Filter elements and products for smoking products

Abstract

This utility model relates to a filter element and article for smoking articles, the filter element comprising at least: - a filter core arranged to provide a flow path for aerosols and / or smoke to be delivered to a user, - a wrapping material surrounding the filter core, wherein the filter core comprises: - a first filter material, - a second filter material.

Description

Technical Field

[0001] This invention provides an oral cavity or filter element for use with smoking products such as cigarettes, heated tobacco products, or heated non-combustible products. Background Technology

[0002] Mouthpieces or filter elements used in smoking products, such as cigarettes, heated tobacco products, or heated non-burning (HNB) products, can be manufactured from a variety of different materials. Currently, the main component of commercial cigarette filters contains a significant amount of cellulose acetate. However, cellulose acetate is a plastic and has low biodegradability, and therefore, cigarette filters (and cigarette butts) containing cellulose acetate may persist in the environment for a long time. Therefore, there is growing interest in filter elements (such as mouthpieces) that exhibit better biodegradability and / or contain more sustainable materials.

[0003] Paper is an alternative filter material to cellulose acetate. Filters incorporating paper as a filter material are well-known in the art. Compared to cellulose acetate filters, paper filters offer numerous advantages in terms of enhanced biodegradability and higher filtration efficiency at a given pressure drop. However, paper filters also have several disadvantages compared to cellulose acetate filters, such as potentially negatively impacting the taste of cigarettes, reduced filter firmness, and an unattractive appearance before and after smoking (due to staining). Furthermore, paper filters generally retain less toxic phenolic compounds and significantly more tar and nicotine compared to filters made from cellulose acetate. Therefore, the user experience is diminished compared to cigarettes with conventional cellulose acetate filters.

[0004] Therefore, it is desirable to provide an oral component or filter element for smoking products (e.g., cigarettes, heated tobacco products, heated non-burning (HNB) products) that provides acceptable filtration performance and user experience, while having improved biodegradability compared to conventional materials such as cellulose acetate, and / or that requires less unsustainable materials. Utility Model Content

[0005] According to the present invention, a first aspect relates to an oral cavity component or filter element, the oral cavity component or filter element comprising at least:

[0006] - A filter element, which is arranged to provide a flow path for the aerosols and / or smoke to be delivered to the user.

[0007] - A package that surrounds the filter element.

[0008] The filter element described herein comprises:

[0009] - First filter material,

[0010] - Second filter material.

[0011] The aforementioned oral or filter element has a filter core containing two filter materials, which allows the mixture to maintain a similar level of user experience and filtration performance as conventional and existing filters or oral devices, while allowing the use of sustainable materials, i.e., reducing the amount of conventional filter materials.

[0012] This utility model can be further defined by the following features, individually or in combination.

[0013] According to one embodiment, the first filter material comprises cellulose. Cellulose is a material having the formula (C6H2O) 10 O5) n The term "cellulose" refers to the aforementioned molecule, which is an important structural component of the primary cell wall of green plants. Specifically, cellulose can be found in wood in fibrous form, and cellulose from wood pulp has a typical chain length between 300 and 1700 units. Using cellulose to manufacture a primary filter material can increase the biodegradability of oral components or filter elements. Typically, the time it takes for cellulose to dissolve in the natural environment is several days or months. In this application, "cellulose" does not mean and / or specify "cellulose acetate," which is a different compound.

[0014] According to one embodiment, the first filter material contains more than 80% by weight of cellulose, preferably more than 90% by weight of cellulose, preferably more than 95% by weight of cellulose, preferably more than 98% by weight of cellulose, and preferably more than 99% by weight of cellulose. In other words, the first filter material is essentially made of cellulose. The applicant found that user tests comparing cigarettes with a filter tip according to this invention (the filter core has cellulose as the first filter material and the second filter material) with cigarettes with a conventional filter tip (the filter core has only cellulose acetate) concluded that users perceived less bitterness and less irritation in criteria such as smoothness, sweetness, ease of smoking, hay-like texture, woodiness, bitterness, dryness, and irritation, and similar results were observed for other criteria.

[0015] According to one embodiment, the first filter material comprises more than 70% by weight of cellulose fibers, preferably more than 80% by weight of cellulose fibers, preferably more than 90% by weight of cellulose fibers, preferably more than 95% by weight of cellulose fibers, and preferably more than 98% by weight of cellulose fibers. In this application, the fibers are elongated objects with a length greater than their other dimensions (such as transverse dimensions). Specifically, the length of the fiber is greater than 3 times its transverse dimension, preferably greater than 5 times its transverse dimension, preferably greater than 8 times its transverse dimension, and preferably greater than 10 times its transverse dimension.

[0016] According to one embodiment, the first filter material is paper, such as air-laid paper. Unlike conventional papermaking processes, air-laid paper does not use water as the fiber transport medium. Fibers are transported by air and formed into the structure of the paper. The air-laid structure can be isotropic. The raw material can be long-fiber cork pulp in roll form. The pulp undergoes fiber separation in a hammer mill. Fiber separation is the process of separating the fibers from each other before they enter the paper machine. Typically, air-laid paper can consist of at least 85% fiber. The binder can be applied as a spray or foam. Alternatively, additional fibers or powder can be added to the pulp, which can then be activated and cured by heating. In other words, the first filter material is not a wet-laid paper, and / or the first filter material is not manufactured using water as the fiber transport medium.

[0017] According to one embodiment, the first filter material is in the shape of a strip or sheet, the strip or sheet having a content of 35 g / m³. 2 Up to 150g / m 2 Within the range, preferably from 40g / m 2 Up to 120g / m 2 Preferably from 50g / m 2 Up to 120g / m 2 Preferably at 50g / m 2 Up to 80g / m 2 Within the range, preferably from 45g / m 2 Up to 75g / m 2 Within the range, preferably within 50 g / m 2 Up to 70g / m 2 Within the range, preferably within 55 g / m 2 Up to 70g / m 2 Within the range, preferably within 55 g / m 2 Up to 65g / m 2 Within the range, preferably within 63 g / m 2 Up to 57g / m 2Basis weight within the range.

[0018] According to one embodiment, the first filter material is in the shape of a strip or sheet having a thickness ranging from 0.48 mm to 1.20 mm, preferably from 0.50 mm to 0.80 mm, preferably from 0.50 mm to 0.70 mm, preferably from 0.53 mm to 0.63 mm, and preferably from 0.55 mm to 0.61 mm.

[0019] According to one embodiment, the first filter material is substantially free of adhesives and / or substantially free of plastic materials and / or substantially free of cellulose acetate and / or substantially free of additives.

[0020] According to one embodiment, the oral cavity component or filter element comprises the first filter material in the range of 20% to 80% by weight of the total weight of the oral cavity component or filter element, preferably in the range of 25% to 75% by weight of the total weight of the oral cavity component or filter element, preferably in the range of 30% to 70% by weight of the total weight of the oral cavity component or filter element, preferably in the range of 35% to 65% by weight of the total weight of the oral cavity component or filter element, preferably in the range of 40% to 65% by weight of the total weight of the oral cavity component or filter element, preferably in the range of 45% to 65% by weight of the total weight of the oral cavity component or filter element, preferably in the range of 48% to 62% by weight of the total weight of the oral cavity component or filter element.

[0021] According to one embodiment, the first filter material is in the shape of an embossed strip or sheet, the embossing preferably being longitudinal creases substantially aligned with the axis of the oral cavity or filter element. In one embodiment, the embossing is provided by longitudinal creases spaced by a pitch ranging from 0.5 mm to 2 mm, preferably from 0.8 mm to 1.5 mm.

[0022] According to one embodiment, the first filter material is in the form of strips or sheets randomly distributed within the filter core.

[0023] According to one embodiment, the first filter material is located away from the package, preferably separated from the package by at least a portion of the second filter material. This ensures that the surface of the package is not deformed by the first filter material.

[0024] According to one embodiment, the first filter material is in the shape of a strip or sheet folded within a package, the strip or sheet having, in its folded state, a width in the transverse direction relative to the axis of the oral cavity or filter element ranging from 10 mm to 200 mm, preferably from 10 mm to 150 mm, preferably from 15 mm to 100 mm, preferably from 15 mm to 85 mm, preferably from 20 mm to 80 mm, preferably from 25 mm to 75 mm, preferably from 30 mm to 70 mm, preferably from 35 mm to 65 mm, preferably from 38 mm to 62 mm.

[0025] According to one embodiment, the second filter material comprises cellulose acetate. According to one embodiment, the second filter material is substantially composed of cellulose acetate.

[0026] According to one embodiment, the second filter material comprises a tow or a fluff material, the tow or the fluff material having:

[0027] - Filament deniers included in the range of 1.5 denier to 13 denier, preferably in the range of 3 denier to 9 denier, preferably in the range of 4 denier to 8 denier, and preferably in the range of 5 denier to 7 denier, and / or

[0028] - Total deniers included in the range of 9,000 to 55,000 deniers, preferably in the range of 10,000 to 24,000 deniers, preferably in the range of 13,000 to 21,000 deniers, and preferably in the range of 16,000 to 18,000 deniers.

[0029] According to one embodiment, the second filter material contains a plasticizer ranging from 2% to 20% by weight, preferably from 5% to 15% by weight, and preferably from 8% to 12% by weight of the second filter material.

[0030] According to one embodiment, the second filter material is in a rolled shape.

[0031] According to one embodiment, the package defines an external longitudinally extending tube and / or presents a circular cross-section.

[0032] According to one embodiment, the package has a perimeter ranging from 15.00 mm to 30.00 mm, preferably from 18.00 mm to 25.00 mm, preferably from 20.80 mm to 22.80 mm, preferably from 21.30 mm to 22.30 mm, and preferably from 21.60 mm to 22.00 mm.

[0033] According to one embodiment, the package is paper material having:

[0034] - Contains 20g / m 2 Up to 100g / m 2 Within the range, preferably within 20 g / m 2 Up to 50g / m 2 Within the range, preferably within 20 g / m 2 Up to 33g / m 2 Within the range, preferably within 23 g / m 2 Up to 30g / m 2 Weight within the range, and / or

[0035] - Porosity preferably measured according to ISO 2965:2009, and included in the range of 1000CU to 32000CU, preferably in the range of 2400CU to 24000CU, and preferably in the range of 5000CU to 8000CU.

[0036] According to one embodiment, the filter element is a single flow path for an oral cavity component or filter element.

[0037] According to one embodiment, the filter element is composed of the first filter material and the second filter material.

[0038] According to one embodiment, the filter element comprises:

[0039] - The first filter material, provided as paper, preferably air-laid paper, preferably composed of cellulose, and preferably having a density of 60 g / m³. 2 ±10% of the weight,

[0040] - The second filter material, provided as a tow in a crimped form, consists of cellulose acetate and optional plasticizer, and is 10% ± 10% by weight of the oral cavity component or filter element, having 6 denier ± 10% denier filaments and 17,000 denier ± 10% total denier.

[0041] The oral cavity component or filter element includes:

[0042] - The first filter material comprises between 45% and 65% by weight of the total weight of the oral cavity component or filter element.

[0043] - The second filter material is in the range of 35% to 55% by weight of the total weight of the oral cavity or filter element.

[0044] In one specific implementation, the oral cavity element or filter element includes:

[0045] - The first filter material comprises between 48% and 52% by weight of the total weight of the oral cavity component or filter element.

[0046] - The second filter material is in the range of 52% to 48% by weight of the total weight of the oral cavity or filter element.

[0047] In one specific implementation, the oral cavity element or filter element includes:

[0048] - The first filter material comprises between 58% and 62% by weight of the total weight of the oral cavity component or filter element.

[0049] - The second filter material is in the range of 42% to 38% by weight of the total weight of the oral cavity or filter element.

[0050] According to one embodiment, the oral cavity component or filter element has a length ranging from 50 mm to 160 mm, preferably 120 mm, and when measured according to CORESTA recommended method N°41 (June 2007), the oral cavity component or filter element has a pressure drop ranging from 20 mmWg to 1200 mmWg, preferably from 100 mmWg to 500 mmWg, preferably from 280 mmWg to 320 mmWg, preferably from 290 mmWg to 310 mmWg, preferably from 295 mmWg to 305 mmWg.

[0051] The second aspect of this invention relates to an article comprising an oral cavity or filter element according to the first aspect, such as a smoking article or an aerosol delivery article. Attached Figure Description

[0052] Other features and advantages of the present invention will become more apparent from the following detailed description of specific, non-limiting examples of the invention illustrated in the accompanying drawings, in which:

[0053] - Figure 1 This refers to a smoking article having an oral cavity or a filter element according to the present invention;

[0054] - Figure 2 express Figure 1 Oral components or filter elements of smoking products;

[0055] - Figure 3 This describes a simplified method for manufacturing oral cavity components or filter elements according to the present invention. Detailed Implementation

[0056] Figure 1 Article 100 is shown, which in this example is a smoking article, namely a cigarette, and the article includes:

[0057] - Oral component or filter element 110,

[0058] - 120 tobacco strips.

[0059] Typically, article 100 can be an elongated element along the longitudinal axis and can present the following characteristics:

[0060] - A diameter included in the range of 4mm to 12mm, preferably in the range of 5mm to 10mm, preferably in the range of 7mm to 9mm, and alternatively in the range of 5mm to 7mm.

[0061] - The length is included in the range of 30mm to 130mm, preferably in the range of 70mm to 100mm, alternatively in the range of 100mm to 130mm, alternatively in the range of 110mm to 125mm, alternatively in the range of 25mm to 60mm, and alternatively in the range of 30mm to 50mm.

[0062] In this case, article 100 is cylindrical or circular, but other shapes are also possible. In this example, article 100 can be a smoking article known as a conventional (combustible) cigarette, but article 100 can alternatively be a heated non-combustible product, a heated tobacco product, etc.

[0063] The tobacco strip 120 may contain formulated tobacco, and / or reconstituted tobacco, and / or impregnation medium to produce aerosols or smoke when heated and / or burned.

[0064] Figure 2 The oral cavity component or filter element 110 is shown separately. The oral cavity component or filter element 110 includes:

[0065] - Filter cartridge 111, which is arranged to provide a flow path for the aerosol and / or smoke originating from tobacco strip 120 to be delivered to the user.

[0066] - Package 114, which surrounds filter element 111.

[0067] Filter element 111 includes:

[0068] - First filter material 112,

[0069] - Second filter material 113.

[0070] In this example, the first filter material 112 can be a sheet or strip of paper, preferably an air-formed paper, preferably an air-formed paper composed of cellulose, and preferably has a density of 60 g / m³. 2 ±10% basis weight; preferably, the paper sheet or strip is curled to exhibit longitudinal creases spaced at a pitch of approximately 1 mm ±20%. Such air-laid paper is available from McAirlaid under the name Genia paper.

[0071] In this example, the second filter material 113 may be provided as a tow, in a crimped form, consisting of cellulose acetate and optionally a plasticizer, at 10% ± 10% by weight of the oral cavity or filter element, the tow having 6 denier ± 10% filament denier and 17,000 denier ± 10% total denier. Such cellulose acetate tows can be found in reference 6.0Y17D-W.

[0072] In this example, the first filter material 112 and the second filter material 113 can be randomly distributed within the filter element 111. Preferably, the first filter material 112 is never adjacent to the package 114, that is, the second filter material 113 is arranged between the package 114 and the first filter material 112. This ensures that the outer diameter of the oral cavity or filter element 110 is free from dents, wrinkles, and circular defects.

[0073] In this example, the oral cavity component or filter element 110 may include:

[0074] - The first filter material 112 comprises between 45% and 65% by weight of the total weight of the oral cavity component or filter element.

[0075] - The second filter material 113 is in the range of 35% to 55% by weight of the total weight of the oral cavity or filter element.

[0076] In one specific embodiment, the oral cavity element or filter element 110 may include:

[0077] - The first filter material 112 comprises between 48% and 52% by weight of the total weight of the oral cavity component or filter element.

[0078] - The second filter material 113 is in the range of 52% to 48% by weight of the total weight of the oral cavity or filter element.

[0079] In one specific embodiment, the oral cavity element or filter element 110 may include:

[0080] - The first filter material 112 comprises between 58% and 62% by weight of the total weight of the oral cavity component or filter element.

[0081] - The second filter material 113 is in the range of 42% to 38% by weight of the total weight of the oral cavity or filter element.

[0082] Package 114 can be provided as paper material, which has:

[0083] - Contains 20g / m 2 Up to 33g / m 2 Within the range, preferably within 23 g / m 2 Up to 30g / m 2 Weight within the range, and / or

[0084] - Porosity in the range of 2400 CU to 24000 CU, preferably in the range of 5000 CU to 8000 CU. Typically, the wrapping 114 surrounds the filter element 111 and is glued to the overlapping areas.

[0085] Figure 3 This describes a simplified process for manufacturing the oral cavity component or filter element 110.

[0086] The first branch of the process processes or transports the first filter material 112, the second branch of the process processes or transports the second filter material 113, the third branch of the process processes or transports the package 114, and the fourth branch of the process processes the strip-making operation.

[0087] In detail, the first filter material 112 is supplied as a large roll to the machine (“strip forming machine”) and spread or laid out at position A10.

[0088] The spread strip of the first filter material 112 is then fed to a strip coiling machine A20, which includes two rollers, each roller having grooves and ribs that intersect with those of the other roller. The interpenetration can be adjusted, and the passing of the strip of the first filter material 112 between the two rollers produces an embossed strip on the paper. In other words, the strip of the first filter material 112 between the two rollers of the strip coiling machine A20 exhibits, for example, creases with a pitch of 1 mm ± 20%.

[0089] The first branch of the process may also include a cutting tool (cutting roller or cutting disc) to adjust the width of the strips of the first filter material 112. For example, the width of the strips may be in the range of 35 mm to 65 mm. In one specific example, the width is 40 mm ± 2 mm, and in another specific example, the width is 60 mm ± 2 mm.

[0090] The second branch of the process begins at pick-up B10, where the second filter material 113 is collected for a bundle of cellulose acetate filaments. The filaments are then transported to a filament winding machine B20, which has two pairs of rollers to wind the filaments of the second filter material 113.

[0091] The third branch of the process includes an unwinding machine C10, which is used to unwind the roll of package 114 in a known manner.

[0092] The fourth branch of the process begins with the forming member D10 receiving the crimped strips of the first filter material 112 and the crimped bundles of the second filter material 113. The forming member may be a funnel with a converging shape to progressively receive and insert the crimped strips of the first filter material 112 and the crimped bundles of the second filter material 113. An air jet or air nozzle may be arranged in or around the forming member D10 to ensure proper compression of the materials. Due to this structure, the crimped strips of the first filter material 112 and the crimped bundles of the second filter material 113 are randomly and uniformly distributed in the available space to ensure reproducible characteristics of the oral cavity or filter element 110.

[0093] Once the crimped strips of the first filter material 112 and the crimped filaments of the second filter material 113 are gathered and compressed together through channels in the forming member D10, the material passes through a strip-forming member D20, which typically includes a strip and accessories, to progressively create an envelope around the gathered crimped strips of the first filter material 112 and the crimped filaments of the second filter material 113. The envelope, pre-glued to the overlapping area, is folded and heated to provide adhesion. The adhesive may include polyvinyl acetate adhesive and / or hot melt adhesive.

[0094] The strip of continuous wrapping around the filter material mixture is then passed through a cutter D30, which cuts the strip into filter sections, for example, 120 mm long. These 120 mm long filter sections can then be recut to provide mouthpieces or filter elements as components for the composite strip.

[0095] Some tests were conducted, and this serves as an example of a 120mm long filter section:

[0096] - The first filter material 112 has a mass of 60g / m³ 2 Cellulose paper with a thickness of 0.58 mm (Genia paper from McAirlaid).

[0097] - The second filter material 113 is a tow of cellulose acetate filaments with a denier of 6 denier and a total denier of 17,000.

[0098] - The total weight of the 120mm long filter section is 0.802g.

[0099] - The weight of the first filter material 112 is 0.4464g, which is 62% of the total weight of the 120mm long filter section.

[0100] - The weight of the second filter material 113 is 0.2805g, which is 35% of the total weight of the 120mm long filter section.

[0101] - The weight of the plasticizer added to the second filter material 113 is 10% of the total weight of the 120mm long filter section.

[0102] - The wrapping material is a paper material with a width of 24.5mm and a porosity of 6000CU.

[0103] The test component has an outer perimeter of 21.81 mm and exhibits a voltage drop of 301.99 mmWg.

[0104] A reference component is manufactured using only the second filter material 113 (cellulose acetate) as the filter material:

[0105] - The second filter material 113 is a tow of cellulose acetate filaments with a denier of 6 denier and a total denier of 17,000.

[0106] - The total weight of the 120mm long filter section is 0.6328g.

[0107] - The weight of the second filter material 113 is 0.507g, which is 80% of the total weight of the 120mm long filter section.

[0108] The reference component has an outer perimeter of 21.83 mm and exhibits a voltage drop of 300.81 mmWg.

[0109] Sensory testing was conducted as follows:

[0110] Number of members in the special task force: 14

[0111] Tobacco column: Sampoerna Mild

[0112] Descriptive tests:

[0113] A panel of experts compared cigarettes made with two types of filters, scoring each cigarette based on identified sensory attributes (smoothness, sweetness, ease of smoking, hay-like texture, woody notes, bitterness, dryness, and irritation).

[0114] Compared to the reference component, the test component (containing 62% by weight of the first filter material 112-cellulose paper and 35% by weight of the second filter material 113-cellulose acetate) provides a similar taste delivery to the reference component (containing only cellulose acetate filter material), with improvements in terms of irritation and bitterness.

[0115] Furthermore, it can be noted that the test component with the filter tip according to this invention requires less cellulose acetate material (cellulose acetate weight reduced by up to 45%). In addition, the first filter material 112 has much better biodegradability, which also reduces the overall environmental impact.

[0116] Of course, it should be understood that obvious improvements and / or modifications can be implemented by those skilled in the art, still within the scope of the present invention as defined by the appended claims.

Claims

1. A filter element, characterized in that, The filter element includes at least: - A filter element, which is arranged to provide a flow path for the aerosols and / or smoke to be delivered to the user. - A package surrounding the filter element. The filter element described herein comprises: - First filter material, - Second filter material, The first filter material and the second filter material are each randomly distributed within the filter element.

2. The filter element according to claim 1, characterized in that, The first filter material contains cellulose.

3. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 80% cellulose by weight.

4. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 90% cellulose by weight.

5. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 95% cellulose by weight.

6. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 98% cellulose by weight.

7. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 70% cellulose fiber by weight.

8. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 80% cellulose fiber by weight.

9. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 90% cellulose fiber by weight.

10. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 95% cellulose fiber by weight.

11. The filter element according to claim 1 or 2, characterized in that, The first filter material contains more than 98% cellulose fiber by weight.

12. The filter element according to claim 1 or 2, characterized in that, The first filter material is paper.

13. The filter element according to claim 1 or 2, characterized in that, The first filter material is an air-laid paper material.

14. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or a sheet having a basis weight comprised in the range of 35 g / m 2 to 150 g / m 2 .

15. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or a sheet having a basis weight ranging from 40 g / m 2 to 120 g / m 2 .

16. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, the strip or sheet having a content of 45 g / m³. 2 Up to 75g / m 2 Basis weight within the range.

17. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, the strip or sheet having a content of 50 g / m³. 2 Up to 70g / m 2 Basis weight within the range.

18. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, the strip or sheet having a content of 55 g / m 2 Up to 65g / m 2 Basis weight within the range.

19. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, the strip or sheet having a content of 63 g / m 2 Up to 57g / m 2 Basis weight within the range.

20. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, the strip or sheet having a thickness ranging from 0.48 mm to 1.20 mm.

21. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, and the strip or sheet has a thickness ranging from 0.48 mm to 0.68 mm.

22. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, and the strip or sheet has a thickness ranging from 0.53 mm to 0.63 mm.

23. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet, and the strip or sheet has a thickness ranging from 0.55 mm to 0.61 mm.

24. The filter element according to claim 1 or 2, characterized in that, The first filter material is free of adhesives and / or plastic materials and / or cellulose acetate and / or additives.

25. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 20% to 80% of the total weight of the filter element.

26. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 25% to 75% of the total weight of the filter element.

27. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 30% to 70% of the total weight of the filter element.

28. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 35% to 65% of the total weight of the filter element.

29. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 40% to 65% of the total weight of the filter element.

30. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 45% to 65% of the total weight of the filter element.

31. The filter element according to claim 1 or 2, characterized in that, The filter element comprises, by weight, the first filter material ranging from 48% to 62% of the total weight of the filter element.

32. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of embossed strips or sheets.

33. The filter element according to claim 32, characterized in that, The embossing consists of longitudinal creases aligned with the axis of the filter element.

34. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of strips or sheets randomly distributed within the filter core.

35. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 10 mm to 200 mm in its folded state.

36. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 15 mm to 85 mm in its folded state.

37. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 20 mm to 80 mm in its folded state.

38. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 25 mm to 75 mm in its folded state.

39. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 30 mm to 70 mm in its folded state.

40. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 35 mm to 65 mm in its folded state.

41. The filter element according to claim 1 or 2, characterized in that, The first filter material is in the shape of a strip or sheet folded within the package, the strip or sheet having a width in the transverse direction relative to the axis of the filter element ranging from 38 mm to 62 mm in its folded state.

42. The filter element according to claim 1 or 2, characterized in that, The second filter material contains cellulose acetate.

43. The filter element according to claim 1 or 2, characterized in that, The second filter material comprises filaments or fluff, the filaments or fluff having: - Filament deniers ranging from 1.5 denier to 13 denier, and / or - Total deniers included in the range of 9,000 to 55,000 deniers.

44. The filter element according to claim 43, characterized in that, The filament bundle or the pile material has a filament denier ranging from 3 to 9 denier.

45. The filter element according to claim 43, characterized in that, The filament bundle or the pile material has a filament denier ranging from 4 denier to 8 denier.

46. ​​The filter element according to claim 43, characterized in that, The filament bundle or the pile material has a filament denier ranging from 5 to 7 denier.

47. The filter element according to claim 43, characterized in that, The filament or the pile material has a total denier in the range of 10,000 to 24,000 deniers.

48. The filter element according to claim 43, characterized in that, The filament or the pile material has a total denier in the range of 13,000 to 21,000 deniers.

49. The filter element according to claim 43, characterized in that, The filament or the pile material has a total denier in the range of 16,000 to 18,000 deniers.

50. The filter element according to claim 1 or 2, characterized in that, The second filter material contains plasticizer in the range of 2% to 20% by weight of the second filter material.

51. The filter element according to claim 1 or 2, characterized in that, The second filter material contains plasticizer in the range of 5% to 15% by weight of the second filter material.

52. The filter element according to claim 1 or 2, characterized in that, The second filter material contains plasticizer in the range of 8% to 12% by weight of the second filter material.

53. The filter element according to claim 1 or 2, characterized in that, The package defines an external longitudinally extending tube and / or presents a circular cross-section.

54. The filter element according to claim 1 or 2, characterized in that, The package has a circumference ranging from 15.00 mm to 30.00 mm.

55. The filter element according to claim 1 or 2, characterized in that, The package has a circumference ranging from 20.80 mm to 22.80 mm.

56. The filter element according to claim 1 or 2, characterized in that, The package has a circumference ranging from 21.30 mm to 22.30 mm.

57. The filter element according to claim 1 or 2, characterized in that, The package has a circumference ranging from 21.60 mm to 22.00 mm.

58. The filter element according to claim 1 or 2, characterized in that, The package is made of paper, and the paper has the following characteristics: - Contains 20g / m 2 Up to 100g / m 2 Weight within the range, and / or - Porosity in the range of 1000CU to 32000CU.

59. The filter element according to claim 58, characterized in that, The paper material contains 20g / m³ 2 Up to 33g / m 2 Weight within the specified range.

60. The filter element according to claim 58, characterized in that, The paper material contains 23g / m³ 2 Up to 30g / m 2 Weight within the specified range.

61. The filter element according to claim 58, characterized in that, The paper has a porosity ranging from 2400 CU to 24000 CU.

62. The filter element according to claim 58, characterized in that, The paper has a porosity ranging from 5000 CU to 8000 CU.

63. The filter element according to claim 1 or 2, characterized in that, The filter element has a single flow path.

64. The filter element according to claim 1 or 2, characterized in that, The filter element is composed of the first filter material and the second filter material.

65. The filter element according to claim 1 or 2, characterized in that, The filter element has a length ranging from 50 mm to 160 mm and, when measured according to CORESTA recommended method N°41, has a pressure drop ranging from 20 mmWg to 1200 mmWg.

66. The filter element according to claim 65, characterized in that, The filter element has a length of 120 mm.

67. The filter element according to claim 65, characterized in that, The filter element has a pressure drop ranging from 280 mmWg to 320 mmWg.

68. The filter element according to claim 65, characterized in that, The filter element has a pressure drop ranging from 290 mmWg to 310 mmWg.

69. The filter element according to claim 65, characterized in that, The filter element has a pressure drop ranging from 295 mmWg to 305 mmWg.

70. An article characterized in that, The article comprises a filter element according to any one of claims 1 to 69.

71. The article of claim 70, characterized in that, The article is a smoking article or an aerosol delivery article.

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