Packaging for aerosol-generating consumables and method of manufacturing same

Abstract

The present invention relates to a packaging material (1) and an article (110) comprising such a packaging material (1) for use in a non-combustion aerosol delivery system. The packaging material (1) has a smooth surface (3) and a rough surface (2). The present invention further relates to methods for producing the packaging material (1) and the article (110), as well as uses of the packaging material (1).

Description

[Technical Field]

[0001] The present invention relates to a packaging material and an article comprising such a packaging material for use in a non-combustion aerosol delivery system. The packaging material has a smooth surface and a rough surface. The present invention further relates to methods for producing the packaging material and the article, and to uses of the packaging material. [Background technology]

[0002] Smoking articles, such as cigarettes and cigars, burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these articles by creating products that release compounds without combustion. Examples of such products are so-called "non-combustion heating" products or tobacco heating devices or products that release compounds by heating, but not burning, smokable material. Summary of the Invention

[0003] According to a first aspect of the present invention, there is provided a packaging material for use with an aerosol product, the packaging material having a first surface having a Bendtsen Roughness of at least about 1200 ml / min and a second surface having a Bendtsen Roughness of no more than about 500 ml / min. In some embodiments, the wrapping material has a mass of about 20 to about 90 g / m 2 It has a weight of In some embodiments, the packaging material has a thickness of about 50 to about 200 μm. In some embodiments, the wrapping material has a dry tensile strength of at least about 35 N / 15 mm.

[0004] In some embodiments, the packaging material has a water content of 9% or less. In some embodiments, the packaging material has an air permeability of about 0 CU (Cholesta Units). In some embodiments, the opacity of the smoother surface of the wrapper is greater than the opacity of the rougher surface of the wrapper. In some embodiments, the brightness of the smoother surface of the wrapper is less than the brightness of the rougher surface of the wrapper. In some embodiments, the whiteness of the smoother surfaces of the wrapper is less than the whiteness of the rougher surfaces of the wrapper.

[0005] In some embodiments, the wrapper comprises fibers in an amount of about 10 to about 60% by weight (dry weight basis) of the wrapper. In some embodiments, the packaging material comprises one or more binders. In some embodiments, the wrapping material comprises one or more binders in an amount of about 1 to about 20% by weight (dry weight basis) of the wrapping material. In some embodiments, the wrapping material comprises a single sheet, while in other embodiments, the wrapping material comprises two overlapping and bonded sheets, each having a different surface roughness.

[0006] In some embodiments, the wrapper comprises at least one flame retardant additive. In some embodiments, the at least one flame retardant additive is present in an amount of about 3 to about 70% by weight (dry weight basis) of the wrapper. In some embodiments, the flame retardant additive comprises an alkali metal halide or alkaline earth metal oxide, or both. In some embodiments, the flame retardant additive is incorporated into the packaging material, hi other embodiments, the flame retardant additive is included in a coating on the surface of the packaging material.

[0007] According to a second aspect of the invention, there is provided a method for producing an aerosol comprising: a rod containing an aerosol-forming material; a packaging material according to the first aspect; An article is provided for use in a non-combustion aerosol delivery system, comprising: In some embodiments, the article has a mouth end and a distal end, and the article includes a flame retardant additive disposed in the distal end. In some embodiments, the article comprises a plug including a flame retardant additive.

[0008] In some embodiments, the article comprises a coating that includes a flame retardant additive. In some embodiments, the coating is applied to a packaging material. In some embodiments, the coating is applied to the aerosol-forming material. In some embodiments, the wrapper comprises vents or perforations.

[0009] According to a third aspect of the present invention there is provided a non-combustion aerosol delivery system comprising an article according to the second aspect. According to a fourth aspect of the present invention, there is provided a method for producing a packaging material according to the first aspect, comprising the steps of: forming a slurry; Casting the slurry onto a band or belt; drying the slurry; removing the dried slurry from the band or belt; A method is provided, comprising:

[0010] According to a fifth aspect of the present invention there is provided the use of a band cast sheet material as packaging in an article for use in a non-combustion aerosol delivery system. According to a sixth aspect of the present invention there is provided the use of a packaging material according to the first aspect to reduce loss of aerosol-forming material from an article for use in a non-combustion aerosol delivery system.

[0011] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic cross-sectional view of a packaging material according to one embodiment of the present invention. [Figure 2] 1 is a schematic cross-sectional view of an alternative packaging material according to one embodiment of the present invention; [Figure 3]3 is a perspective view of an aerosol-generation segment of an article for use in a non-combustion aerosol delivery device for generating an aerosol, the aerosol-generation segment including the packaging material shown in FIG. 1 or FIG. 2. [Figure 4] FIG. 4 is a perspective view of a non-combustion aerosol delivery device for generating aerosol from an article comprising the aerosol-generation segment shown in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0013] packaging material The present invention provides an improved packaging material for articles or consumables for use in non-combustion aerosol delivery systems. According to the present invention, the packaging material has one rougher surface and one smoother surface. When used as packaging material for an article, the packaging material is positioned so that the smoother surface faces outward and the rougher surface faces inward so as to contact other elements of the packaged article.

[0014] The present inventors have discovered that packaging materials having relatively rough and relatively smooth surfaces have several surprising technical advantages.

[0015] The packaging material of the present invention enjoys the advantage of allowing manufacturing machines to operate at faster speeds when applying the packaging material to articles compared to the speeds required when using traditional paper or foil packaging materials. It is hypothesized that the increased manufacturing machine speed may be due to reduced slippage as the packaging material is fed through the machine and the article is surrounded by the packaging material. It is believed that the rough surface allows for greater grip, allowing the packaging material to be pulled through the machine at higher speeds. The packaging material of the present invention also enjoys the advantage that less adhesive is required to hold the packaging material in place around the article. The packaging material is placed around the article, the longitudinal seams are glued, and the overlapping packaging material is typically attached to itself, attaching the rougher (inner) surface to the smoother (outer) surface. The amount of adhesive required to hold the packaging material in place depends on several factors. If the adhesive dries faster, less is needed to achieve the desired fixation of the packaging material. The hypothesis is that the adhesive dries faster when applied to the packaging material of the present invention because the packaging material is hygroscopic, absorbing water from the adhesive and leaving a more concentrated adhesive layer on the surface to provide the desired adhesion.

[0016] The wrapping material of the present invention also enjoys the advantage that when the wrapping material surrounds a rod of aerosol-forming material, the rougher surface in contact with the aerosol-forming material creates a larger contact surface, better holding the material in place and reducing the amount of aerosol-forming material that falls off the end of the rod (so-called "end shedding").

[0017] The packaging material of the present invention also enjoys the advantage that a smooth surface located on the visible surface of the article provides a superior appearance to the packaged article. More porous packaging materials have been found to be less attractive to consumers and convey a poorer impression of quality. In contrast, the smooth surface of the packaging material that is visible when the packaging material surrounds the aerosol product item provides the article with a high-quality, expensive appearance. In embodiments where the packaging material is formed by band casting, the smooth surface can have a glossy appearance that is visible on the surface of an article formed with such packaging material.

[0018] The surface roughness of the packaging material disclosed herein can be evaluated as Bendtsen roughness. This roughness is measured by clamping a test piece between a flat glass plate and a circular metal head and measuring the airflow rate (ml / min) between the paper and the head. Applicable standard test methods include BS4420, ISO8791 / 2, DIN53108, and SCAN P21.

[0019] In some embodiments, the wrapping material has a relatively rough first surface having a Bendtsen Roughness of at least about 1200 ml / min. In some embodiments, the rough surface has a Bendtsen Roughness of at least about 1250 ml / min, at least about 1300 ml / min, at least about 1350 ml / min, at least about 1400 ml / min, at least about 1450 ml / min, or at least about 1500 ml / min. Alternatively or additionally, the rough surface has a Bendtsen Roughness of no greater than about 2200 ml / min. For example, the rough surface has a Bendtsen Roughness of no greater than about 2150 ml / min, or no greater than about 2100 ml / min. In potentially preferred embodiments, the rough surface has a Bendtsen Roughness of from about 1200 to about 2150 ml / min, or from about 1500 to about 1850 ml / min.

[0020] In some embodiments, the wrapping material has a relatively smooth second surface having a Bendtsen Roughness of less than about 500 ml / min. In some embodiments, the smooth surface has a Bendtsen Roughness of about 450 ml / min or less, about 400 ml / min or less, about 350 ml / min or less, about 300 ml / min or less, or about 250 ml / min or less. Alternatively or additionally, the smooth surface has a Bendtsen Roughness of at least about 150 ml / min. For example, the smooth surface has a Bendtsen Roughness of at least about 200 ml / min or at least about 350 ml / min. In potentially preferred embodiments, the smooth surface has a Bendtsen Roughness of about 200 to about 400 ml / min, or about 300 to about 400 ml / min.

[0021] For comparison, conventionally used paper packaging typically has a surface roughness of about 122 ml / min (smooth) to about 132 ml / min (rough). The use of aluminum foil as packaging for consumables is also known, and the surface roughness of these foils typically ranges from about 14 ml / min (smooth) to about 637 ml / min (rough).

[0022] The packaging material is a sheet material, hi some embodiments, the sheet material is paper or a paper-like material.

[0023] In some embodiments, the sheet material is paper formed from a slurry using a band casting method. For example, a method for producing a band-cast sheet includes preparing a slurry containing an aqueous component and a solid component including fibers and an optional binder. The slurry is cast onto, for example, a moving band or belt, then dried and removed from the band to form a sheet. When the slurry dries, the surface that comes into contact with the band becomes smooth. The other surface of the band-cast sheet becomes rougher.

[0024] In some embodiments, the packaging material has a mass of about 20 to about 90 g / m, also known as GSM. 2 In some embodiments, the wrapping material has a weight of at least about 20 g / m 2 , at least about 30 g / m 2 , at least about 40 g / m 2 , at least about 50 g / m 2 , at least about 60 g / m 2 , or at least about 70 g / m 2 Additionally or alternatively, the packaging material has a weight of about 90 g / m 2 Below, about 85g / m 2 or less, or about 80 g / m 2 In some embodiments, the wrapping material has a weight of about 60 to about 90 g / m 2 , or about 60 to about 80 g / m 2 It has a weight of

[0025] The packaging material is approximately 20 g / m 2 ~about 90g / m 2 , about 50g / m 2 ~about 80g / m 2 , or approximately 60 g / m 2 It may have a basis weight or weight of up to about 80 gsm. Higher basis weight packaging materials tend to provide greater structural integrity to the packaged item.

[0026] In some embodiments, the packaging material has a thickness of about 50 to about 200 μm. In some embodiments, the packaging material has a thickness of at least about 50 μm, at least about 60 μm, at least about 70 μm, at least about 80 μm, at least about 90 μm, or at least about 95 μm. Additionally or alternatively, the packaging material has a thickness of about 200 μm or less, about 190 μm or less, about 180 μm or less, about 170 μm or less, about 160 μm or less, about 150 μm or less, about 140 μm or less, about 130 μm or less, about 120 μm or less, about 110 μm or less, or about 100 μm or less. In some embodiments, the packaging material has a thickness of about 50 to about 150 μm, about 80 to about 120 μm, or about 90 to about 100 μm.

[0027] The tensile strength of the packaging materials disclosed herein was evaluated according to standard test ISO 1924-2 at a constant elongation rate of 20 mm / min.

[0028] In some embodiments, the wrapping material has a dry tensile strength (the maximum stress the wrapping material can withstand before breaking) of at least about 35 N / 15 mm. In some embodiments, the wrapping material has a dry tensile strength of at least about 38 N / 15 mm, or at least about 40 N / 15 mm. In some embodiments, the wrapping material has a dry tensile strength of about 35 to about 50 N / 15 mm, or about 37 to about 45 N / 15 mm.

[0029] In some embodiments, the wrapping material may exhibit an elongation of about 3% to about 5.5% before breaking during a dry tensile test, hi some embodiments, the elongation may be about 4% to about 5%.

[0030] In some embodiments, the wrapping material has a wet tensile strength of at least 20 N / 15 mm. In some embodiments, the wrapping material has a wet tensile strength of at least about 25 N / 15 mm, or at least about 30 N / 15 mm. In some embodiments, the wrapping material has a wet tensile strength of about 30 to about 45 N / 15 mm, or about 35 to about 40 N / 15 mm.

[0031] In some embodiments, the wrapping material may exhibit an elongation of about 1.5% to about 3.5% before breaking during a wet tensile test.

[0032] In some embodiments, the packaging material has a water or moisture content of about 9% or less, as measured by Karl Fischer analysis. In some embodiments, the moisture content is about 8% or less, about 7% or less, or about 6% or less. Additionally or alternatively, the moisture content is at least about 3%, at least about 3.5%, or at least about 4%. In some embodiments, the packaging material has a moisture content of about 4 to about 8%, or about 5 to about 7%.

[0033] In some embodiments, the packaging material may be gas impermeable or substantially gas impermeable. For example, the packaging material may have an air permeability of zero (0) CU (Cholesta Units). This refers to the material properties of the packaging material and does not include any perforations, holes, or vents that may be formed in the packaging material before, during, or after incorporation into an article.

[0034] The appearance of the smoother and rougher surfaces of the packaging material is different.

[0035] In some embodiments, the opacity of the smoother surface of the wrapper is greater than the opacity of the rougher surface of the wrapper. In some embodiments, the smoother surface of the packaging material has an opacity of at least 90% as measured according to standard ISO 2471. In some embodiments, the smoother surface of the packaging material has an opacity of at least about 91%, at least about 92%, at least about 93%, or at least about 94%. In some embodiments, the smoother surface of the packaging material has an opacity of about 93 to about 95%.

[0036] In some embodiments, the rougher surface of the packaging material has an opacity of at least 90%. In some embodiments, the rougher surface of the packaging material has an opacity of at least about 91%, at least about 92%, or at least about 93%. In some embodiments, the rougher surface of the packaging material has an opacity of about 93 to about 94%.

[0037] In some embodiments, the whiteness of the smoother surfaces of the wrapper is less than the whiteness of the rougher surfaces of the wrapper.

[0038] In some embodiments, the smoother surface of the packaging material has a whiteness index of at least 30, as measured according to standard ISO 11475. In some embodiments, the smoother surface of the packaging material has a whiteness index of at least about 31, at least about 32, at least about 33, or at least about 34. In some embodiments, the smoother surface of the packaging material has a whiteness index of from about 33 to about 36.

[0039] In some embodiments, the rougher surface of the wrapper has a whiteness index of at least 45. In some embodiments, the rougher surface of the wrapper has a whiteness index of at least about 46, at least about 47, at least about 48, or at least about 49, or at least about 50. In some embodiments, the rougher surface of the wrapper has a whiteness index of about 50 to about 52.

[0040] In some embodiments, the brightness of the smoother surface of the wrapper is less than the brightness of the rougher surface of the wrapper.

[0041] In some embodiments, the smoother surface of the packaging material has a color value, as measured according to standard ISO 2470-1, of at least 60. In some embodiments, the smoother surface of the packaging material has a color value of at least about 61, at least about 62, at least about 63, at least about 64, or at least about 65. In some embodiments, the smoother surface of the packaging material has a color value of about 65 to about 67.

[0042] In some embodiments, the rougher surface of the wrapping material has a brightness of at least 60 brightness units. In some embodiments, the rougher surface of the wrapping material has a brightness of at least about 61, at least about 62, at least about 63, at least about 64%, at least about 65, or at least about 66. In some embodiments, the wrapping material has a brightness of about 66 to about 67.

[0043] In some embodiments, the paper comprises fibers such as cellulose fibers. The fibers may be selected from the group consisting of flax fibers, softwood fibers, hardwood fibers, and mixtures thereof. In some embodiments, the paper comprises wood pulp.

[0044] In some embodiments, the wrapping material comprises fibers in an amount of about 10 to about 60% by weight (dry weight basis) of the wrapping material. In some embodiments, the wrapping material comprises a total amount of fibers of at least about 10 wt%, at least about 15 wt%, at least about 20 wt%, at least about 25 wt%, at least about 30 wt%, at least about 35 wt%, at least about 40 wt%, at least about 45 wt%, at least about 50 wt%, or at least about 55 wt%, based on the weight of the wrapping material (dry weight basis). Alternatively or additionally, the wrapping material comprises a total amount of fibers of about 60 wt% or less, about 55 wt% or less, about 50 wt% or less, about 45 wt% or less, about 40 wt% or less, about 35 wt% or less, about 30 wt% or less, or about 25 wt% or less, based on the weight of the wrapping material (dry weight basis).

[0045] In some embodiments, the packaging material comprises one or more binders selected from the group consisting of polyvinyl alcohol (PVA), gelatin, gum, acacia gum, starch, polysaccharides, pectin, alginate, chitosan, cellulose, and cellulose derivatives such as carboxymethylcellulose. In some embodiments, the wrapping material comprises one or more binders in an amount of about 1 to about 20% by weight (dry weight basis) of the wrapping material. In some embodiments, the wrapping material comprises at least about 1 wt%, at least about 2 wt%, at least about 3 wt%, at least about 4 wt%, at least about 5 wt%, at least about 7 wt%, at least about 10 wt%, at least about 12 wt%, at least about 15 wt%, or at least about 17 wt% total amount of binder, based on the weight of the wrapping material (dry weight basis). Alternatively or additionally, the wrapping material comprises no more than about 20 wt%, no more than about 18 wt%, no more than about 15 wt%, no more than about 13 wt%, no more than about 10 wt%, no more than about 8 wt%, no more than about 5 wt%, or no more than about 3 wt% total amount of binder, based on the weight of the wrapping material (dry weight basis).

[0046] In some embodiments, the wrapping material comprises a single sheet having a relatively rough first surface and a relatively smooth second surface.

[0047] As mentioned above, one option for preparing a sheet with one rough and one smooth surface is band casting.

[0048] 1 is a schematic diagram of a cross section of a packaging material 1 disclosed herein. The packaging material has a rough surface 2 and a smooth surface 3. When the packaging material is formed by band casting, the smooth surface 3 is the surface of the sheet formed in contact with the band, and the rough surface 2 is the top surface.

[0049] In some other embodiments, the packaging material comprises two or more stacked and bonded sheets, each having a different surface roughness, as shown in Figure 2. Both surfaces of each of these bonded sheets may have the same roughness, but one sheet may have a relatively rough surface and the other sheet has a relatively smooth surface. The sheets may be combined and bonded to produce a packaging material having one relatively rough surface and one relatively smooth surface.

[0050] 2 is a schematic diagram of a cross section of an alternative packaging material 1. The packaging material has a rough surface 2 and a smooth surface 3. The packaging material is formed by bonding two separate sheets together, with a first sheet 5 providing the smooth surface 3 and a second sheet 4 providing the rough surface 2. The first and second sheets may be bonded together with an adhesive (not shown).

[0051] In some embodiments, the wrapper comprises at least one flame retardant additive.

[0052] In some embodiments, the flame retardant additive is added to or applied to the sheet material used to form the wrapping material. The flame retardant additive may be incorporated into the sheet material, for example, during the manufacturing of the sheet material. Alternatively or additionally, the flame retardant additive may be applied to the sheet material, for example, in the form of a coating containing the additive, as described in more detail below. The presence of the flame retardant additive makes it much more difficult to ignite an article containing the wrapping material (as when lighting a conventional combustible cigarette), preventing the article from burning.

[0053] Packaging materials containing flame retardants enjoy the advantage that the article containing the packaging material can withstand higher temperatures without burning, thereby allowing for the release of more volatile material, which is desirable for end users of non-combustion aerosol delivery systems. Additionally, the present invention has the added advantage of being safer if a consumer attempts to ignite the article, as the present invention reduces the burning of the article.

[0054] Additionally, the flame-retardant packaging material provides an environmentally friendly alternative to other packaging materials known to function as flame retardants. For example, it is common to use aluminum as a packaging material to retard the combustion of aerosol-produced products. Because aluminum is energy-intensive to produce and difficult to recycle after use, the packaging material described herein is a more sustainable alternative. As described herein, flame-retardant properties can be achieved using additives such as sodium chloride (NaCl), which is a sustainable and available resource. Additionally, as described above, the packaging material may include paper or paper-like materials, which may be sustainably sourced and are biodegradable. The biodegradability of the packaging material is environmentally friendly and an attractive feature for consumers.

[0055] In some embodiments, the packaging material, including any flame-retardant coating applied thereto, comprises one or more flame-retardant additives in a total amount of at least about 3 wt%, about 3.5 wt%, about 4 wt%, about 4.5 wt%, about 5 wt%, about 5.5 wt%, about 6 wt%, about 6.5 wt%, about 7 wt%, about 7.5 wt%, about 8 wt%, about 9 wt%, about 10 wt%, about 20 wt%, about 30 wt%, about 40 wt%, about 50 wt%, about 60 wt%, about 70 wt%, about 65 wt%, about 60 wt%, about 55 wt%, or less than about 50 wt% (all calculated on a dry weight basis) of the packaging material.

[0056] For the avoidance of doubt, references to the amount of additive in a coating are references to the amount of additive added to the wrapping or coating and do not include any flame retardant material that may be present in the wrapping or coating without the addition of the flame retardant salts described herein.

[0057] The flame retardant additives used herein may be flame retardant salts, which are chemical compounds consisting of an ionic assembly of a cation and an anion. A salt as used herein is one whose anion and / or cation may be effective in retarding combustion. In some embodiments, the salt is an inorganic salt.

[0058] In some embodiments, the salt is a halide salt, i.e., has a halide anion. In some embodiments, the salt is a chloride salt or a bromide salt. The presence of high concentrations of chloride or bromide has been shown to retard combustion, as further described below.

[0059] In some embodiments, the salt may be an alkali metal salt, i.e., has an alkali metal cation. In some embodiments, the salt has an alkaline earth metal cation. In some embodiments, the salt has a zinc cation or an iron cation, such as a ferric cation or a ferrous cation. In some embodiments, the salt has an ammonium cation or a phosphonium cation.

[0060] In some embodiments, the salt may be an alkali metal halide such as sodium chloride or potassium chloride. The salt may be an alkaline earth metal halide such as magnesium chloride, calcium chloride, etc. The salt may be another metal halide such as zinc chloride or sodium bromide.

[0061] In some embodiments, the salt has a carboxylate anion, for example, the salt may be an alkali metal carboxylate such as potassium citrate, potassium succinate, potassium malate, potassium acetate, potassium tartrate, potassium oxalate, sodium citrate, sodium succinate, sodium acetate, or sodium malate.

[0062] In other embodiments, the salt has an anion selected from borate, carbonate, phosphate, sulfate, or sulfamate.

[0063] Factors that may influence the selection of the salt include, for example, the melting point, which is preferably at least 450°C. In some embodiments, the salt is soluble in water. In some embodiments, the salt is selected to provide a desired pH to the material to which it is added. In some embodiments, the salt does not significantly change the pH of the material.

[0064] In some embodiments, sodium chloride (NaCl) is the salt used. Packaging materials with high chloride content have proven difficult to burn. Additionally, sodium chloride is neutral, highly soluble, and does not affect the pH of the packaging material.

[0065] The flame retardant additive may include one salt or a combination of any number of salts disclosed herein or known in the art.

[0066] In some embodiments, the flame retardant salt comprises, consists essentially of, or consists of sodium chloride, potassium chloride, sodium bromide and / or potassium bromide.

[0067] Depending on the desired flame retardant or other physical properties, the salt component may be in free base form, salt form, or as a complex, or as a solvate.

[0068] Other flame retardant additives that may be used in the present invention include, for example, magnesium oxide. For example, a combination of sodium chloride and magnesium oxide may be included in the packaging material.

[0069] In some embodiments, the flame-retardant additive is added to the wrapping material in the form of a coating comprising the flame-retardant additive and a binder. In some embodiments, the coating is added to the sheet before it is used to wrap a section of aerosol-generating material. In other embodiments, the coating is added to the wrapping material once at a predetermined location around the aerosol-generating material, e.g., after it has been formed.

[0070] The binder may be a film-forming material that forms the basis of a coating that includes the flame-retardant additive. The flame-retardant additive may be disposed within or on a film formed from the binder. In some embodiments, the salt is mixed with the binder and applied to the packaging material, as described in more detail below.

[0071] The binder may adhere the flame retardant additive to the sheet material or packaging material. The binder may also be used to adhere the packaging material to itself and / or other components of the article.

[0072] Suitable binders include, for example, film-forming agents such as polyvinyl alcohol (PVA), gelatin, gums such as acacia gum, starch and its derivatives, polysaccharides, pectin, alginate, wood pulp, cellulose, cellulose derivatives such as carboxymethylcellulose, silica or silicone compounds, clay, and combinations thereof. Suitable binders include, for example, gelling agents such as one or more of alginate, pectin, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, pullulan, chitosan, xanthan gum, guar gum, carrageenan, agarose, acacia gum, fumed silica, PDMS, sodium silicate, kaolin, and polyvinyl alcohol. In some cases, the binder may include alginate and / or pectin, and the precursor material may further include a hardening agent (such as a calcium source) that can aid in the formation of an amorphous solid. In some cases, the binder may include calcium-crosslinked alginate and / or calcium-crosslinked pectin.

[0073] In some embodiments, the coating comprises at least about 0.1 wt%, about 0.2 wt%, about 0.3 wt%, about 0.4 wt%, about 0.5 wt%, about 0.6 wt%, about 0.7 wt%, about 0.8 wt%, about 0.9 wt%, about 1 wt%, about 10 wt%, about 20 wt%, about 30 wt%, about 35 wt%, about 40 wt%, about 45 wt%, or at least about 50 wt% binder (all calculated on a dry weight basis). In some cases, the coating comprises no more than about 70 wt%, about 65 wt%, about 60 wt%, about 55 wt%, about 50 wt%, about 45 wt%, about 40 wt%, about 35 wt%, or about 30 wt% binder (all calculated on a dry weight basis).

[0074] Articles for use in non-combustion aerosol delivery systems According to a further aspect of the present invention, there is provided an article for use in a non-combustion aerosol delivery system, the article comprising a rod containing segments of aerosol-forming material, the segments of aerosol-forming material at least partially wrapped in a wrapping material, the wrapping material having one rougher surface and one smoother surface. In some embodiments, the article comprises a wrapping material according to the first aspect of the present invention described herein.

[0075] Preferably, the rough surface of the wrapper is the inner surface when the wrapper encloses the aerosol-forming material, which helps to hold the aerosol-forming material in place within the article and reduces the amount of aerosol-forming material that falls off the rod during manufacture, transportation, storage, or use of the article.

[0076] FIG. 3 is a side cross-sectional schematic diagram of a portion of a consumable or article for use in an aerosol delivery system. The consumable or article portion includes an aerosol-generating segment 10 in the form of a cylindrical rod and an aerosol-generating material 11, which in this example includes cut rag reconstituted tobacco. The aerosol-generating material 11 can be any suitable material. The cylindrical section of the aerosol-generating material 11 is surrounded by a wrapping material 1, as shown in FIG. 1 or FIG. 2. The wrapping material 1 has a smooth surface 3 on the exterior of the aerosol-generating segment 10. A rough surface 2 of the wrapping material 1 faces and contacts the aerosol-generating material 11.

[0077] One end of the illustrated aerosol-generation segment 10 may abut a mouthpiece segment (not shown), which may include, for example, a body of material such as fibrous or filamentary tow and / or a cooling element. The other end of the aerosol-generation segment 10 may be the end of a consumable or article (the so-called distal end of the consumable).

[0078] In some embodiments, the packaging material of the article may have multiple vent holes and / or perforations. This can increase the amount of airflow within the article, improving the user's experience of the flavor profile of the aerosol-generating material and providing an appropriate pressure drop for ease of use. These vent holes and / or perforations may be located between about 0.5 mm and about 10 mm, about 1 mm and about 4 mm, or about 4 mm and about 8 mm from the distal end of the rod. The vent holes and / or perforations may be of any suitable size and / or number. The size, number, and location of the vent holes and / or perforations in the packaging material may be selected to provide an appropriate airflow. For example, a larger number of larger vent holes and / or perforations may introduce more air into the rod, increasing the airflow and thus providing an appropriate pressure drop.

[0079] An aerosol-generating material is a material that can generate an aerosol when energized, for example, by heating, irradiation, or in any other manner. The aerosol-generating material may be in the form of a solid, liquid, or gel, which may or may not contain active substances and / or flavorings. In some embodiments, the aerosol-generating material may comprise an "amorphous solid," which may alternatively be referred to as a "monolithic solid" (i.e., non-fibrous). In some embodiments, the amorphous solid may be a dry gel. An amorphous solid is a solid material that can retain some fluid, such as a liquid, within the amorphous solid. In some embodiments, the aerosol-generating material may comprise, for example, about 50 wt%, about 60 wt%, or about 70 wt% amorphous solid, up to about 90 wt%, 95 wt%, or 100 wt% amorphous solid.

[0080] In some embodiments, the article, packaging material, carrier, amorphous solid, aerosol-generating material, or any component of the article may further comprise one or more of an aerosol former material(s), functional material(s), flavor(s), botanical(s), active material(s), or aerosol modifier(s).

[0081] The one or more other functional materials may include one or more of a pH adjuster, a colorant, a preservative, a binder, a filler, a stabilizer, and / or an antioxidant.

[0082] The aerosol former material may include one or more components capable of forming an aerosol. In some embodiments, the aerosol former material may include one or more of glycerin, glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, mesoerythritol, ethyl vanillate, ethyl laurate, diethyl suberate, triethyl citrate, triacetin, diacetin mixtures, benzyl benzoate, benzyl phenylacetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

[0083] The one or more other functional materials may include one or more of a pH adjuster, a colorant, a preservative, a binder, a filler, a stabilizer, and / or an antioxidant.

[0084] As used herein, the terms "flavor" and "flavoring agent" refer to materials that may be used, where local regulations permit, to create a desired taste, aroma, or other somatic sensation in products intended for adult consumers.Flavors and flavoring agents include naturally occurring flavor materials, botanicals, extracts of botanicals, synthetically derived materials, or combinations thereof (e.g., tobacco, cannabis, licorice, hydrangea, eugenol, magnolia leaf, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, aniseed, cinnamon, turmeric, Indian spices, Asian spices, herbs, wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime). , tropical fruits, papaya, rhubarb, grapes, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, khat, eggplant, betel nut, shisha, pine, honey essence, rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cassia, caraway, cognac, jasmine, ylang ylang sage, fennel, wasabi, bell pepper, ginger, coriander, coffee, hemp, peppermint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, rooibos, flax, ginkgo biloba, hazel, hibiscus, bay leaf, yerba mate, orange peel, rose, tea such as green or black tea, thyme, juniper, elderflower, basil, bay leaf, cumin, oregano, paprika, rosemary, saffron, lemon peel, mint, shiso, curcuma, cilantro, myrtle, black currant, valerian, pimento, mace, damiento, maize The present invention may also include other additives such as joram, olive, lemon balm, lemon basil, chives, Calvi, verbena, tarragon, limonene, thymol, camphene), flavor enhancers, bitter taste receptor site blockers, sensory receptor site activators or stimulants, sugars and / or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharin, cyclamate, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and charcoal, chlorophyll, minerals, botanicals, or breath fresheners.The flavors and flavorings may be imitation, synthetic, or natural ingredients, or blends thereof. The flavors and flavorings may be in any suitable form, for example, a liquid such as an oil, a solid such as a powder, or a gas.

[0085] In some embodiments, the flavor comprises menthol, spearmint, and / or peppermint. In some embodiments, the flavor comprises cucumber, blueberry, citrus, and / or red berry flavor components. In some embodiments, the flavor comprises eugenol. In some embodiments, the flavor comprises flavor components extracted from tobacco. In some embodiments, the flavor comprises flavor components extracted from cannabis.

[0086] In some embodiments, the flavor may include a sensation elicitor intended to achieve somatic sensations typically chemically induced and perceived by stimulation of the fifth cranial nerve (trigeminal nerve) in addition to or instead of the aroma or taste nerves, and may include agents that produce heating, cooling, tingling, or numbing effects. A suitable heating agent may be, but is not limited to, vanillyl ethyl ether, and a suitable cooling agent may be, but is not limited to, eucolyptol, WS-3.

[0087] In some embodiments, the substance to be delivered comprises a flavor.

[0088] As used herein, an active substance may be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance may be selected from, for example, dietary supplements, nootropics, and psychoactive agents. The active substance may be naturally occurring or synthetically obtained. The active substance may include, for example, nicotine, caffeine, taurine, theine, vitamins such as B6, B12, or C, melatonin, cannabinoids, or components, derivatives, or combinations thereof. The active substance may include one or more components, derivatives, or extracts of tobacco, cannabis, or another botanical substance. In some embodiments, the substance to be delivered includes an active substance.

[0089] In some embodiments, the active agent comprises nicotine, hi some embodiments, the active agent comprises caffeine, melatonin, or vitamin B12.

[0090] As described herein, the active substance may include one or more components, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.

[0091] As described herein, the active substance may comprise or be derived from one or more botanical substances, or components, derivatives, or extracts thereof. As used herein, the term "botanical substance" includes any material derived from a plant, including, but not limited to, extracts, leaves, bark, fiber, stems, roots, seeds, flowers, fruits, pollen, husks, shells, etc. Alternatively, the material may comprise a synthetically derived active compound naturally occurring in the botanical substance. The material may be in the form of a liquid, gas, solid, powder, dust, crushed particles, granules, pellets, chips, strips, sheets, etc. Examples of botanical substances include tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo biloba, hazel, hibiscus, bay leaf, licorice, matcha, yerba mate, orange peel, papaya, rose, sage, tea such as green tea or black tea, thyme, cloves, cinnamon, coffee, aniseed, basil, bay leaf, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, and saffron. The active ingredient in the composition may be citric acid, lavender, lemon peel, mint, juniper, elderflower, vanilla, wintergreen, shiso, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, blackcurrant, valerian, pimento, mace, damiana, marjoram, olive, lemon balm, lemon basil, chives, kahlua, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca, ashwagandha, damiana, guarana, chlorophyll, baobab, or any combination thereof.The mint may be selected from the following mint varieties: Mentha arventis, Mentha cv, Egyptian mint (Mentha niliaca), Mentha piperita, Cologne mint (Mentha piperita citrata cv), Candy mint (Mentha piperita cv), Curly mint (Mentha spicata crispa), Kentucky Kernel mint (Mentha cardifolia), Horse mint (Mentha longifolia), Pineapple mint (Mentha suaveolens variegata), Pennyroyal mint (Mentha pulegium), Mentha spicata cv, and Apple mint (Mentha suaveolens).

[0092] In some embodiments, the active agent comprises or is derived from one or more botanical substances, or components, derivatives, or extracts thereof, and the botanical substance is tobacco.

[0093] In some embodiments, the active agent comprises or is derived from one or more botanical substances, or components, derivatives, or extracts thereof, and the botanical substances are selected from eucalyptus, star anise, cocoa, and hemp.

[0094] In some embodiments, the active agent comprises or is derived from one or more botanical substances, or components, derivatives or extracts thereof, and the botanical substances are selected from rooibos and fennel.

[0095] An aerosol modifier is a substance typically disposed downstream of the aerosol-generation region and configured to modify the generated aerosol, for example, by changing the taste, flavor, acidity, or another property of the aerosol. The aerosol modifier may be provided within an aerosol modifier-releasing component operable to selectively release the aerosol modifier.

[0096] The aerosol modifier may be, for example, an additive or an adsorbent. The aerosol modifier may include, for example, one or more of a flavoring, a colorant, water, and a carbon adsorbent. The aerosol modifier may be, for example, a solid, a liquid, or a gel. The aerosol modifier may be in the form of a powder, a string, or granules. The aerosol modifier may not include a filtering material.

[0097] In some embodiments, the article includes a substrate. A material may be present on or within a support to form the substrate. The support may be or comprise, for example, paper, card, paperboard, cardboard, reconstituted material, plastic material, ceramic material, composite material, glass, metal, or metal alloy.

[0098] In some embodiments, the support includes a susceptor. In some embodiments, the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on either side of the material.

[0099] In some embodiments, the article includes a flame retardant additive, such as those described elsewhere herein.

[0100] The article may be said to have a mouth end and a distal end. These names are based on the intended use of the article, with the mouth end being the end that a user draws on while the distal end is inserted into a heating device. In some embodiments, the article includes a burn-retardant additive disposed in the distal end.

[0101] For example, in some embodiments, the article includes a plug containing a flame retardant additive, which may be disposed at the distal end of the article.

[0102] In some embodiments, the article includes a coating comprising a flame-retardant additive. Optionally, the coating may be applied to a packaging material. The coating may be applied to the exterior or interior surface of the packaging material (if the packaging material forms part of the article).

[0103] Alternatively or additionally, the flame retardant additive may be applied to the aerosol-forming material, for example in the form of a coating.

[0104] Delivery System As used herein, a non-combustion aerosol delivery system is a delivery system that releases a compound from an aerosol-forming material without burning the aerosol-forming material, such as electronic cigarettes, tobacco heating products, and hybrid systems that use a combination of aerosol-forming materials to generate an aerosol.

[0105] In some embodiments, the non-combustion aerosol delivery system is a powered non-combustion aerosol delivery system.

[0106] According to the present disclosure, a "non-combustion" aerosol delivery system is one in which the constituent aerosol-generating materials (or components thereof) of the aerosol delivery system are not combusted or burned to facilitate delivery of at least one substance to a user.

[0107] In some embodiments, the non-combustion aerosol delivery system is a vaporization device or an electronic cigarette, also known as an electronic nicotine delivery system (END), although it should be noted that the presence of nicotine in the aerosol-generating material is not a requirement.

[0108] In some embodiments, the non-combustion aerosol delivery system is an aerosol-generating material heating system, also known as a non-combustion heating system. One example of such a system is a tobacco heating system.

[0109] In some embodiments, the non-combustion aerosol delivery system is a hybrid system that generates an aerosol using a combination of aerosol-generating materials, where one or more aerosol-generating materials can be heated. Each of the aerosol-generating materials can be, for example, in solid, liquid, or gel form and can contain nicotine or not. In some embodiments, the hybrid system includes a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material can include, for example, tobacco or a non-tobacco product.

[0110] Typically, a non-combustion aerosol delivery system may include a non-combustion aerosol delivery device and consumables, also referred to as articles throughout this disclosure, for use with the non-combustion aerosol delivery device.

[0111] In some embodiments, the non-combustion aerosol delivery system, e.g., the non-combustion aerosol delivery device, may include a power source and a controller. The power source may be, for example, an electrical power source or a heat-generating power source. In some embodiments, the heat-generating power source includes a carbon substrate that can be energized to deliver power in the form of heat to an aerosol-generating material or a heat-transfer material proximate the heat-generating power source.

[0112] In some embodiments, the non-combustion aerosol delivery system may include an area for receiving a consumable, an aerosol generator, an aerosol-generating area, a housing, a mouthpiece, a filter, and / or an aerosol modifier.

[0113] In some embodiments, consumables for use with non-combustion aerosol delivery devices may include aerosol-generating materials, aerosol-generating material storage regions, aerosol-generating material transfer components, aerosol generators, aerosol-generating regions, housings, packaging, filters, mouthpieces, and / or aerosol modifiers.

[0114] In some embodiments, the non-combustion aerosol delivery system includes a consumable. A consumable is an article containing or consisting of an aerosol-generating material, some or all of which is intended to be consumed during use by a user. The consumable may include one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol-generating area, a housing, a packaging material, a mouthpiece, a filter, and / or an aerosol modifier. The consumable may also include an aerosol generator, such as a heater, that generates heat upon use to cause the aerosol-generating material to generate an aerosol. The heater may include, for example, a combustible material, a material heatable by electrical conduction, or a susceptor.

[0115] In some embodiments, the non-combustion aerosol delivery system includes a susceptor. The susceptor is a material that can be heated by penetration of a varying magnetic field, such as an alternating magnetic field. The susceptor may be a conductive material, such that penetration of the varying magnetic field into the susceptor results in induction heating of the heating material. The heating material may be a magnetic material, such that penetration of the varying magnetic field into the heating material results in magnetic hysteresis heating of the heating material. The susceptor may be both conductive and magnetic, such that the susceptor can be heated by both heating mechanisms. A device configured to generate a varying magnetic field is referred to herein as a magnetic field generator.

[0116] In some embodiments, the non-combustion aerosol delivery system includes an aerosol generator. The aerosol generator is a device configured to generate an aerosol from an aerosol-generating material. In some embodiments, the aerosol generator is a heater configured to subject the aerosol-generating material to thermal energy to release one or more volatile substances from the aerosol-generating material and form an aerosol. In some embodiments, the aerosol generator is configured to generate the aerosol from the aerosol-generating material without heating. For example, the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, pressure increase, or electrostatic energy.

[0117] 4 shows an example of a non-combustion aerosol delivery device 100 for generating an aerosol from an aerosol-generating medium / material, such as the aerosol-generating materials of the consumables 110 described herein. Generally, device 100 can be used to heat a replaceable article 110 comprising an aerosol-generating medium, such as an article described elsewhere herein, to generate an aerosol or other inhalable medium that is inhaled by a user of device 100. Device 100 and replaceable article 110 together form a system.

[0118] Device 100 comprises a housing 102 (in the form of an outer cover) that surrounds and contains the various components of device 100. Device 100 has an opening 104 in one end through which an item 110 can be inserted for heating by a heating assembly. In use, item 110 can be fully or partially inserted into the heating assembly, where it can be heated by one or more components of the heater assembly.

[0119] The device 100 in this example includes a first end member 106 that includes a lid 108 that is movable relative to the first end member 106 to close the opening 104 when the item 110 is not in place. In Figure 4, the lid 108 is shown in an open configuration, but the lid 108 can be moved to a closed configuration. For example, a user can slide the lid 108 in the direction of arrow "B."

[0120] Device 100 may also include user-operable control elements 112, such as buttons or switches that, when pressed, operate device 100. For example, a user may turn device 100 on by operating switch 112.

[0121] Device 100 may also include an electrical component such as a socket / port 114 that can accept a cable for charging a battery of device 100. For example, socket 114 may be a charging port, such as a USB charging port. [Example]

[0122] Example 1 - Preparation of band cast sheet material Sheet material was prepared by band casting from a slurry containing the following ingredients: fiber, binder, filler, and water. The slurry was cast as a sheet onto the belt and allowed to dry. The drying mechanism involved applying steam below the band and hot air above the band. The dried sheet was removed from the belt. The dried sheet had a smooth surface that was in contact with the belt and a rough surface that was uppermost when the slurry was cast onto the belt.

[0123] The first dry sheet may have the composition shown in Table 1.

[0124] [Table 1]

[0125] Additional sheets were made in the same manner using slurries that further contained optional additives according to the present disclosure that may impart some flame retardant properties to the resulting sheets. These additives were sodium chloride and magnesium oxide.

[0126] This alternative dry sheet had the composition shown in Table 2.

[0127] [Table 2]

[0128] The dried sheets had the properties shown in Table 3.

[0129] [Table 3]

[0130] Example 2 - Preparation of an aerosol product The sample sheet material described above was used to make an aerosol product comprising a rod of aerosol-forming material. The sheet material was fed through a machine and used to wrap the rod of aerosol-forming material.

[0131] The rate at which sticks could be produced (using the same machine and the same aerosol-generating material) was compared to the rate at which conventional paper and aluminum foil wrappers were used. The observed machine speeds are shown in Table 4 and demonstrate the significant technical advantages associated with the wrappers of the present invention.

[0132] [Table 4]

[0133] Example 3 - Evaluation of the quality of the produced rods Sample aerosol product articles produced according to Example 2 using cut-rag aerosol-generating materials were tested to evaluate the ability of the wrapper to retain the aerosol-generating material within the article. A simple test involved blowing through the article, and it was found that none of the cut-rag aerosol-generating materials could be blown out in this manner. This is a subjective assessment of how well the tobacco was retained within the rod, and the results showed a greater resistance to "end shedding" than observed with similar articles having traditional paper or foil wrappers.

[0134] Example 4 - Evaluation of the Flame Retardant Properties of Packaging Materials The ability of packaging materials according to some embodiments of the present invention to withstand delayed combustion of consumable products was tested. Consumable products intended for heating but not combustion were manufactured using a series of different packaging materials using standard components. Samples were prepared using a traditional paper packaging material (control), an aluminum foil packaging material (control), or a packaging material disclosed herein (test).

[0135] Test wrappers were prepared using the band cast paper described in Example 1.

[0136] The consumables tested were standard demi-slim format with a total stick length of 75 mm containing a 34 mm tobacco rod. The filter section contained a cellulose acetate commercial specification filter without a capsule.

[0137] The consumables were configured to have 70% ventilation for the control sample and 50% ventilation for the test wrapper. These THP consumables were then smoked in a smoking machine and smoked (55 ml puffs every 30 seconds, 10 puffs total).

[0138] The start and end lengths, as well as the start and end masses, were measured to assess how much of the consumable was consumed. Additionally, the puff emissions were captured on a pad to assess the start and end pad masses. Finally, the number of puffs required after ignition before the consumable was extinguished was assessed. The results in the table below represent the average of five samples.

[0139] [Table 5]

[0140] [Table 6]

[0141] [Table 7]

[0142] The data show that consumables with traditional paper wrappers can be lit like combustible cigarettes, and that puffing the lit consumables maintains combustion in most samples, allowing the consumables to be smoked with the aerosol-generating section smoked with concomitant emissions.

[0143] In contrast, aluminum foil wrapping used on THP consumables to prevent burning and smoking of consumables such as combustible cigarettes has been shown to be effective in this regard: the length of the consumable remained unchanged, the mass remained substantially unchanged, and there were no significant emissions.

[0144] Test strip wrappers were shown to perform similarly to aluminum foil wrappers, with only slightly greater mass loss and discharge onto the pad. These wrappers are therefore an effective alternative to aluminum foil wrappers for preventing combustion and smoking of THP consumables, such as combustible cigarettes.

[0145] The various embodiments described herein are presented solely to aid in the understanding and teaching of the claimed features. These embodiments are provided only as a representative sample of embodiments and are not exhaustive and / or exclusive. The advantages, embodiments, examples, functions, features, structures, and / or other aspects described herein should not be construed as limitations on the scope of the invention as defined by the claims or limitations on the equivalents of the claims, and it should be understood that other embodiments may be utilized and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the present invention may suitably comprise, consist of, or consist essentially of any suitable combination of the disclosed elements, components, features, parts, steps, means, etc., other than those specifically described herein. Additionally, the present disclosure may include other inventions not currently claimed but which may be claimed in the future.

Claims

1. A packaging material for use with an aerosol product, the packaging material having a first surface having a Bendtsen Roughness of at least about 1200 ml / min and a second surface having a Bendtsen Roughness of no more than about 500 ml / min.

2. Approximately 20 to approximately 90g / m ２ 10. The packaging material of claim 1 having a weight of

3. The packaging material according to claim 1 or 2, having a thickness of about 50 to about 200 μm.

4. The packaging material of any one of claims 1 to 3, having a dry tensile strength of at least about 35 N / 15 mm.

5. The packaging material according to any one of claims 1 to 4, having an air permeability of about zero (0) CU (Cholesta Units).

6. 6. The packaging material of any one of claims 1 to 5, wherein the opacity of the smoother surface of the packaging material is greater than the opacity of the rougher surface of the packaging material.

7. 7. The packaging material of any one of claims 1 to 6, wherein the lightness of the smoother surface of the packaging material is less than the lightness of the rougher surface of the packaging material and / or the whiteness of the smoother surface of the packaging material is less than the whiteness of the rougher surface of the packaging material.

8. The packaging material according to any one of claims 1 to 7, comprising one or more binders.

9. 10. The packaging material of claim 8, comprising one or more binders in an amount of about 1 to about 20% by weight (dry weight basis) of the packaging material.

10. The packaging material of any one of claims 1 to 9, comprising a single sheet.

11. A packaging material according to any one of claims 1 to 9, comprising two superimposed and bonded sheets, each having a different surface roughness.

12. The packaging material of any one of claims 1 to 11, comprising at least one flame retardant additive.

13. 13. The wrapping material of claim 12, wherein the at least one flame retardant additive is present in an amount of from about 3 to about 70% by weight (dry weight basis) of the wrapping material.

14. 14. The packaging material of claim 12 or 13, wherein the flame retardant additive comprises an alkali metal halide or alkaline earth metal oxide, or both.

15. The packaging material of any one of claims 12 to 14, wherein the flame retardant additive is incorporated into the packaging material or the flame retardant additive is included in a coating on the surface of the packaging material.

16. a rod containing an aerosol-forming material; The packaging material according to any one of claims 1 to 15, 1. An article for use in a non-combustion aerosol delivery system, comprising:

17. 17. The article of claim 16, wherein the article has a mouth end and a distal end, the article including a flame retardant additive disposed at the distal end.

18. 18. The article of claim 16 or 17, comprising a plug including the flame retardant additive.

19. 18. The article of claim 16 or 17, comprising a coating comprising the flame retardant additive.

20. 20. The article of claim 19, wherein the coating is applied to the packaging material or the coating is applied to the aerosol-forming material.

21. The article of any one of claims 16 to 20, wherein the packaging material comprises vents or perforations.

22. A non-combustion aerosol delivery system comprising the article of any one of claims 16 to 21.

23. A method for producing the packaging material according to any one of claims 1 to 15, comprising the steps of: forming a slurry; Casting the slurry onto a band or belt; drying the slurry; removing the dried slurry from the band or belt; A method comprising:

24. 1. Use of a band cast sheet material as packaging in an article for use in a non-combustion aerosol delivery system.

25. Use of a packaging material according to any one of claims 1 to 15 to reduce loss of aerosol-forming material from an article for use in a non-combustion aerosol delivery system.

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