wrapping or packaging materials

Abstract

The present invention relates to a wrapping or packaging material for cigarettes, heated-not-burn tobacco products, or tobacco products, comprising a base paper (1) and a coating (2) having a solvent-based lacquer in the form of an ethyl cellulose lacquer, a nitrocellulose lacquer, a shellac, a sealing lacquer, a PDA lacquer, or a CDA lacquer, wherein the base paper (1) has a smoothness in the range of 100 to 1500 Bekk seconds, and the wrapping or packaging material comprises a further coating, which is a layer (3) of a water-based polishing lacquer.

Description

[Technical Field]

[0001] The present invention relates to a wrapping or packaging material for cigarettes, heated non-combustible tobacco products, or tobacco products. [Background technology]

[0002] Each of the cigarettes and heated non-combustion tobacco products includes an aerosol-generating substrate, e.g., in the form of a tobacco rod, and a filter. Each of the cigarettes and heated non-combustion tobacco products includes a mouthpiece lining paper present at least in the region of the filter.

[0003] CN Patent No. 102943416(B) discloses a laminate made by adhering a base paper (which may have optical printing) to an existing plastic film, which has a coating of polymeric material.

[0004] WO2015042627A2 relates to the coating of paper or cardboard with two substances using different solvents to improve the barrier properties.

[0005] In a first embodiment, the present invention relates to a mouthpiece lining paper for cigarettes and heated-not-burn consumer tobacco products, or generally for the mouthpiece of an aerosol-generating consumer article.

[0006] Mouthpiece lining paper, often referred to as "tipping paper" or simply "tip," is the portion of an aerosol-generating consumer article that comes into contact with a person's lips when smoking a filter cigarette or heating a heat-not-burn consumer tobacco product. The mouthpiece lining paper encases the filter portion and typically extends slightly along the length of the consumer article into the longitudinal region of the tobacco rod or aerosol-generating substrate, encasing the cigarette paper or aerosol-generating substrate wrapping material therein. The mouthpiece lining paper forms the outermost wrapping material of the aerosol-generating consumer article, and, unlike cigarette paper, is not burned when the consumer article is used.

[0007] In most cases, the mouthpiece lining paper is actually paper, but it can also be a foil or a composite material made up of several layers of different materials. In the present invention, the mouthpiece lining paper is preferably paper.

[0008] Mouthpiece lining papers often include printing, which may be reminiscent of cork, for example, although white mouthpiece lining papers are also used in the lip contact area.

[0009] In a second embodiment, the present invention relates to a packaging material for cigarettes, heat-not-burn consumer tobacco products, or tobacco products. In particular, the second embodiment relates to an inner liner. The inner liner is a flexible inner casing of a packaging consisting of several casings, one inside the other, and the casing surrounding the inner liner is usually made of a more rigid material. Pouches, filter covers, and outer packaging can be produced as additional packaging materials using the present invention. The packaging material according to the present invention can particularly replace packaging materials that would otherwise be in the form of plastic films.

[0010] The similarity between the two embodiments is that the starting point is a base paper with a highly glossy surface due to the coating, with a smoothness in the range of 100-1500, preferably 650-1200, and ideally 800-1000 Bekk seconds. Smoothness values ​​can be determined using a Bekk smoothness tester, a measurement developed by Dr. Bekk in 1930. Bekk smoothness is an established method in the papermaking industry and therefore known to those skilled in the art. The method is based on airflow. The slower the airflow between the paper surface and the ideal flat surface, the higher the smoothness, measured in Bekk seconds. The shape, total volume, and distribution of cavities on the contact surface determine the smoothness. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Chinese Patent No. 102943416 [Patent Document 2] International Publication No. 2015042627 Summary of the Invention [Problem to be solved by the invention]

[0012] It is an object of the present invention to provide a glossy coating that is more environmentally friendly than aluminum lamination or metallization solutions. [Means for solving the problem]

[0013] To solve this problem, a wrapping or packaging material according to claim 1 is proposed.

[0014] The base paper preferably has a density of 30 to 300 g / m 2 , preferably 30 to 60 g / m 2 The weight ranges from 1000 to 10 ...

[0015] The base paper has a smoothness in the range of 100 to 1500 Bekk seconds, preferably 650 to 1200 Bekk seconds, in particular 800 to 1000 Bekk seconds. The base paper preferably has a smoothness of at least 650 Bekk seconds, in particular at least 800 Bekk seconds.

[0016] The coating applied to the base paper comprises solvent-based and water-based varnishes, preferably at least one printing ink made from a pigment mixture.

[0017] The advantage is that the coating is more environmentally friendly than aluminum lamination or metallization solutions. If necessary, the use of thermal foil can also be avoided.

[0018] The solvent-based varnish is preferably an ethyl cellulose varnish (EC varnish), a nitrocellulose varnish (NC varnish), a shellac, a sealing varnish, a polylactide varnish (PLA varnish) or a cellulose diacetate varnish (CDA varnish).

[0019] In an embodiment of the present invention, EC varnish (ethyl cellulose varnish), NC varnish (nitrocellulose varnish), shellac, sealing wax, liquid PLA (polylactide) or liquid CDA (cellulose diacetate) is first applied to the base paper, and then a water-based polish varnish with solvent barrier properties is applied thereon.

[0020] In another embodiment, a water-based polish varnish with solvent barrier properties is applied first, preferably followed by an EC varnish (ethyl cellulose varnish), an NC varnish (nitrocellulose varnish), a shellac, a sealing varnish, a liquid PLA (polylactide) or a liquid CDA (cellulose diacetate).

[0021] In both embodiments, a third layer is applied, which is a silver ink or a high-gloss silver ink. The silver or high-gloss silver preferably remains uncolored in its original form, but in both embodiments, it can also include translucent colors. These colors can include colors such as yellow, red, green, blue, gold, or combinations thereof, and can also be applied in an additional layer on top of the high-gloss silver.

[0022] The unpigmented solvent-based varnish herein functions in one embodiment as a separating layer towards the paper fibers and in another embodiment towards the water-based polish varnish with barrier properties. Depending on the application, the binder used in the solvent-based varnish can vary between ethyl cellulose, nitrocellulose, shellac, sealing wax, liquid PLA or liquid CDA.

[0023] Sealing varnishes are varnishes that are commonly used to seal various materials such as paper and foil, usually using heat.

[0024] In this case, a solvent-based varnish layer of a specific melting weight is used in a gravure drying chamber to close the pores and seal the layer, which works similarly with shellac, polylactide, and cellulose diacetate.

[0025] The varnishes (solvent-based varnishes) and layers (water-based gloss varnishes with barrier properties) mentioned above are preferably used without pigments, and within the scope of the present invention, the repellent effect resulting from the liquid main components (one is water, the other is solvent) contained therein is used. Typically, printing varnishes or inks with the same or similar chemical structure have been used up to now. The novel combination of these varnish mixtures results in a better boundary separation of the individual layers and prevents normal dissolution.

[0026] Ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish, liquid PLA (polylactide), liquid CDA (cellulose diacetate) or water-based polish varnish or pigmented printing inks are preferably applied using gravure printing.

[0027] The coating preferably achieves the following minimum gloss values ​​at the viewing angles listed:

[0028] At a viewing angle of 20°, the gloss value is a minimum of 2 and a maximum of 25.

[0029] At a viewing angle of 60°, the gloss value is a minimum of 10 and a maximum of 100.

[0030] At a viewing angle of 85°, the gloss value is a minimum of 20 and a maximum of 90.

[0031] The wrapping or packaging material according to the present invention preferably does not include any aluminium lamination.

[0032] The wrapping or packaging material according to the present invention preferably does not include any metallization.

[0033] The wrapping or packaging material according to the present invention preferably does not include any plastic film.The wrapping or packaging material according to the present invention preferably does not include any metal foil.

[0034] Supercalendered base papers and coated base papers with improved surface smoothness are preferred within the scope of the present invention.

[0035] Preferably, a KIT value of 5 to 12 is achieved by coating with a solvent-based varnish.

[0036] The solvent-based varnishes, including ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish, liquid PLA or liquid CDA, are preferably applied in an amount of 0.1 to 20 g / m 2, 3 to 10 g / m 2 is applied in an amount of

[0037] In one embodiment, the following layer structure is proposed starting from base paper: base paper - solvent-based varnish - water-based gloss varnish with barrier properties against solvents - silver or high gloss ink - translucent ink with at least one color.

[0038] In one embodiment, the following layer structure is proposed starting from a base paper: base paper - solvent-based varnish - water-based gloss varnish with barrier properties against solvents - silver or high gloss ink pigmented in a semi-transparent manner and comprising at least one color.

[0039] In one embodiment, the following layer structure is proposed starting from base paper: base paper - water-based gloss varnish with barrier properties against solvents - solvent-based varnish - silver or high-gloss ink - translucent ink with at least one color.

[0040] In one embodiment, the following layer structure is proposed starting from a base paper: base paper - water-based gloss varnish with barrier properties against solvents - solvent-based varnish - silver or high gloss ink pigmented in a semi-transparent manner and comprising at least one color.

[0041] A solvent-based varnish is a varnish that contains an organic solvent. A water-based varnish is a varnish that is based on water.

[0042] In one embodiment of the present invention, a base paper is proposed having a layered structure comprising at least one solvent-based varnish and at least one water-based gloss varnish, wherein the gloss varnish has barrier properties against the solvent of the solvent-based varnish, these two layers forming the first two layers of the layered structure, and at least one further varnish layer being provided on top of these two layers, said at least one further varnish layer being a silver ink or a high-gloss ink and / or a translucent ink comprising at least one color.

[0043] The solvent-based varnish and the water-based gloss varnish preferably do not contain any color pigments. The solvent-based varnish is particularly preferably a clear varnish. The water-based gloss varnish is also preferably a clear varnish which may contain gloss pigments.

[0044] In one embodiment, the silver ink or high gloss ink itself is pigmented in a translucent manner and is therefore also a translucent ink.

[0045] In one embodiment, the silver ink or high gloss ink is pigment-free in a translucent manner and an additional layer of translucent solvent-based ink containing at least one color is applied.

[0046] The silver or high gloss ink is, in one embodiment, solvent-based.

[0047] The present invention will be explained with reference to the drawings. [Brief explanation of the drawings]

[0048] [Figure 1] 1 shows a cross-sectional view of a first embodiment of a wrapping or packaging material.

[0049] [Figure 2] 1 shows a cross-sectional view of a second embodiment of a wrapping or packaging material.

[0050] [Figure 3] 1 shows a cross-sectional view of a third embodiment of a wrapping or packaging material.

[0051] [Figure 4] 10 shows a cross-sectional view of a fourth embodiment of a wrapping or packaging material. DETAILED DESCRIPTION OF THE INVENTION

[0052] 1 illustrates a first embodiment of a wrapping or packaging material in which a base paper 1 has a coating 2 made of EC varnish (ethyl cellulose varnish), NC varnish (nitrocellulose varnish), shellac, sealing varnish, PLA varnish or CDA varnish. A layer 3 of a water-based gloss varnish is present on top of the coating 2.

[0053] Figure 2 illustrates a second embodiment of a wrapping or packaging material in which a layer 3 of water-based gloss varnish is present on a base paper 1. On top of the layer 3 of water-based gloss varnish there is a coating 2 made of EC varnish (ethyl cellulose varnish), NC varnish (nitrocellulose varnish), shellac, sealing varnish, PLA varnish or CDA varnish.

[0054] When the wrapping or packaging material is a mouthpiece lining paper, the base paper 1 faces the interior of the cigarette, heated non-combustible tobacco product, or tobacco product to which the mouthpiece lining paper is attached.

[0055] The side with the coating 2 and the layer 3 of water-based gloss varnish is on the outside and preferably extends at least over the lip contact area.

[0056] Figures 3 and 4 show a further embodiment of the invention, comprising a base paper 1 having a layered structure comprising at least one coating 2 made of a solvent-based varnish and at least one layer 3 of a water-based gloss varnish, the gloss varnish 3 having barrier properties against the solvent of the solvent-based varnish, these two layers 2 and 3 forming the first two layers of the layered structure, and at least one further ink layer being provided on top of these two layers 2 and 3, said at least one further ink layer being a silver ink or high gloss ink layer 4.

[0057] In the embodiment of FIG. 3, the silver ink or high gloss ink layer 4 is preferably colored with at least one color, meaning that it contains at least one color pigment.

[0058] As a result, the silver ink or high gloss ink layer 4 additionally produces a translucent effect.

[0059] In the embodiment of FIG. 4, an additional translucent ink layer 5, preferably made of a solvent-based translucent ink, is applied over the silver or high gloss ink layer 4, this translucent ink layer 5 having at least one color tone and therefore containing pigment of at least one color.

[0060] The following applies to all drawings:

[0061] In one embodiment, both the solvent-based varnish layer 2 and the water-based polish varnish layer 3 of the coating can be present over the entire surface.

[0062] In another embodiment, the coating 2 is present over the entire surface and the water-based polish varnish 3 is printed only in the form of lines or partial areas.

[0063] In another embodiment, the water-based polish varnish 3 is present over the entire surface and the coating 2 is printed only in the form of lines or partial areas.

[0064] In another embodiment, the water-based gloss varnish 3 and the coating 2 are printed only in the form of lines or partial areas. The lines or partial areas of the water-based gloss varnish 3 and the coating 2 can coincide. In another embodiment, the lines or partial areas of the water-based gloss varnish 3 and the coating 2 partially overlap or intersect.

[0065] In one embodiment, the silver ink or high gloss ink layer 4 may be present over the entire surface.

[0066] In one embodiment, the silver ink or high gloss ink layer 4 may be in the form of lines or partial areas.

[0067] In one embodiment, the semi-transparent ink layer 5 can be present over the entire surface.

[0068] In one embodiment, the semi-transparent ink layer 5 may be in the form of lines or partial areas.

[0069] In one embodiment, the silver or high gloss ink is a solvent-based silver or high gloss ink.

[0070] In one embodiment, the silver or high gloss ink is a water-based silver or water-based high gloss ink.

[0071] In one embodiment, when the silver ink or high gloss ink is present on the layer 3 of water-based gloss varnish, the silver ink or high gloss ink is a solvent-based ink.

[0072] In one embodiment, when the silver ink or high gloss ink is present on the solvent-based coating 2, the silver ink or high gloss ink is a water-based ink.

Claims

1. 1. A wrapping or packaging material for cigarettes, heated non-combustible tobacco products, or tobacco products, comprising a base paper (1) and a coating (2) of a solvent-based varnish in the form of ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish, PLA varnish, or CDA varnish, wherein the base paper (1) has a smoothness in the range of 100 to 1500 Bekk seconds, and the wrapping or packaging material comprises a further coating which is a layer (3) of a water-based polishing varnish.

2. The coating (2) comprising ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish, PLA varnish or CDA varnish is in a concentration of 3 to 10 g / m 2 2. The wrapping or packaging material of claim 1, wherein the amount of

3. 3. The wrapping or packaging material according to claim 1 or 2, characterized in that the coating (2) comprising ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish, PLA varnish or CDA varnish is present on the base paper (1), and that a layer (3) of the water-based polish varnish is present on top of the coating (2) comprising ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish, PLA varnish or CDA varnish.

4. 3. The wrapping or packaging material according to claim 1 or 2, characterized in that the layer (3) of water-based gloss varnish is present on the base paper (1) and on top of the layer (3) of gloss varnish there is the coating (2) comprising ethyl cellulose varnish, nitrocellulose varnish, shellac, sealing varnish PLA varnish or CDA varnish.

5. 5. A wrapping or packaging material according to any one of claims 1 to 4, wherein the wrapping or packaging material has a gloss value at a viewing angle of 20° of at least 2, at a viewing angle of 60° of at least 16, and at a viewing angle of 80° of at least 25.

6. The coating with water-based gloss varnish (3) is in a range of 0.1 to 10 g / m 2 , preferably 0.5 to 5 g / m 2 6. The wrapping or packaging material according to any one of claims 1 to 5, characterized in that it is present in an amount of

7. 7. The wrapping or packaging material according to any one of claims 1 to 6, characterized in that an additional silver ink or high gloss ink layer (4) is applied on top of the first two layers formed by the coating with solvent-based varnish (2) and the layer of water-based gloss varnish (3).

8. 8. A wrapping or packaging material according to claim 7, characterized in that a semi-transparent ink layer (5) containing a color pigment is present on top of said additional silver or high gloss ink layer (4).

9. 8. A wrapping or packaging material according to claim 7, characterized in that the additional silver or high gloss ink layer (4) contains a color pigment.

10. 10. Wrapping or packaging material according to any one of claims 1 to 9, characterized in that the base paper (1) has a smoothness in the range of 650 to 1200 Bekk seconds, in particular in the range of 800 to 1000 Bekk seconds.

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