CN115334912A - Paper for forming cavity between tobacco rod and filter segment - Google Patents

Abstract

A heat-not-burn smoking construction (1), wherein the smoking construction (1) extends in a lengthwise direction (2) and includes a longitudinal axis (3), comprising at least one tobacco segment (10) of tobacco, at least one cooling tube ( 20) and a filter (4) along the longitudinal axis, the filter at least comprising an upstream hollow filter segment (30) and a downstream filled filter segment (40) adjacent to the hollow filter segment (30), wherein the filter The segments (30, 40) are wrapped with at least one first composite wrap (50), wherein the cooling tube (20) and the filter (4) are surrounded by a second composite wrap (60), which is partially Extends over the tobacco segment (10) to attach the filter (30, 40) and the cooling tube (20) to the tobacco segment (10), wherein the cooling tube (20) is formed in the Between the filter (4) and the tobacco segment (10), the first composite wrap surrounds the filter (4) and forms a cavity (20a) between the tobacco segment (10) and the filter (4), the cavity The body extends along a length beyond the upstream hollow filter segment (30).

Description

Paper forming cavity between tobacco rod and filter segment

The present invention relates to a heat-not-burn smoking construction (such as a cigarette) having at least one tobacco section, at least one cooling tube and a filter comprising at least an upstream hollow filter section and a hollow filter section adjacent to the hollow Downstream of the filter section is filled filter section. The filter segment is wrapped with at least one first composite wrap. The cooling tube and filter are preferably surrounded by a second composite wrap. A cooling tube is formed between the filter and the tobacco segment by a first combination wrap that surrounds the filter and forms a cavity between the tobacco segment and the filter. The invention also relates to a method for making one or two heat-not-burn smoking configurations.

Smoking articles, such as cigarettes, are ubiquitous consumer goods. Typically, a cigarette is composed of at least two parts, a filter part and a tobacco part. Tobacco is usually formed as a rod surrounded by a paper material to keep the tobacco shaped. Typically, the tobacco rod and filter are attached to each other and held together by tipping paper.

In general, a similar configuration can also be used for electronic cigarettes (e-cigarettes). They have created the need for and the possibility of novel tobacco products in which tobacco is heated but not combusted. These heat-not-burn configurations are used in conjunction with electronics that provide a heater. Smoke to be produced by the heater in combination with the constructed tobacco portion is directed through the filter and to the consumer's mouth.

However, heat-not-burn construction is required to be more complex than conventional combustible cigarettes because the hot smoke must be cooled. Accordingly, many heat-not-burn articles consist of a special filter element, a tubular element (such as a paper tube), a tobacco portion, and a wrapper for combining these portions. Furthermore, tobacco needs to be specially prepared for use with electric heaters.

The complexity of heat-not-burn articles leads to high production costs, since different components have to be produced in different steps and combined in further steps. Furthermore, due to special and/or additional elements (such as tubular elements or special filters), the production costs of heat-not-burn articles are much higher relative to conventional combustible smoking articles.

It is therefore an object of the present invention to reduce the production costs of heat-not-burn articles by providing heat-not-burn articles with reduced complexity.

The above problems/disadvantages are solved/eliminated by a heat-not-burn smoking construction, wherein the smoking construction extends lengthwise and includes a longitudinal axis, includes at least one tobacco segment of tobacco, at least one cooling tube, and includes at least two adjacent filter The filter of the device segment is along the longitudinal axis. The filter segment is wrapped with at least one first composite wrap. The cooling tube and filter are surrounded by a second combination wrap or tipping paper that extends partially over the tobacco segment to attach the filter and cooling tube to the tobacco segment.

The filter segment is preferably an upstream hollow filter segment and a downstream packed filter segment adjacent to the hollow filter segment.

The above-mentioned problems are also eliminated by a heat-not-burn smoking construction, wherein the smoking construction extends lengthwise and includes a longitudinal axis comprising at least one tobacco segment of tobacco, at least one cooling tube and a filter along which the filter At least one filter segment is included, preferably two adjacent filter segments. One or more filter segments are wrapped with at least one first composite wrap. The cooling tube and filter are surrounded by a second combination wrap or tipping paper that extends partially over the tobacco segment to attach the filter and cooling tube to the tobacco segment.

The filter segment is preferably an upstream hollow filter segment and a downstream packed filter segment adjacent to the hollow filter segment. When the filter is a single filter segment, the filter segment is preferably a filled filter segment.

Since the tobacco segment is attached to the wrapped filter by the second combined paper, the tobacco segment is not wrapped by the first combined wrap. The first composite paper is preferably adjacent to the tobacco segment.

The cooling tube is formed between the filter and the segment of tobacco by a first combination wrapping surrounding the filter and forming a cavity between the segment of tobacco and the filter that extends a length beyond the filter , especially beyond the upstream hollow filter section.

Preferably, the first combination wrap and the filter and/or at least two filter segments form a recessed double filter comprising a filter at least one of the filter segments and/or filter segments at least one recess. Ideally, the upstream hollow filter segment comprises a tubular portion forming an extension of the cooling tube. This configuration with cooling tubes ensures that the hot smoke cools down before reaching the consumer's mouth. Furthermore, the material required to produce the individual paper tubes can be saved, resulting in lower overall production costs.

In a preferred embodiment, the first combination wrapper and/or the second combination wrapper comprise paper, carton and/or cardboard material such that the tube is protected from mechanical stress. In preferred embodiments the paper, carton or board material has a weight above 60 gsm, preferably above 75 gsm, preferably above 90 gsm, and/or below 200 gsm, preferably below 150 gsm, preferably below 125 gsm.

Preferably, the first combination wrap is thicker and/or has a higher basis weight than the second combination wrap. The second combination wrap is also longer than the first combination wrap.

In a preferred embodiment, the first combination wrapper and/or the second combination wrapper are marked and/or printed to provide important information, such as important information about the use or origin of the heat-not-burn smoking configuration.

It is further conceivable that the cooling tube comprises a paper material. Preferably, the tube comprises only one or a few layers (eg two, three or more) of paper material. The paper material may comprise paper or cardboard material to provide higher stiffness and/or mechanical protection of the tube.

According to a preferred embodiment, the cooling tube extends along the longitudinal axis with a length greater than 15 mm, preferably greater than 20 mm, preferably greater than 25 mm, preferably greater than 32 mm and/or less than 45 mm, preferably less than 40 mm, preferably less than 37 mm. Ideally, the cooling tube extends along a length between 10 mm and 25 mm, and in particular over a length of 20 mm. Preferably, the cooling tube extends along a length greater than 10 mm. In this way, the cooling distance through the cooling pipe is sufficient to cool down the hot smoke.

In a preferred embodiment, the length of the cooling tube is shorter than the length of the first composite wrap (or respectively, the first paper wrap). The length of the cooling tube may be equal to the distance between the filter, and especially the upstream hollow filter segment, and the tobacco segment. The cooling tubes are then protected from mechanical stress by the material of the composite wrap.

In a preferred embodiment, the cooling tube forms an empty cavity. In another embodiment, the cooling tube, preferably the cavity, is filled with a filling material, such as fibers or inserts. Fibers may be made from natural materials (eg cellulose fibers, plant fibers, etc.). It is also possible that the cavity is filled with a heat absorbing material. The cavity and/or filled cavity advantageously cools the heat flow to a level that is comfortable for the consumer. The filled cavity also stabilizes the cooling tube.

In a further preferred embodiment, the length of the cavity is greater than or equal to the length of the filter. Preferably, the length of the cavity is equal to the length of the cooling pipe. Ideally, the filter extends along a length greater than 8mm, preferably greater than 10mm, preferably greater than 12mm and/or less than 22mm, preferably less than 20mm, preferably less than 17mm. Preferably, the upstream hollow filter segment and/or the downstream filled filter segment extend along a length of greater than 3 mm, preferably greater than 5 mm, preferably greater than 7 mm and/or less than 12 mm, preferably less than 10 mm, preferably less than 8 mm.

Ideally, the upstream hollow filter segment and/or the downstream filled filter segment extend along a length of between 6mm and 9mm. The length of the combined cooling tube and tubular section is then of sufficient length to cool the heat flow on its way through the heat-not-burn smoking configuration.

In another preferred embodiment, the length of the cooling tube is greater than or equal to the length of the tobacco segment. Ideally, the length of the cooling tube is greater than or equal to the length of the tobacco section to provide sufficient space for the hot smoke within the cooling tube. Preferably, the tobacco segment extends along a length greater than 10mm, preferably greater than 15mm, preferably greater than 20mm and/or less than 40mm, preferably less than 30mm, preferably less than 25mm. In an example, the length of the filter is equal to the length of the cooling tube and equal to the length of the tobacco segment. For example, the same length of the three parts is about 20 mm.

In another embodiment, the length of the cavity and/or cooling pipe is greater than the length of one filter segment and/or filter. The length of the combined cooling tube and tubular section is then of sufficient length to cool the heat flow on its way through the heat-not-burn smoking configuration.

According to a preferred embodiment, the length of the second composite wrap is greater than the sum of the length of the filter and the length of the cooling pipe. Ideally, the length of the second composite wrap is equal to or less than the sum of the lengths of the tobacco segment, filter and cooling tube. The length of the second combination wrap may be greater than the length of the first combination wrap. Preferably, the length of the second composite wrap is greater than 30mm, preferably greater than 35mm, preferably greater than 40mm and/or less than 60mm, preferably less than 55mm, preferably less than 50mm.

It is further conceivable that the length of the first composite wrap is equal to the sum of the length of the filter and the length of the cooling tube and/or cavity. Preferably, the length of the first composite wrap is greater than 25mm, preferably greater than 30mm, preferably greater than 35mm and/or less than 50mm, preferably less than 45mm, preferably less than 40mm. This arrangement ensures sufficient rigidity of the combined first and second wraps protecting the heat-not-burn smoking configuration.

According to the invention, the second combination wrapping overlaps the first combination wrapping. In a preferred embodiment, the second combination wrap overlaps the first combination wrap along at least a portion of the length of the first combination wrap. Ideally, the second combination wrap completely overlaps the first combination wrap. This arrangement ensures sufficient rigidity of the combined first and second wraps protecting the heat-not-burn smoking configuration.

In a preferred embodiment at least one ventilation hole, and preferably several ventilation holes, are provided in the cooling duct. Ideally, the ventilation holes are arranged in a line one behind the other, and in particular the line is arranged circumferentially around the cooling pipe. It is possible that the cooling duct or rather the smoking configuration comprises one or more (for example two or three) lines of ventilation holes, wherein these lines can be arranged close to each other. One or more lines of ventilation holes can be arranged longitudinally on the cooling tube or rather the smoking arrangement. Ideally, the ventilation holes pass through the first combination wrap and/or the second combination wrap. Preferably, the vent holes form a fluid connection from the exterior of the smoking configuration to the interior compartment of the cooling tube. Vents provide air or gas supply to support cooling of the heat flow. In a preferred embodiment, the ventilation holes may be created by laser cutting through the material of the first and second combination wraps.

In a preferred embodiment, the packed filter segment comprises acetate or paper tow. Packed filter segments are typically bundles of fibers or filaments that gather and form a rod. Preferably, the hollow filter segment also comprises acetate. Acetate salts may include cellulose acetate, and particularly cellulose acetate fibers. Ideally, the acetate of the hollow filter segment has a higher density than the acetate of the filled filter segment to ensure that the heat flow from the tobacco segment is directed primarily through the tubular portion of the hollow filter segment to the filled filter segment. It is possible that the acetate of the hollow filter segment has a lower density than the acetate of the filled filter segment or has an equal density to the acetate of the filled filter segment. Acetate, and in particular cellulose acetate fibers, of at least one of the filter segments provides a good smoke filtering capacity. In a possible alternative, the filter segment comprises paper tows.

In preferred embodiments, the tobacco segment comprises reconstituted tobacco. Tobacco segments may also include tobacco sheet rods, whole tobacco leaves and/or shredded tobacco. The tobacco sheet rods and/or shredded tobacco particles may be oriented or randomly oriented. Preferably, the tobacco sheet rods, whole tobacco leaves and/or shredded tobacco are surrounded by sheets comprising reconstituted tobacco. The sheet may be larger than the diameter of the tobacco segment. Ideally, the tobacco segments are made entirely of reconstituted tobacco. The use of reconstituted tobacco provides good adjustment of the physical characteristics of the tobacco segments and reduces production costs.

In a preferred embodiment, the tobacco comprises tobacco sheet rods and/or folded sheets comprising tobacco powder and/or preferably more than 5% by weight of an aerosol generating agent. The tobacco preferably comprises more than 5% by weight glycerol, preferably more than 8% by weight glycerol, preferably more than 10% by weight glycerol. Such amounts of glycerin help keep the tobacco moist and formable.

Suitable aerosol generating agents include: polyalcohols such as sorbitol, glycerol and glycols such as propylene glycol or triethylene glycol; non-polyalcohols such as monoalcohols, acids such as lactic acid, glycerol derivatives such as triethylene glycol Acetate essence, triethylene glycol diacetate, ester of triethyl citrate. In some embodiments, the aerosol generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol.

In a preferred embodiment the cooling tube comprises tubular reinforcement material. Preferably, the tubular reinforcing material comprises a material which is particularly stable to moisture, aerosols and/or steam. It is conceivable that the tubular reinforcement comprises cardboard. In an example, tubular reinforcement material is preferably provided for attachment to a tubular portion of a filter, preferably a hollow filter segment. It is also conceivable to provide tubular reinforcement material as an additional wrapping. In this case, the reinforcing material may be wrapped into a tubular shape and the tubular shape attached to the filter, preferably a hollow filter segment, with the first combination wrap.

This object is also achieved by a method for manufacturing a heat-not-burn smoking construction, the method having the following steps:

- providing a tobacco segment and at least one filter formed by at least two filter segments,

- wrapping the first filter with a first combination wrapping to obtain a first wrapping filter, wherein the cooling tube is formed as a cavity surrounded by the first combination wrapping, wherein the length of the tube is longer than that of the first filter long in length to create a cooling cavity on at least one side of the wrapped filter,

- Wrapping at least part of the first wrapped filter and tobacco segment with a second combined wrap such that the cavity is located between the filter and the tobacco segment.

In a first step, the tobacco segment comprises at least a first filter, which preferably consists of at least two filter segments, and in particular two different filter segments, and in particular an upstream hollow filter segment and At least one of the downstream packed filter segments is formed. Ideally, the filled filter segment will be arranged adjacent to the hollow filter segment so that smoke can be directed through the hollow filter segment and then through the filled filter segment.

The next step provides wrapping the upstream hollow filter segment and the downstream packed filter segment with a first composite wrap to produce a first wrapped filter and cooling tube. Ideally, the hollow filter segment will be positioned between the cooling tube and the filled filter segment. The length of the cooling tube is preferably longer than the length of the first filter to create a cooling cavity in the form of a cooling tube on at least one side of the wrapped filter. Preferably, the filter segment will be wrapped with a first wrap and the cooling cavity, especially in the form of a cooling tube, is formed by the first wrap. Ideally, the cooling tube and first wrapped filter will be surrounded by a second combination wrap or tipping paper to provide good protection from mechanical stress.

The next step provides wrapping at least a part of the first (wrapped) filter and the tobacco segment with a second combined wrapping so that the cavity, and in particular the cooling tube, is located between the filter and the tobacco segment, and possibly more specifically, Located between the hollow filter section and the tobacco section. The tobacco segment may be completely wrapped with the second composite wrap. The second combination wrap provides good attachment of the filter of the first wrap to the cooling tube and tobacco segment.

In a preferred embodiment, the method comprises the additional step of wrapping the first filter and the second filter with a first combination wrap to obtain a double length wrapped filter. A double length tube is formed between the first filter and the second filter. Furthermore, the length of the double length tube is equal to or longer than the sum of the lengths of the first filter and the second filter to create a cooling cavity between the first filter and the second filter. Producing double-length wrapped filters reduces production steps and thus also production costs.

In a further preferred embodiment, the method comprises the additional step of cutting the double length wrapped filter to create a first wrapped filter and a second wrapped filter comprising the first cooling tube and the second cooling tube. Using a first wrapped filter and a second wrapped filter, two smoking configurations can be produced.

In a further preferred embodiment, the method comprises the additional step of wrapping the double length filled filter segment and the two hollow filter segments with a double length first combination wrap to obtain a double length wrapped filter. Ideally, the length of the double length first combination wrap extends the sum of the lengths of the double length filled filter segment and the two hollow filter segments to obtain two cavities forming cooling ducts which cool The tube is formed in particular from the double length first composite wrap. At least one of the two hollow filter segments can be arranged at the end of the double-length packing filter segment, and in particular adjacent to this end. At least one of the two cooling tubes is arranged on one of the hollow filter segments and in particular adjacent to the hollow filter segment. At least one of the hollow filter segments may be positioned between the cooling tube and the double length first filter.

In a further preferred embodiment, the method comprises the additional step of cutting the double length wrapped filter to create a first wrapped filter and a second wrapped filter. Preferably, the double length wrapped filter is cut in the middle of the double length stuffed filter segment to create a first wrapped filter and a second wrapped filter. The length of the first wrapped filter may be equal to the length of the second wrapped filter. Using a first wrapped filter and a second wrapped filter, two smoking configurations can be produced.

In a preferred embodiment, the first combination wrap and/or the second combination wrap is formed to have the properties described above.

This object is also achieved by a method for manufacturing two heat-not-burn smoking configurations, the method having the following steps:

- providing a tobacco segment and at least a first wrapped filter and a second wrapped filter according to the above description,

- placing the tobacco segment between the filter of the first wrap and the filter of the second wrap, wherein the cooling tube of each filter is positioned between the segment of tobacco and the filter segment of each wrap of filter,

- wrapping each of the first-wrapped filter and the second-wrapped filter and at least two separate parts of the tobacco segment with two separate second combination wraps, or wrapping the tobacco with one common combination wrapper segment and a first-wrapped filter and a second-wrapped filter to create a double-length smoking configuration, wherein a cavity of each wrapped filter is created between each filter and the tobacco segment,

- Cut a double length smoking construction in the middle of the tobacco segment to create two smoking constructions.

The tobacco segments are preferably sized for two heat-not-burn smoking configurations. The cutting of the double length smoking configuration is done in the middle of the tobacco section.

Ideally, for wrapping the first wrapped filter and/or the second wrapped filter, a first combination wrap as described above is used. The method of producing two smoking configurations makes it possible to produce two smoking configurations in one production line or rather in one production process, so that the production costs will be reduced compared to producing two separate smoking configurations separately.

Other advantages, objects and features of the present invention will be described in the following description, by way of example only, with reference to the accompanying drawings. In the figures, similar parts in different embodiments may be presented with the same reference numerals.

The figure shows:

Figure 1 is a schematic view of the smoking structure and its components;

Figure 2 is an illustration of a method for making a heat-not-burn smoking construction;

Figure 3 is a cross-sectional view of a double length filter with double length cooling tubes;

Figure 4 is a cross-sectional view of a double length filter with a double length filled filter section;

Figure 5a is a cross-sectional view of a double length smoking configuration with a double length filled filter segment;

Figure 5b is a cross-sectional view of a double length smoking configuration with double length tobacco segments.

In FIG. 1 , a smoking configuration 1 is shown having a tobacco section 10 , a cooling tube 20 , an upstream hollow filter section 30 , a downstream filling filter section 40 , a first combination wrapper 50 and a second combination wrapper 60 . Along the longitudinal axis 3, a tobacco segment 10, a cooling tube 20, a hollow filter segment 30 and a filling filter segment are arranged. Ideally, these components are arranged adjacent to each other, in particular in the stated order and in particular one after the other.

Preferably, the first composite wrap 50 is arranged such that it surrounds the hollow filter segment 30 and the filled filter segment 40 such that a wrapped filter is formed. The wrapped first combination wrap 50 forms the cavity 20a such that a cooling duct is formed, wherein the cooling duct is defined by the cavity 20a and the surrounding first combination wrap 50 . The hollow filter segment 30 comprises a tubular portion 31 , wherein the tubular portion is ideally arranged such that it is arranged adjacent to the cooling pipe 20 and in particular such that the tubular portion 31 defines an extension of the cooling pipe 20 .

The second combination wrap 60 may be arranged such that it at least partially, preferably completely, overlaps the first combination wrap 50 . Furthermore, the second combination wrap 60 is preferably arranged such that it surrounds at least a portion of the wrapped filter and segment of tobacco 10 to which the second combination wrap 60 preferably attaches the segment of tobacco 10 and the wrapped filter. A cooling tube 20 in the form of a cavity 20 a may be arranged between the tobacco segment 10 and the hollow filter segment 30 or filling segment 40 . The filling filter segment 40 is preferably arranged adjacent to the hollow filter segment 30 and in particular at the proximal end of the smoking configuration 1 , wherein the hollow filter segment 30 is ideally arranged between the cooling tube 20 and the filling filter segment 40 between.

All components, and in particular the tobacco segment 10 , the cooling tube 20 , the hollow filter segment 30 and the filling filter segment 40 are arranged concentrically around the longitudinal axis 3 . Ideally, the first composite wrap 50 circumferentially encloses the cooling tube 20, the hollow filter segment 30, and the filled filter segment 40 to form a wrapped filter. The second combination wrap 60 may circumferentially enclose at least a portion of the wrapped filter and tobacco segment 10 .

The first composite wrapper 50 and/or the second composite wrapper 60 comprises paper, carton, cardboard material and/or aluminum foil, cellulose acetate film, preferably having a weight higher than 60 gsm, preferably higher than 75 gsm, preferably higher than 90 gsm and/or Or the weight is preferably below 200 gsm, preferably below 150 gsm, preferably below 125 gsm.

Filled filter segment 30 and/or hollow filter segment 40 may comprise acetate, and preferably cellulose acetate fibers. Ideally, the acetate filling filter segment 40 has a lower density than the acetate of hollow filter segment 30 .

The cavity 20a may be filled with a filling material such as fibres, preferably made of natural materials such as cellulose fibres, plant fibres, and the like. It is also possible that the cavity 20a is filled with a heat absorbing material.

Tobacco segment 10 may comprise reconstituted tobacco, preferably randomly oriented strips of tobacco sheet material, whole tobacco leaves, and/or shredded tobacco. Ideally, the tobacco segment comprises tobacco powder and/or at least one, preferably a plurality of sheets comprising reconstituted tobacco and/or more than 5% by weight of glycerin, preferably more than 8% by weight of glycerol, preferably more than 10% by weight of glycerin.

Preferably, tobacco segment 100, cooling tube 70 (in particular in the form of cavity 20a), hollow filter segment 91, filled filter segment 40, filter 90 comprising one or two filter segments, filter and The length of the wrapped filter 110, first combination wrap 80, second combination wrap 120 and smoking construction 130 of the cooling tube 20 extends in a lengthwise direction. The length of filter 90 may define the combined length of the length of hollow filter segment 91 and the length of filled filter segment 40 . Further, the length of the wrapped filter 110 and/or the length of the first composite wrap 80 defines the combined length of the length of the hollow filter segment 91 , the length of the filled filter segment 40 and the length of the cooling tube 70 . The length of the cooling pipe may be greater than the length of the cavity 20a located in the cooling pipe.

The length of the tobacco segment 100 may be greater than, less than or equal to the length of the cooling tube 70 . Ideally, the length of the tobacco segment 100 is equal to the length of the cooling tube 70 . The length of the tobacco segment 100 may be greater than, less than or equal to the length of the filter 90 . Preferably, the length of the tobacco segment 100 is less than the length of the filter 90 . The length of the tobacco segment 100 may be greater than, less than or equal to the length of the hollow member 91 or filled filter segment 92 . Desirably, the length of the tobacco segment 100 is greater than the length of the hollow member 91 or filled filter segment 92 . The length of the tobacco segment 100 may be greater than, less than, or equal to the length of the wrapped filter 110 and/or the first combination wrap 80 . Desirably, the length of the tobacco segment 100 is less than the length of the wrapped filter 110 and/or the first combination wrap 80 .

The length of the cooling tube 70 and/or the cavity 20a may be greater than, less than or equal to the length of the filter 90 . Ideally, the length of cooling tube 70 and/or cavity 20 a is greater than the length of filter 90 . The length of cooling tube 70 and/or cavity 20 a may be greater than, less than or equal to the length of hollow member 91 and/or filled filter segment 92 . Ideally, the length of cooling tube 70 and/or cavity 20 a is less than the length of hollow member 91 and/or filled filter segment 92 . The length of the cooling tube 70 and/or the cavity 20 a may also be shorter than the length of the first combination wrapping 80 and/or the second combination wrapping 80 , and especially less than the length of the second combination wrapping 120 .

The length of the hollow filter segment 91 may be greater than, less than or equal to the length of the filled filter segment 92 . Ideally, the length of the hollow filter segment 91 is less than the length of the filled filter segment 92 . Further, the length of the smoking structure 130 may be greater than or equal to the length of the second combination wrapping 120 , wherein the length of the first combination wrapping 80 may be less than or equal to the length of the second combination wrapping 120 .

The length of the tobacco segment is preferably greater than 10 mm, preferably greater than 15 mm, preferably greater than 20 mm and/or less than 40 mm, preferably less than 30 mm, preferably less than 25 mm. The length of the cooling pipe 70 may be greater than 15 mm, preferably greater than 25 mm, preferably greater than 32 mm and/or less than 45 mm, preferably less than 40 mm, preferably less than 37 mm. Ideally, the length of the cooling tube 70 is between 10 mm and 25 mm, and especially greater than 20 mm, preferably greater than 10 mm. Ideally, the filter 90 has a length greater than 8mm, preferably greater than 10mm, preferably greater than 12mm and/or less than 22mm, preferably less than 20mm, preferably less than 17mm.

Furthermore, the length of hollow filter segment 91 and/or filled filter segment 92 is greater than 3 mm, preferably greater than 5 mm, preferably greater than 7 mm and/or less than 12 mm, preferably less than 10 mm, preferably less than 8 mm. Desirably, the length of the first composite wrap 80 and/or wrapped filter 110 is greater than 25mm, preferably greater than 30mm, preferably greater than 35mm and/or less than 50mm, preferably less than 45mm, preferably less than 40mm. Preferably, the length of the second combination wrap 120 and/or the smoking formation is greater than 30mm, preferably greater than 35mm, preferably greater than 40mm and/or less than 60mm, preferably less than 55mm, preferably less than 50mm. Ideally, the length of the smoking formation is greater than 35mm, preferably greater than 45mm, preferably greater than 50mm and/or less than 70mm, preferably less than 65mm, preferably less than 60mm.

The smoking configuration preferably comprises ventilation holes 5 arranged at the cooling duct 70 . Ideally, the ventilation holes 5 are arranged in a line one behind the other, and in particular the line is arranged circumferentially around the cooling pipe 70 . The line of ventilation holes 5 can also be arranged perpendicular to the length direction 2 . The smoking configuration may also comprise one or more (eg two or three) lines of ventilation holes 5 which may be arranged close to each other. Ideally, the ventilation holes 5 pass through the first and/or second combination wrapping in a radial direction, and in particular in a direction perpendicular to the length direction 2 .

FIG. 2 shows a diagram illustrating a method 200 for manufacturing a heat-not-burn smoking construction 1 . In a first step 201 at least one, preferably two tobacco segments 10 are provided, wherein the tobacco segments 10 may be formed as described above. In a further step 202 at least one first filter is formed, wherein the first filter ideally comprises at least two and preferably exactly two filter segments. Preferably, the first filter comprises a hollow filter section 30 and a filled filter section 40 .

In the next step 203 , the first filter is wrapped with the first composite wrap to obtain a first wrapped filter, wherein the cooling pipe may be formed as a cavity 20 a surrounded by the first composite wrap 50 . Ideally, the length of cooling tube 70 is longer than the length of first filter 90 to create cavity 20a on at least one side of the first wrapped filter. The first combination wrap 50, the cooling tube 20, the hollow filter segment 30, and/or the filled filter segment may be arranged as described above and/or formed as described above. The first combined package desirably has a specific weight of 60 gsm, preferably higher than 75 gsm, preferably higher than 90 gsm and/or preferably lower than 200 gsm, preferably lower than 150 gsm, preferably lower than 125 gsm.

Step 203 may include an intermediate step 203a of wrapping the first filter and the second filter with a double-length cooling tube to obtain a double-length wrapped filter. A double length tube may be positioned between the first filter and the second filter, with ideally a double length cooling tube positioned between the two hollow filter segments 30 . Further, the length of the double-length tube is preferably longer than the sum of the lengths of the first filter and the second filter. An optional further intermediate 203b step provides cutting of the double length wrapped filter to create a first wrapped filter and a second wrapped filter. In this case, a second tobacco segment may be provided in step 201b.

In an alternative step 302, a double length filled filter segment and at least two hollow filter segments 30 are provided, and in a further alternative step 303 the double length filled filter is wrapped with a double length first combination wrap. segment and at least two hollow filter segments are wrapped together to obtain a double length wrapped filter. Ideally, at least one of the hollow filter segments is arranged adjacent to the end of the double length filled filter segment, in particular so that the double length filled filter segment is positioned between the hollow filter segments 30 . The length of the double length first combination wrap may be longer than the combined length of the double length filled filter segment and the two hollow filter segments such that the double length first combination wrap extends beyond the hollow filter segment 30 to form two cavity. These cavities may be surrounded by a double length first combination wrap and/or form cooling tubes 20 . At least one of the two cooling tubes is arranged at one of the hollow filter segments 30 and in particular adjacent to it. At least one of the hollow filter segments may be positioned between the cooling tube and the double length first filter.

In a further alternative step 303b, the double length wrapped filter is cut to create a first wrapped filter and a second wrapped filter. Preferably, the double length wrapped filter is cut in the middle of the double length stuffed filter segment to create a first wrapped filter and a second wrapped filter.

In a further step 204, the first wrapped filter and/or the second wrapped filter are each wrapped with at least a portion of the tobacco segment 10 with a second combined wrap 60 such that the cavity 20a or more precisely It is said that the cooling tube 20 is positioned between the filter and the tobacco segment. The first combination wrap 50, the cooling tube 20, the hollow filter segment 30, and/or the filled filter segment 40 may be arranged and/or formed as described above.

FIG. 3 shows a cross-sectional view of a double-length filter 4 with a double-length cooling tube 20 . The illustrated double length filter 4 configuration comprises at least one double length cooling tube 20 or two cooling tubes 20 attached to each other, two hollow filter segments 30 and two packed filter segments 40 . The double length filter 4 configuration is preferably wrapped in at least one double length first combination wrap 50 . It is also conceivable to use two or more wrappers in a double length filter 4 configuration. Each of the hollow filter segments 30 preferably comprises a tubular portion 31 . The first filter 4 configuration is connected at the middle M to the second filter 4 configuration. It is conceivable that the double length filter 4 configuration shown includes a double length cooling tube 20 which can be split at the middle M into two separate cooling tubes 20 . The first split cooling tube 20 is preferably part of a double length cooling tube 20 and is connected to the first filter 4 configuration. The second split cooling tube 20 is preferably another part of the double length cooling tube 20 connected to the second filter 4 configuration. Preferably, the two sections of the double length cooling tube 20 are identical to each other. Preferably, two separate filter 4 configurations identical to each other can be divided by cutting the double-length filter 4 configuration at the middle M, especially at the middle M of the double-length cooling pipe 20 .

FIG. 4 shows a cross-sectional view of a double length filter 4 with a double length filled filter section 40 . This example of double length filter 4 construction is substantially similar to the example shown in FIG. 3 . Preferably, the shown double length filter 4 configuration comprises at least a double length filled filter segment 40 or two filled filter segments 40 attached to each other, two hollow filter segments 30 comprising a tubular portion 31 and two A cooling tube 20. The double length filter 4 configuration further comprises at least a double length first composite wrap 50 . Similar to the double length filter 4 configuration shown in Fig. 3, this filter 4 configuration may also comprise more than one wrapper, preferably two wrappers. This is particularly advantageous for the stability of the entire double-length filter 4 construction.

Preferably, the double length filter 4 configuration can be divided by cutting at the middle M. Preferably, the middle M of the double length filter 4 configuration corresponds to the middle M of the double length filled filter segment 40 . Also preferably, the double length stuffed filter segment 40 is divisible into two parts. Preferably, the first filled filter section 40 , which is part of a double length filled filter section 40 , is connected to the first hollow filter section 40 and the first cooling pipe 20 . Preferably, a second filled filter section 40 , which is part of a double length filled filter section 40 , is connected to the second hollow filter section 40 and the second cooling pipe 20 . Preferably, the two parts of the double length filled filter segment 40 are identical to each other.

The double length filter 4 configuration shown in Figures 3 and 4 is preferably attachable to several smoking configurations 1, preferably a heat-not-burn smoking configuration.

FIG. 5 a shows a cross-sectional view of a double length smoking configuration 1 with a double length filled filter segment 40 . Preferably, the double length smoking configuration 1 comprises at least two filters 4 and two tobacco segments 10 . Each of the two filters 4 preferably comprises at least a cooling pipe 20 , a hollow filter section 30 and a filled filter section 40 . Preferably, the hollow filter segment 30 comprises a tubular portion 31 . The entire double length smoking construction 1 is preferably wrapped in at least the double length first combination wrap 50 and the double length second combination wrap 60 . Since the tobacco segments have their own wrappers before they are placed against the double length filter configuration, the second combined wrapper 60 may extend partially over the tobacco segments 10 (without extending to the free ends of the tobacco segments) . It is also conceivable to provide the configuration 1 with more than two wraps.

Preferably, the double-length stuffed filter segment 40 or the entire filter 4 corresponds to the example shown in FIG. 4 . Preferably, the double length filled filter segment 40 may be split at the middle M of the double length smoking configuration 1 or at the middle M of the double length filled filter segment 40 . In particular, the middle M of the double length smoking configuration 1 corresponds to the middle M of the double length filled filter segment 40 .

FIG. 5b shows a cross-sectional view of a double length smoking configuration 1 with a double length tobacco segment 10 . Preferably, the double length smoking configuration 1 comprises at least two filters 4 and a double length tobacco segment 10 . The filter 4 preferably comprises at least a cooling pipe 20 , a hollow filter section 30 and a filled filter section 40 . Preferably, the hollow filter segment 30 comprises a tubular portion 31 . The entire double length smoking construction 1 is preferably wrapped in at least two first combination wraps 50 and a double length second combination wrap 60 . Preferably, the double length tobacco segment 10 may be split at the middle M of the double length smoking configuration 1 or at the middle M of the double length tobacco segment 10 . In particular, the middle M of the double length smoking configuration 1 corresponds to the middle M of the double length tobacco segment 10 . In the alternative, the second combination wrap 60 may be formed from two separate second combination wraps that individually combine the filter 4 to the double length tobacco segment 10 . In this case, the two second combination wrappers 60 do not overlap or extend to the middle M of the double-length tobacco segment 10 .

Preferably, the double length tobacco segment 10 is divided into two parts by cutting. The first portion of the double length tobacco segment 10 is preferably attached to the first filter 4 . The second portion of the double length tobacco segment 10 is preferably attached to the second filter 4 .

In view of the prior art, the applicant reserves all the features disclosed in the claimed application documents as essential features of the invention, insofar as they are new, alone or in combination. Furthermore, it is to be noted that in the drawings there are described features which may individually be advantageous. Those skilled in the art will immediately recognize that certain features disclosed in a figure may be beneficial without employing other features in that figure. Furthermore, those skilled in the art will recognize that advantages may arise from combinations of the various features disclosed in one or more of the figures.

list of reference signs

1 Smoking configuration

2 length direction

3 longitudinal axis

5 ventilation holes

10 tobacco segments

20 cooling tube

20a Cavities in Cooling Tubes

30 hollow filter section

31 Tubular part of the hollow filter segment

40 Fill filter segment

50 first set of wraps

60 second set of wraps

70 Length of cooling pipe

80 The length of the first set of wraps

90 Length of filter

100 length of tobacco segment

110 wrapped filter length

120 Length of the second combined wrap

130 Length of smoking construction

200 methods of producing smoking structures

201 Tobacco segment provided

201b Provides second tobacco segment

202 Provide filter

203 Wrap at least one filter and create cooling tubes

203a Create a double-length wrapped filter

203b cut double length filter

204 Wrapped Filter and Tobacco Sections

302 provides a double length padding filter segment

303 wrapped double length filled filter section and two hollow filter sections

303b cut double length wrapped filter

Middle of M Double Length Filter/Middle of Double Length Smoking Construction

Claims (21)

1. A heated non-burning smoking construction (1), wherein the smoking construction (1) extends in a length direction (2) and comprises a longitudinal axis (3) along which at least one tobacco segment (10) comprising tobacco, at least one cooling tube (20) and a filter (4) are along, the filter comprising at least an upstream hollow filter segment (30) and a downstream filled filter segment (40) adjacent to the hollow filter segment (30), wherein the filter segments (30, 40) are wrapped with at least one first combined wrap (50), wherein the cooling tube (20) and the filter (4) are surrounded by a second combined wrap (60) extending partly over the tobacco segment (10) to attach the filter (30, 40) and cooling tube (20) to the tobacco segment (10),

it is characterized in that the preparation method is characterized in that,

the cooling tube (20) is formed between the filter (4) and the tobacco segment (10) by the first composite wrap (50) which surrounds the filter (4) and forms a cavity (20 a) between the tobacco segment (10) and the filter (4) which extends along a length beyond the upstream hollow filter segment (30).

2. A smoking construction (1) according to claim 1,

it is characterized in that the preparation method is characterized in that,

the cooling tube (20) comprises a paper material.

3. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the cooling tube (20) extends along the longitudinal axis (3) with a length (70) of more than 15mm, preferably more than 25mm, preferably more than 32mm and/or less than 45mm, preferably less than 40mm, preferably less than 37mm.

4. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the first combination wrapper (50) is thicker and/or has a higher basis weight than the second combination wrapper (60).

5. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the cooling pipe (20) forms an empty cavity (20 a).

6. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the length of the cooling tube (20) is greater than or equal to the length (90) of the filter (30, 40).

7. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the length (70) of the cooling tube (20) is greater than or equal to the length (100) of the tobacco section (10).

8. A smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the cooling pipe (20) is provided with a vent hole (5).

9. A smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the filling filter segment (40) comprises acetate or paper tow.

10. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the tobacco segment (10) comprises reconstituted tobacco.

11. The smoking construction (1) according to claim 10,

it is characterized in that the preparation method is characterized in that,

the tobacco comprises a tobacco sheet rod and/or folded sheet comprising tobacco powder and/or preferably more than 5 wt% glycerol, preferably more than 8 wt% glycerol, preferably more than 10 wt% glycerol.

12. Smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the cooling tube (20) comprises a tubular reinforcement material.

13. A smoking construction (1) according to claim 2,

it is characterized in that the preparation method is characterized in that,

the weight of the paper material is higher than 60gsm, preferably higher than 75gsm, preferably higher than 90gsm and/or the weight of the paper material is lower than 200gsm, preferably lower than 150gsm, preferably lower than 125gsm.

14. A smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the cooling tube (20) is filled with a filler material, preferably with fibers or inserts.

15. A smoking construction (1) according to at least one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the second composite wrap (60) overlaps the first composite wrap (50) along at least a portion of the length of the first composite wrap (50).

16. A smoking construction (1) according to claim 8,

it is characterized in that the preparation method is characterized in that,

the vents are created by laser through the material of the first combination wrap (50) and the second combination wrap (60).

17. A method for manufacturing a heat not burn smoking construction (1), the method having the steps of:

-providing a tobacco segment (10) and at least one first filter (4) formed by at least two filter segments (30, 40),

-wrapping the first filter (4) with at least one first composite wrap (50) to obtain a first wrapped filter, wherein a cooling tube is formed as a cavity surrounded by the first composite wrap, wherein the length (70) of the cooling tube (20) is longer than the length (90) of the first filter (4), thereby creating a cavity (20 a) on at least one side of the wrapped filter (4),

-wrapping a first wrapped filter (4) and at least a portion of the tobacco segment (10) with a second combined wrap (60) such that the cavity (20 a) is located between the filter (4) and the tobacco segment (10).

18. The method of claim 17, wherein the first and second light sources are selected from the group consisting of,

it is characterized in that the preparation method is characterized in that,

an additional step of wrapping the first and second filters with the first combination wrap to obtain a double length wrapped filter, wherein a double length tube (20) is formed between the first and second filters, and wherein the length of the double length tube is equal to or longer than the sum of the lengths of the first and second filters to create a cooling tube (20) between the first and second filters.

19. The method as set forth in claim 17, wherein,

it is characterized in that the preparation method is characterized in that,

an additional step of wrapping a double length filled filter segment and two hollow filter segments (30) with a double length first combination wrap to obtain a double length wrapped filter, wherein the double length first combination wrap forms two cavities forming a cooling tube (20), wherein at least one hollow filter segment (30) is positioned between the cooling tube (20) and the double length first filter.

20. Method according to at least one of the claims 18 to 19,

it is characterized in that the preparation method is characterized in that,

an additional step of cutting the double length wrapped filter to create a first wrapped filter and a second wrapped filter comprising a first cooling tube (20) and a second cooling tube (20).

21. A method for manufacturing two heat not burn smoking constructions (1), having the steps of:

-providing a tobacco segment (10) and at least a first and a second wrapped filter according to claim 1,

-placing the tobacco segment (10) between the first and second wrapped filters (4a, 4b), wherein the cooling tube (20) of each wrapped filter (4a, 4b) is positioned between the tobacco segment (10) and the filter segment (30a, 30b) of each wrapped filter (4a, 4b),

-wrapping each of the first and second wrapped filters (4 a,4 b) and at least two portions of the tobacco segment (10) with two separate second combined wrappers (60), or wrapping the tobacco segment (10) and the first and second wrapped filters with one common combined wrapper to create a double length smoking configuration (1), wherein a cavity (20 a) of each wrapped filter is created between each first and second filter and the tobacco segment (10),

-cutting the double length smoking configuration (1) in the middle (M) of the tobacco segment (10) to create two smoking configurations (1).

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