WO2008152469A2 - Sachet pour tabac ou substitut de tabac - Google Patents

Sachet pour tabac ou substitut de tabac Download PDF

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Publication number
WO2008152469A2
WO2008152469A2 PCT/IB2008/001476 IB2008001476W WO2008152469A2 WO 2008152469 A2 WO2008152469 A2 WO 2008152469A2 IB 2008001476 W IB2008001476 W IB 2008001476W WO 2008152469 A2 WO2008152469 A2 WO 2008152469A2
Authority
WO
WIPO (PCT)
Prior art keywords
pouch
tobacco
set forth
disposal
degradation
Prior art date
Application number
PCT/IB2008/001476
Other languages
English (en)
Other versions
WO2008152469A3 (fr
Inventor
Thomas ENGSTRÖM
Torbjörn MATHISEN
Original Assignee
Radi Medical Biodegradable Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Radi Medical Biodegradable Ab filed Critical Radi Medical Biodegradable Ab
Priority to SE1050012A priority Critical patent/SE1050012L/sv
Publication of WO2008152469A2 publication Critical patent/WO2008152469A2/fr
Publication of WO2008152469A3 publication Critical patent/WO2008152469A3/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff

Definitions

  • the invention relates generally to smokeless tobacco products, and in particular to a degradable polymer container for smokeless tobacco.
  • Smokeless tobacco in the form of so-called snuff i.e. tobacco adapted for oral administration
  • snuff i.e. tobacco adapted for oral administration
  • smokeless tobacco products pose a lesser threat to a user's health than, for example, smoking, and can therefore be regarded as an acceptable substitute for smoking.
  • a popular way of administrating snuff is to contain the snuff in a permeable pouch.
  • a pouch holds the tobacco in place, while at the same time letting the flavours and substances of the tobacco pass through the walls of the pouch and into the user's mouth, to thereby be absorbed by the mucous membranes.
  • the user removes the tobacco pouch from his or her mouth and disposes the now moisture-logged pouch.
  • the used tobacco pouches Due to lack of suitable public bins, or due to the users' indifference and indolence, the used tobacco pouches frequently end up in public places, such as streets, at golf courses and other sports grounds, at entrances to public buildings and shops, and so forth. Being small and relatively flat objects, the tobacco pouches can not easily be picked up and disposed.
  • WO 97/13419 In the international patent application WO 97/13419 it is mentioned that a degradable sheath could be used to contain smokeless tobacco, but the material of the degradable sheath is only briefly discussed. Furthermore, WO 97/13419 is silent about the tactile feeling that different material compositions evoke in a user's mouth. An appealing tactile sensation is a prerequisite for gaining the consumers' acceptance of smokeless tobacco products.
  • Embodiments of the invention are directed to a pouch containing smokeless tobacco and being adapted for oral administration. After removal from the user's mouth, the pouch will degrade when exposed to the physical, chemical and biological conditions that prevail in different environments around human beings.
  • One embodiment of the present invention includes a pouch that is made from a material which degrades when exposed to humidity over an extended period of time.
  • the degradation of a pouch is mainly caused by microorganisms
  • a pouch according to a third embodiment is made from a material that degrades when exposed to sunlight.
  • a still further embodiment degrades due to the influence of oxygen, i.e. the pouch material degrades via oxidation.
  • the invention is directed to a pouch or container adapted to contain tobacco or a tobacco substitute.
  • the pouch is intended for oral administration and is designed to degrade in a natural environment after removal from the mouth of a user and subsequent disposal.
  • the pouch completely surrounds (or encloses) the tobacco with a material which is not dissolvable in a user's mouth.
  • the pouch and tobacco therein can be stored in an airtight container (eg, a bag or plastic container) to prevent the pouch from being exposed to the oxygen and humidity of ambient air.
  • the pouch is made from a degradable material, the degradation of which is mainly induced by water, e.g. in the form of humidity and/or rainwater.
  • a degradable material the degradation of which is mainly induced by water, e.g. in the form of humidity and/or rainwater.
  • such pouch material will start to degrade as soon as it comes into contact with the tobacco contained in the pouch as tobacco contains a certain amount of moisture. The degradation process will then proceed during the entire time of storage before the corresponding smokeless tobacco product is used by a consumer.
  • a degradable pouch for a smokeless tobacco product must be made from a material that withstands the degradation induced by the moisture of the tobacco product itself during the whole storage period, at least to such an extent that any change in the mechanical properties of the pouch material does not compromise the quality of the tobacco product.
  • a pouch for a smokeless tobacco product must therefore be tailored for the specific tobacco product, including the intended shelf life, of which the pouch is a part. This is in particular true when the pouch is made from one or several degradable polymers, because any change in mechanical properties of the pouch, such as strength or stiffness, is not to be regarded as a general feature among the polymers, and will be different from material to material even if their relative degradation is the same. Consequently, specific knowledge of the general degradation characteristics of the polymer(s) is required to design a pouch material that will withstand the maximal allowed storage time for any specific smokeless tobacco product.
  • the time period during which a consumer actually enjoys the smokeless tobacco product is relatively short, approximately 10 to 30 minutes, in particular in comparison with the intended shelf life, which can range from 3 to 12 months; and normally this relatively short time period during which the tobacco product is in the user's mouth does not come into consideration when selecting a suitable pouch material.
  • Degradable pouch materials whose degradation predominantly is induced by humidity - or more precisely by the water that is abundant in humid air - are typically polymers characterized by having hydrolysable bonds in the backbone of the polymer chain.
  • hydrolysable bonds are those found in the polymer groups comprising polyanhydrides, polyesters, polycarbonates, polyorthoesters, polyphosphazenes, polyesterurethane, polycarbonateurethane, and polyaminoacids. More specifically, polyesters or polycarbonates made through ring-opening polymerization of the monomers generally known as lactones are of particular applicability.
  • lactones may be un-substituted or substituted, and some non-limiting examples of lactones that can be used are propiolactone, pivalolactone, ⁇ -butyrolactone, ⁇ -valerolactone, glycolide, L-lactide, D-lactide, mesolactide, paradioxanone, trimethylene carbonate, ⁇ -caprolactone, and 1 ,5-dioxepan-2-one. Also the dimeric lactones from ⁇ - caprolactone and 1 ,5-dioxepan-2-one are readily polymerized into polymers with high molecular weight.
  • lactone monomers can furthermore be mixed with each other during the polymerization step to create block or random copolymers with a wide spectrum of properties.
  • the various homopolymers and copolymers from the aforementioned monomers can furthermore be blended with each other or with any polymer of the aforementioned polymer groups in a variety of different proportions to further fine-tune some of the desirable properties.
  • One such property of particular importance is the degradation time, but also other properties, like strength and softness, should be considered.
  • polyesters as degradable materials for a pouch according to the present invention are those generally known as condensation polymers. This group contains polyesters made from diacids and diols, and several of these polyesters are able to form fibres which will degrade in nature. Examples of various diacids are, but not limited to, succinic, glutaric, adipic, pimelic, suberic, azelaic and sebacic acid.
  • These acids can be polymerized in the presence of a variety of diols, such as ethyleneglycol, 1,2-propyleneglycol, 1 ,3-proanediol, 1 ,4-butandiol, pentamethylenglycol, 1 ,6-hexanediol, 1 ,4-cyclohexanedimethanol, or 1,4- cyclohexandiol, to form suitable material for a pouch according to the present invention.
  • diols such as ethyleneglycol, 1,2-propyleneglycol, 1 ,3-proanediol, 1 ,4-butandiol, pentamethylenglycol, 1 ,6-hexanediol, 1 ,4-cyclohexanedimethanol, or 1,4- cyclohexandiol
  • the pouch is made from a degradable material having slow or very slow degradation kinetics when exposed to humidity only, but with accelerated degradation kinetics when also exposed to microorganisms which are abundant in nature. In comparison with materials that mainly degrade due to humidity, such materials have an enhanced ability to preserve the mechanical integrity of a corresponding pouch over an extended time of storage.
  • a degradable material having slow or very slow degradation kinetics when exposed to humidity only, but with accelerated degradation kinetics when also exposed to microorganisms which are abundant in nature.
  • such materials have an enhanced ability to preserve the mechanical integrity of a corresponding pouch over an extended time of storage.
  • Several microorganisms and especially several families of bacteria residing in soil will readily degrade synthetic polymer, and particularly polyesters. When active microorganisms are taking part in the degradation process, the degradation will proceed by oxidation and also enzymatic cleavage and not only by pure hydrolysis. This will further enhance the ongoing degradation process.
  • the degradation processes of natural polymers like polysacchari
  • polyhydroxybutyrate and its various copolymers are, for example, utilized by certain bacteria abundant in soil to store energy, and it can therefore be expected that a pouch comprising polyhydroxybutyrate will be quickly consumed by such bacteria.
  • Some polysaccarides are available in nature and can in many cases easily be formed into fibres.
  • Non-limiting examples of such natural polysaccarides are starch and chitosan.
  • Starch is found in a variety of different crops and among the larger sources are corn and potatoes.
  • Chitosan is the second most abundant biopolymer on earth and is most readily available from shrimp and crab shell. Both starch and chitosan are easily degraded in nature by various microorganisms.
  • Oxidative degradation by chitosan is very fast and especially so in the presence of metal ions like iron, which is naturally present in the environment.
  • proteins which can be used to make the pouch according to the invention and which degrade due to influence of microorganisms are fibrin, collagen and zein.
  • Natural materials or the product made thereof, including but not limited to fibers, fiber mat or pouch, may further be stabilized by crosslinking with diepoxides, dialdehydes or polycarbocylic acids or coated to manipulate degradation and mechanical properties of the end product. Coating(s) allow for a relatively fast disintegration of the pouch into single or smaller aggregates of fibers.
  • additives incorporate pre-oxidized polymers, trace metals or metal chelates that will speed up the oxidation reactions when the material is exposed to sunlight.
  • a number of additives exist on the market, which will speed up degradation of common plastic material, such as TDPATM from EPI Environmental Products Inc. and EnvirocareTM from CIBA.
  • Copolymerization of ordinary vinyl monomers, ethylene, and polypropylene together with carbon monoxide and thus introducing a keto group in the main polymer chain which is readily further oxidized has also been used to speed up degradation of polymers in nature.
  • the most well known photo degradable resins made from carbon monoxide is known as Ecolyte, which has been used to modify other materials to be fully degradable when exposed to unshielded sunlight and humidity.
  • Another polymer which readily forms fibers and thin foils, is polyvinylalcohol or its various copolymers.
  • the biodegradation of this polymer is well known and proceeds through oxidation and subsequent chain cleavage into smaller polymer chains.
  • the oxidation process is most readily performed by sunlight and soil bacteria, and results in low molecular fragments that are water soluble and thus more susceptible to oxidation and hydrolysis, which leads to full degradation of the polymer.
  • the above materials are non-limiting examples of degradable polymers that can be used alone or in blends with each other to result in the most preferred degradation profile of the pouch.
  • Various additives such as oxidizers, sencitizers, and plasticizers can be employed to alter the degradation characteristics of the material.
  • Plasticizers such as but not limited to various substituted or non substituted citric acid esters, such as triethyl-citrate or acetyl triethyl-citrate, and glycerol esters, such as triacetin, can be used to modify the softness of the material to minimize the feel of the pouch once in the mouth.
  • the examples of materials and additives that can be used for the pouch are not limiting examples to achieve the most preferred degradation profile. While the storage periods may be different and also the amount of moisture present, in different tobacco blends, the storage time may affect the different materials differently and consequently the material selection for a suitable pouch material must be determined with these factors in mind, e.g. a pouch made from a relatively dry tobacco product with a short storage time can preferably be made from a material composition having a faster degradation kinetic than a pouch that will house a moist tobacco product. For those materials where the primary degradation arises from simple hydrolysis, the moisture content in the tobacco will be of primary importance for selecting the suitable material.
  • the storage period is typically 3 to 12 months and degradation during this time period should not lead to any such change in mechanical properties such as strength or pliability that will compromise the end use of the pouch or how the customer perceives the pouch.
  • the pouch After disposal of the pouch, the pouch should be disintegrated, e.g. fragmented into smaller pieces, or fully degraded within a time period of 3 years, but more preferably within 2 years and more preferably within a time period of 1 year or less.
  • Polymers of particular interest are those that degrade by means of sunlight and oxidation together with those that degrade by hydrolysis and/or in combination with micro organisms.
  • polymers that can be used to meet the various selection criteria set forth above, the polylactide, polyhydroxybutyric acid, polycaprolactone family of polymers can be used.
  • the above-mentioned polymers are only slowly degraded in a humid environment, a feature that can be manipulated, either accelerated or retarded, by copolymerisation or blending with synthetic or natural polymers.
  • Poly-1-lactide has a degradation time of about 4 to 6 years as a pure homopolymer.
  • the degradation time for pure polyglycolide is too short for the polymer to be of interest as the main component in the pouch material, but if glycolide is used as a co-monomer in the polylactide polymerisation, the glycolide will be found as short but more easily degradable sequences within the lactide-glycolide copolymer and thus lead to a faster disintegration and degradation of the pouch material.
  • Non-limiting examples of other monomers that can be used instead of glycolide to manipulate the degradation kinetic of polylactide and polycaprolactone is paradioxanone, 1 ,5-dioxepan-2-one and trimethylene carbonate.
  • Various additives like natural polymers like carbohydrates and proteins may further be used to manipulate the degradation characteristics.
  • the pouch itself can be made from a fibre mat.
  • Several techniques can be employed to make the fibres used for production of the pouch material such as melt spinning and dry or wet spinning.
  • Typical fibre diameters especially useful in this application are found in the range of 0.5 to 50 microns, preferably in the range of 2 to 30 microns, and more preferably in the range of 8 to 24 microns. It must be understood that a more stiff material may require a smaller diameter than a more soft material to obtain a pouch that does not feel hard or stiff once in the mouth.
  • the fibres can later be converted into non-woven fibre mats by well-known techniques.
  • Other techniques that may be used for production of the inventive pouch material are fibre blowing or electro-spinning.
  • a fibre mat is produced at the same time the fibre is formed, and may for some materials be a more convenient method to produce the pouch material.
  • the thickness of the pouch material is typically in the range of 25 to 300 microns, but more preferably in the range of 75 to 150 microns.
  • fibre forming processes may be a convenient method to make the inventive pouch material, other techniques may be used.
  • One such method is to make the pouch from a thin, perforated polymer foil. These thin foils can be made very flexible.
  • One convenient way to perforate the thin foil is to use electrical discharge across the foil area or any type of laser equipment such as carbon dioxide or excimer lasers. Foils are most conveniently extruded, and during this process several layers can be combined to achieve the right feel of the pouch material.
  • Additives can also be used in one or all of the layers.
  • Such additives could be any type of pharmacological substance, nicotine, nicotine extract, any type of oral health substance such as sodium fluoride, chlorhexidin or teeth whitening substances to mention a few.
  • the pouch material e.g. in the form of a fibre mat or a film, can be formed into a pouch by well-known techniques such as folding and subsequent welding, sewing or gluing, etc. Some polymers or fibers thereof, especially such fibers made from natural polymers may be difficult or impossible to weld by conventional methods commonly used in the plastic industry.
  • Such fibers or foils may be coated with a thin layer of a polymer which readily fuses when exposed to heat as generated from commonly employed induction welders, laser welders or the like. Such coating may also contain active pharmacological substances as mentioned above.
  • the coating, which can be added to the individual fiber or to the pouch material before welding is preferably made from a more readily degradable polymer than the fiber to allow an early disintegration of the pouch into single fibers of such dimensions that will not be spotted by the human eye. The fibers may then degrade at its own pace without posing a littering problem.
  • the pore size of the pouch needs to be adjusted to the tobacco product so that a minimum of solid particles escape the pouch but should allow for a free exchange of water soluble substances. If very small pores are used and the material in the pouch is relatively hydrophobic, free water flow may be hindered and larger pores may be needed. The same but opposite is true when a more hydrophilic material is used to manufacture the pouch.
  • the porosity or transparency i.e. the area not occupied by any type of material is in the range of 5 to 40 %, but preferably found in the range of 10 to 30 %, or more preferably in the range of 15 to 25 %.
  • the shape of the pores is not important for the proper function of the inventive pouch and may take any type of shape.
  • the area of any type of pore can easily be defined and the pore size can then be specified as the diameter of a circle with equivalent area.
  • the so defined equivalent pore diameter should be a maximum of 500 microns and preferably less than 300 microns.
  • at least 50 % of the porosity in the pouch is made up by pores having an equivalent diameter of 100 microns or less.

Landscapes

  • Bag Frames (AREA)
  • Wrappers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention concerne un produit de tabac sans fumée adapté pour une administration orale, qui comprend un sachet perméable adapté pour une administration dans la bouche d'un utilisateur et adapté pour être retiré de la bouche et jeté dans la nature et un tabac sans fumée contenu dans le sachet. Le sachet est fabriqué à partir d'un polymère dégradable dont les propriétés de dégradation permettent au sachet d'être essentiellement intact jusqu'au moment de la mise au rebut et permettent au sachet de se dégrader dans la nature après mise au rebut.
PCT/IB2008/001476 2007-06-11 2008-06-09 Sachet pour tabac ou substitut de tabac WO2008152469A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE1050012A SE1050012L (sv) 2007-06-11 2008-06-09 Påse för tobak eller tobakssubstitut

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/761,084 2007-06-11
US11/761,084 US20080302682A1 (en) 2007-06-11 2007-06-11 Pouch for tobacco or tobacco substitute

Publications (2)

Publication Number Publication Date
WO2008152469A2 true WO2008152469A2 (fr) 2008-12-18
WO2008152469A3 WO2008152469A3 (fr) 2009-02-05

Family

ID=39967535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/001476 WO2008152469A2 (fr) 2007-06-11 2008-06-09 Sachet pour tabac ou substitut de tabac

Country Status (3)

Country Link
US (1) US20080302682A1 (fr)
SE (1) SE1050012L (fr)
WO (1) WO2008152469A2 (fr)

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CN103458715A (zh) * 2010-08-05 2013-12-18 奥驰亚客户服务公司 具有卷有结构纤维的烟草的织物
EP2692254B1 (fr) * 2012-07-30 2019-03-06 British American Tobacco (Investments) Limited Voile servant à du tabac sans fumée
WO2020244722A1 (fr) 2019-06-07 2020-12-10 Ncp Nextgen A/S Composition de sachet de nicotine
EP3784064B1 (fr) 2019-03-18 2021-06-02 Swedish Match North Europe AB Matériau d'emballage et produit à base de nicotine en sachet destiné à être administré par voie orale

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US10051884B2 (en) 2010-03-26 2018-08-21 Philip Morris Usa Inc. Controlled release mentholated tobacco beads
RU2592099C2 (ru) 2010-04-12 2016-07-20 Алтриа Клайент Сервисез Ллс Пакетированный продукт с улучшенным запечатыванием и способ
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US8893725B2 (en) 2011-01-28 2014-11-25 R. J. Reynolds Tobacco Company Polymeric materials derived from tobacco
WO2014152945A1 (fr) 2013-03-14 2014-09-25 Altria Client Services Inc. Produit de tabac sans fumée enveloppé de fibre
CA2907187C (fr) 2013-03-15 2022-05-31 Altria Client Services Llc Procedes et machines pour ensacher du tabac sans fumee et des produits de substitut de tabac
EP3046633A4 (fr) 2013-09-19 2017-03-15 Allovate, LLC Dentifrice destiné à procurer des allergènes à la muqueuse buccale
EP3116330B1 (fr) 2014-03-14 2021-08-11 Altria Client Services LLC Produits de tabac sans fumée gainés de polymères
EP3116331B1 (fr) 2014-03-14 2019-05-22 Altria Client Services LLC Procédé et appareil d'enrobage de partie de produit
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EP3192380B1 (fr) 2016-01-12 2020-11-11 Swedish Match North Europe AB Produit en sachet oral
DK180339B1 (en) 2019-06-07 2020-12-18 Ncp Nextgen As Nicotine pouch composition and pouch comprising such
WO2021116919A1 (fr) * 2019-12-09 2021-06-17 Nicoventures Trading Limited Non-tissé pour produit oral avec composant libérable
WO2021226542A1 (fr) * 2020-05-07 2021-11-11 Trinidad Consulting, Llc Poches
DE202020105820U1 (de) 2020-07-30 2020-10-26 Tenowo GmbH Feuchtedurchlässiges, mikroporöses Genussmittel-Verpackungsmaterial aus Vliesstoff
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WO2007037962A1 (fr) * 2005-09-22 2007-04-05 R.J. Reynolds Tobacco Company Composition de tabac qui ne se fume pas

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CN103458715A (zh) * 2010-08-05 2013-12-18 奥驰亚客户服务公司 具有卷有结构纤维的烟草的织物
EP2692254B1 (fr) * 2012-07-30 2019-03-06 British American Tobacco (Investments) Limited Voile servant à du tabac sans fumée
EP3784064B1 (fr) 2019-03-18 2021-06-02 Swedish Match North Europe AB Matériau d'emballage et produit à base de nicotine en sachet destiné à être administré par voie orale
WO2020244721A1 (fr) 2019-06-07 2020-12-10 Ncp Nextgen A/S Composition de sachet de nicotine et sachet comprenant une telle composition
WO2020244723A1 (fr) 2019-06-07 2020-12-10 Ncp Nextgen A/S Produit en sachet destiné à être administré par voie orale
WO2020244724A1 (fr) 2019-06-07 2020-12-10 Ncp Nextgen A/S Produit en sachet avec composition d'arôme liquide
WO2020244725A1 (fr) 2019-06-07 2020-12-10 Ncp Nextgen A/S Produit à base de nicotine en sachet
WO2020244722A1 (fr) 2019-06-07 2020-12-10 Ncp Nextgen A/S Composition de sachet de nicotine
EP3988087A1 (fr) 2019-06-07 2022-04-27 NCP NextGen A/S Produit en sachet oral
EP4079290A1 (fr) 2019-06-07 2022-10-26 Philip Morris Products S.A. Composition de poche à nicotine et poche la comprenant
EP4108105A1 (fr) 2019-06-07 2022-12-28 Philip Morris Products S.A. Produit de poche de nicotine
EP4279072A2 (fr) 2019-06-07 2023-11-22 Philip Morris Products S.A. Produit en sachet avec composition aromatique liquide
US11930838B2 (en) 2019-06-07 2024-03-19 Philip Morris Products S.A. Pouched product with liquid flavor composition

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US20080302682A1 (en) 2008-12-11
SE1050012L (sv) 2010-01-11

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