[0001] The present invention relates to filters for smoking articles.
[0002] The filtering material typically used in smoking article filters is a continuous
tow of filamentary cellulose acetate plasticised with triacetin, which is gathered
together to form a solid cylindrical rod of filtering material. The solid cylindrical
rod of filtering material may then be chopped into segments to provide individual
filters.
[0003] Smoking articles such as conventional tobacco cigarettes are most commonly sold filter
tipped. In filter tipped smoking articles, a filter is attached to a rod of tobacco
for example using one or more wrappers.
[0004] Marijuana smoking articles, also known as "joints", are typically hand-rolled by
the smoker. Marijuana smoking articles do not typically include a filter comprising
a cylindrical rod of acetate fibres. This is because the cellulose acetate is thought
to excessively filter the active ingredients in marijuana smoke, for example CBD and/or
THC. Many marijuana smokers prefer to smoke marijuana smoking articles using a rudimentary
smoker-prepared mouthpiece, commonly known as a "roach". A roach is generally prepared
by rolling a strip of cardboard at an angle to edge of the strip to form a conical
mouthpiece.
[0005] Roaches do not significantly filter the marijuana smoke, and simply serve to prevent
the heat from the smoke and/or burning particles in the smoke, e.g. burning Marijuana
particles from burning the smoker's lips whilst inhaling.
[0006] Disadvantages of roaches include the significant amount of time for the smoker to
prepare and an undesirable, untrustworthy and unreproducible crude-looking end appearance.
Further, a roach does not provide the same firmness and/or experience as a manufactured
cigarette filter.
[0007] Accordingly, it is desirable to provide a refined, reproducible and trustworthy looking
smoking article filter for use with a marijuana smoking article, either for use as
a "roll-your-own" product, or for use in a manufactured filter tipped marijuana smoking
article (e.g. cigarette). It is desirable that the smoking article filter should prevent
the smoker's lips from getting burnt and provide a reproducible, refined and trustworthy
looking end appearance similar to that of a modern filter-tipped cigarette, whilst
(like roaches) not significantly reducing the quantities of active ingredients in
the marijuana smoke.
[0008] WO2014/064087A1 discloses a tip comprising bicomponent fibres for a smoking article.
WO2014/068295A1 discloses a channel containing filter for a smoking article.
US2016/0165950A1 discloses a smoking article filter including a non-porous micro capillary tube.
US2016/0366926 discloses a method of manufacturing a smokable cannabis product.
US2017/0273349A1 discloses a cannabis-hemp smoking blend.
US4515170 discloses a ventilated mouthpiece for a smoking article.
GB625391 discloses a tube containing cigarette filter. From
US-A-5 195 543 is a filter known which is of a non-uniform cross-section along its length and which
comprises non-throughgoing channels arranged in a triangular pattern.
[0009] According to the invention in a first aspect there is provided a mouthpiece or filter(e.g.
for use in a smoking article) comprising a longitudinally extending (e.g. cylindrical)
rod of filtering material of uniform cross section along its full length, the longitudinally
extending rod comprising three longitudinally extending channels which extend along
(e.g. through) the full length of the mouthpiece or filter wherein the three channels
are arranged in a triangular pattern. Preferably the three channels are surrounded
by the filtering material along the full length of the mouthpiece or filter, but open
at both ends.
[0010] It will be appreciated that the longitudinally extending rod of filtering material
is of uniform cross-section along its full length (for example, being of uniform annular
cross-section along its full length with the inner surface of the annular cross-section
defining the channels). The three channels may be of uniform cross-section along their
full length. The three channels may be of circular cross section, or other cross section
(e.g. star-shaped, crescent shaped, flower-shaped, cross-shaped, X-shaped etc.)
[0011] In another example, the longitudinally extending rod of filtering material is of
uniform outer dimension along its full length but the channels (which may or may not
be of uniform cross-section along their full length) are helical about the longitudinally
extending axis of the filter (e.g. the channels are in the form of a spiral about
the longitudinal axis of the filter). A helical channel increases the distance the
marijuana smoke has to travel to reach the smoker's lips, thus providing a cool yet
minimally filtered smoke. This advantage is not possible using existing roach technology.
[0012] It will be appreciated that whilst the bulk of the smoke passes directly to the smoker's
mouth there will be some filtration effect from the mouthpiece because the internal
side walls of the rod of filtering material will reduce the amount of mainstream smoke
produced by the smoking article. Therefore, the mouthpiece of the present invention
may be referred to as a filter. The level of filtration provided by the mouthpiece
or filter may be varied according to the user's preference by varying the features
of the mouthpiece or filter e.g. varying the diameter of the channel(s) present. The
level of filtration may be varied for example from providing no filtration to providing
some filtration (e.g. 2-3%).
[0013] The present invention provides a number of benefits over the prior art. A mouthpiece
or filter according to the present invention allows for smoke constituents to be focused
towards the user and for cooling of the smoke as it travels to the user. The mouthpiece
or filter also may prevent embers or loose particulate matter from reaching the user's
mouth and provides a grip point for the users fingers at the end of the product. Further,
the mouthpiece or filter of the present invention may provide a unique visual experience
for the user, for example by having a certain colour (e.g. red, yellow or green) or
being capable of colour change during use of the product. The mouthpiece or filter
may provide a similar smoking experience (e.g. in terms of mouth-feel) to a cigarette
due to the uniformity and firmness of the mouthpiece, and/or may make it easier to
make the 'joint'.
[0014] The three channels may be of circular, semi-circular (D-shaped), square, triangular,
hollow star shaped, trilobal, pentagonal or cog-shaped cross-section, or of a cross-section
in the shape of a logo or other pattern. Mouthpieces or filters having non-cylindrical
channels, particularly those channel mouthpieces or filters having a complex and/or
unsymmetrical cross-sectional profile may be of particular use in combatting anti-counterfeiting.
Channel mouthpieces or filters wherein the channel is not of uniform cross-section
along its full length may also be of use in combatting anti-counterfeiting.
[0015] The three channels which extend the full length of the mouthpiece or filter may be
of uniform cross-section along the full length of the mouthpiece or filter. The rod
of filtering material is preferably of uniform outer dimensions along its full length
(e.g. a cylinder of uniform dimensions along its full length).
[0016] Channel mouthpieces or filters may be manufactured by pulling a continuous bundle
of cellulose acetate filamentary tow, optionally with triacetin already applied thereto,
through a fix die having an external diameter equal to that of the desired external
diameter of the mouthpiece or filter to be produced, the fix die including a protruding
inner rod (or mandrel) extending through the die having a cross-sectional profile
equal to that of the desired cross-section of the channel . When the filamentary tow
is pulled through the die, it passes around the inner rod such that on exiting the
die, a mouthpiece or filter is formed having a channel having a cross-sectional profile
equivalent to that of the inner rod. Heated steam may be applied to the filamentary
tow whilst the filamentary tow is in the die. The heated steam may be applied via
a duct in the die. The heated steam may be for curing plasticizer applied to the filamentary
tow (if present), allowing the mouthpiece or filter to maintain the shape of the die
after exiting the die.
[0017] The inclusion of three channels extending along (e.g. through) the full length of
the mouthpiece or filter allows a significant quantity of smoke (e.g. marijuana smoke,
e.g. hemp smoke, e.g. oregano smoke) to pass directly to the smoker's mouth without
being overly filtered. The mouthpiece or filter also provides a refined end appearance
and prevents the smoker's fingers and/or mouth from being burnt.
[0018] The mouthpiece or filter of the present invention comprises three channels arranged
in a triangular pattern. The use of multiple channels may further cool the smoke and
prevent embers from reaching the user's mouth.
[0019] When the mouthpiece or filter comprises 3 longitudinally extending channels, the
longitudinally extending rod of filtering material is of uniform cross-section along
its full length with the channels arranged in a triangular pattern (see e.g. Figure
4).
[0020] The filtering material may be, for example, any of those materials (usually filamentary,
fibrous, web or extruded) conventionally employed for tobacco smoke filter manufacture.
The filtering material may be natural or synthetic filamentary tow, e.g. of cotton
or plastics such as polyethylene or polypropylene, or cellulose acetate filamentary
tow. The filtering material may be a thermoplastic or otherwise spinnable polymer,
for example polypropylene, polyethylene terephthalate or polyactide. It may be, for
example, natural or synthetic staple fibres, cotton wool, web material such as paper
(usually creped) and synthetic non-wovens, and extruded material (e.g. starch, synthetic
foams). Preferably the filtering material comprises cellulose acetate filamentary
tow.
[0021] The fibres (e.g. of fibre tow, e.g. cellulose acetate tow) may be plasticised. In
other words, the filtering material may optionally include a plasticiser. The formation
of plasticised tow is well known in the art. The plasticiser (which plasticises the
fibres) may be, for example, triacetin, triethyleneglycol diacetate (TEGDA) or polyethylene
glycol (PEG). The fibres may be fibres of plasticised cellulose acetate tow. The fibres
may be cellulose acetate tow which has been plasticised with e.g. triacetin.
[0022] The filtering material may optionally include a binder material. The filtering material
may optionally include a water soluble binder material. Examples of water soluble
materials include water soluble polymer materials such as polyvinyl alcohol, polyvinyl
pyrrolidone, polyvinyl ether, starches, polyethylene glycols and polypropylene glycols;
blends of water soluble binders with plasticisers such as triacetin, triethyleneglycol
diacetate (TEGDA), or polyethylene glycol (PEG); and hot melt water soluble binders
in particulate form. The inclusion of a water soluble binder material may further
enhance the ability of the filter to be readily and swiftly degraded e.g. under environmental
conditions.
[0023] The filtering material may include an additive. The additive may be a particulate
additive. The particulate additive may be any particulate additive suitable for use
in a smoke filter - e.g. activated carbon, zeolite, ion exchange resin (e.g. a weakly
basic anion exchange resin), sepiolite, silica gel, alumina, molecular sieves, carbonaceous
polymer resins and diatomaceous earths. The particulate additive may be a mixture
of two, or more, materials. The additive may be a pigment, for example a pearlescent
pigment or a thermo-chromatic pigment,
[0024] The additive may include a smoke modifying agent (for example a flavourant). This
may be any smoke modifying agent (e.g. flavourant) known or suitable for use in a
smoking article such as a cigarette, for example flavourant such as menthol, spearmint,
clove oil etc. The flavourant may be any flavouring agent known for use in smoke filters.
For example, the flavouring agent may be menthol, spearmint, peppermint, nutmeg, cinnamon,
clove, lemon, chocolate, peach, strawberry, vanilla etc. The smoke modifying agent
(flavourant) may be applied to the filtering material in liquid form. The smoke modifying
agent (flavourant) may be liquefied prior to application to the filtering material,
for example by heating above the melting point, for example by mixing with a liquid
carrier. The smoke modifying agent (flavourant) may be applied to the filtering material
prior to the filtering material entering the die, for example immediately before entering
the die. The smoke modifying agent (flavourant) may be mixed with and applied with
a plasticiser, for example by spraying the mixture of smoke modifying agent (flavourant)
and plasticiser onto the filtering material. A preferred smoke modifying agent (flavourant)
is menthol. For example, the additive may be sepiolite granules to which menthol flavourant
has been applied.
[0025] The filtering material may include fully enclosed (e.g. embedded) pocket(s) of additive
embedded therein. The additive may be a particulate additive such as activated carbon
(see above), which is for example enclosed within the filtering material as a discrete
pocket or pod of particles of particulate additive which is substantially separate
from, and fully enclosed within, the filtering material. In another example, the fully
enclosed (e.g. embedded) pocket(s) of additive may be a frangible capsule or capsules,
or one or a plurality of frangible microcapsules. The capsule(s) or microcapsule(s)
may contain a variety of media - e.g. a smoke modifying agent such as a flavourant
(such as those flavourants disclosed above) and/or a liquid, solid or other material
e.g. to aid smoke filtration. The use of capsules or microcapsules is well known in
the art.
[0026] If pocket(s) of additive (e.g. flavour capsule[s]) is/are present, preferably the
channels are semi-cylindrical in shape and the pocket(s) of additive (e.g. flavour
capsule[s]) is/are provided in the rod of filtering material adjacent the semi-cylindrical
channels.
[0027] The flavourant may be provided in and/or on a thread. "Flavour Thread" smoking article
filters are well known in the art. Such filters incorporate a thread or tape element,
typically longitudinally aligned therein, the element carrying a smoke modifying agent
such as a flavourant. These were originally proposed in
US 4281671, in which a cotton sewing thread was the preferred element. This document also disclosed
how the thread could be coloured, e.g. with different colours denoting different flavours.
The thread may be provided fully enclosed within the rod of filtering material adjacent
a semi-cylindrical channel.
[0028] The flavourant may be provided in and/or on an extruded element. "Tube filter" smoking
article filters are well known in the art. Such filters incorporate one or more continuous
extruded element(s) extending longitudinally of the rod. These filters were proposed
in
WO2011/058319. The extruded element may be of a hollow or solid cross-section. The extruded element
may be provided fully enclosed within the rod of filtering material adjacent a semi-cylindrical
channel. The flavourant may be provided in and/or on the extruded element in liquid
form, for example as a liquid sprayed onto the external surface of the of the continuous
extruded element.
[0029] If a thread and/or an extruded element is present, preferably the channels are semi-cylindrical
in shape and the thread and/or extruded element is provided in the rod of filtering
material adjacent to a semi-cylindrical channel.
[0030] The outer circumference of the mouthpiece or filter may be between 10.0 mm and 50
mm, for example between 14.0 mm and 35 mm, for example between 16 and 30 mm, for example
between 18.0 mm and 28 mm, for example between 22 mm and 26 mm, for example about
25 mm. Preferably, the mouthpiece or filter may have a circumference from 15 mm to
22 mm. The channel or channels present in the mouthpiece or filter of the present
invention may for example have a diameter from 0.5 mm to 10 mm, for example from 1
mm to 8 mm, for example from 1 mm to 4 mm, for example from 4 mm to 8 mm, for example
from 3 mm to 6 mm.
[0031] The length of the mouthpiece or filter may be between 4.0 mm and 50 mm, for example
between 5.0 mm and 40 mm, for example between 10 and 35 mm, for example between 18.0
mm and 30 mm, for example between 22 mm and 28 mm, for example about 25 mm. Preferably,
the mouthpiece or filter may have a length from 15 mm to 30 mm.
[0032] In mouthpieces or filters according to aspects of the invention, the smoke filtering
material may be over wrapped with a wrapper or plugwrap, for example a wrapper of
paper, for example a wrapper of an air-permeable paper. Particulate additives such
as those discussed above may be applied to the wrapper or plugwrap surrounding the
filter material, for example as described in
GB 2261152. The wrapper and/or plug wrap may alternatively be derived from a plant in the Cannabis
genus, for example Cannabis sativa, for example Cannabis sativa sativa, Cannabis sativa
indica or Cannabis sativa ruderalis or from a mixture thereof. Such wrappers are well
known in the art and described in
WO2017068437, for example.
[0033] Any mouthpiece or filter or mouthpiece or filter smoking article according to the
invention may be unventilated, or may be ventilated by methods well known in the art,
e.g. by use of a pre-perforated or air-permeable wrapper(s) (plugwrap), and/or laser
perforation of wrapper(s) (plugwrap) and tipping overwrap. A ventilating full tipping
overwrap may likewise be inherently air-permeable or provided with ventilation holes,
and in ventilated products where both filter plugwrap and tipping overwrap are present
ventilation through the overwrap will usually be in register with that through the
plugwrap. Ventilation holes through a filter plugwrap, or through a tipping overwrap,
or through both simultaneously, may be made by laser perforation during mouthpiece
or filter or mouthpiece or filter smoking article production.
[0034] According to the invention in a further aspect there is provided a multiple rod comprising
a plurality of mouthpieces or filters as described above and/or herein integrally
joined end-to-end in a mirror image relationship.
[0035] It will be appreciated that the smoker can customise their joint. For example, if
the smoker wants to regulate or adjust the amount of filtration they can use the mouthpiece
with a conventional filter segment, or vary the length of the mouthpiece. If they
wish to add flavour/capsule/additive etc. they can use a mouthpiece or filter according
to the invention which includes flavour/capsule/additive (as discussed above, see
also Fig 3). It will also be appreciated that a mouthpiece or filter according to
the invention could be used with a conventional flavour/capsule/additive segment to
adjust the smoking sensation.
[0036] According to the invention in a further aspect there is provided the mouthpiece or
filter of the invention for use in a smoking article comprising one or more smokable
material(s) other than tobacco. The smokable material other than tobacco may be prepared
from a plant in the Cannabis genus, for example Cannabis sativa, for example Cannabis
sativa sativa, Cannabis sativa indica or Cannabis sativa ruderalis or a mixture thereof.
Additionally or alternatively the smokable material other than tobacco may comprise
oregano and/or hemp.
[0037] According to the invention in a further aspect there is provided the use of the mouthpiece
or filter of the invention for filtering the smoke of a smoking article comprising
one or more smokable material(s) other than tobacco. The smokable material other than
tobacco may be prepared from a plant in the Cannabis genus, for example Cannabis sativa,
for example Cannabis sativa sativa, Cannabis sativa indica or Cannabis sativa ruderalis
or a mixture thereof. Additionally or alternatively the smokable material other than
tobacco may comprise oregano and/or hemp.
[0038] According to the invention in a further aspect there is provided a smoking article
comprising the smoking article mouthpiece or filter of the first or second aspect
of the invention joined to a wrapped rod comprising a smokable material other than
tobacco. The smokable material other than tobacco may be prepared from a plant in
the Cannabis genus, for example Cannabis sativa, for example Cannabis sativa sativa,
Cannabis sativa indica or Cannabis sativa ruderalis or a mixture thereof. Additionally
or alternatively the smokable material other than tobacco may comprise oregano and/or
hemp.
[0039] The present invention will now be illustrated with reference to the following Examples
and the attached drawings in which
FIGURE 1 schematically illustrates a comparative example of a mouthpiece or filter;
FIGURES 2 and
3 schematically illustrate another comparative example of a mouthpiece or filter; and
Figure 4 illustrates a mouthpiece or filter according to the present invention.
Examples
[0040] Figure 1 shows a smoking article filter
1 of 27 mm length and 24.5 mm circumference comprising a longitudinally extending annular
rod
2 of filtering material. The filtering material comprises cellulose acetate filamentary
tow. The annular rod
2 of filtering material defines a longitudinally extending cylindrical channel
3 which extends along the full length of the filter.
[0041] Smoking article filter
1 may be manufactured by pulling a continuous bundle of cellulose acetate filamentary
tow, optionally with triacetin already applied thereto, through a fix die having an
external diameter equal to that of the desired external diameter of the filter, the
fix die including a protruding inner rod (or mandrel) extending through the die having
a cross-sectional profile equal to that of the desired cross-section of the channel
3. When the filamentary tow is pulled through the die, it passes around the inner rod
such that on exiting the die, a filter
1 including an annular rod
2 of filtering material is formed, the filter
1 having a channel
3 having a cross-sectional profile equivalent to that of the inner rod. Heated steam
may be applied to the filamentary tow whilst the filamentary tow is in the die. The
heated steam may be applied via a duct in the die. The heated steam may be for curing
plasticizer applied to the filamentary tow (if present), allowing the filter
1 to maintain the shape of the die after exiting the die.
[0042] Figure 2 shows a smoking article filter
101, of 27 mm length and 24.5 mm circumference comprising a longitudinally extending
annular rod
102 of filtering material. The filtering material comprises cellulose acetate filamentary
tow. The annular rod
102 of smoking filtering material includes a longitudinally extending channel
103 of semi-circular (D-shaped) cross-section which extends along the full length of
the filter. A flavour capsule
104 is provided within the filtering material which forms the annular rod
102, approximately half way along the full length of the rod. Smoking article filter
101 may be manufactured using the same method as used to manufacture smoking article
filter
1. The insertion of flavour capsule
104 into the annular rod
102 of filtering material may be carried out using methods well known in the art.
[0043] Figure 3 shows a cross-section of the smoking article filter
101 of Figure 2 (denoted by the plane
105-105 shown in Figure 2), showing the D-shaped cross section of channel
103 and the capsule
104 within the filtering material.
[0044] Figure 4 shows a smoking article filter 201 of 27 mm length and 24.5 mm circumference
comprising a longitudinally extending rod 202 of filtering material.. The filtering
material comprises cellulose acetate filamentary tow. The rod 202 defines three longitudinally
extending cylindrical channels 203 arranged in a triangular pattern which extend the
full length of the filter. The smoking article filter 201 may be produced by the same
method of manufacture used to produce the smoking article filter 1 of Figure 1, wherein
three mandrels will be used to produce the three channels 203.
1. A mouthpiece or filter 201 comprising a longitudinally extending rod 202 of filtering
material of uniform cross section along its full length, the longitudinally extending
rod 202 comprising three longitudinally extending channels 203 which extend along
the full length of the mouthpiece or filter wherein the three channels are arranged
in a triangular pattern.
2. A mouthpiece or filter 201 according to claim 1 wherein the three channels 203 have
a uniform cross-section along the full length of the mouthpiece or filter.
3. A mouthpiece or filter 201 according to any preceding claim, wherein the channels
203 which extends the full length of the mouthpiece or filter are helical or substantially
helical, or wherein the channels 203 which extends the full length of the mouthpiece
or filter are semi-cylindrical.
4. A mouthpiece or filter 201 according to any preceding claim, wherein the filtering
material comprises cellulose acetate filamentary tow, or wherein the filtering material
comprises a thermoplastic or otherwise spinnable polymer, for example polypropylene,
polyethylene terephthalate or polyactide.
5. A mouthpiece or filter 201 according to any preceding claim, wherein the filtering
material comprises a plasticizer, for example triacetin, triethyleneglycol diacetate
(TEGDA), or polyethylene glycol (PEG).
6. A mouthpiece or filter 201 according to claim 1 , wherein the filtering material comprises
a pigment and/or a flavourant, or wherein the filtering material comprises multiple
pigments and/or multiple flavourants.
7. A mouthpiece or filter 201 according to claim 6, wherein the flavourant is provided
within a flavour capsule.
8. A mouthpiece or filter 201 according to any preceding claim, wherein the filtering
material comprises carbon, for example activated carbon.
9. A mouthpiece or filter 201 according to any preceding claim, further comprising a
wrapper or plugwrap.
10. A mouthpiece or filter 201 according to claim 9, wherein the wrapper or plug wrap
is derived from a plant in the Cannabis genus, for example Cannabis sativa, for example
Cannabis sativa sativa, Cannabis sativa indica or Cannabis sativa ruderalis, or a
mixture thereof.
11. A mouthpiece or filter 201 according to claim 9 or claim 10, wherein ventilation holes
are provided within the wrapper and/or the plug wrap.
12. A multiple rod comprising a plurality (e.g. 2, 4, 6 etc.) of mouthpieces or filters
201 according to any preceding claim integrally joined end-to-end in a mirror image
relationship.
13. A mouthpiece or filter 201 according to any of claims 1 to 11 for use with a smoking
article comprising one or more smokable material(s) other than tobacco, for example
wherein the smokable material other than tobacco is prepared from a plant in the Cannabis
genus, for example Cannabis sativa, for example Cannabis sativa sativa, Cannabis sativa
indica or Cannabis sativa ruderalis, or a mixture thereof or, for example wherein
the smokable material other than tobacco comprises oregano and/or hemp.
14. Use of a mouthpiece or filter 201 according to any of claims 1 to 11 for filtering
the smoke of a smoking article comprising one or more smokable material(s) other than
tobacco, for example wherein the smokable material other than tobacco is prepared
from a plant in the Cannabis genus, for example Cannabis sativa, for example Cannabis
sativa sativa, Cannabis sativa indica or Cannabis sativa ruderalis, or a mixture thereof,
or, for example wherein the smokable material other than tobacco comprises oregano
and/or hemp.
15. A smoking article comprising the mouthpiece or filter 201 according to any of claims
1 to 11 joined to a wrapped rod comprising a smokable material other than tobacco,
for example wherein the smokable material other than tobacco is prepared from a plant
in the Cannabis genus, for example Cannabis sativa, for example Cannabis sativa sativa,
Cannabis sativa indica or Cannabis sativa ruderalis, or a mixture thereof, or for
example wherein the smokable material other than tobacco comprises oregano and/or
hemp.
1. Mundstück oder Filter 201, das einen sich längs erstreckenden Stab 202 aus Filtermaterial
mit entlang seiner ganzen Länge gleichmäßigem Querschnitt aufweist, wobei der sich
längs erstreckende Stab 202 drei sich längs erstreckende Kanäle 203 aufweist, die
sich entlang der ganzen Länge des Mundstücks oder Filters erstrecken, wobei die drei
Kanäle in einem dreieckigen Muster angeordnet sind.
2. Mundstück oder Filter 201 nach Anspruch 1, wobei die drei Kanäle 203 entlang der ganzen
Länge des Mundstücks oder Filters einen gleichmäßigen Querschnitt haben.
3. Mundstück oder Filter 201 nach einem der vorhergehenden Ansprüche, wobei die Kanäle
203, die sich über die ganze Länge des Mundstücks oder Filters erstrecken, spiralförmig
oder im Wesentlichen spiralförmig sind oder wobei die Kanäle 203, die sich über die
ganze Länge des Mundstücks oder Filters erstrecken, halbzylindrisch sind.
4. Mundstück oder Filter 201 nach einem der vorhergehenden Ansprüche, wobei das Filtermaterial
Celluloseacetat-Filamentkabel aufweist oder wobei das Filtermaterial ein thermoplastisches
oder anderweitig spinnbares Polymer, zum Beispiel Polypropylen, Polyethylenterephthalat
oder Polyactid, aufweist.
5. Mundstück oder Filter 201 nach einem der vorhergehenden Ansprüche, wobei das Filtermaterial
einen Weichmacher, zum Beispiel Triacetin, Triethylenglykoldiacetat (TEGDA) oder Polyethylenglykol
(PEG), aufweist.
6. Mundstück oder Filter 201 nach Anspruch 6, wobei das Filtermaterial ein Pigment und/oder
einen Aromastoff aufweist oder wobei das Filtermaterial mehrere Pigmente und/oder
mehrere Aromastoffe aufweist.
7. Mundstück oder Filter 201 nach Anspruch 6, wobei der Aromastoff in einer Aromakapsel
bereitgestellt ist.
8. Mundstück oder Filter 201 nach einem der vorhergehenden Ansprüche, wobei das Filtermaterial
Kohlenstoff aufweist, zum Beispiel Aktivkohle.
9. Mundstück oder Filter 201 nach einem der vorhergehenden Ansprüche, das ferner eine
Umhüllung oder ein Filterbelagpapier aufweist.
10. Mundstück oder Filter 201 nach Anspruch 9, wobei die Umhüllung oder das Filterbelagpapier
aus einer Pflanze der Gattung Cannabis abgeleitet ist, zum Beispiel Cannabis sativa,
zum Beispiel Cannabis sativa sativa, Cannabis sativa indica oder Cannabis sativa ruderalis
oder einem Gemisch davon.
11. Mundstück oder Filter 201 nach Anspruch 9 oder Anspruch 10, wobei in der Umhüllung
und/oder dem Filterbelag Lüftungslöcher bereitgestellt sind.
12. Mehrfachstab, der mehrere (z.B. 2, 4, 6 usw.) Mundstücke oder Filter 201 nach einem
der vorhergehenden Ansprüche aufweist, die Ende an Ende in einer spiegelbildlichen
Beziehung einstückig aneinandergefügt sind.
13. Mundstück oder Filter 201 nach einem der Ansprüche 1 bis 11 zur Verwendung mit einem
Raucherartikel, der ein oder mehr rauchbare(s) Material(ien) außer Tabak aufweist,
zum Beispiel wobei das rauchbare Material außer Tabak aus einer Pflanze der Gattung
Cannabis, zum Beispiel Cannabis sativa, zum Beispiel Cannabis sativa sativa, Cannabis
sativa indica oder Cannabis sativa ruderalis oder einem Gemisch davon, hergestellt
ist, zum Beispiel wobei das rauchbare Material außer Tabak Oregano und/oder Hanf aufweist.
14. Verwendung eines Mundstücks oder Filters 201 nach einem der Ansprüche 1 bis 11 zum
Filtern des Rauchs eines Raucherartikels, der ein oder mehr rauchbare(s) Material(ien)
außer Tabak aufweist, zum Beispiel wobei das rauchbare Material außer Tabak aus einer
Pflanze der Gattung Cannabis, zum Beispiel Cannabis sativa, zum Beispiel Cannabis
sativa sativa, Cannabis sativa indica oder Cannabis sativa ruderalis oder einem Gemisch
davon, hergestellt ist, zum Beispiel wobei das rauchbare Material außer Tabak Oregano
und/oder Hanf aufweist.
15. Raucherartikel, der das Mundstück oder Filter 201 nach einem der Ansprüche 1 bis 11
aufweist, das an einen umhüllten Stab angefügt ist, der ein rauchbares Material außer
Tabak aufweist, zum Beispiel wobei das rauchbare Material außer Tabak aus einer Pflanze
der Gattung Cannabis, zum Beispiel Cannabis sativa, zum Beispiel Cannabis sativa sativa,
Cannabis sativa indica oder Cannabis sativa ruderalis oder einem Gemisch davon, hergestellt
ist, zum Beispiel wobei das rauchbare Material außer Tabak Oregano und/oder Hanf aufweist.
1. Embouchure ou filtre 201 comprenant un bâtonnet 202 s'étendant longitudinalement de
matière filtrante de coupe transversale uniforme le long de toute sa longueur, le
bâtonnet 202 s'étendant longitudinalement comprenant trois canaux 203 s'étendant longitudinalement
qui s'étendent le long de toute la longueur de l'embouchure ou filtre, dans laquelle
les trois canaux sont arrangés en un modèle triangulaire.
2. Embouchure ou filtre 201 selon la revendication 1, dans laquelle les trois canaux
203 ont une coupe transversale uniforme le long de toute la longueur de l'embouchure
ou filtre.
3. Embouchure ou filtre 201 selon l'une quelconque des revendications précédentes, dans
laquelle les canaux 203 qui s'étendent sur toute la longueur de l'embouchure ou filtre
sont hélicoïdaux ou sensiblement hélicoïdaux, ou bien dans laquelle les canaux 203
qui s'étendent sur toute la longueur de l'embouchure ou filtre sont semi-cylindriques.
4. Embouchure ou filtre 201 selon l'une quelconque des revendications précédentes, dans
laquelle la matière filtrante comprend de l'étoupe filamenteuse d'acétate de cellulose,
ou bien dans laquelle la matière filtrante comprend un polymère thermoplastique ou
autrement filable, par exemple du polypropylène, du téréphtalate de polyéthylène ou
du polyactide.
5. Embouchure ou filtre 201 selon l'une quelconque des revendications précédentes, dans
laquelle la matière filtrante comprend un plastifiant, par exemple de la triacétine,
du diacétate de triéthylène glycol (TEGDA) ou du polyéthylène glycol (PEG).
6. Embouchure ou filtre 201 selon la revendication 1, dans laquelle la matière filtrante
comprend un pigment et/ou un aromatisant, ou bien dans laquelle la matière filtrante
comprend de multiples pigments et/ou de multiples aromatisants.
7. Embouchure ou filtre 201 selon la revendication 6, dans laquelle l'aromatisant est
fourni dans une capsule d'arôme.
8. Embouchure ou filtre 201 selon l'une quelconque des revendications précédentes, dans
laquelle la matière filtrante comprend du charbon, par exemple du charbon actif.
9. Embouchure ou filtre 201 selon l'une quelconque des revendications précédentes, comprenant
en outre une enveloppe ou un papier manchette.
10. Embouchure ou filtre 201 selon la revendication 9, dans laquelle l'enveloppe ou le
papier manchette est dérivé d'une plante de l'espèce Cannabis, par exemple Cannabis sativa, par exemple Cannabis sativa sativa, Cannabis sativa indica ou Cannabis sativa ruderalis, ou un mélange de celles-ci.
11. Embouchure ou filtre 201 selon la revendication 9 ou la revendication 10, dans laquelle
des trous de ventilation sont fournis dans l'enveloppe et/ou le papier manchette.
12. Bâtonnet multiple comprenant une pluralité (par ex. 2, 4, 6 etc.) d'embouchures ou
filtres 201 selon l'une quelconque des revendications précédentes intégralement joints
bout à bout selon une relation d'image symétrique.
13. Embouchure ou filtre 201 selon l'une quelconque des revendications 1 à 11 pour une
utilisation avec un article à fumer comprenant une ou plusieurs matières fumables
autres que du tabac, par exemple où la matière fumable autre que du tabac est préparée
à partir d'une plante de l'espèce Cannabis, par exemple Cannabis sativa, par exemple Cannabis sativa sativa, Cannabis sativa indica ou Cannabis sativa ruderalis, ou un mélange de celles-ci ou bien, par exemple, où la matière fumable autre que
du tabac comprend de la marjolaine et/ou du chanvre.
14. Utilisation d'une embouchure ou filtre (201) selon l'une quelconque des revendications
1 à 11 pour filtrer la fumée d'un article à fumer comprenant une ou plusieurs matières
fumables autres que du tabac, par exemple où la matière fumable autre que du tabac
est préparée à partir d'une plante de l'espèce Cannabis, par exemple Cannabis sativa, par exemple Cannabis sativa sativa, Cannabis sativa indica ou Cannabis sativa ruderalis, ou un mélange de celles-ci ou bien, par exemple, où la matière fumable autre que
du tabac comprend de la marjolaine et/ou du chanvre.
15. Article à fumer comprenant l'embouchure ou le filtre 201 selon l'une quelconque des
revendications 1 à 11, joint à un boudin enveloppé comprenant une matière fumable
autre que du tabac, par exemple où la matière fumable autre que du tabac est préparée
à partir d'une plante de l'espèce Cannabis, par exemple Cannabis sativa, par exemple Cannabis sativa sativa, Cannabis sativa indica ou Cannabis sativa ruderalis, ou un mélange de celles-ci ou bien, par exemple, où la matière fumable autre que
du tabac comprend de la marjolaine et/ou du chanvre.