EP3468810A1 - Method for applying register marks to wrapping paper for smoking articles - Google Patents
Method for applying register marks to wrapping paper for smoking articlesInfo
- Publication number
- EP3468810A1 EP3468810A1 EP18739534.8A EP18739534A EP3468810A1 EP 3468810 A1 EP3468810 A1 EP 3468810A1 EP 18739534 A EP18739534 A EP 18739534A EP 3468810 A1 EP3468810 A1 EP 3468810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wrapping paper
- paper
- markings
- wrapping
- structures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 105
- 230000000391 smoking effect Effects 0.000 title claims abstract description 103
- 238000002485 combustion reaction Methods 0.000 claims abstract description 38
- 230000005855 radiation Effects 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 235000019504 cigarettes Nutrition 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 21
- 238000004049 embossing Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 17
- 238000007639 printing Methods 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 239000000443 aerosol Substances 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000001508 potassium citrate Substances 0.000 claims description 4
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 4
- 235000015870 tripotassium citrate Nutrition 0.000 claims description 4
- 229920001131 Pulp (paper) Polymers 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000001509 sodium citrate Substances 0.000 claims description 3
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 3
- 229940038773 trisodium citrate Drugs 0.000 claims description 3
- JKRDADVRIYVCCY-UHFFFAOYSA-N 2-hydroxyoctanoic acid Chemical class CCCCCCC(O)C(O)=O JKRDADVRIYVCCY-UHFFFAOYSA-N 0.000 claims description 2
- 244000198134 Agave sisalana Species 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000018185 Betula X alpestris Nutrition 0.000 claims description 2
- 235000018212 Betula X uliginosa Nutrition 0.000 claims description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 244000025254 Cannabis sativa Species 0.000 claims description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical class [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 claims description 2
- 240000000491 Corchorus aestuans Species 0.000 claims description 2
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 2
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- 239000005696 Diammonium phosphate Substances 0.000 claims description 2
- 244000166124 Eucalyptus globulus Species 0.000 claims description 2
- 240000000731 Fagus sylvatica Species 0.000 claims description 2
- 235000010099 Fagus sylvatica Nutrition 0.000 claims description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical class OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 2
- 241000218652 Larix Species 0.000 claims description 2
- 235000005590 Larix decidua Nutrition 0.000 claims description 2
- 240000006240 Linum usitatissimum Species 0.000 claims description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 2
- 241001148717 Lygeum spartum Species 0.000 claims description 2
- 229920000433 Lyocell Polymers 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 241000218657 Picea Species 0.000 claims description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 2
- 241000018646 Pinus brutia Species 0.000 claims description 2
- 235000011613 Pinus brutia Nutrition 0.000 claims description 2
- 229920000297 Rayon Polymers 0.000 claims description 2
- 150000001242 acetic acid derivatives Chemical class 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 235000009120 camo Nutrition 0.000 claims description 2
- 235000005607 chanvre indien Nutrition 0.000 claims description 2
- 150000003841 chloride salts Chemical class 0.000 claims description 2
- 150000001860 citric acid derivatives Chemical class 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-L fumarate(2-) Chemical class [O-]C(=O)\C=C\C([O-])=O VZCYOOQTPOCHFL-OWOJBTEDSA-L 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 239000011487 hemp Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003893 lactate salts Chemical class 0.000 claims description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 150000004701 malic acid derivatives Chemical class 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 239000006012 monoammonium phosphate Substances 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 150000003891 oxalate salts Chemical class 0.000 claims description 2
- 235000021317 phosphate Nutrition 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 2
- 239000004627 regenerated cellulose Substances 0.000 claims description 2
- 150000003873 salicylate salts Chemical class 0.000 claims description 2
- 238000006748 scratching Methods 0.000 claims description 2
- 230000002393 scratching effect Effects 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 150000003890 succinate salts Chemical class 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 150000003892 tartrate salts Chemical class 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 239000003063 flame retardant Substances 0.000 claims 1
- 238000005470 impregnation Methods 0.000 claims 1
- 230000003252 repetitive effect Effects 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 description 16
- 238000001514 detection method Methods 0.000 description 15
- 241000208125 Nicotiana Species 0.000 description 7
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000000197 pyrolysis Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 108010068370 Glutens Proteins 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012757 flame retardant agent Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000021312 gluten Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/60—Final treatment of cigarettes, e.g. marking, printing, branding, decorating
- A24C5/601—Marking, printing or decorating cigarettes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/005—Treatment of cigarette paper
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C1/00—Elements of cigar manufacture
- A24C1/38—Final treatment of cigars, e.g. sorting
- A24C1/42—Marking, printing, or decorating cigars
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/005—Treatment of cigarette paper
- A24C5/007—Perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
Definitions
- the invention relates to a method for applying registration marks on wrapping paper for smoking articles, so that the influence of the register marks on the taste of a manufactured from the wrapping paper smoking article is minimized as possible by no or almost no substances are introduced into the wrapping paper, not even when smoking of the smoking article arise.
- a smoking article comprises a smokable material and a wrapping paper which wraps the smokable material to form a typically cylindrical strand.
- the smokable material is tobacco or other material that can generate an aerosol when exposed to heat and the wrapping paper is a cigarette paper.
- the smoking article may be a conventional cigarette that burns tobacco, but also a smoking article where the smokable material is merely heated to release an aerosol.
- the smoking article also includes a filter that can filter aerosol components and that is wrapped in a filter wrap paper, and a tipping paper that bonds the filter and the strand together.
- the wrapping paper has structures which repeat in the longitudinal direction of the strand.
- LIP smoking article inflammation control
- Some smoke article manufacturing machines are equipped with sensors that can detect structures on the wrapping paper and synchronize the cut of the endless strand with the structures so that the structures are at a nominally fixed position on the smoking article. For this, however, the structures must be able to be detected by means of a sensor at the usual processing speeds of such machines. If this is not the case, if it is not possible to detect the structures with reasonable economic outlay or not sufficiently quickly, it is possible to print markings, so-called register marks, on the wrapping paper, which are in a fixed position relative to the structures and simple and reliably detected with a sensor. The intersection of the endless strand is then synchronized with these printed register marks.
- lasers are also used to apply register marks to paper by having a laser beam burn the paper in a small area and darken it at a defined location.
- Such methods are described, for example, in WO 98/35096, WO 2007/122284 or WO 2011/026693.
- certain pigments in the paper or coatings are provided on the paper to achieve a good mark by a controlled color change, which is not possible with wrapping papers for smoking articles usually because of the legal requirements regarding the ingredients.
- the objective of the prior art methods is generally to produce a label that is as visible or detectable as possible without perforating the paper.
- An impairment of the taste of a smoking article by treatment with a laser is known, for example, in filter cigarettes, in which a perforation track in the circumferential direction in the region of the filter is generated by means of a laser.
- the laser perforates the tipping paper and the filter wrapper paper as intended, it also penetrates into the filter material so that vaporization and combustion products of the filter material remain in the filter and are perceived as irritating by the smoker on first draft.
- the present invention is therefore based on the object of specifying a method which makes it possible to generate register marks on the wrapping paper for a smoking article, so that the influence of these markings on the taste of a manufactured from the wrapping paper smoking article remains as low as possible.
- the inventors have found that, deviating from the prior art in which the visibility of the markers is paramount, the influence on the taste of the smoking article can be minimized by removing material from the wrapping paper, mechanically changing the wrapping paper, or if material is added, these are only substances that arise when smoking the smoking article and thus not adversely affect the taste.
- the method according to the invention for marking a wrapping paper for smoking articles thus comprises the steps
- a "fixed" distance is a predetermined distance that allows the position of a mark to be closed to the position of the structure.
- the inventive method in step (Bi) is based on the consideration that by removing material from the wrapping paper, in particular by removing material over the entire thickness of the wrapping paper, preferably by punching, perforating or cutting, changes in the wrapping paper are generated Register marks can be detected by suitable sensors. Particularly preferably, the change is at least one opening in the wrapping paper. In this case, only material is removed from the wrapping paper and thus avoided any influence on the taste of manufactured from the wrapping paper smoking article. In the design of the openings in the wrapping paper but is to pay particular attention to strength requirements of the subsequent processing steps.
- the inventive method in step (B.2) is based on the consideration that by mechanical treatment of the wrapping paper, in particular by embossing or compressing, markings are produced on the wrapping paper which can be detected by suitable sensors.
- the wrapping paper becomes more transparent by embossing or compressing at the points thus treated, and becomes darker with a suitable substrate, so that detection is possible. Again, no substances are added to the wrapping paper, and any influence on the taste of the smoking article made from the wrapping paper is avoided. It is also in the design of the markers to take into account the strength properties of the wrapping paper, but less than in the production of openings.
- step (B.3) is based on the consideration that by treating the surface of the wrapping paper with laser radiation, components of the wrapping paper are changed in color by pyrolysis or combustion so that this change can be easily detected with suitable sensors. In general, the thus treated areas of the wrapping paper will appear darker than the wrapping paper.
- This further inventive step is based on the consideration that smoking or heating of the smoking article in the wrapping paper produces pyrolysis or combustion products which the smoker absorbs when smoking and which adds to the flavor of the smoking article.
- enthalpy of combustion is released, which is released to the environment in part, for example by heat radiation, heat conduction or convection, but partly also maintains the glow process by being conducted in the wrapping paper.
- the wrapping paper when smoking the smoking article, the wrapping paper is incompletely burned so that it does not release all of the enthalpy of combustion, such as may be measured in a calorimeter.
- energy can also be introduced into the wrapping paper by the smokable material.
- the energy introduced by the laser it has to be taken into consideration that during treatment with the laser only the surface is thermally stressed while smoking the smoke article, the entire mass of the wrapping paper is thermally degraded. Furthermore, the duration of thermal exposure to the laser is much shorter than when smoking the smoking article. Also, not all the laser radiation is absorbed by the wrapping paper, but a part is reflected and a part penetrates the wrapping paper.
- FIG. 1 shows the principle of the invention.
- structures 7 which are either on the wrapping paper 1 provided in step (A) already present, or applied according to step (C).
- To synchronize the paper run marks 2 are generated on the wrapping paper, so that each mark 2 is located in the machine direction at a fixed distance 8 relative to each of the structures 7.
- the wrapping paper for smoking articles provided in step (A) of the method of the invention comprises pulp fibers.
- the pulp fibers are required because they give the wrapping paper the necessary strength.
- the pulp fibers are preferably wood pulp fibers, more preferably long fiber pulp, such as spruce, pine or larch, or short fiber pulp, such as birch, beech or eucalyptus and mixtures thereof.
- the pulp fibers are partially or wholly other than plants such as flax, hemp, sisal, jute, abaca, cotton, esparto grass, or mixtures thereof.
- the wrapping paper can also contain pulp fibers of regenerated cellulose, such as lyocell fibers, viscose fibers or modal fibers, for example.
- pulp fibers of regenerated cellulose such as lyocell fibers, viscose fibers or modal fibers, for example.
- legal requirements concerning the ingredients of a wrapping paper for smoking articles must be observed.
- the wrapping paper preferably contains at least 50% by weight, particularly preferably at least 60% by weight, very particularly preferably at least 70% by weight of cellulose fibers and preferably at most 100% by weight, particularly preferably at most 80% by weight of pulp fibers. The percentages are based on the total mass of the wrapping paper.
- the wrapping paper may contain filler.
- the filler is preferably an oxide, hydroxide, carbonate, bicarbonate or silicate or a mixture thereof. Particularly preferred is calcium carbonate, in particular precipitated calcium carbonate.
- Other fillers which may find preference in smoking article wrapping papers are magnesium oxide, magnesium hydroxide, aluminum hydroxide, titanium dioxide, talc and kaolin, or mixtures thereof.
- special fillers can also be used which irreversibly change their color when exposed to laser radiation and thus contribute to the visibility of the marking, for example iron oxides.
- the legal provisions regarding the ingredients of the wrapping paper for smoking articles must be observed.
- the wrapping paper provided in step (A) of the process preferably contains at least 10% by weight, in particular at least 20% by weight and preferably at most 50% by weight, more preferably at most 40% by weight and most preferably at most 35% by weight .- of the filler.
- the percentages refer to the total mass of the wrapper. development papiers.
- the wrapping paper for smoking articles contains no filler. This alternative embodiment is particularly preferred when the roll-your-own wrapping paper is to be used.
- the wrapping paper may also contain at least one fire salt, which increase or reduce the smoldering speed of the smoking article or the appearance of the ashes of the burnt tobacco together with the burnt wrapping paper. Since Brandsalze often influence the thermal degradation of the wrapping paper and thus the enthalpy of combustion, they also play a role in the choice of the energy density of the laser radiation in step (B.3).
- the wrapping paper therefore preferably comprises one or more brand salts selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates, fumarates, gluconates, glycolates, lactates, oxalates, salicylates, ⁇ -hydroxycaprylates, phosphates, chlorides and bicarbonates, preferably selected from the group consisting of trisodium citrate, tripotassium citrate and mixtures thereof.
- the wrapping paper may also contain substances selected from the group consisting of sodium chloride, magnesium chloride, calcium chloride, monoammonium phosphate, diammonium phosphate, boric acid and mixtures thereof.
- the content of brominating salts in the wrapping paper is preferably at least 0.5% by weight, particularly preferably at least 0.7% by weight, very particularly preferably at least 1.0% by weight and / or at most 7.0% by weight, more preferably at most 5.0% by weight and most preferably at most 3.0% by weight.
- the wrapping paper for smoking articles contains no burn salts. This embodiment is particularly preferred when the wrapping paper is to be used for manually-made smoking articles ("roll-your-own").
- the wrapping paper may contain other components known in the art. These include, for example, dyes, pigments, flavorings or inorganic fibers, such as glass fibers. However, the use of such substances is restricted in many countries by legal regulations.
- the basis weight of the wrapping paper is important to the process of the invention because it substantially determines the mechanical strength of the wrapping paper and affects the design of step (B).
- the wrapping paper for the process according to the invention in preferred embodiments has a basis weight between 10 g / m 2 and loo g / m 2 , preferably between 20 g / m 2 and 50 g / m 2 and more preferably between 25 g / m 2 and 35 g / m 2 .
- the basis weight of the wrapping paper can be determined according to ISO 536: 2012.
- the thickness of the wrapping paper also plays a role in the process according to the invention.
- the thickness of the wrapping paper is in preferred embodiments between 15 ⁇ and 100 ⁇ , preferably between 30 ⁇ and 60 ⁇ and most preferably between 40 ⁇ and 50 ⁇ .
- the thickness of the wrapping paper can be determined on a single layer according to ISO 534: 2011.
- the wrapping paper have regularly repeating structures in the machine direction, so that it is necessary to apply marks in a fixed relative position to any structure used in later processing steps to synchronize processing steps with the travel of the wrapping paper can.
- step (C) can be added to the wrapping paper as in step (C) according to a variant of the method according to the invention after the application of the markers, or according to an alternative variant of the inventive method already be present on the wrapping paper provided in step (A).
- the invention is not limited to any particular type of structures. These may be, for example, printed, embossed or stamped features on the wrapping paper which are to appear in a fixed position on the smoking article made from this wrapping paper. Likewise, it may be watermarks, sieve marks or limescale.
- the type of structures is not limited to optically perceptible features, but may also include functional features. These include, for example, tapes printed on the wrapping paper and used to self-extinguish a smoking article made therefrom, or perforations serving to dilute the aerosol flowing through the smoking article, as described in WO 2011/120687.
- the structures may be that the composition of the wrapping paper varies in the machine direction in a regular manner, in particular with respect to the content of brand salts, as described in WO 2014/202319.
- the inventive method can be used when the structures for sensors can not be detected or only with great effort.
- the production of the structures on the wrapping paper in step (C) or in a step upstream of step (A) may thus preferably include printing, embossing, perforating, stamping, impregnating, impregnating, coating or spraying.
- the structures are repeating regularly in the machine direction, whereby the machine direction is to be understood as meaning the direction in which the wrapping paper moves in that further processing step which requires synchronization with the structures on the wrapping paper.
- the wrapping paper is in the form of an elongate web. and the "machine direction" corresponds to the longitudinal direction of this web.
- the step (B.i) of the method according to the invention can preferably be designed so that material is removed over the entire thickness of the wrapping paper and therefore at least one opening in the wrapping paper is produced.
- the at least one opening is produced by punching, perforating or cutting.
- Less preferred, but also in the sense of the method according to the invention, is the superficial removal of material from the wrapping paper, for example by grinding or scratching, so that although the transparency of the wrapping paper is increased in this area, but no opening is formed.
- step (Bi) is realized by perforation or cutting, preferably mechanical perforation or cutting tools or a laser can be used, more preferably this step is performed by a C0 2 laser.
- the transverse direction refers to the direction orthogonal to the machine direction
- the radius of curvature of the transversely outermost boundary is at least 0.1 mm, preferably at least 0.2 mm and more preferably at least 0.5 mm
- Machine direction tensile stresses can be effectively reduced at these extreme limits, since such stress peaks can easily lead to the wrapping paper being torn off during further processing and can reduce productivity, Since the transversely extreme outermost boundaries of the marking can also be straight lines, the radius of curvature can be arbitrarily high his.
- FIG. 2 shows a wrapping paper 1 with markings 2, which are designed, for example, as elliptical openings in the wrapping paper.
- the machine direction of the wrapping paper is indicated by arrow 3, while the transverse direction indicated by arrow 4 is substantially orthogonal thereto.
- the transversely outermost boundary 5 of the lining 2 is shown enlarged, and the radius of curvature of the transversely outermost boundary 5 designated R is shown.
- the marking is a circular opening with a diameter of at least 0.3 mm and at most 2.0 mm, preferably of at least 0.5 mm and at most 1.5 mm.
- the step (B.2) of the method according to the invention can preferably be designed so that the mechanical treatment involves embossing or compressing the wrapping paper.
- the wrapping paper is compressed in one area, so that the transparency increases locally.
- the mark is then detectable over the untreated wrapping paper as a dark area for sensors.
- embossing or compression of the wrapping paper may be accomplished by applying mechanical pressure between two patterned rollers which create a mark in the wrapping paper.
- the line force for embossing the wrapping paper is important to the process of the invention.
- the line force for embossing the wrapping paper for smoking articles is 70 N / mm to 130 N / mm, more preferably 80 N / mm to 120 N / mm, and most preferably 90 N / mm to 115 N / mm.
- this line force one achieves embossing that can be easily detected by optical sensors, but does not appreciably reduce the tensile strength of the wrapping paper.
- the moisture content of the paper is also important for the embossing result in the process according to the invention.
- the embossing is preferably carried out at an increased moisture content of the paper from 5% by weight to 10% by weight and more preferably from 7% by weight to 9% by weight, the percentages being based on the mass of the wrapper paper. With this increased humidity, the embossing provides a clear visible marking, which can then also be detected automatically more easily.
- a further preferred embodiment of this method step is the production of markings in the region of the press section of the paper machine during the production of the wrapping paper, that is to say on the wrapping paper which has not yet been "completely finished”
- an embossing process may be used which is very similar to the previously described embossing process on the finished wrapping paper, except that the moisture content of the wrapping paper in the press section is higher than in the fully finished wrapping paper.
- a cylinder provided with a corresponding pattern can also be used here.
- An alternative embodiment of this method step comprises creating markings by corresponding devices on the screen of the paper machine in the production of the wrapping paper in the same way that watermarks on papers can be made.
- the step (B.3) of the method according to the invention can preferably be designed such that it comprises the following substeps:
- step (B3.2) marking the wrapping paper using laser radiation of the energy density selected in step (B3.1) so that regularly repeating machine direction markings are produced on the wrapping paper.
- step (B3.1) of the method according to the invention For the selection of the energy density of the laser radiation in step (B3.1) of the method according to the invention based on the enthalpy of combustion per volume of the wrapping paper, it is advantageous, but not necessary, if the combustion enthalpy of the wrapping paper is known.
- the combustion enthalpy of the wrapping paper can be determined, for example, by measurement with a calorimeter, in particular with a reaction calorimeter.
- the components of the wrapping paper are substances whose combustion enthalpies are known with sufficient accuracy, so that the combustion enthalpy can also be calculated from the known composition of the wrapping paper. Such exemplary calculations will be described below.
- step (B3.1) it is then no longer necessary to determine the combustion enthalpy itself numerically, but one will be able to derive directly from the composition of the wrapping paper and from other properties, in particular the thickness and the basis weight, to set a suitable energy density for the laser radiation.
- step (B3.1) of the preferred method according to the invention methods should also be included in which the enthalpy of combustion is not determined explicitly, but quantities for selecting the energy density are used, which are the combustion enthalpy significantly influence. These quantities are in particular the substances used in the wrapping paper, their quantity, the basis weight or the thickness of the wrapping paper.
- the interval [ x 0 , xj is so large that it contains that interval as a subset, which is spanned by the highest combustion enthalpy and the highest combustion enthalpy, in each case per volume of the wrapping paper, of those wrapping papers to which the method according to the invention is to be applied.
- the enthalpy of combustion per volume of the wrapping paper in J-nr ⁇ nr 1 is to be used, and the energy density of the laser radiation is obtained in J-nr 2 .
- the laser radiation used in step (B.3) of the inventive method for marking the wrapping paper has one or more wavelengths which are of importance for the energy density required for the marking.
- the wrapping paper should absorb the one or more wavelengths of the laser radiation substantially well.
- a wavelength of at least 8 ⁇ and at most 12 microns is preferred, and very particularly preferred is laser radiation having a wavelength of about 10.6 ⁇ , which is generated by a C0 2 laser.
- the use of other sources for the laser radiation is likewise possible in the method according to the invention.
- the power of the laser radiation can vary within a wide range and, in addition to the required energy density, depends above all on the area which, per unit of time, depends on the laser beam. Radiation should be treated. The skilled person will be able to determine a suitable power of the laser. An example for calculating the relationship between energy density and the required power of the laser radiation is given below.
- the markings produced on the wrapping paper in step (B) of the method according to the invention should be designed such that they can be reliably detected by simple optical sensors, in particular those which detect brightness differences. For this it is helpful if the markers differ sufficiently clearly in their color or whiteness from the rest of the wrapping paper, and if the wrapping paper itself otherwise has no structures that could confound the sensor with the markings. If the marking is an opening in the wrapping paper, the substrate must be colored differently from the wrapping paper in the area of the sensor, or a transmittance sensor (photocell) must be used.
- Markings produced on conventional white wrapping papers for smoking articles according to one of the method steps (B.2), or (B.3) are preferably continuous or broken lines in the transverse direction, that is to say in an at least approximately right angle to the machine direction as defined above.
- marker patterns such as circles, triangles, squares, or other geometric shapes may also be used.
- the extent of the machine direction mark is relevant to the method of the invention because its extent is important for reliable detection.
- the wrapping paper reaches speeds of up to 10 m / s.
- the mark should be at least 1 ⁇ under the sensor to ensure reliable detection so that the mark should have a machine direction extension at least at least 0.01 mm.
- the extension in the machine direction at at least one point of the marking is preferably at least 0.10 mm and very particularly preferably at least 0.20 mm.
- the marking itself should be as little as possible visible on the smoking article.
- the extension of the mark in the machine direction should therefore be at most 5.00 mm, preferably at most 3.00 mm and very particularly preferably at most 1.00 mm.
- the marking may extend transversely across the entire width of the wrapping paper .
- the minimum extension of the mark in the transverse direction is determined by the ability of the sensor used to reliably detect the mark, and also depends on how accurately and how stably the wrapper paper can be guided under the detection surface of the sensor.
- the extent of the marking in the transverse direction is therefore preferably at least 0.20 mm, particularly preferably at least 0.50 mm and very particularly preferably at least 1.00 mm.
- the markings have been produced on a wide roll of wrapping paper which is later to be cut into narrower rolls, it is expedient to arrange the markings on the wrapping paper in such a way that there is at least one marking in the width direction on each of the narrow rolls. As a result, the markings can also be detected on subsequent individual processing steps on the individual narrow rollers.
- the transverse dimension should be as small as possible.
- the expansion of the marking in the transverse direction is therefore preferably at least 0.20 mm, particularly preferably at least 0.50 mm and very particularly preferably at least 1.00 mm, and preferably at most 5.00 mm, particularly preferably at most 4.00 mm and most preferably at most 3.00 mm. If such markings are produced on a wide roll of wrapping paper which is later cut into narrower rolls, it is expedient to arrange the markings on the wrapping paper such that at least one mark is present on each of the narrow rolls in the transverse direction.
- the markings can also be detected on subsequent individual processing steps on the individual narrow rollers.
- the extent of the markings in the transverse direction is then preferably at most one third, more preferably at most one fifth, and most preferably at most one tenth of the width of the narrow roll.
- the mark may be on the wrapping paper on any side of the wrapping paper.
- the stain is produced on the wrapping paper, one will create the stain on that side of the wrapping paper where it can be more easily detected in the subsequent processing step.
- this is preferably that side of the wrapping paper that is on the smoking article outside.
- This side of the wrapping paper is preferably the side facing away from the strainer in the manufacture of the wrapping paper on the paper machine and referred to as the top, while the strainer side is the side facing the strainer and typically faces the smokable material on the smoking article ,
- the opening can be made from either side or from both sides.
- each mark is basically arbitrary, as long as it is ensured that it is in a uniform and fixed distance for all marks in the machine direction to at least one structure on the wrapping paper. This distance must be known, so that in the subsequent processing step from the position of the mark on the position of the structure on the wrapping paper can be closed. More preferably, the position of the markers relative to the structures on the wrapping paper is selected so that the markings are not visible during normal use of the smoking article made from the wrapping paper. This may mean for filter cigarettes that the marks are positioned on the wrapping paper so that they are on the filter cigarette in the area where the tipping paper overlaps the strand of smokable material to cover the marks on the wrapping paper.
- step (A) the wrapping paper may first be manufactured and rolled up on a conventional paper machine.
- step (B) the wrapping paper is unrolled again, the markings are produced on the wrapping paper in step (B), and the wrapping paper thus marked is rolled up again.
- step (Ci) the structures are then applied to the marked wrapping paper in step (Ci). It is also conceivable and preferred in certain applications to carry out steps (B) and (C) on the same device.
- the device may be a printing press or coating machine in which the markings are first produced, step (B), and then the structures are applied in the same device, step (C).
- the marking unit performing step (B) and the device for applying the structures according to step (C) a register control known from the prior art which uses the markings detected by a sensor Positions of the marks and the structures to be applied synchronized with each other.
- This synchronization may mean compensating for the change in length of the wrapping paper during the paper pass through the device.
- embossing machines, punching machines or perforating a device for applying structures on wrapping papers for smoking articles is also described in WO 2010/124879.
- the markings may then be detected by suitable sensors, and the usually continuous strand of smokable material encased in the wrapping paper may be cut at a location synchronized with the markings such that the structures have a fixed position on the body Take a smoking article.
- the roll of wrapping paper is cut into small leaflets so that they are suitable for the manual production of smoking articles ("roll-your-own") .
- the markings are detected on this machine and the cutting in leaflets synchronized with the markers, so that the structures are at a fixed position on the sheet and therefore also at a fixed position on the smoking article made from the leaflet.
- steps (A) and (B) are preferably carried out on the same apparatus.
- This variant of the method therefore provides that the wrapping paper already has structures and the markings are subsequently produced.
- the markers In order for the markers to be in a fixed position relative to the structures, it is necessary to align the structures detect.
- the sensors for detecting the structures are complex and the detection is possible only at low speeds, for example if the structures are poorly visible or exist in a variable composition of the wrapping paper. In these cases, the method can be used advantageously.
- the wrapping paper initially has a broad role and is later cut into a plurality of narrower rolls, so-called bobbins, for making the smoking articles.
- the elaborate detection of the structures and the corresponding marking of the wrapping paper take place on a wide roll at low speed, whereas on the machines for producing smoking articles only a comparatively simple sensor system is needed to detect the markings instead of the structures high processing speeds can be achieved and costly sensor technology is saved.
- the method can be used when the smoking article making machine is a cigarette machine and the later processing step is cutting an endless strand of smokable material wrapped in the wrapping paper.
- any intermediate steps may be carried out, as required for the production of the wrapping paper for smoking articles.
- FIG. 1 shows a wrapping paper on which structures and markings are applied.
- FIG. 2 shows a wrapping paper on which markings in the form of openings are formed.
- FIG. 3 illustrates the production of a wrapping paper by means of a paper machine, as well as a possible formation of markings in its wire section or press section.
- FIG. 4 illustrates a process in which markings and in the same device
- Structures are formed on a wrapping paper.
- Figure 5 illustrates a process in which a provided wrapping paper already
- FIG. 6 illustrates a similar process to FIG. 5 that lends itself when
- Markers can be formed regardless of the running of the wrapping paper.
- FIG. 3 shows the production of the wrapping paper 150 according to the invention by means of a paper machine running in the machine direction 151.
- the paper machine comprises a headbox area 100, a wire section 110, a press section 120, a dryer section 130 and a reel 140.
- an aqueous fiber suspension or fiber / filler suspension flows onto a rotating screen 111 on which by dewatering a wrapping paper 150 is formed.
- the wrapping paper 150 then passes through a press section 120 in which pressure is applied to the wrapping paper 150 through roller pairs 121 typically provided with a felt, thereby further dewatering the wrapping paper 150.
- the wrapping paper 150 passes through the dryer section 130 where it is contacted with at least one, but preferably a plurality of heated drying cylinders 131 and the water is removed by evaporation so that the wrapping paper 150 reaches a moisture content of 3% to 10%. Finally, the wrapping paper 150 is rolled up on a roll 141.
- a patterned cylinder 112 in the wire section 110 of FIG Paper machine can be provided which exerts pressure on the still moist wrapping paper 150 and so displaces the material in the wrapping paper 150 and generates a pattern with higher transparency.
- the roller pair is the last pair of rollers in the machine direction in the press section.
- FIG. 4 shows an exemplary production process of the wrapping paper according to the invention, in which, in the inventive step (A), a wrapping paper 200 which does not yet have any structures is provided on a roll 201 and runs in the machine direction 208.
- a marking unit 202 markings are produced on the wrapping paper 200 in step (B).
- the marking unit 202 is formed by a laser, with whose laser radiation the wrapping paper 200 is treated in a step (B.3).
- a detection unit 205 for example an optical sensor, detects the markings generated by the marking unit 202 and influences register control so that the structures produced by a device 206 on the wrapping paper 200 are at a fixed distance from the markings.
- the device 206 may be a printing device that is used to print self-extinguishing tapes on the wrapping paper 200.
- the register control can take place by a deflecting roller 203 which can be moved in the direction of the arrow 204 and which lengthens or shortens the length of the web between the marking unit 202 and the apparatus 206 and thus positions the markings and the structures relative to one another.
- the detection unit 205 may also be provided behind the device 206, as shown in dashed lines in Fig. 4, because then the relative position of marks and structures on the wrapping paper 200 to each other can be determined directly and a regulation of the relative position is possible.
- the wrapping paper 200 is rolled up on a roll 207.
- FIG. 5 shows an exemplary production process according to the invention in which the wrapping paper provided in step (A) already has structures.
- the wrapping paper 300 is thereby provided on a roll 301 and first passes in the machine direction 308 a register control, in which, for example by means of a movable in the direction of arrow 304 deflection roller 303, the length of the paper web between the roller 301 and a marking unit 302 (in the embodiment shown again Laser) can be lengthened or shortened so that the markings produced by the marking unit 302 mark exactly at a fixed distance relative to those on the wrapping paper 300th existing structures are located.
- a register control in which, for example by means of a movable in the direction of arrow 304 deflection roller 303, the length of the paper web between the roller 301 and a marking unit 302 (in the embodiment shown again Laser) can be lengthened or shortened so that the markings produced by the marking unit 302 mark exactly at a fixed distance relative to those on the wrapping paper 300th existing structures are located.
- a detection unit 305 which may be arranged in front of or behind the marking unit, detects at least the structures and influences the position of the deflection roller 303 in such a way that a fixed distance between markings and structures is produced on the wrapping paper 300.
- the detection unit 305 is arranged behind the marking unit 302, because at this position both the markings and the structures can be detected and their relative position to each other can be directly determined and thus regulated. If the detection unit 305 is arranged in front of the marking unit 302, the distance between the detection unit 305 and the marking unit 302 is preferably as small as possible.
- the wrapping paper 300 is rolled up on a roll 307.
- FIG. 6 shows a further exemplary embodiment of the production process according to the invention.
- a wrapping paper 400 which already has structures, is provided in the form of a roll 401 and traverses the process in the machine direction 408.
- This exemplary embodiment is preferably used when the generation of markings by the marking unit 402 can be triggered independently of the course of the wrapping paper. This will preferably be possible with a marking by means of laser according to step (B.3).
- the detection unit 405 can preferably also be arranged behind the marking unit 402, so that the relative position of markings and structures can be determined directly relative to each other and thus a regulation of this position is possible.
- the wrapping paper 400 is rolled up on a roll 407.
- a first step (A) of the process according to the invention four different wrapping papers were provided with the data from Table 1 using calcium carbonate precipitated in addition to pulp fibers as filler and tripotassium citrate or mixtures of trisodium citrate and tripotassium citrate as firing salt.
- the papers were produced on a conventional long-sifting paper machine, as shown schematically and greatly simplified in FIG. Table 1 - Data of wrapping papers
- a roll having a width of 106 mm was cut from each wrapping paper, and marks were made on a punching device.
- the markings were circular openings with a diameter of 0.5 mm.
- Several such apertures were juxtaposed transversely, with the midpoint of the first aperture seen transversely from the edge at a distance of 13.25 mm from the edge and the midpoint of each further aperture away from the transverse aperture, 26.5 mm.
- the roll was then cut into bobbins 26.5 mm wide, as is customary for the production of cigarettes with a diameter of about 8 mm. As a result, the openings were positioned centrally on each bobbin in the transverse direction.
- the repetition rate of the machine direction openings was adapted to the specific manufacturing process of cigarettes.
- filter cigarettes were subsequently manufactured with a tobacco rod with a length of 54 mm.
- the tobacco rod was first cut into pieces with a length of 54 mm. The pieces were separated in the longitudinal direction and inserted between each two such pieces a double-length cigarette filter. A double wide tipping paper was glued around the filter and a portion of each of the two tobacco rod pieces to form a double cigarette connected at the mouth end. In the last step, the double cigarette was cut in the middle.
- each of the wrapping papers was given a 0.25 mm wide continuous line. Because of the higher thickness of the wrapping paper P2, a higher force of about 115 N / mm could be set than with the papers ⁇ , P3 and P4, in which the line force for embossing was about 90 N / mm to 100 N / mm.
- a higher moisture content of the wrapping paper of 5% by weight to 10% by weight, based on the mass of the wrapping paper, was chosen, because then the embossing was more clearly visible and easier to detect.
- a dot pattern was also marked on similar line forces.
- the enthalpy of complete combustion of the wrapping papers can be estimated by multiplying and summing up the mass per unit area in the wrapping paper with the enthalpy per mass for all components, the citrate content of Table 1 being converted into the content of citric acid , The enthalpy per area thus obtained was divided by the thickness. The results are shown in Table 3. Table 3 - Estimated combustion enthalpies of wrapping papers
- the marking of the papers was carried out with a C0 2 laser with a nominal power of 25 W, which can produce a continuous laser beam with a wavelength of 9.2 ⁇ to 10.9 ⁇ .
- the laser was operated at 70% of its rated power, ie 17.5 W.
- the marking pattern was a continuous line in the transverse direction of the wrapping paper having a width of 0.25 mm, which was produced at different speeds of 1 m / s to 7 m / s on the papers Pi, P2, P3 and P4. From these technical data, the theoretical energy densities given in Table 4 arithmetically obtained by dividing the laser power (17.5 W) by the speed and the line width.
- the wrapping papers were examined for their suitability for the manufacture of smoking products and their influence on the taste of a smoking article.
- the mark was sufficiently strong in all experiments to reliably detect the mark on the machine-direction wrapping paper with a simple sensor, they were no longer so strong at marking speeds of 6 m / s and 7 m / s that the mark was reliably detectable even at a wrapping paper running at high speed in the machine direction. Therefore, k should not exceed the value -l ⁇ and preferably be less than -2 ⁇ .
- the values for k can also be significantly smaller than -12 ⁇ .
- the value of k should preferably not be less than -8 ⁇ m, preferably it should not fall below -7 ⁇ m and very particularly preferably it should not fall below -6.5 ⁇ m.
- the value for k should preferably not be higher than -1 ⁇ , particularly preferably not higher than -2 ⁇ , most preferably not higher than -2.5 ⁇ .
- marking speeds 2 m / s to 3 m / s, ie a value of k from -5.0 ⁇ to -4.0 ⁇ .
- y f (x) by including further paper parameters, such as air permeability, transparency or whiteness.
- step (C) of FIG provided inventive method.
Abstract
Description
Claims
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PL18739534T PL3468810T3 (en) | 2017-08-29 | 2018-07-10 | Method for applying register marks to wrapping paper for smoking articles |
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DE102017119819.9A DE102017119819A1 (en) | 2017-08-29 | 2017-08-29 | Method for applying registration marks on wrapping paper for smoking articles |
PCT/EP2018/068645 WO2019042639A1 (en) | 2017-08-29 | 2018-07-10 | Method for applying register marks to wrapping paper for smoking articles |
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EP (1) | EP3468810B1 (en) |
JP (1) | JP7301812B2 (en) |
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WO2023041586A1 (en) * | 2021-09-20 | 2023-03-23 | Jt International Sa | Laser-etched aerosol-generating article wrapper, aerosol-generating articles comprising such, and their method of manufacture |
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DE102012106154B4 (en) * | 2012-07-09 | 2014-06-12 | Delfortgroup Ag | Cigarette paper with improved air permeability, cigarette and method for producing a cigarette paper |
CN203341000U (en) * | 2013-05-10 | 2013-12-18 | 江苏瑞驰机电科技有限公司 | Cigarette rolling device used for online laser boring of cigarette |
DE102013106516B3 (en) | 2013-06-21 | 2014-10-09 | Delfortgroup Ag | CIGARETTE PAPER GIVING A CIGARETTE AN EQUAL TRAIN PROFILE |
-
2017
- 2017-08-29 DE DE102017119819.9A patent/DE102017119819A1/en not_active Ceased
-
2018
- 2018-07-10 JP JP2020512492A patent/JP7301812B2/en active Active
- 2018-07-10 US US16/643,499 patent/US11241033B2/en active Active
- 2018-07-10 KR KR1020207008464A patent/KR20200045521A/en not_active Application Discontinuation
- 2018-07-10 CN CN201880053527.7A patent/CN111051070B/en active Active
- 2018-07-10 EP EP18739534.8A patent/EP3468810B1/en active Active
- 2018-07-10 ES ES18739534T patent/ES2809976T3/en active Active
- 2018-07-10 PL PL18739534T patent/PL3468810T3/en unknown
- 2018-07-10 WO PCT/EP2018/068645 patent/WO2019042639A1/en unknown
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2020
- 2020-02-26 PH PH12020500378A patent/PH12020500378A1/en unknown
Also Published As
Publication number | Publication date |
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WO2019042639A1 (en) | 2019-03-07 |
CN111051070B (en) | 2021-07-27 |
PL3468810T3 (en) | 2020-10-05 |
CN111051070A (en) | 2020-04-21 |
JP7301812B2 (en) | 2023-07-03 |
EP3468810B1 (en) | 2020-04-29 |
KR20200045521A (en) | 2020-05-04 |
ES2809976T3 (en) | 2021-03-08 |
US11241033B2 (en) | 2022-02-08 |
PH12020500378A1 (en) | 2020-12-07 |
JP2020531708A (en) | 2020-11-05 |
US20200187553A1 (en) | 2020-06-18 |
BR112020001810A2 (en) | 2020-07-21 |
DE102017119819A1 (en) | 2019-02-28 |
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