EP3048906B1 - Coating method - Google Patents
Coating method Download PDFInfo
- Publication number
- EP3048906B1 EP3048906B1 EP14824344.7A EP14824344A EP3048906B1 EP 3048906 B1 EP3048906 B1 EP 3048906B1 EP 14824344 A EP14824344 A EP 14824344A EP 3048906 B1 EP3048906 B1 EP 3048906B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- paper
- cigarette
- liquid
- wrapping material
- 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
- 238000000576 coating method Methods 0.000 title claims description 198
- 239000000123 paper Substances 0.000 claims description 164
- 239000011248 coating agent Substances 0.000 claims description 140
- 239000000463 material Substances 0.000 claims description 56
- 235000019504 cigarettes Nutrition 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 50
- 239000000126 substance Substances 0.000 claims description 32
- 238000012360 testing method Methods 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000004922 lacquer Substances 0.000 claims description 23
- 230000000391 smoking effect Effects 0.000 claims description 20
- 239000011159 matrix material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 241000208125 Nicotiana Species 0.000 claims description 12
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000007639 printing Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 9
- 239000011087 paperboard Substances 0.000 claims description 9
- 229920001800 Shellac Polymers 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims description 8
- 239000004208 shellac Substances 0.000 claims description 8
- 229940113147 shellac Drugs 0.000 claims description 8
- 235000013874 shellac Nutrition 0.000 claims description 8
- 239000000020 Nitrocellulose Substances 0.000 claims description 7
- 239000002775 capsule Substances 0.000 claims description 7
- 229920001220 nitrocellulos Polymers 0.000 claims description 7
- NJVOHKFLBKQLIZ-UHFFFAOYSA-N (2-ethenylphenyl) prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1C=C NJVOHKFLBKQLIZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001856 Ethyl cellulose Substances 0.000 claims description 6
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 6
- 239000011111 cardboard Substances 0.000 claims description 6
- 229920001249 ethyl cellulose Polymers 0.000 claims description 6
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 6
- 239000000796 flavoring agent Substances 0.000 claims description 6
- 235000019634 flavors Nutrition 0.000 claims description 6
- 239000005871 repellent Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 230000001476 alcoholic effect Effects 0.000 claims description 4
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- 230000000704 physical effect Effects 0.000 claims description 4
- 239000001993 wax Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 3
- 230000002940 repellent Effects 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 239000003925 fat Substances 0.000 claims description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 239000011436 cob Substances 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 230000001953 sensory effect Effects 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000007646 gravure printing Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000007799 cork Substances 0.000 description 2
- 101150038956 cup-4 gene Proteins 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 235000019615 sensations Nutrition 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 1
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010053317 Hydrophobia Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 235000016639 Syzygium aromaticum Nutrition 0.000 description 1
- 244000223014 Syzygium aromaticum Species 0.000 description 1
- 244000290333 Vanilla fragrans Species 0.000 description 1
- 235000009499 Vanilla fragrans Nutrition 0.000 description 1
- 235000012036 Vanilla tahitensis Nutrition 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
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- 239000007900 aqueous suspension Substances 0.000 description 1
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- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000010634 clove oil Substances 0.000 description 1
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- 238000004049 embossing Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229940041616 menthol Drugs 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000019613 sensory perceptions of taste Nutrition 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- 235000019505 tobacco product Nutrition 0.000 description 1
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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
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/56—Making tipping materials, e.g. sheet cork for mouthpieces of cigars or cigarettes, by mechanical means
- A24C5/565—Making tipping materials, e.g. sheet cork for mouthpieces of cigars or cigarettes, by mechanical means by treating the tipping material with a liquid or viscous solution, e.g. paraffine
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/281—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed
- A24B15/282—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed by indirect addition of the chemical substances, e.g. in the wrapper, in the case
-
- 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
- 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
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
- A24D3/0212—Applying additives to filter materials
- A24D3/0216—Applying additives to filter materials the additive being in the form of capsules, beads or the like
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
- D21H19/824—Paper comprising more than one coating superposed two superposed coatings, both being non-pigmented
-
- 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
- D21H21/14—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 function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
Definitions
- the invention relates to a coating method for wrapping material made of paper or cardboard for smoking products or parts of tobacco products, the coating method has the purpose of this coating material tends to absorb aqueous or oily substances, as well as the diffusion or migration of such substances through the paper or to reduce the carton. Furthermore, the invention relates to the corresponding coated cladding material.
- tipping paper for cigarettes as an exemplary casing material according to the invention.
- the reason for this is that the tipping paper is probably the most important application for the invention and that the description becomes easier to understand by focusing on only a single application. Only in the last part of the description will be briefly discussed further applications.
- Essential parts of a conventional filter cigarette are the tobacco rod, the filter and sheathing material in the form of the cigarette paper enveloping the tobacco rod, the filter wrap paper directly enveloping the filter and the tipping paper.
- the tipping paper is that part of the filter cigarette that is touched by the lips of the person smoking the cigarette when smoking the filter cigarette. It wraps around the filter part and usually protrudes slightly in the longitudinal direction of the filter cigarette in the longitudinal region of the tobacco rod and wrapped there the cigarette paper. It is bonded to the filter wrap paper and cigarette paper by gluing. By making this bond filter part and tobacco rod part are mechanically connected in the cigarette machine.
- the tipping paper is usually actually a paper, it but may also be a film or a composite material of several layers of different materials.
- the tipping paper has an imprint.
- this print can be reminiscent of cork.
- the EP 2551407 B1 suggests a filter wrapping paper, which brakes much better than other filter paper oil diffusion, but still is itself a light and very porous, so good air-permeable paper, as it is important for filter paper.
- the filter wrapper paper is particularly advantageous when using filters containing liquid flavorant which is intended to enrich the smoke stream but not to diffuse so much through the filter wrapper paper and into the mouthpiece overlay paper running around the finished cigarette outside thereof visible marks appear on the visible surface of the tipping paper.
- a special base paper defined by the freeness of the long-fiber pulp and the filler fraction, is proposed for the filter paper, which is impregnated with an aqueous composition, in particular an aqueous solution or suspension. In a further development, becomes later for impregnation on the filter wrapper additionally applied a layer in a likewise aqueous solution.
- a tipping paper which is colored through and provided with an embossment that is reminiscent of the natural surface of cork.
- the side of the tipping paper intended as the visible side is additionally provided with a lacquer layer. Lacquers for this purpose are exemplified by shellac, ethyl cellulose and polyethylene wax styrene acrylate.
- a tipping paper is proposed which is coated with a composite of nitrocellulose lacquer and a cold sensation fabric.
- a cigarette paper that is, a paper intended to wrap the tobacco rod
- a water-repellent impregnation of cellulose derivative In order to achieve a desired good air permeability of the cigarette paper despite the impregnation, it is proposed to apply the impregnation in several successive coating operations.
- the US 2009/0065012 A1 and the US 2004/0099280 describe multiple coatings for cigarette paper (that is, a paper intended to wrap the tobacco rod) which are applied in multiple tapes to form self-extinguishing cigarettes.
- Liquid volatile matrix is understood to mean all types of solvents (inorganic and organic) and dispersion media of dispersions, emulsions or suspensions.
- the purpose of the first coating process is essentially to protect the paper from damage caused by the water which is forcibly applied during the second coating process. Only with the second coating process is that coating applied which has the decisive desired effect of "spot-avoidance", in particular the lowest possible tendency to take up and migration or diffusion of aqueous, oily, waxy and alcohol-based substances causes.
- a coating process is defined as the application of a coating material, and a coating process can also consist of a time-separated application of several overlapping layers of the coating material.
- oil-repellent or oil-tight coating materials which can be applied in liquid form, are dissolved in water or aqueous solutions, or are present as a dispersion with water as a dispersion medium.
- water as a volatile liquid matrix for paper coatings is very limited use, because untreated paper absorbs water quickly and can change it to permanent uselessness, namely soft and rough, its enveloping surface increases, waves and can not be further processed.
- the second coating By first applying a coating which is not based on water as a volatile liquid matrix prior to the application of the second, ultimately essential oil repellent coating based on water as a volatile liquid matrix, and which reduces the water absorbency of the paper, the second coating can be used a much larger amount than you could otherwise and thus achieve a much better desired effect ("stain prevention"), than you could otherwise. Spots are local changes in appearance by water, alcohols, solvents, waxes, fats or oils (for example, fatty oils, mineral oils, silicone oils, essential oils). Of course, the invention is also applicable to such a second coating whose volatile liquid matrix, while not based on water, would also undesirably alter the properties of the paper or paperboard.
- the first coating Thus, generally speaking, it serves to lower the receptivity of the paper or paperboard to the volatile liquid matrix of the second coating.
- the coating according to the invention is particularly advantageous in the case of paper grades with a low grammage (below 80 g / m 2 , preferably below 40 g / m 2 ), since the negative influence on the paper properties increases with increasing absolute moisture in the paper.
- the first coating is dried.
- the second coating is applied over the first coating in the coating device 1.2.
- the second coating is dried.
- the first and second steps and / or the third and fourth steps can be done multiple times.
- the first and / or second coating process can be carried out by applying a plurality of layers applied one behind the other.
- the drying can be accelerated by the action of hot air or infrared radiation.
- a particularly valuable drying method for the coating according to the invention a combination of hot air and infrared drying has been found.
- the coating is, for example, first irradiated with infrared radiation, preferably from the uncoated back side of the paper. So the coating begins first in depth, so to dry on paper. This allows the evaporated solvent (or, more generally, the volatile liquid matrix) to escape through the upper, still liquid layers of the coating that are in the air. Once sufficient solvent has evaporated from the deeper layers, the evaporation of the near-surface can be Solvent by additional acceleration of the drying with infrared or hot air from the coated side of the paper forth. This drying process is particularly valuable for the second coating since the volatile liquid matrix of this coating can not escape through the underlying already dried first coating.
- the number and arrangement of hot air and infrared sources (2.1, 2.2, 3.1, 3.2, 3.3), as well as the intensity and duration of exposure to them, depends on the paper used and the type and quantity of paint used, and may best be determined by experiment be determined.
- one or more infrared sources (3.1, 3.2, 3.3) may be mentioned from above (coating side), one-sided from below or on both sides; one or more hot air sources (2.1, 2.2) on one side from above, one-sided from below or on both sides; and combinations of said arrangements of infrared sources (3.1, 3.2, 3.3) and hot air sources (2.1, 2.2).
- the action of the infrared sources (3.1, 3.2, 3.3) and hot air sources (2.1, 2.2) can be carried out simultaneously or staggered.
- Starting material is an exemplary pulp fiber based base paper, as is common for tipping paper. It has a grammage (basis weight) of about 20-80 g / m 2 , in the present example 35 g / m 2 .
- the readily absorbent base paper would absorb approximately the entire amount of the liquid component of the lacquer.
- the mass of the applied liquid is 11.7 g / m 2 .
- 11.7 g of water per 35 g of paper applied which corresponds to an increase of the absolute paper moisture, defined as [(wet mass - dry mass) / wet mass], of about 25 wt .-%.
- the absolute paper moisture would only increase by 12.7% by weight.
- the Applicant has found that with an increase in the regular paper moisture (4 - 7 wt .-%) to an absolute paper moisture of about 14 wt .-%, the paper properties are so adversely affected that the tipping material can not be processed properly. This illustrates the high importance of the coating according to the invention especially for absorbent paper grades with low grammage, since the absorption capacity of the paper for the liquid content of the second coating is reduced by the first coating.
- Shellac is used as a coating material for the first coating process.
- Shellac is mixed with ethanol as a solvent until a flow time of between 18 and 22 seconds results when measuring the viscosity of the mixture with the flow cup test with a cup diameter of 4 mm (ISO cup 4 mm according to EN ISO 2431 version 1993-02-15).
- Per m 2 of paper 1 to 6 grams, preferably 3 to 3.5 grams of dry application amount of this mixture are applied evenly on the base paper by gravure printing. The dry application rate can be measured as the weight increase of the paper after drying of the coating and thus represents the mass of the applied, non-volatile coating material.
- the paper is dried in air at a temperature of 70 ° C to 120 ° C for at least 1-4 seconds.
- the second coating is applied to the same side of the paper as the first coating, covering the first coating.
- styrene-acrylate paint is used, in which water is the liquid volatile matrix.
- the proportion of water is so high that, when measuring the viscosity with the outlet cup test with a cup diameter of 4 mm (ISO cup 4 mm according to EN ISO 2431 version 1993-02-15), a flow time of between 11 and 23 seconds results.
- Per m 2 of paper 1 to 6 grams of dry coating of the coating material, which is present in the liquid-volatile matrix of the liquid paint, evenly applied by gravure printing.
- the paper is dried in air at a temperature of 70 ° C to 120 ° C for at least 1-4 seconds.
- Cobb300 can be used, in which case the test must be possible with both water and oil as the test fluid.
- the test with oil is based on the standard SCAN-P 37:77, which describes the Cobb-Unger method.
- the CobbU value indicates the mass (in grams) of oil that is absorbed in a standardized period of time (6, 10 or 30 seconds) on one square meter of paper.
- the modification of the test consists in determining the CobbU300 (test duration 300 sec). Cobb300 was chosen because the test duration is approximately the same as the duration of smoking a cigarette.
- a Cobb300 value or CobbU300 value of less than 1 g / m 2, preferably less than 0.5 g / m 2 weight gain According to the paper during the test period through the coated surface recorded test liquid.
- the standard CobbU30 value (test duration 30 seconds with oil) is therefore also less than 1 g / m 2 or less than 0.5 g / m 2 .
- the official name of the KIT test is "Grease resistance test for paper and paperboard T 559 cm-12".
- the relevant standardization body is TAPPI (Technical Association of the Pulp and Paper Industry) 12 well-defined oily liquids are added dropwise and it is observed for each drop, whether the respective liquid penetrates to the second surface within a standardized test period. The oily liquids are numbered and have more diffusibility with increasing number. The result of the test is the highest of those Numbers to which the associated liquid does not penetrate the second paper surface during the test period.)
- the viscosity of the still liquid coating mixture for the first coating process should be such that the flow-through cup test results in a flow time of between 13 and 35 seconds (preferably 18-22 seconds). As the viscosity increases, the concentration of the coating material is higher and more of it is applied per printing process, but it also becomes more difficult to get the coating tightly sealed.
- a dry application of the coating material of 1 to 6 g / m 2 should be applied with the coating mixture, preferably at least 3 g / m 2 .
- lacquers and coating materials with similar physical properties in particular with regard to impermeability, hydrophobicity and wettability by oily substances, are generally also suitable for the second coating process.
- the viscosity of the still liquid coating mixture for the second coating operation should be such that the outflow cup test results in a flow time of between 11 and 23 seconds, preferably 11 and 12 seconds.
- Gravure printing as a method of application is advantageous because it is customary for the printing of tipping paper and for many technical reasons well suited. In the context of the inventive idea, however, it does not matter in principle with which method the liquid coating mixtures are applied, as long as the given rules for quantity per area, uniformity and consistency of the coating mixtures are adhered to. It is therefore also possible to use the flexographic printing process or other application processes.
- the coating materials of both coatings are preferably transparent and colorless, but may also contain a colorant. Furthermore, it is possible to add additives and further components such as waxes and resins, for example paraffin wax, to the coating mixtures.
- the first coating in the case of ethylcellulose lacquer, can also be multilayered when using other lacquers, the same applies to the second coating.
- the coating according to the invention is also advantageous if-unlike the example mentioned-papers are used which are already referred to as "wet-strength", because they are better wet-strength by the type of additives contained in the paper (wet strength or wet strength sizing) are as usual papers.
- the ability to absorb and diffuse aqueous or oily substances is further reduced in this case from a lower baseline.
- one can make do with less thick layer application according to the invention more or less amount of liquid coating mixture or less or more volatile liquid matrix).
- the so-called Ink-floating method very good.
- the coated paper is placed with the coated side down on the liquid level of an ink bath (with standardized ink) and it is observed whether and in which time ink penetrates to the top of the paper and discolored.
- a time of at least 15 seconds is measured before ink penetrates to the top of the paper. After the second coating process, this measured time is more than 300 seconds.
- Fig. 2 the result of the ink floating test is shown after 300 seconds.
- a typical tipping paper was used.
- the uncoated paper can be recognized as a black area bounded by a white frame, since it is already completely saturated with the ink.
- the mottled surface of the single-coated paper shows that the ink has already penetrated the paper at the black spots.
- the tipping paper provided with two different coatings according to the invention does not show any signs of discoloration and can be recognized as a white rectangle.
- the coating according to the invention Since the cigarette usually comes into contact with the lips of the smoker during smoking at its ends facing away from the tobacco rod, it is exposed to moisture in this area, which acts differently depending on the smoking habit on the cigarette. This may cause the paper to soften the cigarette and adhere to the smoker's lips.
- the coating according to the invention is also outstandingly suitable for the solution of this problem.
- the coating according to the invention is applied to the outside of the area of the smoking article which comes into contact with the lips of the smoker. In modern filter cigarettes, this is approximately the third of the mouthpiece covering paper facing away from the tobacco part.
- the tipping paper can also be coated before the composition of the cigarette.
- the tipping paper in both directions (out of the filter and into the filter), it makes sense to coat it on both sides according to the invention.
- the coating By applying the coating as printing, it is quite possible and advantageous to leave individual surface areas unprinted on one side of the paper, in particular precisely those surface areas which serve as bonding surfaces of the tipping paper during processing of the paper in the cigarette machine. This is particularly valuable for the overlap area - and thus bond area - of the tipping paper on the cigarette itself. It is also useful for the bonding surface area of the tipping paper with the filter paper and the cigarette paper.
- the coating according to the invention When the coating according to the invention is applied to the inside of the tipping paper, its main benefit is that it prevents substances from the inside of the coated area from reaching the outside of the tipping paper diffuse there and cause visible stains and / or an undesirable odor or taste sensation. Particularly important is this type of barrier, if in the filter part or in the tobacco rod of the cigarette in addition to the present without any flavor present by the tobacco, separate flavorings are housed, which are or include oily substances. Particularly significant in number here are the originally from Indonesia so-called Kretekzigaretten in which the tobacco clove oil, as a liquid or as shredded cloves and usually various other additives such as glycerin, molasses, palm sugar, cane sugar or other flavors are added.
- a recent major trend is the use of so-called flavor capsules, mainly for attachment in the filter of cigarettes.
- a flavor capsule is a capsule whose outer shell, for example, by the exertion of pressure, is destructible. As a result, the flavorings contained in the capsule in liquid form and their carrier substances are released.
- the coating according to the invention is also ideally suited here to prevent the passage of these substances to the outside of the cigarette.
- microcapsules in the form of microscopically small aroma capsules directly on the outside of the mouthpiece covering paper.
- the coating according to the invention is suitable for preventing the passage of the substances contained therein into the interior of the cigarette.
- vanilla or menthol are used as flavorings for aroma capsules, microcapsules or direct printing.
- PEG polyethylene glycol
- the coating according to the invention is applied only to the inside of the tipping paper, it can be perceived as a haptic advantage that the tipping paper approaches the cigarette feels velvety and less film-like than it would feel if it were also coated there according to the invention.
- the invention can be remedied here by the packaging material consisting of paper or cardboard is coated according to the invention at least on the inside.
- the packaging material consisting of paper or cardboard is coated according to the invention at least on the inside.
- the innerliner is the inner, flexible shell of a package consisting of several nested casings, with the shell surrounding the inner liner made of a stiffer material.
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Description
Die Erfindung betrifft ein Beschichtungsverfahren für aus Papier oder Karton gebildetes Ummantelungsmaterial für Rauchwaren oder Teile von Rauchwaren, wobei das Beschichtungsverfahren den Zweck hat, an diesem Ummantelungsmaterial die Neigung zur Aufnahme von wässrigen oder öligen Substanzen, sowie die Diffusion oder Migration solcher Substanzen durch das Papier oder den Karton, zu verringern. Weiters betrifft die Erfindung das dementsprechend beschichtete Ummantelungsmaterial.The invention relates to a coating method for wrapping material made of paper or cardboard for smoking products or parts of tobacco products, the coating method has the purpose of this coating material tends to absorb aqueous or oily substances, as well as the diffusion or migration of such substances through the paper or to reduce the carton. Furthermore, the invention relates to the corresponding coated cladding material.
Die Erfindung wird des Weiteren vorwiegend an Hand von Mundstückbelagspapier für Zigaretten als beispielhaftem erfindungsgemäßem Ummantelungsmaterial beschrieben. Der Grund dafür ist, dass das Mundstückbelagspapier der vermutlich wichtigste Anwendungsfall für die Erfindung ist und dass die Beschreibung durch die Konzentration auf nur einen einzigen Anwendungsfall leichter verständlich wird. Erst im letzten Teil der Beschreibung wird auch auf weitere Anwendungen kurz eingegangen.The invention will be further described primarily with reference to tipping paper for cigarettes as an exemplary casing material according to the invention. The reason for this is that the tipping paper is probably the most important application for the invention and that the description becomes easier to understand by focusing on only a single application. Only in the last part of the description will be briefly discussed further applications.
Wesentliche Teile einer üblichen Filterzigarette sind der Tabakstrang, der Filter und Ummantelungsmaterial in Form des den Tabakstrang einhüllenden Zigarettenpapiers, des den Filter unmittelbar einhüllenden Filterhüllpapiers und des Mundstückbelagspapiers.Essential parts of a conventional filter cigarette are the tobacco rod, the filter and sheathing material in the form of the cigarette paper enveloping the tobacco rod, the filter wrap paper directly enveloping the filter and the tipping paper.
Das Mundstückbelagspapier, oft auch als "Tippingpapier" oder kurz "Tipping" bezeichnet, ist jener Teil der Filterzigarette, welcher beim Rauchen der Filterzigarette durch die Lippen der die Zigarette rauchenden Person berührt wird. Es umhüllt den Filterteil und ragt üblicherweise in Längsrichtung der Filterzigarette auch geringfügig in den Längsbereich des Tabakstranges und umhüllt dort das Zigarettenpapier. Es ist mit dem Filterhüllpapier und dem Zigarettenpapier durch eine Klebung verbunden. Durch das Herstellen dieser Klebung werden in der Zigarettenmaschine Filterteil und Tabakstrangteil mechanisch verbunden. Das Mundstückbelagspapier ist zumeist tatsächlich ein Papier, es kann aber auch eine Folie sein oder auch ein Verbundmaterial aus mehreren Schichten verschiedener Materialien.The tipping paper, often referred to as "tipping paper" or "tipping" for short, is that part of the filter cigarette that is touched by the lips of the person smoking the cigarette when smoking the filter cigarette. It wraps around the filter part and usually protrudes slightly in the longitudinal direction of the filter cigarette in the longitudinal region of the tobacco rod and wrapped there the cigarette paper. It is bonded to the filter wrap paper and cigarette paper by gluing. By making this bond filter part and tobacco rod part are mechanically connected in the cigarette machine. The tipping paper is usually actually a paper, it but may also be a film or a composite material of several layers of different materials.
Üblicherweise weist das Mundstückbelagspapier eine Bedruckung auf. Beispielsweise kann diese Bedruckung an Kork erinnern.Usually, the tipping paper has an imprint. For example, this print can be reminiscent of cork.
In der zum Prioritätstag der vorliegenden Anmeldung noch nicht veröffentlichten österreichischen Patentanmeldung
Die
In der
In der
In der
Die
Die der Erfindung zu Grunde liegende Aufgabenstellung besteht darin Ummantelungsmaterial insbesondere Mundstückbelagspapier in jenem Verarbeitungszustand bereitzustellen, ab welchem bis zur Verarbeitung in der Zigarettenmaschine nur mehr eine oder mehrere kundenspezifische optisch und/oder sonst sensorisch wahrnehmbare Bedruckungen fehlen. Die speziellen Anforderungen an das im besagten Verarbeitungszustand bereitzustellende Mundstückbelagspapier sind:
- Das Mundstückbelagspapier soll tatsächlich ein Papier und nicht eine Folie sein. (Dies wird vor allem aus haptischen Gründen, aus Gründen der weiteren Bedruckbarkeit und aus Gründen der Verarbeitbarkeit in der Zigarettenmaschine gefordert.)
- Das erfindungsgemäß beschichtete Mundstückbelagspapier soll unabhängig von weiteren kundenspezifischen Bedruckungen gegenüber sonstigen als Mundstückbelagspapier verwendeten Papieren eine deutlich geringere Neigung zur Bildung von Flecken zufolge von Aufnahme von wässrigen, öligen, fettigen, wachsigen oder alkoholischen Substanzen und Diffusion dieser Substanzen durch das Mundstückbelagspapier hindurch aufweisen.
- Die gewünschte "Fleckenvermeidung" des Mundstückbelagspapieres soll verlässlich und unabhängig von den Eigenschaften des verwendeten Basispapiers erzielbar sein.
- The tipping paper should actually be a paper and not a foil. (This is required mainly for haptic reasons, for reasons of further printability and for reasons of processability in the cigarette machine.)
- The tipping paper coated according to the invention is said to have a significantly lower tendency to form stains due to ingestion of aqueous, oily, greasy, waxy or alcoholic substances, and diffusion of these substances through the tipping material, irrespective of other customer-specific imprints compared to other papers used as tipping paper.
- The desired "stain avoidance" of the tipping paper should be reliably and independently of the properties of the base paper used achievable.
Zum Lösen der Aufgabe wird vorgeschlagen das vom Papierherstellungsprozess kommende Basispapier in zwei zeitlich hintereinander stattfindenden Beschichtungsvorgängen mit in flüssiger Form aufgebrachten Beschichtungen zu versehen, wobei beim ersten Beschichtungsvorgang mit einem vorzugsweise organischen Lösemittel als flüssige, flüchtige Matrix ein schwach hydrophober Beschichtungsstoff aufgebracht wird und wobei im zweiten Vorgang mit vorzugsweise Wasser als flüssige, flüchtige Matrix ein stärker hydrophober und ölabweisender Beschichtungsstoff aufgebracht wird. Als "flüssige flüchtige Matrix" werden alle Arten von Lösemitteln (anorganisch und organisch) und Dispersionsmedien von Dispersionen, Emulsionen oder Suspensionen verstanden.To solve the problem, it is proposed to provide the base paper coming from the papermaking process in two successive coating operations with coatings applied in liquid form, wherein a weakly hydrophobic coating material is applied to the first coating operation with a preferably organic solvent as the liquid, volatile matrix and wherein in the second Process is preferably applied with water as liquid, volatile matrix, a more hydrophobic and oil-repellent coating material. "Liquid volatile matrix" is understood to mean all types of solvents (inorganic and organic) and dispersion media of dispersions, emulsions or suspensions.
Der erste Beschichtungsvorgang hat im Wesentlichen den Zweck das Papier vor Beschädigungen, durch das beim zweiten Beschichtungsvorgang zwangsweise mit aufgebrachte Wasser, zu schützen. Erst mit dem zweiten Beschichtungsvorgang wird jene Beschichtung aufgebracht, welche den entscheidenden gewünschten Effekt "Fleckenvermeidung", wie insbesondere möglichst geringe Neigung zur Aufnahme und Migration bzw. Diffusion von wässrigen, öligen, wachsigen und alkoholbasierten Substanzen, bewirkt. Gemäß der vorliegenden Schrift ist ein Beschichtungsvorgang als Auftrag eines Beschichtungsstoffs definiert, ein Beschichtungsvorgang kann dabei auch im zeitlich getrennten Auftrag von mehreren sich überlagernden Schichten des Beschichtungsstoffs bestehen.The purpose of the first coating process is essentially to protect the paper from damage caused by the water which is forcibly applied during the second coating process. Only with the second coating process is that coating applied which has the decisive desired effect of "spot-avoidance", in particular the lowest possible tendency to take up and migration or diffusion of aqueous, oily, waxy and alcohol-based substances causes. According to the present document, a coating process is defined as the application of a coating material, and a coating process can also consist of a time-separated application of several overlapping layers of the coating material.
Der gewünschte Effekt der "Fleckenvermeidung" erfordert eine Beschichtung, welche ölabweisend oder gar öldicht ist. Die der Anmelderin zum Zeitpunkt der Erfindung bekannten ölabweisenden bzw. öldichten Beschichtungsstoffe, welche in flüssiger Form aufgebracht werden können, sind in Wasser oder wässrigen Lösungen gelöst, bzw. liegen als Dispersion mit Wasser als Dispersionsmedium vor. Wasser als flüchtige flüssige Matrix für Papierbeschichtungen ist aber nur sehr begrenzt einsetzbar, weil unbehandeltes Papier Wasser rasch aufsaugt und sich dabei bis zur dauerhaften Unbrauchbarkeit verändern kann, nämlich weich und rau wird, seine einhüllende Oberfläche vergrößert, Wellen wirft und nicht mehr weiterverarbeitet werden kann.The desired effect of "stain avoidance" requires a coating which is oil repellent or even oil-tight. The applicant at the time of the invention known oil-repellent or oil-tight coating materials which can be applied in liquid form, are dissolved in water or aqueous solutions, or are present as a dispersion with water as a dispersion medium. However, water as a volatile liquid matrix for paper coatings is very limited use, because untreated paper absorbs water quickly and can change it to permanent uselessness, namely soft and rough, its enveloping surface increases, waves and can not be further processed.
Indem man vor dem Auftrag der zweiten, letztendlich essentiellen ölabweisenden Beschichtung, die auf Wasser als flüchtiger flüssiger Matrix basiert, erst eine Beschichtung aufbringt, welche nicht auf Wasser als flüchtiger flüssiger Matrix basiert und welche die Wasseraufnahmefähigkeit des Papiers vermindert, kann man von der zweiten Beschichtung eine deutlich größere Menge aufbringen, als man es sonst könnte und damit auch eine deutlich bessere gewünschte Wirkung ("Fleckenvermeidung") erzielen, als man es sonst könnte. Als Flecken werden lokale Veränderungen des Erscheinungsbildes durch Wasser, Alkohole, Lösungsmittel, Wachse, Fette oder Öle (Beispielsweise fette Öle, Mineralöle, Silikonöle, ätherische Öle) bezeichnet. Natürlich ist die Erfindung auch bei einer solchen zweiten Beschichtung anwendbar, deren flüchtige flüssige Matrix zwar nicht auf Wasser basiert, welche jedoch auch die Eigenschaften des Papiers oder des Kartons in der unerwünschten Weise verändern würde. Die erste Beschichtung dient daher allgemein formuliert dazu die Aufnahmefähigkeit des Papiers oder des Kartons gegenüber der flüchtigen flüssigen Matrix der zweiten Beschichtung herab zu setzen.By first applying a coating which is not based on water as a volatile liquid matrix prior to the application of the second, ultimately essential oil repellent coating based on water as a volatile liquid matrix, and which reduces the water absorbency of the paper, the second coating can be used a much larger amount than you could otherwise and thus achieve a much better desired effect ("stain prevention"), than you could otherwise. Spots are local changes in appearance by water, alcohols, solvents, waxes, fats or oils (for example, fatty oils, mineral oils, silicone oils, essential oils). Of course, the invention is also applicable to such a second coating whose volatile liquid matrix, while not based on water, would also undesirably alter the properties of the paper or paperboard. The first coating Thus, generally speaking, it serves to lower the receptivity of the paper or paperboard to the volatile liquid matrix of the second coating.
Besonders vorteilhaft ist die erfindungsgemäße Beschichtung bei Papiersorten mit einer niedrigen Grammatur (unter 80g/m2, vorzugsweise unter 40 g/m2), da die negative Beeinflussung der Papiereigenschaften mit Zunahme der absoluten Feuchtigkeit im Papier zunimmt.The coating according to the invention is particularly advantageous in the case of paper grades with a low grammage (below 80 g / m 2 , preferably below 40 g / m 2 ), since the negative influence on the paper properties increases with increasing absolute moisture in the paper.
Die Erfindung wird nun unter Bezugnahme auf ein Ausführungsbeispiel weiter erläutert.
- Fig. 1:
- Zeigt die schematische Darstellung eines beispielhaften erfindungsgemäßen Beschichtungsverfahrens.
- Fig. 2:
- Zeigt als Ergebnis eines Tintenschwimmtests ein erfindungsgemäß beschichtetes Mundstückbelagspapier und zwei Vergleichspapiere.
- Fig. 1:
- Shows the schematic representation of an exemplary coating method according to the invention.
- Fig. 2:
- As a result of an ink floating test, shows a tipping base paper coated according to the invention and two comparative papers.
In
- Im ersten Schritt wird durch eine Beschichtungsvorrichtung 1.1 die erste, untere Beschichtung aufgetragen.
- In the first step, the first lower coating is applied by a coating device 1.1.
Im zweiten Schritt wird die erste Beschichtung getrocknet.In the second step, the first coating is dried.
Im dritten Schritt wird in der Beschichtungsvorrichtung 1.2 die zweite Beschichtung über der ersten Beschichtung aufgetragen.In the third step, the second coating is applied over the first coating in the coating device 1.2.
Im vierten Schritt wird die zweite Beschichtung getrocknet.In the fourth step, the second coating is dried.
Der erste und zweite Schritt und/oder der dritte und vierte Schritt können dabei mehrfach erfolgen. Sprich der erste und/oder zweite Beschichtungsvorgang kann durch das Aufbringen mehreren zeitlich hintereinander aufgetragenen Schichten erfolgen.The first and second steps and / or the third and fourth steps can be done multiple times. Say the first and / or second coating process can be carried out by applying a plurality of layers applied one behind the other.
Als Abwandlungen wäre denkbar, die untere oder beide erfindungsgemäße Beschichtungen beidseitig aufzubringen oder eine der beiden Beschichtungen in mehreren Lagen zeitlich nacheinander aufzubringen, wobei jedes aufbringen einer Lage von einem Trocknungsvorgang gefolgt wird. Es besteht auch die Möglichkeit noch eine Bedruckungsvorrichtung nach den Beschichtungsvorrichtungen vor zu sehen, um eine Bedruckung mit optischer, haptischer, sensorischer oder sonstiger Funktion auf die getrocknete Beschichtung, oder die andere Papierseite aufzubringen. Denkbar wäre auch das Aufbringen der ersten Beschichtung und der zweiten Beschichtung auf zwei getrennten Anlagen auszuführen, beispielsweise aus platz- oder verfahrenstechnischen Gründen. Dabei wird die Papierbahn 4 bereits nach Trocknung der ersten Beschichtung zu einer Papierrolle aufgewickelt. Diese Papierrolle wird dann zu einer zweiten Anlage transportiert, wo die Papierbahn (4) abgewickelt und mit der zweiten Beschichtung versehen wird.As modifications, it would be conceivable to apply the lower or both coatings according to the invention on both sides or to apply one of the two coatings in succession in succession, wherein each application of a layer is followed by a drying process. It is also possible to see a printing device according to the coating devices before to apply a printing with optical, haptic, sensory or other function on the dried coating, or the other paper side. It would also be conceivable to carry out the application of the first coating and the second coating on two separate systems, for example for space or process engineering reasons. In this case, the
Wie in
Die Anzahl und Anordnung der Heißluft- und Infrarotquellen (2.1, 2.2, 3.1, 3.2, 3.3), sowie die Intensität und Dauer der Einwirkung durch diese, ist vom verwendeten Papier und von Art und Menge des verwendeten Lacks abhängig und kann am besten durch Versuch ermittelt werden. Für die Anordnung bezüglich des Papiers seien beispielsweise genannt: eine oder mehrere Infrarotquellen (3.1, 3.2, 3.3) einseitig von oben (Beschichtungsseite), einseitig von unten oder beidseitig; eine oder mehrere Heißluftquellen (2.1, 2.2) einseitig von oben, einseitig von unten oder beidseitig; sowie Kombinationen der genannten Anordnungen von Infrarotquellen (3.1, 3.2, 3.3) und Heißluftquellen (2.1, 2.2). Die Einwirkung durch die Infrarotquellen (3.1, 3.2, 3.3) und Heißluftquellen (2.1, 2.2) kann dabei zeitgleich oder gestaffelt erfolgen.The number and arrangement of hot air and infrared sources (2.1, 2.2, 3.1, 3.2, 3.3), as well as the intensity and duration of exposure to them, depends on the paper used and the type and quantity of paint used, and may best be determined by experiment be determined. For example, one or more infrared sources (3.1, 3.2, 3.3) may be mentioned from above (coating side), one-sided from below or on both sides; one or more hot air sources (2.1, 2.2) on one side from above, one-sided from below or on both sides; and combinations of said arrangements of infrared sources (3.1, 3.2, 3.3) and hot air sources (2.1, 2.2). The action of the infrared sources (3.1, 3.2, 3.3) and hot air sources (2.1, 2.2) can be carried out simultaneously or staggered.
Ausgangsmaterial ist ein beispielhaftes, auf Zellstoffasern basierendes Basispapier, wie es für Mundstückbelagspapier üblich ist. Es hat eine Grammatur (flächenbezogene Masse) von etwa 20 - 80 g/m2, im vorliegenden Beispiel 35 g/m2.Starting material is an exemplary pulp fiber based base paper, as is common for tipping paper. It has a grammage (basis weight) of about 20-80 g / m 2 , in the present example 35 g / m 2 .
Würde das Basispapier ohne den ersten Beschichtungsvorgang direkt mit der zweiten Beschichtung (z.B. Styrol-Acrylat-Lack auf Wasserbasis) versehen werden, so würde das gut saugfähige Basispapier annähernd die gesamte Menge des Flüssigkeitsanteils des Lacks aufnehmen. Bei einem Feststoffauftrag von 5 g/m2 und einer typischen Lackzusammensetzung mit einem Feststoffanteil zu Flüssigkeitsanteil von 30:70, beträgt die Masse der aufgetragenen Flüssigkeit 11,7 g/m2. Somit werden 11,7 g Wasser pro 35 g Papier aufgetragen, was einer Zunahme der absoluten Papierfeuchte, definiert als [(Feuchtmasse - Trockenmasse)/Feuchtmasse], von ca. 25 Gew.-% entspricht. Vergleichsweise würde sich bei gleicher Beschichtung bei einer Grammatur von 80 g/m2 die absolute Papierfeuchte nur um 12,7 Gew.-% erhöhen. Die Anmelderin hat festgestellt, dass bei einer Erhöhung der regulären Papierfeuchte (4 - 7 Gew.-%) auf eine absolute Papierfeuchte von ca. 14 Gew.-% die Papiereigenschaften derart negativ beeinflusst werden, dass das Mundstückbelagspapier nicht mehr zweckmäßig verarbeitet werden kann. Dies verdeutlicht die hohe Bedeutung der erfindungsgemäßen Beschichtung speziell für saugfähige Papiersorten mit niedriger Grammatur, da durch die erste Beschichtung die Aufnahmefähigkeit des Papiers für den Flüssigkeitsanteil der zweiten Beschichtung herab gesetzt wird.If the base paper were to be provided directly with the second coating (eg water-based styrene-acrylate lacquer) without the first coating operation, then the readily absorbent base paper would absorb approximately the entire amount of the liquid component of the lacquer. At a solids application of 5 g / m 2 and a typical paint composition having a solids content to liquid fraction of 30:70, the mass of the applied liquid is 11.7 g / m 2 . Thus, 11.7 g of water per 35 g of paper applied, which corresponds to an increase of the absolute paper moisture, defined as [(wet mass - dry mass) / wet mass], of about 25 wt .-%. By comparison, with the same coating at a grammage of 80 g / m 2, the absolute paper moisture would only increase by 12.7% by weight. The Applicant has found that with an increase in the regular paper moisture (4 - 7 wt .-%) to an absolute paper moisture of about 14 wt .-%, the paper properties are so adversely affected that the tipping material can not be processed properly. This illustrates the high importance of the coating according to the invention especially for absorbent paper grades with low grammage, since the absorption capacity of the paper for the liquid content of the second coating is reduced by the first coating.
Für den ersten Beschichtungsvorgang wird Schellack als Beschichtungsstoff verwendet. Schellack wird mit Ethanol als Lösemittel vermengt, bis sich bei Messung der Viskosität des Gemisches mit dem Auslaufbechertest mit einem Becherdurchmesser von 4mm (ISO Becher 4 mm nach EN ISO 2431 Version 1993-02-15) eine Auslaufzeit zwischen 18 und 22 Sekunden ergibt. Pro m2 Papier werden 1 bis 6 Gramm, vorzugsweise 3 bis 3,5 Gramm Trockenauftragsmenge dieses Gemisches im Tiefdruckverfahren gleichmäßig auf das Basispapier aufgebracht. Die Trockenauftragsmenge kann als Gewichtszunahme des Papiers nach Trocknung der Beschichtung gemessen werden und stellt somit die Masse des aufgebrachten, nicht flüchtigen Beschichtungsstoffes dar.
Nach dem ersten Beschichtungsvorgang wird das Papier an Luft bei einer Temperatur von 70°C bis 120°C mindestens 1-4 Sekunden getrocknet.
Man kann den Erfolg der ersten Beschichtung, nämlich "Unterschreiten einer maximal zulässigen Wasseraufnahmefähigkeit des Papiers von der Seite der beschichteten Oberfläche her" mittels des genormten sogenannten Cobb-Tests (ISO 535) testen. Wenn Wasser als Testflüssigkeit verwendet wird und Cobb 300 (300 Sekunden der Probewassermenge ausgesetzt) oder ein längerer Cobb-Test erfolgreich durchführbar ist, so ist die besagte Wasseraufnahmefähigkeit für dieses Verarbeitungsstadium ausreichend niedrig. (Entsprechend der Norm ist der Test dann durchführbar, wenn bei mehr als 80% der Proben innerhalb der Testdauer kein Wasser durchdringt). Bei den Proben wurden Cobb300-Werte von unter 25 g/m2 gemessen.Shellac is used as a coating material for the first coating process. Shellac is mixed with ethanol as a solvent until a flow time of between 18 and 22 seconds results when measuring the viscosity of the mixture with the flow cup test with a cup diameter of 4 mm (
After the first coating operation, the paper is dried in air at a temperature of 70 ° C to 120 ° C for at least 1-4 seconds.
It is possible to test the success of the first coating, namely "falling below a maximum permissible water absorption capacity of the paper from the side of the coated surface" by means of the standardized so-called Cobb test (ISO 535). When water is used as the test fluid and Cobb 300 (300 seconds exposed to the sample amount of water) or a longer Cobb test is successful, the said water absorbency is sufficiently low for this stage of processing. (According to the standard, the test is feasible if more than 80% of the samples do not penetrate within the test period). In the samples Cobb300 values of less than 25 g / m 2 were measured.
Die zweite Beschichtung wird auf die gleiche Papierseite aufgebracht wie die erste Beschichtung, deckt also die erste Beschichtung ab. Für den zweiten Beschichtungsvorgang wird Styrol-Acrylat-Lack verwendet, bei welchem Wasser die flüssige flüchtige Matrix ist. Der Wasseranteil ist so hoch, dass sich bei Messung der Viskosität mit dem Auslaufbechertest mit einem Becherdurchmesser von 4mm (ISO Becher 4 mm nach EN ISO 2431 Version 1993-02-15) eine Auslaufzeit zwischen 11 und 23 Sekunden ergibt. Pro m2 Papier werden 1 bis 6 Gramm Trockenauftrag des Beschichtungsstoffs, der in der flüssig flüchtigen Matrix des flüssigen Lackes vorliegt, im Tiefdruckverfahren gleichmäßig aufgetragen. Nach dem zweiten Beschichtungsvorgang wird das Papier an Luft bei einer Temperatur von 70°C bis 120°C mindestens 1-4 Sekunden getrocknet.The second coating is applied to the same side of the paper as the first coating, covering the first coating. For the second coating process, styrene-acrylate paint is used, in which water is the liquid volatile matrix. The proportion of water is so high that, when measuring the viscosity with the outlet cup test with a cup diameter of 4 mm (
Auch nach der zweiten Beschichtung kann man den Erfolg mit Hilfe des Cobb-Tests (ISO 535) testen. Es kann wieder Cobb300 angewendet werden, wobei in diesem Fall der Test sowohl mit Wasser als auch mit Öl als Testflüssigkeit möglich sein muss. Der Test mit Öl erfolgt in Anlehnung an die Norm SCAN-P 37:77, welche die Cobb-Unger Methode beschreibt. Der CobbU-Wert gibt die Masse (in Gramm) an Öl an, welche in einem genormten Zeitraum (6, 10 oder 30 Sekunden) an einem Quadratmeter Papier absorbiert wird. Die Modifikation des Tests besteht darin, dass der CobbU300 (Testdauer 300sec) bestimmt wird. Cobb300 wurde gewählt, da die Testdauer in etwa der Zeitdauer des Rauchens einer Zigarette entspricht. Dabei ergibt sich bei erfolgreicher Beschichtung bei beiden Testflüssigkeiten ein Cobb300-Wert bzw. CobbU300-Wert von weniger als 1 g/m2 bevorzugt weniger als 0,5 g/m2 Gewichtszunahme des Papiers zufolge während der Testdauer durch die beschichtete Oberfläche aufgenommener Testflüssigkeit. Der normgerechte CobbU30-Wert (Testdauer 30 Sekunden mit Öl) liegt daher auch unter 1 g/m2 beziehungsweise unter 0,5 g/m2.Even after the second coating, success can be tested using the Cobb test (ISO 535). Again, Cobb300 can be used, in which case the test must be possible with both water and oil as the test fluid. The test with oil is based on the standard SCAN-P 37:77, which describes the Cobb-Unger method. The CobbU value indicates the mass (in grams) of oil that is absorbed in a standardized period of time (6, 10 or 30 seconds) on one square meter of paper. The modification of the test consists in determining the CobbU300 (test duration 300 sec). Cobb300 was chosen because the test duration is approximately the same as the duration of smoking a cigarette. This results in successful coating in both test liquids, a Cobb300 value or CobbU300 value of less than 1 g / m 2, preferably less than 0.5 g / m 2 weight gain According to the paper during the test period through the coated surface recorded test liquid. The standard CobbU30 value (test duration 30 seconds with oil) is therefore also less than 1 g / m 2 or less than 0.5 g / m 2 .
Als Testmethode für den Erfolg der zweiten Beschichtung - und damit auch inklusive für den Erfolg der ersten Beschichtung - eignet sich sehr gut auch der für die Beurteilung der Dichtheit gegen Öl- und Fettdiffusion in Papier übliche sogenannte KIT Test. Auf der 12-teiligen Ergebnisskala wird bei ordnungsgemäßer Aufbringung beider Beschichtungen mindestens der Wert 11 erreicht; es ist aber durchaus auch ein Wert von 12 erreichbar und natürlich bevorzugt. Der Wert 12 bedeutet höchsten Widerstand gegen Diffusion durch ölige oder ähnliche Substanzen.As a test method for the success of the second coating - and thus also included for the success of the first coating - is very well suited for the assessment of the tightness against oil and grease diffusion in paper usual KIT test. On the 12-part result scale, if the two coatings are properly applied, at least the value 11 is achieved; but it is also a value of 12 achievable and of course preferred. The value 12 means highest resistance to diffusion by oily or similar substances.
(Die offizielle Bezeichnung des KIT-Tests ist "Grease resistance test for paper and paperboard T 559 cm-12". Die zuständige Normungsorganisation ist TAPPI (Technical Association of the Pulp and Paper Industry). Gemäß dem Test werden auf die beschichtete Papierseite Tropfen von 12 genau definierten öligen Flüssigkeiten aufgetropft und es wird zu jedem Tropfen beobachtet, ob die jeweilige Flüssigkeit innerhalb einer genormten Testdauer bis an die zweite Oberfläche durchdringt. Die öligen Flüssigkeiten sind nummeriert und haben mit steigender Nummer stärkere Diffusionsfähigkeit. Das Ergebnis des Tests ist die höchste jener Nummern, zu denen die zugehörige Flüssigkeit innerhalb der Testdauer nicht an die zweite Papieroberfläche durchdringt.)(The official name of the KIT test is "Grease resistance test for paper and paperboard T 559 cm-12".) The relevant standardization body is TAPPI (Technical Association of the Pulp and Paper Industry) 12 well-defined oily liquids are added dropwise and it is observed for each drop, whether the respective liquid penetrates to the second surface within a standardized test period.The oily liquids are numbered and have more diffusibility with increasing number.The result of the test is the highest of those Numbers to which the associated liquid does not penetrate the second paper surface during the test period.)
Abwandlungen und Verallgemeinerungen zur erfindungsgemäßen Beschichtung des Papiers gemäß dem Beispiel sind:
- Für den ersten Beschichtungsvorgang eignen sich neben dem genannten Schellack als Beschichtungsstoffe auch EthylcelluloseLack (bevorzugt in mehreren Schichten aufgetragen), Alkydharzlack oder Nitrozelluloselack, wobei Kombinationen der genannten Lacke besonders vorteilhaft anwendbar sind, wie beispielsweise eine Mischung aus Schellack und Nitrozelluloselack oder Ethylcelluloselack oder eine Mischung aus Alkydharzlack und Nitrozelluloselack oder Ethylcelluloselack. Die genannten Lacke oder Lackkombinationen können auch in Kombination mit Paraffin-Wachs vorteilhaft verwendet werden, beispielsweise Nitrozelluloselack, Alkydharzlack oder Ethylcelluloselack in Kombination mit Paraffin-Wachs. Allgemein können Lacke und Beschichtungsstoffe mit ähnlichen physikalischen Eigenschaften zu den genannten Lacken vor allem hinsichtlich Dichtheit und Hydrophobie Verwendung finden. Als organisches Lösemittel kann anstatt Ethanol beispielsweise auch Äthylazetat gut verwendet werden.
- For the first coating process are in addition to the shellac mentioned as coating materials and EthylcelluloseLack (preferably applied in several layers), alkyd resin or nitrocellulose, with combinations of said coatings are particularly advantageous applicable, such as a mixture of shellac and nitrocellulose or ethylcellulose or a mixture of Alkyd resin varnish and nitrocellulose varnish or ethylcellulose lacquer. The mentioned coatings or lacquer combinations can also be advantageously used in combination with paraffin wax, for example nitrocellulose lacquer, alkyd resin lacquer or ethylcellulose lacquer in combination with paraffin wax. In general, paints and coating materials with similar physical properties to the paints mentioned above, especially in terms of tightness and hydrophobicity can be used. As an organic solvent, ethyl acetate, for example, may well be used instead of ethanol.
Die Viskosität des noch flüssigen Beschichtungsgemisches für den ersten Beschichtungsvorgang sollte so bemessen sein, dass sich beim Auslaufbechertest eine Auslaufzeit zwischen 13 und 35 Sekunden ergibt (bevorzugt 18 - 22 Sekunden). Mit steigender Viskosität ist die Konzentration des Beschichtungsstoffes höher und es wird damit mehr davon je Druckvorgang aufgetragen, es wird aber auch schwieriger, die Schicht fehlerfrei dicht zu bekommen. Im ersten Beschichtungsvorgang sollte mit dem Beschichtungsgemisch ein Trockenauftrag des Beschichtungsstoffs von 1 bis 6 g/m2 aufgetragen werden, bevorzugt mindestens 3 g/m2.The viscosity of the still liquid coating mixture for the first coating process should be such that the flow-through cup test results in a flow time of between 13 and 35 seconds (preferably 18-22 seconds). As the viscosity increases, the concentration of the coating material is higher and more of it is applied per printing process, but it also becomes more difficult to get the coating tightly sealed. In the first coating operation, a dry application of the coating material of 1 to 6 g / m 2 should be applied with the coating mixture, preferably at least 3 g / m 2 .
Für den zweiten Beschichtungsvorgang eignen sich neben den genannten Styrol-Acrylat-Lacken natürlich auch ganz allgemein Lacke und Beschichtungsstoffe mit ähnlichen physikalischen Eigenschaften vor allem hinsichtlich Dichtheit, Hydrophobie und Benetzbarkeit durch ölige Substanzen.In addition to the abovementioned styrene-acrylate paints, lacquers and coating materials with similar physical properties, in particular with regard to impermeability, hydrophobicity and wettability by oily substances, are generally also suitable for the second coating process.
Die Viskosität des noch flüssigen Beschichtungsgemisches für den zweiten Beschichtungsvorgang sollte so bemessen sein, dass sich beim Auslaufbechertest eine Auslaufzeit zwischen 11 und 23 Sekunden, bevorzugt 11 und 12 Sekunden ergibt.The viscosity of the still liquid coating mixture for the second coating operation should be such that the outflow cup test results in a flow time of between 11 and 23 seconds, preferably 11 and 12 seconds.
Indem beim ersten Beschichtungsvorgang ein relativ hochviskoses Beschichtungsgemisch verwendet wird, wird die Gefahr vermindert, dass das Papier durch zu hohe Flüssiganteile beschädigt wird. Indem beim zweiten Beschichtungsvorgang ein weniger viskoses Beschichtungsgemisch verwendet wird, wird eine glattere, besser geschlossene Oberfläche erreicht.By using a relatively high-viscosity coating mixture in the first coating process, the risk is reduced that the paper will be damaged by excessive amounts of liquid. By using a less viscous coating mixture in the second coating operation, a smoother, more closed surface is achieved.
Tiefdruck als Auftragungsverfahren ist vorteilhaft, weil es für die Bedruckung von Mundstückbelagspapier üblich und aus vielerlei technischen Gründen gut geeignet ist. Im Rahmen des Erfindungsgedankens ist es aber prinzipiell egal, mit welchem Verfahren die flüssigen Beschichtungsgemische aufgebracht werden, solange die gegebenen Regeln für Menge pro Fläche, Gleichmäßigkeit und Konsistenz der Beschichtungsgemische eingehalten werden. Es können daher auch das Flexodruckverfahren oder andere Auftragsverfahren eingesetzt werden.Gravure printing as a method of application is advantageous because it is customary for the printing of tipping paper and for many technical reasons well suited. In the context of the inventive idea, however, it does not matter in principle with which method the liquid coating mixtures are applied, as long as the given rules for quantity per area, uniformity and consistency of the coating mixtures are adhered to. It is therefore also possible to use the flexographic printing process or other application processes.
Die Beschichtungsstoffe beider Beschichtungen sind bevorzugt transparent und farblos, können aber auch einen Farbanteil enthalten. Des Weiteren ist es möglich den Beschichtungsgemischen Additive und weitere Komponenten wie Wachse und Harze beispielsweise Paraffin-Wachs zuzusetzen.The coating materials of both coatings are preferably transparent and colorless, but may also contain a colorant. Furthermore, it is possible to add additives and further components such as waxes and resins, for example paraffin wax, to the coating mixtures.
Wie bereits für die erste Beschichtung im Fall von Ethylcellulose-Lack bespielhaft erwähnt, kann die erste Beschichtung auch bei Verwendung anderer Lacke mehrschichtig erfolgen, gleiches gilt für die zweite Beschichtung.As already mentioned in the case of the first coating in the case of ethylcellulose lacquer, the first coating can also be multilayered when using other lacquers, the same applies to the second coating.
Die erfindungsgemäße Beschichtung ist auch dann vorteilhaft, wenn - anders als im Beispiel genannt - Papiere verwendet werden, welche an sich schon als "nassfest" bezeichnet werden, weil sie durch die Art der im Papier enthaltenen Additive (Nassfestmittel oder Nassfest-Leimung) besser nassfest sind als übliche Papiere. Die Fähigkeit zur Aufnahme und Diffusion von wässrigen oder öligen Substanzen wird in diesem Fall von einem geringeren Ausgangswert aus noch weiter vermindert. Je nach Eigenschaften des verwendeten Ausgangsmaterials und Zielsetzung an die "Fleckenvermeidungsfähigkeit" kann man mit weniger starkem erfindungsgemäßem Schichtauftrag (mehr oder weniger Menge flüssiges Beschichtungsgemisch bzw. weniger oder mehr flüchtige flüssige Matrix) das Auslangen finden.The coating according to the invention is also advantageous if-unlike the example mentioned-papers are used which are already referred to as "wet-strength", because they are better wet-strength by the type of additives contained in the paper (wet strength or wet strength sizing) are as usual papers. The ability to absorb and diffuse aqueous or oily substances is further reduced in this case from a lower baseline. Depending on the properties of the starting material used and the objective of the "stain-avoidance capability", one can make do with less thick layer application according to the invention (more or less amount of liquid coating mixture or less or more volatile liquid matrix).
Für das rasche Austesten, ob für eine Papiersorte die passenden Parameter bei den Beschichtungen gewählt wurden und ob das Verfahren fehlerfrei durchgeführt wurde, eignet sich die sogenannte Tintenschwimmmethode sehr gut. Dabei wird das beschichtete Papier mit der beschichteten Seite nach unten auf den Flüssigkeitsspiegel eines Tintenbades (mit genormter Tinte) gelegt und es wird beobachtet ob und in welcher Zeit Tinte bis an die Oberseite des Papiers dringt und diese verfärbt. Im Fall von ausreichend guten Beschichtungen von Mundstückbelagspapier wird nach dem ersten Beschichtungsvorgang bei der Tintenschwimmmethode eine Zeit von mindestens 15 Sekunden gemessen, ehe Tinte an die Oberseite des Papiers durchdringt. Nach dem zweiten Beschichtungsvorgang beträgt diese gemessene Zeit mehr als 300 Sekunden.For fast debugging, whether for a paper grade the appropriate parameters were selected in the coatings and whether the process was carried out correctly, the so-called Ink-floating method very good. In this case, the coated paper is placed with the coated side down on the liquid level of an ink bath (with standardized ink) and it is observed whether and in which time ink penetrates to the top of the paper and discolored. In the case of sufficiently good coatings of tipping paper, after the first coating operation in the ink-floating method, a time of at least 15 seconds is measured before ink penetrates to the top of the paper. After the second coating process, this measured time is more than 300 seconds.
In
Dieser Test bestätigt, dass die Wasseraufnahmefähigkeit durch die erfindungsgemäße Beschichtung stark herabgesetzt wird und zwar so stark, dass eine Verfärbung des Papiers für zumindest 5 Minuten ausgeschlossen ist. Somit ist beim bestimmungsgemäßen Einsatz des Mundstückbelagspapiers jedenfalls gewährleistet, dass wässrige Substanzen dieses nicht durchdringen können. Flüssige Substanzen, die im Inneren der Zigarette enthalten sind oder während des Rauchens freigesetzt werden, durchdringen dieses nicht und treten nicht als sichtbare Flecken an der Außenseite des Mundstückbelagspapiers in Erscheinung.This test confirms that the water absorption capacity is greatly reduced by the coating according to the invention and indeed so strong that discoloration of the paper is excluded for at least 5 minutes. Thus, the intended use of the mouthpiece covering paper ensures that aqueous substances can not penetrate it. Liquid substances contained inside the cigarette or released during smoking permeate it not and do not appear as visible stains on the outside of the tipping paper.
Natürlich wird auch verhindert, dass flüssige Substanzen, die von außen auf das Mundstückbelagspapier einwirken, dieses durchdringen und in tiefere Schichten der Zigarette gelangen.Of course, it is also prevented that liquid substances that act on the tipping paper from the outside penetrate it and reach deeper layers of the cigarette.
Aus diesem Aspekt heraus wurde ein weiterer sehr vorteilhafter Anwendungsfall der erfindungsgemäßen Beschichtung entdeckt. Da die Zigarette üblicherweise während des Rauchens an ihrem dem Tabakstrang abgewandten Enden mit den Lippen des Rauchers in Kontakt kommt, ist sie in diesem Bereich Feuchtigkeit ausgesetzt, die je nach Rauchgewohnheit unterschiedlich stark auf die Zigarette einwirkt. Dadurch kann es dazu kommen, dass das Papier der Zigarette aufweicht und an den Lippen des Rauchers anhaftet.From this aspect, another very advantageous application of the coating according to the invention has been discovered. Since the cigarette usually comes into contact with the lips of the smoker during smoking at its ends facing away from the tobacco rod, it is exposed to moisture in this area, which acts differently depending on the smoking habit on the cigarette. This may cause the paper to soften the cigarette and adhere to the smoker's lips.
Es hat sich gezeigt, dass sich die erfindungsgemäße Beschichtung auch zur Lösung dieser Problemstellung hervorragend eignet. Zu diesem Zweck wird die erfindungsgemäße Beschichtung außen an dem Bereich des Rauchartikels aufgebracht, der in Kontakt mit den Lippen des Rauchers kommt. Bei modernen Filterzigaretten ist dies in etwa das vom Tabakteil abgewandt liegende Drittel des Mundstückbelagspapiers. Zweckmäßiger Weise kann das Mundstückbelagspapier auch bereits vor der Zusammenstellung der Zigarette beschichtet werden.It has been found that the coating according to the invention is also outstandingly suitable for the solution of this problem. For this purpose, the coating according to the invention is applied to the outside of the area of the smoking article which comes into contact with the lips of the smoker. In modern filter cigarettes, this is approximately the third of the mouthpiece covering paper facing away from the tobacco part. Appropriately, the tipping paper can also be coated before the composition of the cigarette.
Beim Einsatz eines dementsprechend vorbehandelten Mundstückbelagspapiers an einer Filterzigarette hat sich gezeigt, dass dieses auch nach langem Kontakt mit Speichel nicht aufgeweicht wird. Zudem konnte auch verhindert werden, dass die Lippen beim Freigeben der Zigarette etwas am Papier kleben bleiben, was von vielen Rauchern als unangenehm empfunden wird. Beschichtungen die ein solches Anhaften verhindern sollen, werden auch als Lip-Release-Coatings bezeichnet. Es hat sich gezeigt, dass der Lip-Release Effekt der erfindungsgemäßen Beschichtung sogar stärker ausgeprägt und länger aufrecht ist, als bei Beschichtungen nach dem Stand der Technik, wie einer Beschichtung mit Nitrozelluloselack.When using a correspondingly pretreated tipping paper on a filter cigarette has been shown that this is not softened even after prolonged contact with saliva. In addition, it was also possible to prevent the lips from sticking to the paper when releasing the cigarette, which is perceived as unpleasant by many smokers. Coatings intended to prevent such adhesion are also referred to as lip-release coatings. It has been found that the lip-release effect of the coating according to the invention is even more pronounced and longer lasting than in the case of coatings The prior art, such as a coating with nitrocellulose lacquer.
An Vorteilen und vorteilhaften Varianten von erfindungsgemäß hergestelltem Mundstückbelagspapier seien kurz erläutert:
- Sofern Papier nur an einer Seite mit einer erfindungsgemäßen Beschichtung beschichtet wurde, ist die zweite Papierseite noch gut wasseraufnahmefähig. Das ist bei der Verarbeitung von Mundstückbelagspapier in der Zigarettenmaschine sehr wünschenswert, da dort die Verarbeitungsgeschwindigkeit wesentlich davon abhängt, wie schnell eine Verklebung von um den Filterteil gewickeltem Mundstückbelagspapier an der Überlappungsstelle des Mundstückbelagspapiers mit sich selbst eine gewisse Mindestfestigkeit erreicht hat. Der Festigkeitszuwachs steigt mit der Fähigkeit des Papiers, Feuchtigkeit aus dem für die besagte Verklebung verwendeten Leim aufzusaugen. Sofern nur eine Papierseite erfindungsgemäß beschichtet ist, ist bei der Verklebung zumindest eine der beiden miteinander zu verbindenden Papierflächen noch aufnahmefähig für Flüssigkeiten bzw. Feuchtigkeit. Damit wird ein akzeptabel rascher Festigkeitszuwachs bei der Verklebung erreicht. (Mundstückbelagspapiere die aus einer durchgehend nicht saugenden Folie gebildet sind oder die aus durchgehend hoch nassfest geleimtem Papier bestehen sind diesbezüglich problematisch.)
- If paper was coated on only one side with a coating according to the invention, the second paper side is still good water absorption. This is very desirable in the processing of tipping paper in the cigarette machine, where the speed of processing depends substantially on how quickly an adhesion of tipping paper wrapped around the filter part to the overlap location of the tipping paper has reached a certain minimum strength with itself. The increase in strength increases with the ability of the paper to absorb moisture from the glue used for said bonding. If only one paper side is coated according to the invention, at least one of the two paper surfaces to be joined together is still receptive to liquids or moisture during bonding. This achieves an acceptably rapid increase in the strength of the bond. (Tipping papers which are formed from a continuous non-absorbent film or consist of consistently high wet strength sized paper are problematic in this regard.)
Wenn durch das Mundstückbelagspapier sehr gute Barrierewirkung in beiden Richtungen (aus dem Filter heraus und in den Filter hinein) erzielt werden soll, ist es sinnvoll es beidseits erfindungsgemäß zu beschichten. Indem man die Beschichtung als Bedruckung aufbringt, ist es durchaus möglich und vorteilhaft an einer Seite des Papiers einzelne Flächenbereiche unbedruckt zu lassen, insbesondere genau jene Flächenbereiche, welche bei der Verarbeitung des Papiers in der Zigarettenmaschine als Verklebungsflächen des Mundstückbelagspapiers dienen. Besonders wertvoll ist dies für die Überlappungsfläche - und damit Verklebungsfläche - des Mundstückbelagspapiers an der Zigarette mit sich selbst. Nützlich ist es aber auch für die Verklebungsflächenbereich des Mundstückbelagspapiers mit dem Filterhüllpapier und dem Zigarettenpapier.If very good barrier action is to be achieved by the tipping paper in both directions (out of the filter and into the filter), it makes sense to coat it on both sides according to the invention. By applying the coating as printing, it is quite possible and advantageous to leave individual surface areas unprinted on one side of the paper, in particular precisely those surface areas which serve as bonding surfaces of the tipping paper during processing of the paper in the cigarette machine. This is particularly valuable for the overlap area - and thus bond area - of the tipping paper on the cigarette itself. It is also useful for the bonding surface area of the tipping paper with the filter paper and the cigarette paper.
Die Vorteile einer an der Außenseite des Mundstückbelagspapiers aufgebrachten erfindungsgemäßen Beschichtung sind:
- a) Die Oberfläche ist für das weitere Bedrucken mit optischen oder haptischen Lacken sehr viel besser geeignet als eine unbehandelte Papieroberfläche, da sie dieser gegenüber sehr viel glatter, dichter und fehlerfreier ist. Es lassen sich daher feinere und abwechslungsreichere Strukturen drucken und es bedarf dafür im Allgemeinen weniger Druckmaterial.
- b) Die Oberfläche hat einen sogenannten Lip-Release-Effekt, das heißt, sie neigt auch nach längerem Kontakt mit feuchten Lippen - wie es den Rauchgewohnheiten in manchen Ländern entspricht - nicht dazu, an den Lippen kleben zu bleiben. Es wurde zudem überraschend festgestellt, dass der Lip-Release Effekt mit dem erfindungsgemäßen Verfahren sogar verbessert wurde gegenüber bekannten Beschichtungsverfahren.
- c) Die beschichtete Oberfläche verhindert, dass sich sensorisch wirksame Stoffe, wie typischerweise Aromastoffe, welche an der Außenseite des Mundstückbelagspapiers oft lokal begrenzt aufgetragen werden, im Mundstückbelagspapier ausbreiten, sich mit anderen, ebenfalls auf dem Mundstückbelagspapier aufgebrachten Stoffen vermischen oder teilweise sogar in den Filter und des Weiteren in den Rauchstrom gelangen. Es wird damit ermöglicht, eine breitere Palette von sensorisch wirksamen Stoffen anzuwenden, eine breitere Palette von Kombinationen dieser Stoffe an einer Zigarette anzuwenden und auch eine größere Menge dieser Stoffe außen am Mundstückbelagspapier bereitzustellen, als es sonst möglich wäre.
- a) The surface is much better suited for further printing with optical or haptic coatings than an untreated paper surface, as it is much smoother, denser and more error-free. It is therefore possible to print finer and more varied structures and generally requires less printing material.
- b) The surface has a so-called lip-release effect, that is, it does not tend to stick to the lips even after prolonged contact with wet lips - as is the smoking habits in some countries. It was also surprisingly found that the lip-release effect was even improved with the method according to the invention over known coating methods.
- c) The coated surface prevents sensory-active substances, such as typically flavorings often applied locally on the outside of the tipping paper, from spreading in the tipping paper, mixing with other materials also applied to the tipping paper, or even partially into the filter and further enter the smoke stream. It thus makes it possible to use a wider range of sensory substances, to apply a wider range of combinations of these substances to a cigarette and also to provide a greater amount of these substances on the outside of the tipping paper than would otherwise be possible.
Wenn die erfindungsgemäße Beschichtung an der Innenseite des Mundstückbelagspapiers aufgebracht ist, liegt sein Hauptnutzen darin, dass es verhindert, dass vom Inneren des umhüllten Bereiches her Substanzen an die Außenseite des Mundstückbelagspapiers diffundieren und dort sichtbare Flecken und/oder eine nicht gewünschte Geruchs- oder Geschmacksempfindung hervorrufen. Besonders wichtig ist diese Art der Barriere, wenn im Filterteil oder auch im Tabakstrang der Zigarette zusätzlich zu den durch den Tabak ohnedies vorhandenen Aromastoffen, separate Aromastoffe untergebracht sind, welche ölige Substanzen sind oder beinhalten. Zahlenmäßig besonders bedeutend sind hier die ursprünglich aus Indonesien stammenden sogenannten Kretekzigaretten, bei denen dem Tabak Nelkenöl, als Flüssigkeit oder als geschrotete Nelken und meist diverse andere Zusatzstoffe wie Glyzerin, Melasse, Palmenzucker, Rohrzucker oder weitere Aromen beigegeben sind.When the coating according to the invention is applied to the inside of the tipping paper, its main benefit is that it prevents substances from the inside of the coated area from reaching the outside of the tipping paper diffuse there and cause visible stains and / or an undesirable odor or taste sensation. Particularly important is this type of barrier, if in the filter part or in the tobacco rod of the cigarette in addition to the present without any flavor present by the tobacco, separate flavorings are housed, which are or include oily substances. Particularly significant in number here are the originally from Indonesia so-called Kretekzigaretten in which the tobacco clove oil, as a liquid or as shredded cloves and usually various other additives such as glycerin, molasses, palm sugar, cane sugar or other flavors are added.
Ein neuerer wesentlicher Trend ist die Verwendung von sogenannten Aromakapseln, hauptsächlich zur Anbringung im Filter von Zigaretten. Bei einer Aromakapsel handelt es sich um eine Kapsel, deren Außenhülle, beispielsweise durch das Ausüben von Druck, zerstörbar ist. Dadurch werden die in der Kapsel in flüssiger Form enthaltenen Aromastoffe und deren Trägersubstanzen freigesetzt. Die erfindungsgemäße Beschichtung ist auch hier bestens geeignet, um den Durchtritt dieser Substanzen an die Außenseite der Zigarette zu verhindern.A recent major trend is the use of so-called flavor capsules, mainly for attachment in the filter of cigarettes. A flavor capsule is a capsule whose outer shell, for example, by the exertion of pressure, is destructible. As a result, the flavorings contained in the capsule in liquid form and their carrier substances are released. The coating according to the invention is also ideally suited here to prevent the passage of these substances to the outside of the cigarette.
Es können beispielsweise auch Mikrokapseln in Form von mikroskopisch kleinen Aromakapseln direkt auf die Außenseite des Mundstückbelagspapiers aufgedruckt werden. Die erfindungsgemäße Beschichtung ist dazu geeignet, den Durchtritt der darin enthalten Substanzen in das Innere der Zigarette zu verhindern.It is also possible, for example, to print microcapsules in the form of microscopically small aroma capsules directly on the outside of the mouthpiece covering paper. The coating according to the invention is suitable for preventing the passage of the substances contained therein into the interior of the cigarette.
Als Aromastoffe für Aromakapseln, Mikrokapseln oder die direkte Bedruckung werden beispielsweise Vanille oder Menthol eingesetzt. Als Trägerstoffe für Aromastoffe findet beispielsweise Polyethylenglycol (PEG) Verwendung.For example, vanilla or menthol are used as flavorings for aroma capsules, microcapsules or direct printing. For example, polyethylene glycol (PEG) is used as carriers for flavorings.
Wenn die erfindungsgemäße Beschichtung nur an der Innenseite des Mundstückbelagspapiers angebracht ist, kann es als haptischer Vorteil empfunden werden, dass sich das Mundstückbelagspapier an der Zigarette samtiger und weniger folienartig anfühlt als es sich anfühlen würde wenn es auch dort erfindungsgemäß beschichtet wäre.If the coating according to the invention is applied only to the inside of the tipping paper, it can be perceived as a haptic advantage that the tipping paper approaches the cigarette feels velvety and less film-like than it would feel if it were also coated there according to the invention.
Nicht nur bei Kretekzigaretten tritt häufig das Problem der unerwünschten Fleckenbildung nicht nur am Mundstückbelagspapier der Zigaretten selbst auf, sondern auch schon an der aus Papier oder Karton bestehenden Verpackung, in welche die Zigaretten eingepackt sind. Das Problem nimmt mit zunehmender Lagerzeit und wärmerem und feuchterem Umgebungsklima zu. Durch die Erfindung kann hier Abhilfe geschaffen werden, indem das aus Papier oder Karton bestehende Verpackungsmaterial zumindest an der Innenseite erfindungsgemäß beschichtet ist. In dem Fall, dass Zigarettenschachteln verwendet werden, welche einen sogenannten Innerliner haben, ist es besonders vorteilhaft, schon den Innerliner an seiner Innenseite erfindungsgemäß zu beschichten. (Der Innerliner ist die innere, flexible Hülle einer aus mehreren ineinander liegende Hüllen bestehenden Verpackung, wobei die den Innerliner umgebende Hülle aus einem steiferen Material besteht.)Not only in Kretekzigaretten often occurs the problem of unwanted staining not only on the mouthpiece covering paper of the cigarettes themselves, but also on the existing paper or cardboard packaging in which the cigarettes are packed. The problem increases with increasing storage time and warmer and wetter ambient climate. The invention can be remedied here by the packaging material consisting of paper or cardboard is coated according to the invention at least on the inside. In the case that cigarette packets are used, which have a so-called inner liner, it is particularly advantageous to already coat the inner liner on its inner side according to the invention. (The innerliner is the inner, flexible shell of a package consisting of several nested casings, with the shell surrounding the inner liner made of a stiffer material.)
Claims (22)
- Coating process for wrapping material made from paper or cardboard for smoking articles or parts of smoking articles to reduce the tendency of this wrapping material to absorb and diffuse aqueous or oily substances, wherein the wrapping material is provided on the same side with two superimposed coatings which are applied in two coating processes taking place in chronological succession in each case in liquid form, wherein in both coating processes the liquid coating mixture consists of a coating material and a liquid volatile matrix,
wherein
in the first coating process at least one layer of a first coating material is applied which lowers the absorption capacity of the paper or cardboard with respect to the liquid volatile matrix of the second coating material,
in the second coating process at least one layer of a second coating material is applied which is repellent or tight with respect to one or more of the following substances, namely oils, fats, waxes, alcohols and water, wherein for the first coating material a different liquid volatile matrix is used than for the second coating material,
characterised in that the wrapping material is selected from a group of wrapping materials containing: the inner sheath of a packaging of smoking articles consisting of several sheaths arranged inside one another; innerliner of packagings of smoking articles; box as a package for smoking articles; mouthpiece lining paper of a cigarette or cigarillo. - Coating process according to Claim 1, characterized in that at least the first coating material is hydrophobic.
- Coating process according to Claim 1 or 2, characterized in that the liquid volatile matrix of the second coating material is water or an aqueous solution.
- Coating process according to one of Claims 1 to 3, characterized in that the liquid volatile matrix of the first coating material is an organic solvent.
- Coating method according to one of Claims 1 to 4, characterized in that the second coating material is more hydrophobic than the first coating material.
- Coating process according to one of Claims 1 to 5, characterized in that the viscosity of the liquid coating mixture applied in the first coating process is higher than that of the liquid coating mixture applied in the second coating process.
- Coating process according to one of Claims 1 to 6, characterized in that- the viscosity of the liquid coating mixture applied in the first coating process is such that an outflow time of between 13 and 35 seconds, preferably between 18 and 22 seconds, is attained during the flow cup test ISO 4 mm, that- the viscosity of the liquid coating mixture applied in the second coating process is such that an outflow time of between 11 and 23 seconds, preferably between 11 and 12 seconds, is attained during the flow cup test ISO 4 mm, that- in the first coating process 1 to 6 g/m2 of dry coating, and preferably at least 3 g/m2 of dry coating, of the first coating material is applied and that- in the second coating process 1 to 6 g/m2 of dry coating, and preferably 3 to 3.5 g/m2 of dry coating, of the second coating material is applied.
- Coating process according to one of Claims 1 to 7, characterized in that- as a coating mixture for the first coating process, one or more of the lacquers shellac, ethylcellulose lacquer, nitrocellulose lacquer or alkyd resin lacquer is used or a lacquer with physical properties which are similar to the said lacquers with respect to density and hydrophobicity and that- as a coating mixture for the second coating process, styrene-acrylate lacquer is used or a lacquer with physical properties which are similar with respect to density and hydrophobicity.
- Process according to one of Claims 1 to 8, characterized in that additives and/or further components, such as in particular paraffin wax, are added to at least one coating mixture.
- Process according to one of Claims 1 to 9, characterized in that the application of the two coatings in at least two coating devices (1.1, 1.2) takes place online on a continuous paper web (4), wherein a drying unit consisting of infrared sources (3.1, 3.2, 3.3) and/or hot-air sources (2.1, 2.2) is connected downstream from each coating device (1.1, 1.2).
- Process according to one of Claims 1 to 10, characterized in that it is applied to an absorbent paper with a grammage of not more than 80 g/m2, and preferably not more than 40 g/m2.
- Process according to one of Claims 1 to 11, characterized in that the first and second coating is applied to both sides of the paper or cardboard.
- Wrapping material for smoking articles or parts of smoking articles selected from a group of wrapping materials containing: the inner sheath of a packaging of smoking articles consisting of several sheaths arranged inside one another; innerliner of packagings of smoking articles; box as a package for smoking articles; mouthpiece lining paper of a cigarette or cigarillo, characterized in that it is coated in accordance with the coating process according to one of Claims 1 to 12.
- Wrapping material according to Claim 13, characterized in that the smoking articles are kretek cigarettes.
- Wrapping material according to Claim 13, characterized in that it is a mouthpiece lining paper of a cigarette or cigarillo and is attached to the cigarette or cigarillo with one side as an exterior side coated in accordance with one of Claims 1 to 12 and that it has at least one further printing or coating applied above the coating formed in accordance with Claims 1 to 12.
- Wrapping material according to Claim 15, characterized in that the further printing or coating contains an aqueous, oily, waxy or alcoholic substance.
- Wrapping material according to Claim 16, characterized in that the substance is a natural or artificial flavouring substance or its carrier.
- Wrapping material according to Claim 13, characterized in that it is a mouthpiece lining paper of a cigarette or cigarillo and is attached to the cigarette or cigarillo with one side as an interior side coated in accordance with one of Claims 1 to 12, whereby the cigarette or cigarillo contains an aqueous, oily, waxy or alcoholic substance.
- Wrapping material according to Claim 18, characterized in that the aqueous, oily, waxy or alcoholic substance is present as a flavouring substance or carrier in one or more flavour capsules.
- Wrapping material according to one of Claims 15 to 19, characterized in that at least on one side, the coating formed according to one of Claims 1 to 12 is interrupted at least in such a surface region of the mouthpiece lining paper which serves as an adhesive surface for the assembly of a cigarette or cigarillo consisting of several individual parts.
- Wrapping material according to Claim 20, characterized in that the interruption of the coating is located in the region in which the mouthpiece lining paper overlaps itself on the finished cigarette or cigarillo.
- Wrapping material according to any one of Claims 15 to 21, characterized in that a coating is applied to the outside of the mouthpiece lining paper according with the coating method according to one of Claims 1 to 12, whereby this coating is restricted to the area which is usually touched by the lips of the smoker, i.e. approximately in the longitudinal third of the mouthpiece lining paper which is on the far side of the tobacco rod.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
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| RS20171292A RS56651B1 (en) | 2013-09-27 | 2014-09-25 | Coating method |
| PL14824344T PL3048906T3 (en) | 2013-09-27 | 2014-09-25 | Coating method |
| SI201430547T SI3048906T1 (en) | 2013-09-27 | 2014-09-25 | Coating method |
| HRP20180164TT HRP20180164T1 (en) | 2013-09-27 | 2018-01-30 | Coating method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50626/2013A AT514862B1 (en) | 2013-09-27 | 2013-09-27 | coating process |
| PCT/AT2014/050219 WO2015042627A2 (en) | 2013-09-27 | 2014-09-25 | Coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3048906A2 EP3048906A2 (en) | 2016-08-03 |
| EP3048906B1 true EP3048906B1 (en) | 2017-11-01 |
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| EP14824344.7A Active EP3048906B1 (en) | 2013-09-27 | 2014-09-25 | Coating method |
Country Status (29)
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| EP (1) | EP3048906B1 (en) |
| JP (1) | JP6454331B2 (en) |
| KR (1) | KR102080372B1 (en) |
| CN (1) | CN105555154B (en) |
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| AT (1) | AT514862B1 (en) |
| AU (1) | AU2014328446B2 (en) |
| BR (1) | BR112016006487B1 (en) |
| CA (1) | CA2924235C (en) |
| CL (1) | CL2016000704A1 (en) |
| CY (1) | CY1121048T1 (en) |
| EA (1) | EA031273B9 (en) |
| ES (1) | ES2657425T3 (en) |
| HK (1) | HK1218054A1 (en) |
| HR (1) | HRP20180164T1 (en) |
| HU (1) | HUE036383T2 (en) |
| LT (1) | LT3048906T (en) |
| MX (1) | MX2016003806A (en) |
| MY (1) | MY180797A (en) |
| NO (1) | NO3048906T3 (en) |
| PH (1) | PH12016500519B1 (en) |
| PL (1) | PL3048906T3 (en) |
| PT (1) | PT3048906T (en) |
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| TW (1) | TWI646905B (en) |
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| ZA (1) | ZA201602637B (en) |
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| CN109890224A (en) * | 2016-10-31 | 2019-06-14 | Jt国际公司 | Smoking product with liquid-filling capsule |
| DE102017101595B3 (en) * | 2017-01-27 | 2018-05-30 | Leonhard Kurz Stiftung & Co. Kg | Transfer film, its use and method for producing a transfer film and method for producing an injection molded article decorated with a transfer layer of a transfer film |
| KR102440344B1 (en) * | 2018-09-12 | 2022-09-05 | 주식회사 케이티앤지 | A wrapper with enhanced hydrostatic pressure |
| CN109024072A (en) * | 2018-09-17 | 2018-12-18 | 佛山市森昂生物科技有限公司 | A kind of packaging paper product protection wax and preparation method thereof |
| CN109653023A (en) * | 2018-12-04 | 2019-04-19 | 民丰特种纸股份有限公司 | It is a kind of for manufacturing the translucent suction pipe paper and preparation method of translucent suction pipe |
| EP3995005A4 (en) * | 2019-07-01 | 2023-07-26 | Japan Tobacco Inc. | Heat-not-burn tobacco product and electrically heated tobacco product |
| EP4356762A3 (en) * | 2019-07-01 | 2024-05-08 | Japan Tobacco, Inc. | Heat-not-burn tobacco product |
| KR102450712B1 (en) * | 2019-12-16 | 2022-10-04 | 주식회사 케이티앤지 | Sound-generating smoking article |
| KR102450713B1 (en) * | 2019-12-16 | 2022-10-04 | 주식회사 케이티앤지 | Sound-generating smoking article |
| KR102450714B1 (en) * | 2019-12-16 | 2022-10-04 | 주식회사 케이티앤지 | Sound-generating smoking article |
| WO2022013222A1 (en) * | 2020-07-14 | 2022-01-20 | Jt International Sa | Stick equity – use of beeswax for tobacco products |
| US11549216B2 (en) | 2020-11-11 | 2023-01-10 | Sappi North America, Inc. | Oil/grease resistant paper products |
| KR102581005B1 (en) * | 2021-01-12 | 2023-09-21 | 주식회사 케이티앤지 | Coating method of tip paper for smoking articles and smoking articles manufactured accordingly |
| CN112813734B (en) * | 2021-01-19 | 2023-10-27 | 云南中烟工业有限责任公司 | Hydrophobic paper, preparation method thereof and application of hydrophobic paper to tipping paper for cigarettes |
| EP4349187A1 (en) * | 2021-05-28 | 2024-04-10 | Japan Tobacco, Inc. | Filter with added liquid, flavor inhalation article equipped with said filter, and flavor inhalation article package |
| KR20230075175A (en) * | 2021-11-22 | 2023-05-31 | 주식회사 케이티앤지 | Tip paper comprising flavor sheet and smoking article comprising same |
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| US20090065012A1 (en) * | 2001-08-14 | 2009-03-12 | Pankaj Patel | Materials and Methods for Manufacturing Cigarettes |
| US6997190B2 (en) * | 2002-11-25 | 2006-02-14 | R.J. Reynolds Tobacco Company | Wrapping materials for smoking articles |
| CA2506302A1 (en) * | 2002-11-25 | 2004-06-10 | R.J. Reynolds Tobacco Company | Wrapping materials for smoking articles |
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| US20080003384A1 (en) * | 2006-06-29 | 2008-01-03 | Polymer Ventures, Inc. | Multi-layer coatings to increase water and grease resistance of porous materials and materials having such protection |
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2013
- 2013-09-27 AT ATA50626/2013A patent/AT514862B1/en active
-
2014
- 2014-09-10 TW TW103131170A patent/TWI646905B/en active
- 2014-09-25 LT LTEP14824344.7T patent/LT3048906T/en unknown
- 2014-09-25 PT PT148243447T patent/PT3048906T/en unknown
- 2014-09-25 BR BR112016006487-9A patent/BR112016006487B1/en active IP Right Grant
- 2014-09-25 HU HUE14824344A patent/HUE036383T2/en unknown
- 2014-09-25 ES ES14824344.7T patent/ES2657425T3/en active Active
- 2014-09-25 MY MYPI2016000480A patent/MY180797A/en unknown
- 2014-09-25 US US15/024,776 patent/US9986757B2/en active Active
- 2014-09-25 NO NO14824344A patent/NO3048906T3/no unknown
- 2014-09-25 RS RS20171292A patent/RS56651B1/en unknown
- 2014-09-25 EA EA201690578A patent/EA031273B9/en not_active IP Right Cessation
- 2014-09-25 EP EP14824344.7A patent/EP3048906B1/en active Active
- 2014-09-25 MX MX2016003806A patent/MX2016003806A/en unknown
- 2014-09-25 SI SI201430547T patent/SI3048906T1/en unknown
- 2014-09-25 JP JP2016516015A patent/JP6454331B2/en active Active
- 2014-09-25 KR KR1020167010663A patent/KR102080372B1/en active IP Right Grant
- 2014-09-25 CA CA2924235A patent/CA2924235C/en active Active
- 2014-09-25 AU AU2014328446A patent/AU2014328446B2/en not_active Ceased
- 2014-09-25 PL PL14824344T patent/PL3048906T3/en unknown
- 2014-09-25 WO PCT/AT2014/050219 patent/WO2015042627A2/en active Application Filing
- 2014-09-25 CN CN201480052012.7A patent/CN105555154B/en active Active
- 2014-09-26 AR ARP140103563A patent/AR097777A1/en active IP Right Grant
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- 2016-03-17 PH PH12016500519A patent/PH12016500519B1/en unknown
- 2016-03-24 CL CL2016000704A patent/CL2016000704A1/en unknown
- 2016-04-18 ZA ZA2016/02637A patent/ZA201602637B/en unknown
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