Wrapper for the production of a filled smoking product, use of the wrapper for producing a filled cigar or a filled cigarillo and method for producing the wrapper
Patent Information
- Application Number
- EP2023810332
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-02-15
- Filing Date
- 2023-11-21
- Publication Date
- 2025-12-24
AI Technical Summary
Stuffed smoking products often experience blockages in the smoke guide channels due to high stuffing density, leading to inefficient smoke passage and potential filter obstruction during use.
A wrap design featuring ceramic plugs with smoke guide channels arranged on different cutting planes, including recessed areas and varying opening sizes, which provide emergency passages and optimal filtration to prevent blockages and ensure smooth smoke flow.
The wrap effectively maintains clear smoke guide channels even under high compression, allowing for consistent and efficient smoke passage without blocking, ensuring that stuffed smoking products can be enjoyed without being discarded due to improper filling.
Smart Images
Figure EP2023082588_22082024_PF_FP
Abstract
Description
[0001] Wrap for producing a stuffed smoking product, use of the wrap for producing a stuffed cigar or a stuffed cigarillo, and method for producing the wrap
[0002] The invention relates to a roll for producing a stuffed smoking article, use of the roll for producing a stuffed cigar or a stuffed cigarillo and method for producing the roll.
[0003] Rolls are sold in the tobacco industry under various English-language names. They are known as pre-rolled cones or pre-rolled blunts.
[0004] DE 20 2004 007 772 U1 discloses a wrap of plant leaves into which a filter made of palm leaves is inserted. Alternatively, an empty filter sleeve with end pieces can be used for particle filtration. To ensure this is effective, the openings in the end pieces should be very small. Furthermore, the sleeve can be empty or filled with activated carbon.
[0005] WO 2021 / 004701 A1 discloses a prerolled cone with a factory-prefabricated filter sleeve with a conical paper sleeve, wherein the filter sleeve is part of an activated carbon filter. The schematically depicted end pieces for closing the filter sleeve are made of ceramic and are depicted as truncated cones.
[0006] DE 10 2020 131 196 A1 also discloses a prerolled cone with a conical activated carbon filter. In this variant, too, the end faces of the ceramic plugs are essentially flat or slightly curved.
[0007] Also relevant are DE 296 05 497 U1 and DE 20 2022 105 724 U1 , which each have ceramic plugs with openings in two cutting planes.
[0008] Prerolled cones offer the advantage that users can choose the type of tobacco they want to fill them with. Furthermore, their shape eliminates the sometimes demanding task of rolling a tobacco by hand or using a machine.
[0009] The difference between this method of inserting the shredded tobacco, including cannabis-containing tobacco, and industrially manufactured cigarettes or hand-rolled cigars is that the tobacco is not rolled but rather stuffed. The stuffing and the associated compression can vary greatly from user to user. If the packing density is too high, the smoke ducts may become blocked by the tobacco.
[0010] Ceramic plugs with differently sized smoke channel openings on two cutting planes are known from DE 296 05 497 U1 and DE 20 2022 105 724 U1. However, both types of ceramic plugs would not provide sufficient protection against clogging in filled smoking products.
[0011] The object of the invention is therefore to provide a roll for the production of stuffed smoking products, which enables the smoke guide channels to be kept clearer when compressing the smoking product during stuffing or filling of the roll.
[0012] The object of the invention is achieved by providing a winding with the features of claim 1.
[0013] The roll according to the invention is intended for the production of a stuffed smoking product. Smoking products are typically rolled. However, a smoking product using a pre-wound but unfilled roll, also known as a prefilled cone or prefilled blunt, cannot typically be produced by rolling or twisting.
[0014] The coil has a coiling tube that defines a receiving space. This receiving space is open at the end and can be filled with tobacco or another smoking product made from ground plant matter.
[0015] At the other end of the receiving chamber, a filter is arranged to filter harmful substances from smoke when burning smoking products, especially tobacco.
[0016] The filter has a sleeve and two ceramic plugs arranged at the end of the sleeve with an inside facing the inside of the sleeve, i.e. towards the filter medium, and an outside.
[0017] The filter medium is arranged inside the sleeve between the ceramic plugs. The ceramic plug is interspersed with several smoke channels. The ceramic plug has a flat or preferably inwardly curved end face along its outer surface.
[0018] The said end face is interrupted by at least one recess, preferably a recess groove.
[0019] To prevent the filter from becoming blocked, the openings of the smoke guide channels are arranged on different parallel cutting planes of the longitudinal axis of the filter or the ceramic plug.
[0020] An opening of a first smoke channel of the aforementioned smoke channels ends, at least in part, on a first sectional plane perpendicular to the longitudinal axis of the filter. "Partially" means that only a portion of the opening can be arranged on this sectional plane, while another portion can be arranged on a different sectional plane.
[0021] An opening of a second smoke channel ends at least partially along a second cutting plane perpendicular to the longitudinal axis of the filter.
[0022] An opening in the third smoke guide duct ends, at least in part, along a third sectional plane perpendicular to the longitudinal axis of the filter. It is understood that the three sectional planes are offset and arranged parallel to each other along the longitudinal axis. The respective opening is located at the end of the smoke guide duct.
[0023] Three openings are designed with different sizes, so that the respective smoke ducts are not identical in shape. The opening of the first smoke duct is larger than the opening of the second smoke duct, which in turn is larger than the opening of the third smoke duct.
[0024] The staggered arrangement of the smoke channel openings effectively prevents complete blockage when stuffing the coil. Even if the openings on two cutting levels become blocked due to extreme force, the opening(s) on the third cutting level provide emergency passage and simultaneous filtration of smoke from the smoking product.
[0025] Further advantageous embodiments of the invention are, inter alia, the subject matter of the dependent claims. Thus, at least one opening, also referred to as a mouth, of a first of the smoke guide channels can advantageously extend at least partially along the end face. Furthermore, an opening of a second of the smoke guide channels extends at least partially along the recess, preferably a recess groove.
[0026] When filling the coil to make a cigarette, cigar, or cigarillo, the openings on the front can become clogged. To ensure optimal intake without clogging, other openings in the filter are recessed. Particularly in the recessed groove design, a recessed and thus protected channel can be provided to connect the individual openings, allowing the smoke to be distributed across multiple openings.
[0027] Preferably, several openings of several smoke guide channels extend both along the front surface and along the recess, preferably the recess groove.
[0028] The opening cross-sections of the first and second smoke guide channels can preferably be different sizes. This ensures better suction and ventilation during the combustion phase, making it easier to light a smoking product, such as a cigar. If the smoking product burns for a longer period, suction can further compress the tobacco and thus block individual channels on the front face. In this case, the openings with a smaller opening cross-section still allow sufficient passage of smoke gases through the filter.
[0029] The length of the first smoke duct may also be greater than the length of the second smoke duct.
[0030] For optimal distribution of the flue gases in plugged flue gases, at least six smoke guide channels have proven to be advantageous, which are provided concentrically around a longitudinal axis of the filter in the ceramic plug.
[0031] Furthermore, for optimal distribution of the smoke guide channels, it is advantageous if the ceramic plug is rotationally symmetrical when rotated by less than 180°, preferably concentric when rotated by 120° or less, e.g., 90°. In addition to the variant with a single recess, e.g., a recessed groove, multiple recesses, preferably several fluidically interconnected recesses, can be provided in the ceramic plug.
[0032] In addition to the recessed groove, the ceramic plug can have a central recess, which is recessed in the ceramic plug relative to a bottom surface of the recessed groove, wherein the ceramic plug has at least the third smoke guide channel, which is arranged in the central recess, wherein the third smoke guide channel is particularly preferably arranged on the longitudinal axis of the filter. This additional recessed recess enables emergency passage in the event that the deeper openings of the recessed groove also become blocked. This means that high-quality filled smoking products do not have to be discarded due to improper filling, but can still be enjoyed. However, a greater vacuum may be required for suction.
[0033] The filter medium can advantageously be activated carbon granules. Activated carbon has excellent filtering properties without emitting any pollutants itself.
[0034] The winding tube can advantageously be made from dried plant leaves, especially tobacco leaves. This allows a smoking product to be made from a purely natural plant base, without any chemical finishing steps. Bleaching agents and the like are therefore not included.
[0035] In order to achieve optimized smoke transmission and avoid tobacco being compressed at the end, it is advantageous if the outer circumference of the ceramic plug defines a circular area, with the end surface interrupted by the indentation(s) taking up less than 50% of this circular area, preferably less than 40%, preferably 25-35% of this circular area. The wide indentation or the multiple wide indentations enable optimized smoke dissipation. First, the tobacco is pressed against the end surface during packing. This is where the tobacco is compressed. This alone can lead to blockages. The indentations in the ceramic plug can break the press plug and tobacco can be loosely distributed partially into the indentation, ideally without completely filling it.Overall, the end face sections act as support pillars, absorbing a large portion of the force applied during packing, so that the tobacco is less compressed in the comparatively wide recesses, thus preventing clogging. Furthermore, the winding tube can be free of binding and adhesive agents. Especially when using plant leaves, the winding tube can be held together simply by adding liquid, such as water, and possibly subsequent drying.
[0036] The use of the wrap according to the invention for producing a cigar or cigarillo is particularly preferred. It is known that a cigar or cigarillo has a significantly higher packing density than a cigarette. For example, cigars burn approximately 3-5 times longer than cigarettes. The higher packing density also increases the risk of clogging. Therefore, the use of the above-described filter with the specially designed ceramic plugs is particularly preferred for this application.
[0037] Further according to the invention is a method for producing a winding according to the invention, wherein the method is characterized by the following steps
[0038] A Prepare the filter and one or more dried plant leaves
[0039] B wrapping the plant leaf or leaves around a cylindrical or conical portion of a tool, the filter being rolled up at the end during wrapping, and preferably drying the plant leaf or leaves in the wrapped state;
[0040] C Removing the tool.
[0041] By using the aforementioned tool, preferably a conical spindle, a high-quality precursor for a smoking product, such as a cigar, can be produced. Unlike factory production, this precursor can be realized as a hand-rolled product, e.g., in a factory-made production facility.
[0042] In a preferred variant of the method, the tool can be inserted into the sleeve of the filter in sections before wrapping, so that the filter sits on the tool and, after wrapping, has an edge projection relative to the ceramic plug on one side, in particular along the tobacco side of the filter.
[0043] When inserting the ceramic filter, it is pushed slightly, specifically a few millimeters, into the sleeve. This insertion makes the wrapping process easier and prevents the formation of a bead at the interface between the tool and the filter. It has been shown that this bead can break open, which is undesirable. This manufacturing variant is particularly easy to verify on the final product because the end ceramic sleeves are inserted at different depths into the filter sleeve.
[0044] The invention is explained in more detail with reference to the following figures using an exemplary embodiment. The individual details of the exemplary embodiment are in no way to be considered as limiting the subject matter of the present invention. Rather, the exemplary embodiment will reveal numerous further modifications to those skilled in the art, which also form part of the present invention. It shows:
[0045] Fig. 1 is a schematic representation of a filter for use in a winding according to the invention;
[0046] Fig. 2 is a plan view from the outside of a ceramic plug for use in a winding according to the invention;
[0047] Fig. 3 is a sectional view along the section plane BB of Fig. 1 through the ceramic plug; and
[0048] Fig.4 a rolled cigar which has a filter as a shaping element.
[0049] Fig. 1 shows schematically a filter 1 in an exploded view with a sleeve 2, a filter medium 3 arranged therein and two ceramic plugs 4 arranged at the ends. The ceramic plugs 4 are preferably conical.
[0050] The sleeve 2 can preferably be cylindrical. However, a conical shape, as shown in Fig. 2, is also conceivable. It is preferably a sleeve made of paper or plant material. It serves to hold a filter medium 3, which is present in granulated form within the sleeve and which is arranged axially between the ceramic plugs 4. The ceramic plugs are only shown schematically in Fig. 1. A detailed illustration of the ceramic plugs 4 is explained in more detail below with reference to Figs. 2 and 3. The ceramic plugs 2 used in the filter 1 are heat-resistant. Each ceramic plug 2 preferably consists of a ceramic body. Furthermore, the ceramic plug has smoke guide channels 5.The smoke guide channels extend, in a first ceramic plug 4a, from an outer side 6 of the cigar to the inner side 7 of the filter 1, which is in contact with the filter medium, and, in a second ceramic plug 4b, from an inner side 7 of the filter, which is in contact with the filter medium, to the outer side 8 of the ceramic plug 4b, which is in contact with the smoking article. Preferably, some, preferably all, of the smoke guide channels 5 are arranged parallel to the longitudinal axis A of the ceramic plug 2. The exact structure of the ceramic plug used in the filter 1 of Fig. 1 is explained in more detail in Figs. 2 and 3.
[0051] The smoke guide channels 5 preferably have an average diameter of more than 1 mm. One smoke guide channel 5 is arranged along the longitudinal axis A of the filter. All other smoke guide channels are arranged on a single circular path 10 around the longitudinal axis A, the center of which lies on the longitudinal axis A. In the variant shown in Figs. 2 and 3, six smoke guide channels 5 are arranged along the circular path 10. These smoke guide channels 5 are preferably arranged equidistant from one another.
[0052] The ceramic plug 4 particularly preferably has at least one conical outer surface 9. Particularly preferably, two outer surfaces 9 and 11 arranged one behind the other along the longitudinal axis A of the ceramic plug 4 with different angles of inclination can be provided. A first outer surface 11, which opens into the respective outer side 6 and 8, is cylindrical or has a smaller angle of inclination deviating from the cylindrical shape than the adjacent second outer surface 9. Thus, the second outer surface 9 has a greater conicity or is more tapered than the first outer surface 11. The second outer surface 9 opens into the inner side 7, with the outer surface 9 merging into the inner side 7 via a radially inwardly directed rounding. So that the cross-sections of the openings 12 of some smoke guide channels 5 are arranged at an angle other than 90°, preferably between 10-30°, to the longitudinal axis A of the filter 1.This results in a larger opening cross-section than the average diameter of the smoke ducts 5.
[0053] A further special feature of the design of the ceramic plugs 4 is the arrangement of recessed grooves 13 in the outer sides 6 and 8 of the ceramic plug. The outer openings 14, 15, and 16 of individual smoke guide channels 5 can extend at an angle other than 90° to the longitudinal axis of the filter 1. The respective ceramic plug 4 has an outer end face 17, which is interrupted by the recessed grooves 13 and is divided into several projection segments 18. The openings 14 are arranged at least in regions on the end face 17. The respective recessed groove 13 has a bottom surface 19. The openings 15 are arranged at least in regions on the bottom surface. Thus, the openings 14 and 15 extend at least in regions along two or more other parallel sectional planes S1 and S2 through the longitudinal axis A.
[0054] The opening 16 of the centrally arranged smoke guide channel 5 is also arranged in a recess 20. The recess 20 can be recessed even further in the ceramic plug 4 compared to the bottom surface 19 of the recess groove 13. As can be seen in Fig. 2, the openings 14 and 15 start at the end surface 17 or the bottom surface 19 and extend into the recess 20. As a result, the opening cross-sections of the openings 14 and 15 are larger than the mean cross-section of the smoke guide channels 5. The opening cross-sections of the openings 14 and 15 on the circular path 10 are advantageously of different sizes, so that the smoke guide is optimized and, at the same time, the blocking tendency of the smoke guide channels is different.
[0055] As a consequence of the previous description, the lengths of the smoke guide ducts vary. The same applies to the third, centrally located smoke duct.
[0056] In the context of the present invention, this length is determined between the furthest points of the terminal openings of the smoke ducts. If the openings also extend partially in the direction of the longitudinal axis A, the outermost point of the respective opening is to be chosen for determining the length.
[0057] The average width of the recessed grooves 13 can preferably be more than 1.5 mm, particularly preferably more than 2 mm, in particular between 2.5 and 3 mm. The recessed grooves 13 extend radially from the longitudinal axis A. Fig. 1 shows three recessed grooves 13, which extend over 10-45% of the diameter.
[0058] However, it is also possible for the ceramic plug 4 to have a single recessed groove with openings for some of the smoke guide channels, which are recessed relative to the front surface and the openings of the smoke guide channels located there. This recessed groove can extend across the entire diameter of the filter.
[0059] The ceramic plugs 4 can be made of an open-pore material. The open-pore nature of the ceramic leads to better hygroscopy. The open-pore ceramic absorbs condensate from the smoke, preventing condensate droplets from entering the mouth. The filtering of the condensate also gives the smoke a better flavor than without filtering or condensate separation.
[0060] To achieve the lowest possible draw resistance, the filter can be filled with activated carbon granules as the filter medium. The smoke is drawn through the granules with relatively low pressure loss. The pollutants to be filtered out are adsorbed by the activated carbon. To prevent very small pieces of activated carbon from being inhaled with the smoke, a surface filter medium can be arranged in the sleeve at the downstream end of the filter facing the mouth, which prevents activated carbon granules from reaching the mouth.
[0061] Fig. 4 then shows a roll 100 according to the invention for producing a stuffed smoking product. The roll 100 has a winding tube 101 with a receiving space 102 for receiving shredded herbal smoking product, such as tobacco, in particular tobacco enriched with cannabis products or other smokable plant parts. Furthermore, the roll has the filter 1 with the ceramic plugs of Figs. 2 and 3 at the end of the winding tube 101.
[0062] This shredded herbal smoking product is stuffed into the receiving chamber. Unlike the conventional production of cigarettes or cigars, in which the smoking product is rolled, the stuffing density of the shredded herbal smoking product can vary and is typically denser than that of rolled products. Stuffing aids, in particular a stuffing plunger, are typically used for this purpose. Due to the axial pressure during stuffing, there is a risk of blocking the smoke guide channels 5 of the filter 1. The use of the known filter 1 of Figs. 1 and 2 has surprisingly shown that the risk of blocking is significantly reduced in stuffed smoking products.
[0063] The winding tube 101 preferably consists of dried and rolled plant leaves, in particular tobacco leaves. Unlike paper tubes, plant leaves can be shaped during or after a drying process and retained in shape with or without the addition of liquid. The addition of artificial agents, such as adhesives such as gum or other paper adhesives, or bleaching agents, paper additives, and the like, is not necessary. Accordingly, combustion residues of these substances are also not contained in the inhaled smoke. The preferred length of the tube 2 can be between 8 and 40 cm.
[0064] The stuffed smoking product, especially when using a winding tube 101 made of plant leaves, can be shaped like a cigar. Here, the user selects a particularly high packing density of the smoking product within the receiving space, which is typically significantly higher than that of cigarettes. As a result, cigars often burn 3-4 times longer than cigarettes of comparable size, which is also desired by the user.
[0065] The ceramic plugs also have the advantageous effect that a smoking item, such as a very expensive cigar, can be burned down to the filter without the filter material being affected by the combustion.
[0066] The winding tube 101 can preferably be hand-rolled. For this purpose, the filter 1 is positioned on the plant leaf or another tube leaf and is then wound around a cylindrical or conical tool. The cylindrical or conical shape can be made of metal. It can optionally be heated to improve the drying of the winding tube, in particular via a heating device integrated into the tool.
[0067] To improve the shape, the wrapping material can have a higher residual moisture content before shaping than the packaged final product. For example, it is possible to spray the wrapping material with water or another liquid medium before shaping.
[0068] Alternatively or in addition to heating during shaping, drying can take place after shaping, e.g. in an oven.
[0069] Finally, after shaping and optional drying, the tool is removed from the receiving space 102 and the finished roll 100 according to the invention can be hygienically packaged.
[0070] Preferably, the wraps according to the invention are not manufactured in a factory, i.e., on a large industrial scale, but are wound or rolled by hand, as is the case with the production of high-quality cigars.
[0071] 1 filter
[0072] 2 sleeves
[0073] 3 Filter medium
[0074] 4 4a, 4b Ceramic plugs
[0075] 5 smoke duct
[0076] 6 Outside
[0077] 7 inside in contact with the filter medium
[0078] 8 outside in contact with smoking material
[0079] 9 conical surface
[0080] 10 circular path
[0081] 11 Shell surface
[0082] 12 Opening
[0083] 13 recess groove
[0084] 14 Opening
[0085] 15 Opening
[0086] 16 Opening
[0087] 17 Frontal surface
[0088] 18 projection segments
[0089] 19 floor area
[0090] 20 Deepening
[0091] A Longitudinal axis
[0092] 51 Cutting plane
[0093] 52 cutting plane
[0094] 100 wraps
[0095] 101 winding core
[0096] 102 Recording Room
Claims
Patent claims 1 . Roll (100) for the production of a stuffed smoking article, wherein the roll (100) has a winding sleeve (101) which delimits a receiving space (102) and a filter (1) arranged at the end in the receiving space (102) with a longitudinal axis (A) for filtering harmful substances from smoke when burning smoking article, in particular tobacco, wherein the filter (1) has a sleeve (2) and two ceramic plugs (4, 4a, 4b) arranged at the end of the sleeve (2) with an inner side (7) directed into the interior of the sleeve (2) and an outer side (6, 8), wherein a filter medium (3) is arranged within the sleeve (2) between the ceramic plugs (4, 4a, 4b), and wherein the ceramic plug (4, 4a, 4b) is interspersed with a plurality of smoke guide channels (5), wherein the ceramic plug (4, 4a, 4b) is provided along its outer side (6, 8) has a flat or curved end face (17) which is interrupted by at least one recess (13, 20), characterized in thatthat an opening (15) of a first smoke channel (5) ends along a first smoke guide channel in some areas on a first sectional plane (S2) perpendicular to the longitudinal axis (A) of the filter (1), an opening (14) of a second smoke channel (5) ends along a second sectional plane (S1) perpendicular to the longitudinal axis (A) of the filter (1), and that an opening (16) of the third smoke guide channel (5) ends along a third sectional plane perpendicular to the longitudinal axis (A) of the filter (1), wherein these three openings (14, 15, 16) are of different sizes and wherein the three sectional planes (S1, S2) are arranged parallel to one another.
2. Roll according to claim 1, characterized in that the opening cross sections of the openings (14, 15) of the first and second smoke guide channels (5) are of different sizes.
3. Roll according to claim 1 or 2, characterized in that the opening cross sections (14, 15, 16) of the first, second and third smoke guide channels (5) are of different sizes.
4. Roll according to one of the preceding claims, characterized in that at least one opening (15) of a first of the smoke guide channels (5) extends at least partially along the end face (17) and wherein an opening (14) of a second of the smoke guide channels (5) extends at least partially along the recess (13, 20).
5. Winding according to one of the preceding claims, characterized in that the recess comprises a recess groove (13).
6. Winding according to claim 5, characterized in that the ceramic plug (4, 4a, 4b) has both at least the recessed groove (13) and a central recess (20), wherein the central recess (20) is formed recessed in the ceramic plug (4, 4a, 4b) relative to a bottom surface (19) of the recessed groove (13), wherein the ceramic plug (4, 4a, 4b) has at least a third smoke guide channel (5) which is arranged in the central recess (20), wherein the third smoke guide channel (5) is arranged on the longitudinal axis (A) of the filter (1).
7. Winding according to one of the preceding claims, characterized in that the openings (14, 15, 16) end in regions on three different sectional planes (S1, S2 and S3) arranged parallel to one another through the longitudinal axis (A).
8. Roll according to one of the preceding claims, characterized in that the length of the first smoke guide channel (5) is greater than the length of the second smoke guide channel (5) and that the length of the second smoke guide channel (5) is less than the length of the third smoke guide channel (5).
9. Winding according to one of the preceding claims, characterized in that six smoke guide channels (5) are provided concentrically around a longitudinal axis (A) of the filter (1) in the ceramic plug (4, 4a, 4b).
10. Wrap according to one of the preceding claims, characterized in that the filter medium (3) is an activated carbon granulate.
11. Wrap according to one of the preceding claims, characterized in that the winding sleeve (101) is formed from dried plant leaves, in particular from tobacco leaves.
12. Winding according to one of the preceding claims, characterized in that the winding sleeve (101) is free of binding and adhesive agents.
13. Winding according to one of the preceding claims, characterized in that the ceramic plug (4, 4a, 4b) is rotationally symmetrical when rotated by less than 180°, preferably when rotated by 120° or less.
14. Winding according to one of the preceding claims, characterized in that the end-side outer circumference of the ceramic plug (4) defines a circular area and that the end face interrupted by the depression(s) occupies less than 50% of this circular area, preferably less than 40% of this circular area.
15. Use of the wrapper (100) according to any one of the preceding claims for producing a stuffed cigar or a stuffed cigarillo.
16. A method for producing a winding according to one of the preceding claims, characterized by the following steps: A Providing the filter (1 ) and one or more dried plant leaves B wrapping the plant leaf or leaves, in particular by hand, around a cylindrical or conical area of a tool, wherein the filter (1) is rolled up at the end during wrapping and preferably drying the plant leaf or leaves in the wrapped state; C Removing the tool.
17. The method according to claim 16, characterized in that the tool is inserted into the sleeve of the filter (1) in regions prior to wrapping, so that the filter (1) has an edge-side projection relative to the ceramic plug (49) on one side.