%. Ferner hat das Zigarettenpapier vorzugsweise ein Flächengewicht von 10 g/m2 bis 60 g/m2, besonders vorzugsweise von 20 g/m2 bis 35 g/m2.Preferably, the total filler content of the paper between 10 wt .-% and 45 wt .-%, particularly preferably between 20 wt .-% and 40 wt .-%. Further, the cigarette paper preferably has a basis weight of from 10 g / m 2 to 60 g / m 2 , particularly preferably from 20 g / m 2 to 35 g / m 2 .
In einer besonders bevorzugten Ausführungsform ist das Papier in Bereichen mit brandhemmenden Materialien behandelt, die geeignet sind, einer aus dem Papier gefertigten Zigarette Selbstverlöschungseigenschaften zu verleihen. Wie eingangs erwähnt wurde, behindern derartige brandhemmende Bereiche die Diffusion des CO aus der Zigarette heraus zwischen zwei aufeinander folgenden Zügen. Dies ist der Grund, weshalb man bei derartigen selbstverlöschenden Zigaretten typischerweise erhöhte CO-Werte beobachtet. Dies ist ein erhebliches Problem, weil der erhöhte Brandschutz nicht zu Lasten der Gesundheitsschädlichkeit des Zigarettenrauchs gehen sollte. Mit dem erfindungsgemäßen Zigarettenpapier lässt sich der typische Anstieg des CO-Gehalts im Zigarettenrauch aufgrund der brandhemmenden Bereiche durch die erhöhte Diffusionskapazität des Papiers in den unbehandelten Abschnitten zumindest teilweise kompensieren. Daher entfaltet die Erfindung in Zusammenhang mit derartig behandeltem Papier einen besonderen technischen Effekt.In a particularly preferred embodiment, the paper is treated in areas with fire retardant materials that are capable of imparting self extinguishing properties to a cigarette made from the paper. As previously mentioned, such fire retardant areas hinder the diffusion of CO out of the cigarette between two consecutive trains. This is the reason why such self-extinguishing cigarettes are typically observed to have elevated CO levels. This is a significant problem because increased fire safety should not be at the expense of the harmfulness of cigarette smoke. With the cigarette paper according to the invention, the typical increase in the CO content in cigarette smoke due to the fire-retardant regions can be at least partially compensated by the increased diffusion capacity of the paper in the untreated sections. Therefore, the invention in connection with such treated paper unfolds a special technical effect.
- Fig. 1Fig. 1
- ist eine schematische Darstellung eines plättchenförmigen Füllstoffpartikels, bei dem die Länge 1, die Breite b und die Dicke d eingezeichnet sind.is a schematic representation of a platelet-shaped filler particle, in which the length 1, the width b and the thickness d are drawn.
Ausgangspunkt für das Beispiel 1 ist ein nicht erfindungsgemäßes Zigarettenpapier bestehend aus Holzzellstofffasern und 25,5 Gew.-% eines herkömmlichen, nicht-plättchenförmigen, gefällten Calciumcarbonats, welches als Vergleichsbeispiel diente. Es könnten jedoch noch weitere Substanzen, beispielsweise Brandsalze vorgesehen sein. Das Zigarettenpapier hatte ein Flächengewicht von 28,2 g/m2 und eine Luftdurchlässigkeit von 46,9 CU. Die CO2-Diffusionskapazität wurde mit dem CO2 Diffusity Meter der Firma Sodim nach einer Konditionierung des Papiers gemäß ISO 187 gemessen und betrug
Ein weiteres an sich identisches Zigarettenpapier wurde hergestellt, bei dem jedoch anstatt des herkömmlichen Calciumcarbonats ein Calciumcarbonat mit plättchenförmigen Partikeln verwendet wurde. Eine Röntgenstrukturanalyse ergab, dass es sich hierbei um ein Gemisch aus etwa 60 Gew.-% Calcit und etwa 40 Gew.-% Vaterit handelt. Der mittlere Teilchendurchmesser betrug etwa 1,1 µm. Ein Verfahren zum Herstellen von derartigem plättchenförmigen Calciumcarbonat ist in
Man sieht, dass durch Austausch des Kalks bei praktisch identischen Papiereigenschaften eine Steigerung der Diffusionskapazität von 1,59 cm/s auf 1,81 cm/s bewirkt werden kann, also um 13,8 %. Dabei ist zu berücksichtigen, dass die Luftdurchlässigkeit des Papiers mit dem erfindungsgemäßen plättchenförmigen Kalk mit 41,7 CU etwas geringer ist als diejenige des Papiers des Vergleichsbeispiels von 46,9 CU. Diese kleine Differenz an Luftdurchlässigkeit kann sehr einfach beispielsweise durch Veränderung der Mahlungsintensität des Zellstoffs ausgeglichen werden, und es ist zu erwarten, dass bei identischer Luftdurchlässigkeit die Steigerung in der Diffusionskapazität noch größer ausfällt. Wird nämlich die Diffusionskapäzität in der obenbeschriebenen Weise auf eine Luftdurchlässigkeit von 50 CU normiert, ergibt sich für das Vergleichsbeispiel eine normierte Diffusionskapazität
Ein nicht erfindungsgemäßes Zigarettenpapier bestehend aus Zellstofffasern aus 30,2 Gew.-% eines herkömmlichen nicht-plättchenförmigen gefällten Calciumcarbonats wurde als Vergleichsbeispiel hergestellt. Das Papier hatte ein Flächengewicht von 28,8 g/m2, eine Luftdurchlässigkeit von 60,6 CU und eine Diffusionskapazität von 1,84 cm/s, wiederum gemessen mit dem CO2 Diffusity Meter der Firma Sodim nach Konditionierung des Papiers gemäß ISO 187. Dies entspricht einem auf 50 CU normierten Wert von
Dieses Zigarettenpapier wurde abgewandelt, indem anstatt des herkömmlichen Calciumcarbonats wiederum eine Mischung aus Calcit und Vaterit mit plättchenförmiger Struktur verwendet wurde. Das modifizierte Zigarettenpapier hatte einen Füllstoffgehalt von 31,0 Gew.-%, ein Flächengewicht von 29,1 g/m2 und eine Luftdurchlässigkeit von 59,5 CU. Die Diffusionskapazität betrug 2,17 cm/s. Somit ließ sich bei fast identischen Papiereigenschaften eine Steigerung der Diffusionskapazität von 1,84 cm/s auf 2,17 cm/s, also um 17,9 % erzielen. Eine so hohe Diffusionskapazität, wie sie durch das erfindungsgemäße Papier nach Beispiel 2 erzielt wird, wäre bei herkömmlichen Zigarettenpapieren erst bei einer Luftdurchlässigkeit von etwa 85 CU zu erwarten. Die auf eine Luftdurchlässigkeit von 50 CU normierte Diffusionskapazität
Somit erlauben die erfindungsgemäßen Zigarettenpapiere eine erheblich verbesserte Diffusion von Kohlenmonoxid aus dem Tabakstrang einer mit diesem Papier gefertigten Zigarette, ohne dass die Luftdurchlässigkeit des Zigarettenpapiers geändert werden muss.Thus, the cigarette papers according to the invention allow a considerably improved diffusion of carbon monoxide from the tobacco rod of a cigarette made with this paper, without having to change the air permeability of the cigarette paper.
Claims (9)
- Cigarette paper, which contains pulp fibers and filler particles, whereby at least 20%, preferably at least 40%, particularly preferably at least 55% and particularly 70% of the filler particles, by mass or by particle number, have a flaked shape, wherein the flaked filler particles have a length 1, a width b and a thickness d, which correspond to the respective maximum extension in three mutually orthogonal spatial directions, whereby the length 1 as well as the width b are at least twice as large, preferably at least four times as large, as the thickness d, wherein the mass-specific median value d50 of the particle size distribution measured according to ISO 13317-3 is between 0.2 µm and 4.0 µm, preferably between 0.5 µm and 3.0 µm and wherein the flaked particles are formed by calcium carbonate.
- Cigarette paper according to claim 2, whereby 20 ≤ x ≤ 120 holds, preferably 30 ≤ x ≤ 100.
- Cigarette paper according to claim 1, whereby the calcium carbonate comprises a calcite, a vaterite or a mixture thereof.
- Cigarette paper according to claim 4, whereby the mixture consists of 50% by weight to 70% by weight calcite and 30% by weight to 50% by weight vaterite.
- Cigarette paper according to one of the preceding claims, wherein the entire filler content of the paper is between 10% by weight and 45% by weight, preferably between 20% by weight and 35% by weight.
- Cigarette paper according to one of the preceding claims, wherein the basis weight is between 10 g/m2 and 60 g/m2, preferably between 20 g/m2 and 35 g/m2.
- Cigarette paper according to one of the preceding claims, wherein the paper is treated in areas with burn-retardant substances, which are suitable for providing a cigarette manufactured from the paper with self-extinguishing properties.
- Cigarette, comprising a tobacco rod and a cigarette paper wrapping the tobacco rod, whereby the cigarette paper is a cigarette paper according to one of claims 1 to 8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL13724247T PL2761086T3 (en) | 2012-06-01 | 2013-05-17 | Cigarette paper comprising a lamellar filler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012104773A DE102012104773A1 (en) | 2012-06-01 | 2012-06-01 | Cigarette paper with platelet-shaped filler |
PCT/EP2013/060295 WO2013178492A1 (en) | 2012-06-01 | 2013-05-17 | Cigarette paper comprising a lamellar filler |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2761086A1 EP2761086A1 (en) | 2014-08-06 |
EP2761086B1 true EP2761086B1 (en) | 2015-01-28 |
Family
ID=48470968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13724247.5A Active EP2761086B1 (en) | 2012-06-01 | 2013-05-17 | Cigarette paper comprising a lamellar filler |
Country Status (12)
Country | Link |
---|---|
US (1) | US9775378B2 (en) |
EP (1) | EP2761086B1 (en) |
KR (1) | KR102070475B1 (en) |
CN (1) | CN104350204B (en) |
BR (1) | BR112014029802B1 (en) |
DE (1) | DE102012104773A1 (en) |
ES (1) | ES2535296T3 (en) |
MY (1) | MY167909A (en) |
PH (1) | PH12014502651B1 (en) |
PL (1) | PL2761086T3 (en) |
RU (1) | RU2636555C2 (en) |
WO (1) | WO2013178492A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013109386B3 (en) * | 2013-08-29 | 2015-01-15 | Delfortgroup Ag | Efficiently produced cigarette paper for self-extinguishing cigarettes, process for its preparation and a cigarette |
DE102013114012B3 (en) * | 2013-12-13 | 2014-12-11 | Delfortgroup Ag | Wrapping material for smoking articles with directional diffusion capacity |
DE102015105882B4 (en) * | 2015-04-17 | 2017-06-08 | Delfortgroup Ag | Wrapping paper with high short fiber content and smoking article |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2233064A1 (en) * | 1972-07-06 | 1974-01-24 | Hauni Werke Koerber & Co Kg | CUTTING DEVICE OF A STRANDING MACHINE IN THE TOBACCO PROCESSING INDUSTRY |
JPS6086067A (en) * | 1983-10-18 | 1985-05-15 | 奥多摩工業株式会社 | Manufacture of plate-like calcium hydroxide |
US5253660A (en) * | 1992-04-24 | 1993-10-19 | P. H. Glatfelter Company | Reduced sidestream smoke smoking article wrappers, methods of making such wrappers and smoking articles made from such wrappers |
US5888348A (en) * | 1996-11-14 | 1999-03-30 | Schweitzer-Mauduit International, Inc. | Method for controlling the permeability of a paper |
US6823872B2 (en) * | 1997-04-07 | 2004-11-30 | Schweitzer-Mauduit International, Inc. | Smoking article with reduced carbon monoxide delivery |
GB9712815D0 (en) * | 1997-06-19 | 1997-08-20 | British American Tobacco Co | Smoking article and smoking material therefor |
PT1270812E (en) * | 1999-12-27 | 2008-01-11 | Japan Tobacco Inc | Wrapping paper for cigarette reduced in scattering property of ash therefrom |
ATE270250T1 (en) | 2000-04-14 | 2004-07-15 | Schaefer Kalk | STABLE PLATE-SHAPED CALCITIC CALCIUM CARBONATE, METHOD FOR THE PRODUCTION THEREOF AND ITS USE |
GB0010736D0 (en) * | 2000-05-04 | 2000-06-28 | Cardinal Shopfitting & Systems | Post and socket assembly |
CN1292685C (en) * | 2000-11-13 | 2007-01-03 | 旋韦策-莫杜伊特国际公司 | Process for producing smoking articles with reduced proclivity characteristics and products made therefrom |
US6929013B2 (en) * | 2001-08-14 | 2005-08-16 | R. J. Reynolds Tobacco Company | Wrapping materials for smoking articles |
RU2246445C2 (en) * | 2002-06-05 | 2005-02-20 | Пойлов Владимир Зотович | Method of producing coarse chemically precipitated calcium carbonate with plate shape of particles |
US7077145B2 (en) * | 2002-12-20 | 2006-07-18 | R.J. Reynolds Tobacco Company | Equipment and methods for manufacturing cigarettes |
US7128887B2 (en) * | 2003-05-29 | 2006-10-31 | Specialty Minerals (Michigan) Inc. | Platy precipitated calcium carbonate synthesis method |
US7135157B2 (en) * | 2003-06-06 | 2006-11-14 | Specialty Minerals (Michigan) Inc. | Process for the production of platy precipitated calcium carbonates |
DE10351292A1 (en) * | 2003-10-31 | 2006-02-02 | Voith Paper Patent Gmbh | Method for loading a pulp suspension and arrangement for carrying out the method |
DE102004050960B4 (en) * | 2004-10-19 | 2008-07-24 | Glatz Feinpapiere Julius Glatz Gmbh | Smoking article wrapping material with improved carbon monoxide reduction properties |
KR20080072967A (en) | 2005-01-06 | 2008-08-07 | 니뽄 다바코 산교 가부시키가이샤 | Carbonaceous heat source composition for non-combustion smoking article |
CN101508454A (en) * | 2009-03-18 | 2009-08-19 | 山东大学 | Quasi-hexagonal sheet calcium carbonate metastable-state crystal particle and method of preparing the same |
DK2322581T3 (en) * | 2009-11-03 | 2015-12-07 | Omya Int Ag | A process for the preparation of hydromagnesite |
DE102010032814B4 (en) | 2010-07-30 | 2013-12-05 | Delfortgroup Ag | Cigarette paper with high diffusion capacity during thermal decomposition, cigarette, process for producing a cigarette paper and use of a water-soluble salt |
CN102094354B (en) * | 2010-12-06 | 2014-06-11 | 湖南中烟工业有限责任公司 | Method for modifying ash after cigarette burning |
-
2012
- 2012-06-01 DE DE102012104773A patent/DE102012104773A1/en not_active Withdrawn
-
2013
- 2013-05-17 WO PCT/EP2013/060295 patent/WO2013178492A1/en active Application Filing
- 2013-05-17 MY MYPI2014003228A patent/MY167909A/en unknown
- 2013-05-17 EP EP13724247.5A patent/EP2761086B1/en active Active
- 2013-05-17 PL PL13724247T patent/PL2761086T3/en unknown
- 2013-05-17 ES ES13724247.5T patent/ES2535296T3/en active Active
- 2013-05-17 BR BR112014029802-5A patent/BR112014029802B1/en active IP Right Grant
- 2013-05-17 KR KR1020147033241A patent/KR102070475B1/en active IP Right Grant
- 2013-05-17 RU RU2014148327A patent/RU2636555C2/en active
- 2013-05-17 CN CN201380028566.9A patent/CN104350204B/en active Active
-
2014
- 2014-11-25 US US14/552,714 patent/US9775378B2/en active Active
- 2014-11-27 PH PH12014502651A patent/PH12014502651B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
US9775378B2 (en) | 2017-10-03 |
DE102012104773A1 (en) | 2013-12-05 |
CN104350204A (en) | 2015-02-11 |
EP2761086A1 (en) | 2014-08-06 |
PH12014502651A1 (en) | 2015-01-21 |
BR112014029802B1 (en) | 2021-05-25 |
BR112014029802A2 (en) | 2019-10-01 |
MY167909A (en) | 2018-09-26 |
ES2535296T3 (en) | 2015-05-08 |
PL2761086T3 (en) | 2015-06-30 |
RU2636555C2 (en) | 2017-11-23 |
WO2013178492A1 (en) | 2013-12-05 |
US20150090284A1 (en) | 2015-04-02 |
KR20150024318A (en) | 2015-03-06 |
CN104350204B (en) | 2017-03-08 |
PH12014502651B1 (en) | 2015-01-21 |
RU2014148327A (en) | 2016-07-27 |
KR102070475B1 (en) | 2020-01-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2552253B1 (en) | Perforated cigarette paper | |
DE102009030546B3 (en) | Film-forming composition for application to cigarette paper, cigarette paper, cigarette and method for producing a cigarette paper | |
EP2761087B1 (en) | Cigarette paper with homogeneous visual impression | |
EP2804497B1 (en) | Paper filled with tobacco particles | |
EP2597975B1 (en) | Cigarette paper having a high diffusion capacity during thermal decomposition | |
EP3298198B1 (en) | Wrapping paper having transparent regions | |
EP0365882B1 (en) | Coaxial cigarette | |
EP2761086B1 (en) | Cigarette paper comprising a lamellar filler | |
EP2760297B1 (en) | Improved cigarette paper for self-extinguishing cigarettes | |
AT408501B (en) | FILTER CIGARETTE | |
DE102019100112B4 (en) | Biodegradable segment of a smoking article | |
EP2739781B1 (en) | Cigarette paper with filler having specific particle size distribution | |
DE4332019C2 (en) | Ventilated filter cigarette | |
DE3521279C2 (en) | ||
DE3246898A1 (en) | TOBACCO SMOKING FILTER | |
DE2737718C2 (en) | Smokable tobacco product | |
DE102022102066A1 (en) | SMOKING ARTICLE SEGMENT WITH CALENDED FIBRE WEB | |
WO2022175292A1 (en) | Improved wrapping paper having a low diffusion capacity | |
DE2431635A1 (en) | SMOKABLE PRODUCT WITH SEA FOAM PARTICLES AS ADSORBENS | |
DE1532123C (en) | Filter mouthpiece for cigarettes or similar smokers' articles | |
DE19512536A1 (en) | Cigarette type smoking product with paper-wrapped tobacco or finely cut bar | |
DE2263178A1 (en) | TOBACCO SMOKE FILTER |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20140502 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
DAX | Request for extension of the european patent (deleted) | ||
INTG | Intention to grant announced |
Effective date: 20141007 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: RO Ref legal event code: EPE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502013000347 Country of ref document: DE Effective date: 20150312 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 708304 Country of ref document: AT Kind code of ref document: T Effective date: 20150315 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2535296 Country of ref document: ES Kind code of ref document: T3 Effective date: 20150508 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150428 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150428 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150429 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150528 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502013000347 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
26N | No opposition filed |
Effective date: 20151029 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150517 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 4 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150517 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160531 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20130517 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200517 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20220518 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: RO Payment date: 20220509 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20220513 Year of fee payment: 10 Ref country code: PL Payment date: 20220509 Year of fee payment: 10 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230313 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230523 Year of fee payment: 11 Ref country code: ES Payment date: 20230613 Year of fee payment: 11 Ref country code: DE Payment date: 20230530 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20230519 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20230523 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20230601 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230517 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230601 |