RU2767511C2 - Plug-in filter element for product heated without burning - Google Patents

Abstract

FIELD: tobacco industry.

SUBSTANCE: group of inventions relates to smoking products. A plug-in filter element for a product heated without burning has a cavity formed at the mouthpiece end and contains a flavor additive including tobacco and filter material, and a fixation means for holding the plug-in filter element in the cavity. The plug-in element includes a thin insertion part made with the possibility of insertion into the specified cavity, and a thicker, non-insertion part.

EFFECT: possibility of adjustment of smoke parameters is provided.

11 cl, 38 dwg

Description

Technical field

The invention relates to plug-in filter elements for products heated without combustion.

State of the art

Cigarettes and other smoking articles contain a certain amount of tobacco that can be burned or heated without burning to produce smoke for the user to inhale. Smoking article filters are used to change the characteristics of smoke before it enters the user's mouth. Filters used for this purpose may be formed by an insert of cellulose acetate fibers or other materials with similar physical properties. It is known that cellulose acetate absorbs, in particular, solid particles that are part of the smoke.

To improve the removal of certain constituents of smoke, various additional components can be added to the filters of smoking articles. An example is smoke absorbers, such as activated carbon, which absorb certain smoke constituents, thereby removing them from the smoke stream passing through the filter.

In addition to removing smoke constituents, filter additives can impart certain characteristics to the smoke passing through the filter. For example, flavoring agents may be added to alter the aroma and taste characteristics of the smoke that has passed through the filter.

Traditionally, smoking articles with filters having the properties described above are sold together in packs, with the smoking articles in each pack having the same flavor, aroma, and absorption characteristics. As a result, the consumer is not able to adapt the available smoking articles to obtain smoke characteristics in accordance with his choice.

Disclosure of invention

The present invention solves the above problem by providing a structure that enables the consumer to adapt the available non-burning heated products (smoking articles) to obtain the smoke parameters according to his choice. For example, the designs provided in the independent claims of the present invention make it possible to supply/purchase separately heated non-flammable products and insert filter elements for them, so that the user can choose from various filter elements, an element with the desired taste/physical characteristics and easily and securely insert it into the filter.

The present invention provides a plug-in filter element for a non-burning heated product having a cavity formed in the mouth end of this non-burning heated product, containing a flavoring agent including tobacco and a filter material, and a fixing means for holding the plug-in filter element in said cavity, wherein the plug-in the filter element includes a thin insertion part, made with the possibility of insertion into the specified cavity, and a thicker, non-introducible part (made without the possibility of insertion into the specified cavity).

The fixation means may include a mechanical fixation means or contain an adhesive.

The plug-in filter element may comprise a screw thread.

The plug-in filter element may be a plug-in spike.

The insert filter element may be formed from a manually compressed material.

The plug-in filter element may have an end cross-sectional shape that provides an increase in the surface area of the plug-in filter element.

The present invention also provides an insert filter element for non-burning heated product containing a flavoring agent in the form of granules.

The insert filter element may also contain a dye.

The flavoring agent may further include at least one of the following: menthol, lemon, orange, lime, coffee, and/or tea.

The insert filter element can be supplied in a form where the fixing means already holds the insert filter element in the cavity of the product to be heated without combustion.

The present invention also proposes a set of parts containing the described plug-in filter element and heated without combustion product having a cavity containing placed in it the means of fixing the filter element.

Some features that may be relevant to the present invention will also be described below.

The plug-in filter element (assembly unit) may be for a filter of a smoking article and have a locking means for holding the plug-in filter element in the filter of a smoking article, including a chemical locking mechanism.

The chemical locking mechanism preferably comprises an adhesive which is in particular applied to the main surface of the insert filter element.

In one embodiment, the outer surface of the insert filter element is coated with an adhesive.

The adhesive may be applied to at least one strip along the major surface of the insert filter element. At the same time, the plug-in filter element contains a protective layer covering at least one strip with the possibility of removal by the user before inserting the plug-in filter element.

The plug-in filter element may contain a destructible capsule located inside the plug-in filter element and containing an adhesive. In this case, the plug-in filter element can be formed from a material that ensures the movement of the adhesive to the outer surface of the plug-in filter element after rupture of the destructible capsule.

In one embodiment, the insert filter element is formed from wax or the like to be melted after insertion into the filter of the smoking article to adhere the insert filter element to the filter of the smoking article.

The filter of a smoking article may have a cavity with means for fixing the filter element located in it, containing an adhesive applied to the main surface of the cavity.

A set of parts may also be provided containing the described plug-in filter element and the smoking article filter, as well as a smoking article including the described smoking article filter. Such a smoking article may have the plug-in filter element as described inserted into the filter cavity of the smoking article.

The smoking article may have an insert filter element inserted into the filter cavity of the smoking article, wherein the outer surface of the insert filter element is coated with a first adhesive and the inside surface of the filter cavity of the smoking article is coated with a second adhesive such that when the insert filter element is inserted into the cavity, the first adhesive enters contact with the second adhesive with a chemical reaction therebetween forming a bond between the filter of the smoking article and the plug-in filter element.

As will be described below, a filter insert for a filter of a smoking article may comprise a smoke modifier placed in a frangible capsule within the filter insert.

The breakable capsule may contain water.

The smoke modifier may be in the form of granules or in the form of filaments.

The smoke modifier may include a carbon absorbent.

The carbon absorber may be a monolithic structure.

The smoke modifier may include a dye.

The smoke modifier may include a flavor/flavour.

The smoke modifier may include water.

Next, a smoking article filter having a cavity for receiving an insert filter element will be described in more detail.

The cavity may be at least partially delimited by a wall formed from the filter material.

The cavity may be at least partially delimited by a wall formed from paper.

The described advantages and features of particular embodiments should contribute to the understanding of the invention and are not exhaustive and (or) exclusive. It should be understood that they should not be construed as limiting the invention as defined by the claims or limiting the equivalents of the claims. Upon reading the following description, drawings and claims, additional features and advantages of the invention will become apparent.

Brief description of the drawings

For a better understanding of the present invention, the following, by way of illustration only, is a description of its embodiments with reference to the attached drawings, in which:

in fig. 1 is a side sectional view of a smoking article and an insert filter element according to the first embodiment;

in fig. 2 is a perspective view of the filter and insert filter element shown in FIG. one;

in fig. 3 is a perspective view of a filter and an insert filter element according to the second embodiment;

in fig. 4 is a side view of a filter and an insert filter element according to a third embodiment;

in fig. 5 is a perspective view of a filter and an insert filter element according to the fourth embodiment;

in fig. 6 is a side sectional view of a filter and an insert filter element according to the fifth embodiment;

in fig. 7 is a side sectional view of a filter and an insert filter element according to the sixth embodiment;

in fig. 8 is a side sectional view of a filter and an insert filter element according to the seventh embodiment;

in fig. 9 is a side sectional view of a filter and an insert filter element according to the eighth embodiment;

in fig. 10 is a side sectional view of a filter and an insert filter element according to the ninth embodiment;

in fig. 11 is a perspective view of a filter and an insert filter element according to the tenth embodiment;

in fig. 12 is a side sectional view of a filter and an insert filter element according to the eleventh embodiment;

in fig. 13 is a side sectional view of a filter and an insert filter element according to the twelfth embodiment;

in fig. 14 is a side sectional view of a filter and an insert filter element according to the thirteenth embodiment;

in fig. 15 is a side sectional view of a filter and an insert filter element according to the fourteenth embodiment;

in fig. 16 is a side sectional view of a filter and an insert filter element according to the fifteenth embodiment;

in fig. 17 is a side sectional view of a filter and an insert filter element according to the sixteenth embodiment;

in fig. 18 is a side sectional view of a filter and an insert filter element according to the seventeenth embodiment;

in fig. 19 is a side sectional view of a filter and an insert filter element according to the eighteenth embodiment;

in fig. 20 is a side sectional view of a filter and an insert filter element according to the nineteenth embodiment;

in fig. 21 is an end sectional view of the insert filter element shown in FIG. 1-19 inserted into any of the filters shown in FIG. 1, 2, 4-19;

in fig. 22 is a cross-sectional end view of an insert filter element with a different cross-sectional shape inserted into a counter-shaped filter;

in fig. 23 is a side sectional view of a filter and an insert filter element, according to another embodiment;

in fig. 24 is a side sectional view of a filter and an insert filter element, in accordance with another embodiment;

in fig. 25A is a three-dimensional view of another embodiment;

in fig. 25B is a side sectional view of a filter according to an embodiment;

in fig. 26 is a side view of another embodiment;

in fig. 27 is a side view of another embodiment;

in fig. 28A-B are end views of the filter and insert, according to embodiments;

in fig. 29A is a side view of a filter and an insert filter element, in accordance with another embodiment;

in fig. 29B and 29C are end views of insert filter elements, in accordance with other embodiments;

in fig. 30 is a side view of a filter and an insert filter element, according to another embodiment;

in fig. 31A and 31B are side views of insertable filter elements, in accordance with other embodiments; And

in fig. 32 is a three-dimensional view of a filter, according to an embodiment.

Detailed description of the invention

In FIG. 1 shows a smoking article 10 having a mouth end 11 and a distal end 12. Smoking article 10 includes a tobacco rod 15 and a filter 20 attached thereto. The tobacco rod 15 is wrapped in tobacco wrapping paper 16.

Filter 20 is shown in more detail in FIG. 2. The filter 20 includes a cylindrical filter region 21 and a tubular filter region 22 located downstream of the cylindrical filter region 21. The cylindrical filter region and the tubular filter region 22 may be formed from a filter material such as cellulose acetate fibers or other material known in the art. in the state of the art.

The cylindrical filter region 21 may be about 12 mm long and the tubular filter region 22 may be about 15 mm long.

The filter material of the cylindrical filter region 21 can be impregnated with an absorbent material such as activated carbon in the form of balls, granules or threads.

An embodiment of a filter 20 containing an activated carbon section is shown in FIG. 3. In this embodiment, the cylindrical section 21 is a dual filter section containing a filter material region 21A, such as cellulose acetate, and an activated carbon region 21B located upstream from it. The filter material region 21A may be about 5 mm long and the activated carbon containing region 21B may be about 7 mm long. Alternatively, the cylindrical section 21 may be an integrated filter section containing two areas of filter material without activated carbon on either side of the central area containing activated carbon.

The cylindrical region 21 and the tubular filter region 22 may be wrapped with a filter wrapping paper 23. The filter 20 may be attached to the tobacco rod 15 by means of a tipping paper 24 surrounding the filter 20. The tipping paper 24 shown in FIG. 1-3 is slightly longer than the filter 20, so that an overlap region is formed when the tip paper 24 is wrapped around the filter 20. An adhesive of some kind, such as an adhesive, can be applied to the inside surface of this overlap region, such as glue, which adheres to the outer surface of the tobacco wrapper. paper 16. Other means known in the art for attaching the filter 20 to the tobacco rod 15 may also be used.

In some embodiments, the filter wrap paper 23 may have carbon granules spotted to the inside surface of the paper 23 using a suitable adhesive.

The filter 20 has a cavity 25 formed by a cylindrical filter region 21 and a tubular filter region 22 that extends from the mouth end 11 and allows the insertion of a cylindrical plug-in filter element 30. The cavity 25 extends along at least part of the length of the filter 20. The shape of the cavity 25 can be chosen to match the shape of the insert filter element 30. In the embodiments shown in FIGS. 1-3, the cylindrical insert filter element 30 corresponds in shape to the hollow cylindrical cavity 25.

In FIG. 4 shows an alternative filter 20. In this embodiment, the rim paper 24 wrapping the cylindrical filter material 21 is formed from a rigid paperboard type material and extends beyond the cylindrical filter material 21 to form a cavity 25 into which insertable filter elements 30 can be inserted. In this embodiment, the tubular filter region 22 is omitted.

An alternative to the filter 20 shown in FIG. 4 may serve as a configuration similar to that shown in FIG. 2, except that the tubular filter area 22 is replaced with a cardboard tube. In this embodiment, the tipping paper 24 would be formed from a conventional tipping paper material having a lower rigidity than the paperboard material described above with reference to FIG. 4. In this alternative embodiment, the filter wrap paper 23 may be shorter than that shown in FIG. 2, covering only the cylindrical filter material 21.

The insert filter element 30 may be of various sizes, such as length and diameter, and may be used in combination with smoking articles of various sizes. The filter 20 and insert filter elements 30 may be used with a variety of smoking articles, ranging in size from "demislim" to "king size", terms well known to those skilled in the art. Preferably, the length of the insert filter element is about 5 to 20 mm.

The insert filter element 30 may be formed from a filter material, such as cellulose acetate or other smoking article filter material known in the art, and may be wrapped around with filter wrapping paper or other suitable material. The wrapper may be embossed with raised areas about 1 mm high and sized according to one embodiment. The material can serve as an absorbent for particulate smoke components.

In one embodiment, the cartridge insert 30 comprises unwrapped acetate fibers spun together using a higher level of plasticization compared to the plasticization level in embodiments with wrapped cartridge inserts 30.

In another embodiment, the cartridge insert 30 may comprise randomly oriented discrete short lengths of cellulose acetate fibers and may be manufactured using process equipment such as a Turmalin machine from Hauni Maschinenbau AG, Germany.

The insert filter element 30 may comprise reconstituted tobacco paper or compressed shredded tobacco leaf, which may be wrapped in reconstituted tobacco paper or filter wrapping paper of a type known in the art. Insert filter element 30 may contain one or more flavors in liquid form or in other form, such as granules, particles, or the like.

Conventionally formed tobacco rods may be cut into lengths suitable for use as an insert filter element 30 and may be wrapped with a suitable wrapper, such as cigarette paper or filter wrapping paper. The wrapper may be embossed with raised areas about 1 mm high and sized according to one embodiment.

In embodiments of the insert filter element 30 having embossed wrappers, the insert filter element 30 may be embossed along its full length or only in part. The insert filter element 30 may be embossed in stripes.

The plug-in filter element 30 can be positioned so as to achieve the so-called "Dalmatian" effect. The "Dalmatian" effect can be obtained by using carbon pellets, whole leaf tobacco, powdered tobacco, or other plant materials or derivatives thereof, such as menthol, added to a filter tow, such as cellulose acetate fiber tow, to produce a mottled effect.

Insert filter element 30 may comprise a combination of a filter material, such as cellulose acetate, with powdered tobacco paper and/or compressed cut tobacco leaf and/or materials used to obtain the visual effect of "Dalmatian", and/or thread. In this case, the insert filter element 30 may be wrapped with powdered tobacco paper or conventional type filter wrapping paper.

The insert filter element 30, in accordance with any of the embodiments described above, may contain flavors such as menthol, lemon, orange, lime, coffee or tea. Leaf-based flavors, such as tobacco, menthol, tea, etc., can be incorporated into filter insert 30 in whole leaf form and/or as extracts.

In some embodiments, cartridge insert 30 may comprise cut tobacco leaf and/or one or more additives selected from the group consisting of mint, borage, tea, various herbs, or any other suitable additive.

The plug-in filter element 30, when inserted, is designed to modify the smoke characteristics when the user smokes the smoking article 10.

It should be appreciated that the smoking article 10b may be equally smokeable without the plug-in filter element 30 placed in the cavity 25. The materials of the cylindrical filter region 21 and the tubular filter region 22 may be selected to provide a pressure drop of in a conventional smoking article, when the user takes a puff on the mouth end 11 of the smoking article 10. The plug-in filter element 30 can be adapted not to significantly change the pressure drop when it is inserted into the cavity 25 of the filter 20.

The filter 20 may contain flavors such as menthol, etc. The plug-in filter element 30 intended for installation in smoking articles with menthol or other additives may contain additives to enhance the smoking experience of the smoking article.

The insert filter element 30 may contain water. In this case, the water filter insert 30 contains capsules, such as capsule 42 described below with reference to FIG. 15, which contains water inside.

Absorbents, such as activated carbon granules, capsules or filaments, can also be introduced into the insert filter element 30.

In one embodiment, the insert filter element 30 may comprise activated carbon granules bonded together with a binder.

In an alternative embodiment, the plug-in filter element 30 may contain carbon having a monolithic structure. Carbon with a monolithic structure, or carbon array, is a formation that is not granules, but, like granular activated carbon, has a large surface area. Carbon arrays do not require the use of a binder, so the surface area of carbon that can be used to absorb the required smoke constituents can be increased compared to carbon structures using a binder. Suitable monolithic carbon structures can be formed by extrusion, and an example of a suitable monolithic structure and a method for its preparation are described in US2005126395, the contents of which are fully introduced into the present description by reference.

Dyes may also be added to provide visual information to the user, such as indications of the composition of the insert filter element 30, such as flavors or scavengers. For example, a green dye may be used to indicate that the cartridge insert 30 has a menthol additive.

If the insert filter element 30 is intended to be inserted into the filter element 20 of a smoking article, it may be useful to use additional means to secure the insert filter element within it. In FIG. 5-20 show various examples of filters 20, insertable filter elements 30, and methods of fixing these elements within filters 20. In the following description, it should be understood that the fixing means are structures that provide retention beyond that achieved by conventional frictional contact between two substantially planar adjoining surfaces.

In the drawings below, for ease of illustration, tobacco rods are not shown, such as the tobacco rods 15 shown in FIG. 1. The following examples are intended to be the same as those given above, with any additional modifications that may be necessary, as will be apparent to those skilled in the art.

In FIG. 5 shows a filter 20 and an insert filter element 30 essentially the same as described above with reference to FIG. 1 and 2. This embodiment, however, differs from that described above in that the tubular filter region 22 is shorter in length than the tubular filter region 22 shown in FIG. 2. Between the tubular filter region 22 and the cylindrical filter region 21 there is a gap 26. The insert filter element 30 may be formed from a compressible material which, after being introduced into the cavity 25, at least partially expands into the gap 26. The insert filter element is thereby 30 can be fixed in the cavity 25.

In FIG. 6 shows the arrangement of a plug-in filter element 30 and a filter 20 having a cavity 25. The plug-in filter element 30 has several small hooks 31 located on its main surface, and the inner surface 25 may have an appropriate number of small loops (not shown) located on it for engagement with hooks 31 when insert filter element 30 is inserted. For example, insert filter element 30 and/or the interior surface of cavity 25 may be covered with Velcro™. Meanwhile, when the insert filter element 30 is inserted into the cavity 25, the withdrawal resistance of the insert filter element 30 is increased, and the insert filter element 30 is difficult to be accidentally removed.

In FIG. 7 shows a filter 20 and an insert filter element 30 with alternative mechanical locking means. The plug-in filter element 30 has a protruding stop portion 32 located on the outer surface at one end of the plug-in filter element 30. A corresponding recess 33, conjugated in shape with the protruding stop part 32, is located in the cavity 25, and can be removed from the mouth end 11 of the filter 20 Upon insertion, the cartridge insert 30 can be rotated to align the protruding stop portion 32 with the recess 33 in the cavity 25 to lock the cartridge cartridge 30 into the cavity 25 of the filter 20.

In FIG. 8 shows a filter 20 and an insert filter element 30 with yet another alternative mechanical locking mechanism. The surface of the insert filter element 30 has a plurality of bulges 34 located thereon to improve the frictional connection between the cavity 25 of the filter insert 20 and the insert filter element 30. The bulges can be formed by perforating the outer wrapper of the insert filter element 30 in an outward direction.

The attachment of the filter insert 30 within the cavity 25 of the filter 20 can also be achieved by forming the filter 20 and the filter insert 30 from materials having different compressibility.

In FIG. 9 shows the filter 20 with the cavity 25 therein and the filter insert 30. In this embodiment, the filter insert 30 is formed from a material softer than the material used to form the filter 20. In this embodiment, the diameter D1 of the filter insert element 30 is larger than the diameter D2 of cavity 25. In use, insert filter element 30 can be compressed by the user to facilitate insertion. Once it is inserted, the outward pressure against the inner walls of the cavity 25, created by the insert filter element 30 returning to its original, uncompressed size, ensures that the insert filter element 30 is held securely.

In FIG. 10 shows an alternative embodiment which is also based on the compressibility of the material of the insert filter element 30. The mouth end 11 of the filter 20 has an inwardly directed flange 35. The diameter D3 of the cavity 25 at the mouth end 11 where the flange 35 is located is smaller than the diameter D2 (shown in FIG. 9) the remainder of cavity 25, as well as the diameter of insert filter element 30. Upon insertion, insert filter element 30 may be compressed to a smaller diameter so that it can be advanced past flange 35 into cavity 25. Insert filter element 30 may then expand substantially to its original, uncompressed diameter, and a secure bond can be obtained between the plug-in filter element 30 and the filter 20.

In FIG. 11 shows an alternative filter 20 in which the tubular filter region 22 comprises an upstream portion 22A and a downstream portion 22B. The two parts 22A and 22B may have the same diameter and different diameters. In one embodiment, the downstream portion 22B may have a smaller diameter than the upstream portion, while the downstream portion 22B may act as a flange, similar to flange 35, described with reference to FIG. 10. In this embodiment, the insert filter element 30 may be formed from a manually compressed material.

In FIG. 12 shows a filter 20 with a cap 36 attached to its mouth end 11. After the insertion of the filter insert 30, the cap 36 can be closed. Cover 36 shown in FIG. 12 is hinged at point 37 at the mouth end 11 of filter 20, however, other methods of attaching cover 36 to filter 20 that are obvious to those skilled in the art can be used. Cover 36 is formed from a material that is generally permeable to smoke. The insert filter element 30 can be dimensioned so that the cover 36 can be closed without compression. Alternatively, cover 36 may compress insert filter element 30 if insert filter element 30 is made of a compressible material.

In FIG. 13 shows how a flap 38 can be attached to the mouth end 11 of a filter 20 at a hinge 39. The flap and hinge 39 can be positioned such that the flap 38 opens inward (as indicated by the crooked arrow) but not outward. In use, the plug-in filter element 30 is pressed into the cavity 25 of the filter 20, while the shutter 38 is pressed inwards so that it lies substantially parallel to the longitudinal axis X of the filter 20, as shown in FIG. 13. If the cartridge insert 30 is made of a manually compressible material, pressure is applied to the cartridge cartridge 30 so that its end closest to the mouth end 11 of the filter 20 is pushed past the flapper 38. The flapper 38 may be spring-loaded so that it returns to a position perpendicular to the longitudinal axis X, when there are no obstacles for this.

In FIG. 14 shows an alternative embodiment of a filter 20 with a cavity 25 therein and an insert filter element 30. In the side section shown in FIG. 14, cavity 25 and cartridge insert 30 are trapezoid-shaped. An insert filter element 30, made of a manually compressed material and having a rectangular cross section, can also be inserted into the trapezoidal cavity 25 to obtain a secure fit.

In FIG. 15 shows an alternative embodiment, with a filter 20 having a cavity 25 therein, and an insert filter element 30 having compressible corrugations 40. The corrugations 40 are formed by a plurality of ribs radially entering the insert filter element 30 and extending generally parallel to the axis and along parts of the length of the insert filter element 30. The parts of the insert filter element 30 not covered by the corrugations 40 form the rod sections 41.

In use, the rod sections 41 allow the cartridge insert 30 to be gripped and placed in the cavity 25 of the filter 20. Prior to installation, the pleats 40 are spring-loaded so that they protrude outward from the remainder of the cartridge filter element 30. When the cartridge cartridge 30 is inserted into the cavity 25 , corrugations 40 are compressed, providing a secure fit.

As an alternative to a mechanical locking mechanism, a chemical locking mechanism, such as shown in FIG. 16. The outer surface of filter insert 30 is coated with adhesive A, and the inner surface of filter insert 30 is coated with adhesive B. In use, when filter insert 30 is inserted into cavity 25, adhesive A comes into contact with adhesive B and a chemical reaction results in to form a connection between the filter 20 and the plug-in filter element 30.

The insert filter element 30 includes a breakable capsule 42 as shown in FIG. 17. And in the alternative, breakable capsule 42 contains an adhesive. When the insert filter element 30 has been inserted into the cavity 25, the filter 20 is compressed in the direction of the arrows shown in FIG. 17. The breakable capsule 42 breaks through and the adhesive contained therein comes out. The insert filter element 30 may be formed from a material that allows the adhesive to move to the outer surface of the insert filter element 30. The adhesive secures the filter insert 20 and the insert filter element 30.

The breakable capsule 42 may contain water as well as, or instead of, an adhesive along with any flavor, color, or scavenger described herein.

An alternative arrangement of the adhesive between filter 20 and cartridge insert 30 is shown in FIG. 18. In this embodiment, the adhesive is applied only to the outer surface of the insert 30. Once the filter insert 30 has been inserted into the cavity 25 of the filter 20, the outer surface of the filter 20 can be pressed against each other in the direction of the arrows. Under the action of the pressure thus applied to the adhesive, on the outer surface of the insert filter element 30, the adhesive of the filter 20 is bonded to the insert filter element 30.

Alternatively, an adhesive may be applied to the outer surface of the insert 30 as shown in FIG. 19. The adhesive may be applied in one or more radially spaced strips 43 extending along the length of the filter insert 30. Prior to use, the strips may be covered with a protective sheath, which is removed immediately prior to the insertion of the filter insert 30 into the cavity 25 of the filter 20.

Although the cartridge insert 30 described above may be formed from a filter material such as cellulose acetate, other materials may be used in alternative embodiments. For example, the insert filter element 30 may be formed from wax or the like. The inserted filter element 30 may be slightly melted by the heat transferred during smoking from the distal end 12 of the smoking article 10 shown in FIG. 1. Insert filter element 30 may thus be adhered to the inner surface of cavity 25 of filter 20. Slight melting of the wax may also release the flavors and flavors contained within insert filter element 30.

In FIG. 20 shows an alternative plug-in filter element 44 in the form of a capsule made of gelatin or other material with similar physical properties. Such an insert filter element 44 may take the form of the cavity 25 after it has been inserted into it. The capsule-shaped filter insert 44 may be breakable, and may rupture to release its contents when the filter insert 44 is inserted and the filter 20 is crushed.

While the insert filter element 30 described above with reference to FIG. 1-20 is intended to be inserted into a cavity 25 having a circular cross-section at its end, as shown in FIG. 21, cavities with other cross-sectional shapes can also be used.

In FIG. 22 is an end view illustrating the mouth end 11 of the filter 20 of the smoking article 10. The contour of the cavity 25 is irregularly shaped in the end view and the insert 30 in the end view has a mating shape to provide a secure fit. The shaped forms of the end sections, for example, as shown in Fig. 22 are preferred because they allow an increase in the contact surface area between the insert filter element 30 and the filter 20.

In FIG. 23 shows a filter 20 and an insert filter element 30 according to another embodiment. In this embodiment, the insert filter element 30 has a barb 50. The barb 50 may have one or more teeth 55. When the insert filter element 30 is inserted into the cavity 25 of the filter 20, the barb 50 and the barbs 55 are at least partially immersed in the cylindrical filter region 21 filter 20 which helps to hold the cartridge insert 30 in the filter 20.

In another embodiment shown in FIG. 24, the insert filter element 30 has a screw thread 60 along its outer surface. The cavity 25 of the filter 20 may also have an internal thread 61 on its inner surface. Upon insertion of the filter insert 30, it may be twisted so that the male screw thread 60 engages with the female screw thread 61 so that the filter insert 30 can be held within the cavity 25 of the filter 20.

The screw threads 60, 61 may be formed by casting or extrusion of fill material or plastic. Alternatively, the screw thread may be formed by embossing the inner surface of the cavity 25 and/or the outer surface of the cartridge insert 30, for example, when the cavity is formed with stiff paper or board material that can be embossed, or when the embossment can be applied to the paper. for a filter wrap surrounding the insert filter element 30. The screw threads 60, 61, in some embodiments, may be formed either in the insert filter element 30 or in the cavity 25, but not in both places at once, forming channels between the screw threads, along through which smoke can pass during use.

In another embodiment, the insert filter element 30 may be inserted into the cavity 25 through an opening located on the side of the filter 20, as shown in FIG. 25A. In FIG. 25B shows a filter 20 according to this embodiment. The downstream cylindrical filter region 62, the intermediate tubular filter region 63, and the upstream cylindrical filter region 64 are arranged end to end as shown in FIG. 25B. The intermediate tubular filter region 63 is cut out to allow insertion of the insert filter element 30. In filter wrapping paper, rim paper, or any other suitable wrapper that can be used to secure the downstream cylindrical filter region 62, the intermediate tubular filter region 63 and upstream cylindrical filter region 64, a portion may also be cut to allow insertion of insert filter element 30 into cavity 25. In use, downstream cylindrical filter region 62 retains insert filter element 30 within filter 20 .

In FIG. 26 shows an embodiment in which an insert filter element 30 is inserted into a sleeve 70. The sleeve 70 comprises a cylindrical region 71 of filter material, such as cellulose acetate, having a cavity 72 extending along a portion of the length of the cylindrical region 71 from the upstream end of the cylindrical region 71 The sleeve 70 also includes a sleeve portion 73 which may be comprised of a rigid cardboard outer wrapper that is longer than the cylindrical region 71 so that the smoking article can be inserted into the hollow region defined by the sleeve portion 73. In use, the insert filter element 30 may be inserted into the cavity 72 before the sleeve is placed on the smoking article so that the sleeve portion 73 overlaps the mouthpiece portion of the smoking article. In this case, the sleeve 70 during use holds the plug-in filter element 30.

In FIG. 27 shows an embodiment where the plug-in filter element is a spike 75 that can be inserted into a conventional smoking article filter. The spike 75 may be formed from a material containing plastic, wood, or some other suitable material. The spike 75 may have additives, such as flavoring, or an absorbent applied thereto, to impart desired organoleptic properties to the smoke passing through the filter.

In FIG. 28A, 28B and 28C are end views of the filter 20 illustrating the mouth end 11 into which the plug-in filter element 30 is inserted according to respective particular embodiments. In these embodiments, the insert filter element 30 and the cavity 25 of the filter 20 have different cross-sectional shapes in rear view.

In FIG. 28A shows an insert filter element 30 having a circular cross section which is inserted into a cavity 25 having a triangular cross section. In FIG. 28B shows an insert filter element 30 having a circular cross section inserted into a cavity 25 having a square cross section. In FIG. 28B shows an insert filter element 30 with a square cross section inserted into a cavity with a circular cross section. As seen in FIG. 28A-B, the use of insert filter elements 30 and cavities 25 of different shapes provides the formation of a channel 76. The number and shape of such channels 76 can be changed by changing the combination of shapes of insert filter elements 30 and cavities 25, as can be understood by comparing FIG. 28A-B. By choice of shape, a compression fit between filter 20 and cartridge insert 30 can be achieved, which may assist in retaining cartridge cartridge 30 in the filter. . 28A-B.

In FIG. 29A shows an insert filter element 30 according to another embodiment. The insert filter element 30 according to this embodiment includes an array of filter material 77, such as cellulose acetate, having a plurality of grooves 78 extending along at least a portion of the length of the insert filter element 30 along its outer portion. The insert filter element 30 is wrapped in filter wrapping paper or other suitable wrapping. The wrapper may be perforated to allow a portion of the smoke to pass through, and the perforations may align with the troughs 78. The insert filter element 30 may have a second wrapper 79 that does not follow the contours of the outer troughs 78 so that channels are formed between the second wrapper and the array of filter material. , as shown in FIG. 29B. In use, when the insert filter element 30 in FIG. 29A is inserted into the cavity 25, the smoke can pass through the perforations in the wrapping paper of the inserted filter element 30, providing a specific smoking experience. In FIG. 29B shows an insert filter element 30 according to an embodiment where the second wrap 79 is not used.

As an alternative to the embodiment shown in FIG. 29A-B, the flutes may be in the form of outer spirals, creating a modified smoke path.

In FIG. 30 shows an embodiment where the insert filter element 30 has a cylindrical portion 80 and a tubular portion 81. The cylindrical portion 80 may be formed from a filter material such as cellulose acetate. The tubular portion 81 may be formed from cardboard, although other materials may be used. The outer surface of the cylindrical part 80 and the inner and outer surfaces of the tubular part 81 may be serrated so that the cylindrical part 80 can be held inside the tubular part 81 and so that the tubular part 81 can be held inside the cavity 25 of the filter 20.

In FIG. 31A shows another embodiment. The insert filter element 82 includes a thin insert portion 83 for insertion into the cavity 25 and a thicker, non-insertable (non-insertable) portion 84. Both portions 83, 84 may be made from any of the previously described materials.

In FIG. 31B shows an insert filter element 85 similar to the insert filter element 82 shown in FIG. 31A, except that the insert filter element 85 further includes a sleeve 86 that can fit snugly over the outer surface of the filter 20. The sleeve 86 may be formed from any suitable material such as paper or cardboard.

In FIG. 32 shows a filter 90 according to another embodiment. The filter 90 has two cavities 25. An insert filter element 30 may be inserted into each cavity 25. In alternative embodiments, more than two cavities may be used. As shown in the previously discussed embodiments, the term smoking article encompasses smoking products, such as cigarettes, cigars and cigarillos based on tobacco, tobacco derivatives, loosened tobacco, reconstituted tobacco or tobacco substitutes, as well as products heated without combustion.

Based on the above detailed consideration, it will be clear to a specialist that in particular embodiments, it is proposed:

A plug-in filter element for a filter of a smoking article, having locking means for fixing the plug-in filter element in the filter of a smoking article.

That the fixation means have a plurality of hooks located around the main surface of the plug-in filter element.

That the locking means comprise a male locking element adapted to be gripped by the female locking element.

That the means of fixation include several bulges.

That the means of fixation include a corrugated area.

That the insert filter element is formed from a manually compressed material.

That the means of fixation include an adhesive positioned so as to attach the plug-in filter element to the filter.

That the adhesive is applied to the main surface of the cartridge insert.

That the adhesive is applied in at least one strip along the main surface of the insert filter element. Capsule containing adhesive.

That the insert filter element has an end cross-sectional shape adapted to increase the surface area of the insert filter element.

That the cartridge insert contains a smoke modifier.

That the smoke modifier includes absorbent material.

That the smoke modifier includes a flavoring agent.

That the flavoring includes at least one of the group consisting of: menthol, lemon, orange, lime, coffee and/or tea.

That the smoke modifier includes dye.

That the smoke modifier includes water.

That the smoke modifier is encapsulated in a breakable capsule contained within an insert filter element.

That the smoke modifier is in the form of a thread.

That the smoke modifier is in the form of a granule.

A plug-in filter element for a smoking article filter containing a smoke modifier.

That the smoke modifier is encapsulated in a breakable capsule contained within an insert filter element.

That the breakable capsule contains water.

That the smoke modifier is in the form of a granule or a filament.

That the smoke modifier includes a carbon absorber.

That the smoke modifier includes dye.

That the smoke modifier includes a flavoring agent.

That the smoke modifier includes at least one of the group consisting of: menthol, lemon, orange, lime, coffee and/or tea.

That the smoke modifier includes water.

The filter of a smoking article, having a cavity for introducing an insert filter element into it.

That the cavity is at least partially delimited by a wall formed from the filter material.

That the cavity is at least limited by a wall formed from paper.

That the cavity is at least partially enclosed by the cardboard tube.

The filter of a smoking article, having a cavity with means for fixing the filter element located inside it.

That the filter of the smoking article has a female receiving element adapted to receive the male retaining element of the plug-in filter element.

That the locking means comprise a removable cover hinged around a point located at the mouth end of the filter of the smoking article.

That the filter cavity of the smoking article has a screw thread inside.

That the means of fixation include a flap that can only open inwards.

That the means of fixation include an adhesive applied to the main surface of the cavity.

A set of parts including an insert filter element and a smoking article filter.

A smoking article in which the plug-in filter element is inserted into the filter cavity of the smoking article.

Embodiments of the invention are presented so as to comply with applicable law and / or legal regulations, for example, regulatory requirements relating, in a particular example, to flavors, additives, emissions, constituents and / or others. For example, the invention can be carried out so that that the smoking article embodying the invention complies with current regulations before and after it is used or manipulated by the smoker.

To consider various aspects of the claimed invention and its presentation, the present description shows the possibility of realizing the invention (s) and obtaining high-quality filters for smoking articles and insert filter elements by specific examples of various embodiments. The advantages and features given in the description refer to the implementation options and are not exhaustive and (or) exclusive. They are presented only to improve understanding and clarify the claimed features. It should be borne in mind that the advantages, embodiments, examples, functions, features, constructions and (or) other features of the invention should not be considered as limiting the invention defined by the claims, or equivalents of the claims, and that within the scope of claims and (or) essence inventions, other embodiments and modifications may be used. Various embodiments may, respectively, contain, consist of, or essentially consist of various combinations of the disclosed elements, components, features, parts, steps, means, and so on. In addition, the description may include other inventions not claimed here, but which may be claimed in the future.

Claims (11)

1. A plug-in filter element for a non-burning heated product, having a cavity formed in the mouth end of this non-burning heated product, containing a flavoring additive, including tobacco and a filter material, and a fixation means for holding the plug-in filter element in the specified cavity, and the plug-in filter element includes a thin insertion part, made with the possibility of insertion into the specified cavity, and a thicker, non-introducible part. 2. An insert filter element according to claim 1, wherein the locking means includes a mechanical locking means. 3. Plug-in filter element according to claim 1 or 2, containing a screw thread. 4. Plug-in filter element according to claim 1 or 2, which is a plug-in spike. 5. An insert filter element according to claim 1, formed from a manually compressed material. 6. The plug-in filter element according to claim 1, in which the fixation means contains an adhesive. 7. Plug-in filter element according to any one of paragraphs. 1-6, the shape of the end cross-section of which provides an increase in the surface area of the plug-in filter element. 8. Plug-in filter element according to any one of paragraphs. 1-7 containing dye. 9. Plug-in filter element according to any one of paragraphs. 1-8, wherein the flavor further comprises at least one of the following: menthol, lemon, orange, lime, coffee and/or tea. 10. Plug-in filter element according to any one of paragraphs. 1-9, in which the fixing means holds the plug-in filter element in the cavity of the product to be heated without combustion. 11. A set of parts containing a plug-in filter element according to any one of paragraphs. 1-10 and a product heated without combustion, having a cavity containing a means of fixing the filter element placed in it.

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