Wrapping material or packaging material

Abstract

The invention relates to a wrapping material or packaging material for cigarettes, heat-not-burn articles or tobacco products comprising a base paper (1) and a coating (2) with a solvent-based lacquer in the form of ethylcellulose lacquer, nitrocellulose lacquer, shellac, sealing lacquer, PDA lacquer or CDA lacquer, wherein the base paper (1) has a smoothness in the range of 100-1500 Bekk Sec and the wrapping material or packaging material comprises a further coating which is a layer of a water-based gloss lacquer (3).

Description

[0001] Wrapping or packaging material

[0002] The invention relates to a wrapping or packaging material for cigarettes, heat-not-burn articles or tobacco products.

[0003] A cigarette and a heat-not-burn article comprise an aerosol-generating substrate, for example in the form of a tobacco rod, and a filter. A cigarette and a heat-not-burn article comprise a tipping paper, which is present at least in the region of the filter.

[0004] CN102943416B discloses a laminate produced by bonding a base paper (which may have an optical print) to an existing plastic film. The existing film has a coating of a polymer material.

[0005] WO2015042627A2 concerns the coating with two substances containing different solvents with the purpose of improving the barrier properties of a paper or cardboard.

[0006] In a first variant, the invention relates to a tipping paper for cigarettes and heat-not-burn consumer articles or, in general, tipping papers for aerosol-generating consumer articles.

[0007] The tipping paper, often referred to as "tipping paper" or "tipping" for short, is the part of the aerosol-generating consumer article that comes into contact with the person's lips when smoking a filter cigarette or when heating the heat-not-burn consumer article. The tipping paper surrounds the filter part and usually extends slightly in the lengthwise direction of the consumer article into the length of the tobacco rod or the aerosol-generating substrate, where it surrounds the cigarette paper or the wrapping material of the aerosol-generating substrate. The tipping paper forms the outermost wrapping material of an aerosol-generating consumer article and, unlike cigarette paper, is not burned when the consumer article is used. The tipping paper is usually actually paper, but it can also be a film or a composite material made up of several layers of different materials.In the present invention, the tipping paper is preferably a paper.

[0008] The mouthpiece tipping paper often has a print. For example, this print can resemble cork. However, mouthpiece tipping papers are also used that are white in the area touched by the lips.

[0009] In a second variant, the invention relates to a packaging material for cigarettes, heat-not-burn consumer articles or tobacco products. In particular, the second variant relates to an inner liner. The inner liner is the inner, flexible shell of a package consisting of several nested shells, whereby the shell surrounding the inner liner is usually made of a stiffer material. Pouches, filter sleeves and outer packaging can be produced as further packaging materials using the method according to the invention. A packaging material according to the invention can in particular replace a packaging material which would otherwise be in the form of a plastic film.

[0010] What both variants have in common is that the starting point is a base paper which has a smoothness in the usual range of 100 - 1500, preferably 650-1200 and ideally 800-1000 Bekk Sea, which is provided with a coating with a very glossy surface. The smoothness value can be determined using a Bekk smoothness tester, using the measuring method developed by Dr. Bekk in 1930. Bekk smoothness is a method which is established in the paper industry and is therefore known to those skilled in the art and is based on air flow. The slower the air flows between the paper surface and the ideal plane, the higher the smoothness, expressed in Bekk smoothness seconds. The shape, the total volume and the distribution of the cavities on the contact surface are decisive for the smoothness.The object of the invention is to provide a glossy coating which is more environmentally friendly than solutions with aluminum laminations or metallization.

[0011] To achieve this object, a wrapping or packaging material according to claim 1 is proposed.

[0012] The base paper preferably has a weight range of 30-300 g / m 2 preferably 30-60g / m 2 on .

[0013] The base paper has a smoothness in the range of 100-1500 Bekk See, preferably 650-1200 Bekk See, in particular 800-1000 Bekk See. The base paper preferably has a smoothness of at least 650 Bekk See, in particular at least 800 Bekk See.

[0014] The coatings applied to the base paper include a solvent-based varnish and a water-based varnish and printing inks made from pigment mixtures.

[0015] The advantage is that the coating is more environmentally friendly than solutions with aluminum lamination or metallization. The use of hot foils can also be avoided if desired.

[0016] The solvent-based varnish is preferably an ethylcellulose varnish (EC varnish), a nitrocellulose varnish (NC varnish), shellac, a sealing wax, a polylactide varnish (PLA varnish) or a cellulose diacetate varnish (CDA varnish).

[0017] In one embodiment of the invention, an EC varnish (ethylcellulose varnish), an NC varnish (nitrocellulose varnish), a shellac, a sealing wax, a liquid PLA (polylactide), or a liquid CDA (cellulose diacetate) is first applied to the base paper. A water-based gloss varnish, which has barrier properties against solvents, is then applied over it.

[0018] In another variant, the water-based gloss varnish, which contains barrier properties against solvents, is applied first. Preferably, an EC varnish (ethylcellulose varnish), an NC varnish (nitrocellulose varnish), a shellac, a sealing wax, a liquid PLA (polylactide), or liquid CDA (cellulose diacetate) is then applied over it.

[0019] In a third layer, silver or high-gloss silver lacquer is applied in both versions. The silver or high-gloss silver preferably remains uncolored in its original form, but can also contain translucent colors in both versions. These colors can also contain colors such as yellow, red, green, blue, gold, or combinations thereof and be applied in an additional layer over the high-gloss silver.

[0020] The unpigmented solvent-based lacquers act as a separating layer, in one version towards the paper fibers, and in another version towards the water-based gloss or barrier lacquer. Depending on the application, the binders used in the solvent-based lacquer can vary between ethylcellulose, nitrocellulose, shellac, sealing wax, liquid PLA, or liquid CDA.

[0021] Sealing waxes are lacquers commonly used to seal various materials such as paper and foil. This is usually done using heat. In this case, a certain melting of the lacquer layer in the gravure drying chambers is used to close the pores and seal the layer. This works in a similar way with shellac, polylactide, and cellulose diacetate.

[0022] The aforementioned varnishes (solvent-based varnishes) and coatings (water-based gloss varnish with barrier properties) are preferably used unpigmented, taking advantage of the repellent effect of their main liquid components—water on the one hand and solvent on the other. Traditionally, printing inks with the same or similar chemical structure have always been used. The novel combination of these varnish mixtures results in better demarcation of the individual layers, and the dissolving that usually occurs is prevented.

[0023] The ethylcellulose varnish, nitrocellulose varnish, shellac, sealing wax, liquid PLA (polylactide), liquid CDA (cellulose diacetate) and / or water-based gloss varnish and / or pigmented printing ink are preferably applied by gravure printing.

[0024] The coating achieves the following minimum gloss values ​​at the viewing angles indicated:

[0025] At a viewing angle of 20°, the gloss value is min. 2 max. 25.

[0026] At a viewing angle of 60°, the gloss value is min. 10 max. 100.

[0027] At a viewing angle of 85 ° the gloss value is min . 20 Max 90

[0028] The wrapping or packaging material according to the invention preferably does not comprise an aluminum lamination.

[0029] The wrapping or packaging material according to the invention preferably does not comprise any metallization.

[0030] The wrapping or packaging material according to the invention preferably does not comprise any plastic film. The wrapping or packaging material according to the invention preferably does not comprise any metal foil.

[0031] Preferred are supercalendered base papers and coated base papers with increased surface smoothness.

[0032] A KIT value of 5-12 is preferably achieved by coating with solvent-based paint.

[0033] Preferred are ethylcellulose lacquer, nitrocellulose lacquer, shellac, sealing wax, liquid PLA or liquid CDA in an amount of 0.1-20g / m 2 , preferably 3 - 10 g / m 2 , upset .

[0034] In one embodiment, the following layer structure is proposed starting from the base varnish: base paper - solvent-based varnish - water-based gloss varnish with barrier properties against solvents - shiny silver varnish or high-gloss varnish - translucent solvent varnish comprising at least one color tone.

[0035] In one embodiment, the following layer structure is proposed starting from the base varnish: base paper - solvent-based varnish - water-based gloss varnish with barrier properties against solvents - glossy silver varnish or high-gloss varnish, which is translucently pigmented and comprises at least one color.

[0036] In one embodiment, the following layer structure is proposed starting from the base varnish: base paper - water-based gloss varnish with barrier properties against solvents - solvent-based varnish - glossy silver varnish or high-gloss varnish - translucent solvent varnish comprising at least one color tone.

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

[0038] Solvent-based paint is a paint containing an organic solvent. Water-based paint is a paint that is water-based.

[0039] In one embodiment variant of the invention, a base paper is proposed which has a layer structure comprising at least one solvent-based varnish and at least one water-based gloss varnish, which gloss varnish has barrier properties against the solvent of the solvent-based varnish, wherein these two layers form the first two layers of the layer structure, wherein at least one further varnish layer is provided above these two layers, which is a glossy silver varnish or high-gloss varnish and / or a translucent solvent varnish comprising at least one color tone. The solvent-based varnish and the water-based gloss varnish preferably do not comprise any color pigments. The solvent-based varnish is particularly preferably a clear varnish. The water-based gloss varnish is preferably likewise a clear varnish, which may contain gloss pigments.

[0040] In one version, the shiny silver lacquer or high-gloss lacquer itself is pigmented to create a translucent finish, so that it also functions as a translucent solvent lacquer.

[0041] In one embodiment, the shiny silver lacquer or high-gloss lacquer is not pigmented in a translucent manner, with an additional layer of a translucent solvent lacquer comprising at least one color tone being applied.

[0042] The silver or high-gloss varnish is preferably a solvent-based varnish.

[0043] The invention is illustrated by drawings.

[0044] Fig . 1 shows a section through an envelope or

[0045] Packaging material of a first design variant.

[0046] Fig. 2 shows a section through a wrapping or packaging material of a second embodiment.

[0047] Fig. 3 shows a section through a wrapping or packaging material of a third embodiment.

[0048] Fig. 4 shows a section through a wrapping or packaging material of a fourth embodiment.

[0049] Fig. 1 illustrates a first embodiment of a wrapping or packaging material, in which a coating 2 of EC varnish (ethylcellulose varnish), NC varnish (nitrocellulose varnish), shellac, sealing wax, PLA varnish, or CDA varnish is present on the base paper 1. A layer of a water-based gloss varnish 3 is applied over the coating 2.

[0050] Fig. 2 illustrates a second embodiment of a wrapping or packaging material, in which a layer of a water-based gloss varnish 3 is present on the base paper 1. A coating 2 of EC varnish (ethylcellulose varnish), NC varnish (nitrocellulose varnish), shellac, sealing wax, PLA varnish, or CDA varnish is applied over the layer of gloss varnish 3.

[0051] If the wrapping or packaging material is a tipping paper, the base paper 1 faces the interior of the cigarette, heat-not-burn article or tobacco product to which the tipping paper is attached.

[0052] The side provided with the coating 2 and the glossy varnish 3 is on the outside and preferably extends at least over the area that is touched by the lips.

[0053] 3 and 4 show further embodiments of the invention, comprising a base paper 1 which has a layer structure comprising at least one coating 2 of a solvent-based varnish and at least one layer of a water-based gloss varnish 3, which gloss varnish 3 has barrier properties against the solvent of the solvent-based varnish, these two layers 2, 3 forming the first two layers of the layer structure, wherein at least one further varnish layer is provided above these two layers 2, 3, which is a shiny silver varnish or high-gloss varnish layer 4.

[0054] In the variant of Fig. 3, the silver lacquer or high-gloss lacquer layer 4 preferably comprises at least one color tone by being pigmented, i.e., containing at least one color pigment. As a result, the silver lacquer or high-gloss lacquer layer 4 additionally creates a translucent effect.

[0055] In the variant of Fig. 4, an additional translucent lacquer layer 5 made of a translucent solvent lacquer is applied over the silver lacquer or high-gloss lacquer layer 4, which additional translucent lacquer layer has at least one color tone and therefore contains at least one color pigment.

[0056] The following applies to all figures: The layers of the solvent-based varnish of coating 2 and the water-based gloss varnish 3 can both be present over the entire surface in one variant.

[0057] In another design variant, the coating 2 is applied over the entire surface and the water-based gloss varnish 3 is printed only in the form of lines or partial areas.

[0058] In another design variant, the water-based gloss varnish 3 is applied over the entire surface and the coating 2 is printed only in the form of lines or partial areas.

[0059] 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 gloss varnish 3 and the coating 2 may be congruent. In another embodiment, the lines or partial areas of the gloss varnish 3 and the coating 2 partially overlap or intersect.

[0060] The silver lacquer or high-gloss lacquer layer 4 can be applied over the entire surface in one variant.

[0061] The silver lacquer or high-gloss lacquer layer 4 can be present in a variant in the form of lines or partial areas.

[0062] In one variant, the translucent lacquer layer 5 can be applied over the entire surface.

[0063] The translucent lacquer layer 5 can be present in a variant in the form of lines or partial areas.

[0064] In one version, the silver lacquer or high-gloss lacquer is a solvent-based lacquer.

[0065] In one version, the silver lacquer or high-gloss lacquer is a water-based lacquer.

[0066] In one embodiment, the silver lacquer or high-gloss lacquer is a solvent-based lacquer if the silver lacquer or high-gloss lacquer is present on the layer of the gloss lacquer 3 .

[0067] In one embodiment, the silver lacquer or high-gloss lacquer is a water-based lacquer if the silver lacquer or high-gloss lacquer is present on the coating 2 .

Claims

Patent claims 1. Wrapping or packaging material for cigarettes, heat-not-burn articles or tobacco products comprising a base paper (1) and a coating (2) with a solvent-based lacquer in the form of ethylcellulose lacquer, nitrocellulose lacquer, shellac, sealing wax, PLA lacquer, or CDA lacquer, characterized in that the base paper (1) has a smoothness in the range of 100-1500 Bekk Sea and the wrapping or packaging material comprises a further coating which is a layer of a water-based gloss lacquer (3).

2. Wrapping or packaging material according to claim 1, characterized in that the coating (2) is coated with ethylcellulose lacquer, nitrocellulose lacquer, shellac, sealing lacquer, PLA lacquer or CDA lacquer in an amount of 3 to 10 g / m 2 is present .

3. Wrapping or packaging material according to one of claims 1 to 2, characterized in that the coating (2) with ethylcellulose lacquer, nitrocellulose lacquer, shellac, sealing lacquer, PLA lacquer or CDA lacquer is present on the base paper (1) and the layer of the gloss lacquer (3) is present above the coating (2) with ethylcellulose lacquer, nitrocellulose lacquer, shellac, sealing lacquer, PLA lacquer or CDA lacquer.

4. Wrapping or packaging material according to one of claims 1 to 2, characterized in that the layer of gloss varnish (3) is present on the base paper (1) and the coating (2) with ethylcellulose varnish, nitrocellulose varnish, shellac, sealing varnish, PLA varnish or CDA varnish is present over the layer of gloss varnish (3).

5. Wrapping or packaging material according to one of claims 1 to 4, characterized in that at a viewing angle of 20° the gloss value is at least 2 and that at a viewing angle of 60° the gloss value is at least 16 and that at a viewing angle of 80° the gloss value is at least 25.

6. Wrapping or packaging material according to one of claims 1 to 5, characterized in that the layer of gloss varnish (3) is applied in an amount of 0.1 to 10 g / m 2 , preferably 0.5 to 5 g / m 2 , is present.

7. Wrapping or packaging material according to one of claims 1 to 6, characterized in that an additional silver lacquer or high-gloss lacquer layer (4) is present over the two first layers, which are formed by the coating (2) with a solvent-based lacquer and the layer of gloss lacquer (3).

8. Wrapping or packaging material according to claim 7, characterized in that a translucent lacquer layer (5) containing color pigment is present over the additional silver lacquer or high-gloss lacquer layer (4).

9. Wrapping or packaging material according to claim 7, characterized in that the additional silver lacquer or high-gloss lacquer layer (4) contains color pigment.

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

Images