EP2720567B1 - Tabakverpackung mit einer gesteuerten internen umgebung - Google Patents

Tabakverpackung mit einer gesteuerten internen umgebung Download PDF

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Publication number
EP2720567B1
EP2720567B1 EP12717079.3A EP12717079A EP2720567B1 EP 2720567 B1 EP2720567 B1 EP 2720567B1 EP 12717079 A EP12717079 A EP 12717079A EP 2720567 B1 EP2720567 B1 EP 2720567B1
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EP
European Patent Office
Prior art keywords
oxygen
packaging system
rate
package
tobacco
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP12717079.3A
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English (en)
French (fr)
Other versions
EP2720567A1 (de
Inventor
Mary MCFARLANE
Rory PARSONS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JT International SA
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JT International SA
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Filing date
Publication date
Application filed by JT International SA filed Critical JT International SA
Priority to EP12717079.3A priority Critical patent/EP2720567B1/de
Priority to NO12717079A priority patent/NO2720567T3/no
Publication of EP2720567A1 publication Critical patent/EP2720567A1/de
Application granted granted Critical
Publication of EP2720567B1 publication Critical patent/EP2720567B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F23/00—Cases for tobacco, snuff, or chewing tobacco

Definitions

  • the present invention relates to a package containing a tobacco product or tobacco material having a controlled internal environment which prevents deterioration of the packaged product.
  • Snus is a heat-treated moist powder tobacco product that is typically consumed by placing it under the upper lip for extended periods of time.
  • Loose snus is a moist powder which can be portioned and shaped prior to insertion into the mouth. Portion snus is pre-packaged in small sachets of porous non-woven material.
  • the freshness of the snus product which can be considered to mean 'having the properties of the newly made product', is determined by seven key parameters: flavour character (i.e. taste and aroma); flavour impact or strength; flavour balance (i.e. the subtle character); pH level; moisture level; nicotine level and appearance.
  • Tobacco products and tobacco materials such as snus absorb oxygen and emit carbon dioxide.
  • the complete mechanisms of this gas exchange are not fully understood, but are thought to include chemical reactions such as oxidation of, for example, unsaturated fatty acids naturally occurring in tobacco.
  • the almost universally adopted retail packaging format for snus is a moulded, shallow, drum-shaped, lidded container, often made from plastics such as polypropylene.
  • Other packaging formats include the use of metal or waxed cardboard or a combination such as metal lid and cardboard can.
  • the majority of these containers are readily gas permeable, and allow unhindered gas exchange between the internal environment of the package and the external environment.
  • a consequence of the low barrier properties of the packaging which allow unhindered gas exchange to the external environment is the loss and deterioration in moisture content, flavour and pH, reducing the perceived quality of the product and thereby limiting the shelf-life of the packaged product.
  • Figure 1 depicts the theoretical changes which occur in the snus product packaged according to the current packaging system.
  • Gaseous movement can be prevented by the use of an airtight sealed pack, resulting in the snus product being packaged in a sealed environment. Whilst this approach prevents volatile loss and can therefore preserve desired product moisture and flavour, this approach is problematic because once the sealed product has consumed all available oxygen and the internal pack environment becomes oxygen-free there is a rapid deterioration in sensory quality of the snus product. In particular, the snus product produces an offensive odour when no oxygen is present (termed "zero-oxygen off"). Furthermore, the internal gas balance within the pack is disrupted when the level of carbon dioxide, which is produced by the snus product and trapped within the sealed packaging, increases significantly beyond normal atmospheric concentrations.
  • Figure 2 represents the theoretical changes that occur in snus packaged in absolute barrier modified atmosphere packaging (MAP) (i.e. oxygen-limited).
  • MAP absolute barrier modified atmosphere packaging
  • snus has been packaged in sealed packs with high oxygen content.
  • smokeless tobacco products such as snus
  • outer packaging materials that are virtually impervious to oxygen and/or moisture
  • those packaging materials can be vacuum sealed or sealed such that the atmosphere there within is fixed at the time of packaging but not actively controlled thereafter.
  • the controlled gaseous environment in the package may comprise oxygen in an amount greater than about 25%, to a maximum of about 80%.
  • Figure 4 depicts the ideal situation wherein the flavour, moisture content and pH of the snus product are maintained at consistent levels over time, thereby increasing the perceived quality and freshness of the product, and extending the shelf-life.
  • the first aspect of the present invention provides a packaging system according to claim 1 comprising a sealed or re-sealable package containing a tobacco product, wherein the internal environment within the package is actively controlled to maintain a pre-determined gaseous composition.
  • the oxygen level is preferably maintained above zero percent and below atmospheric oxygen levels, in order to slow undesirable changes to the product resulting from oxidative processes.
  • the sealed or re-sealable package prevents unwanted loss of moisture content and flavour of the tobacco product, whilst maintaining the oxygen concentration in the package above zero prevents the rapid deterioration in the sensory quality of the tobacco product associated with a zero oxygen environment, thereby extending the shelf-life of the product.
  • the second aspect of the invention relates to the use of an oxygen-releasing insert comprising sodium percarbonate but no drying agent contained within a sealed wrapper fabricated from a material or combination of materials providing oxygen and water vapour transmission capabilities in the packaging system according to the first aspect of the invention.
  • the present invention provides a packaging system comprising a sealed or re-sealable package containing a tobacco product or material that is designed to create and maintain an actively controlled internal environment having a stable pre-determined gaseous composition that is maintained within a pre-determined range.
  • a sealed pack and prevention of a zero-oxygen pack atmosphere prevents the deterioration of moisture, flavour and other sensory attributes of the tobacco product.
  • the tobacco product or tobacco material may be selected from raw tobacco, processed tobacco, cigarettes, cigars, snus, American snuff, formed tobacco-based oral products, nasal snuff, pipe tobacco, "roll your own” (RYO) tobacco, and "make your own” (MYO) tobacco.
  • the tobacco product is snus.
  • snus refers to moist powder tobacco product that is consumed by placing it under the upper lip.
  • sealed package refers to a gas-impermeable container having a hermetic closure.
  • re-sealable package refers to a gas-impermeable container wherein the seal can be restored following an opening or closure event. Sealed and re-sealable packages provide an absolute barrier enabling the moisture content and flavour of the tobacco product to be retained over time.
  • the sealed or re-sealable package may, for example, be a retail package in which the tobacco is sold to the end-user or a shipping container in which raw or processed tobacco products and/or materials are transported in bulk.
  • the oxygen level within the package is actively maintained above zero and below 21% (atmospheric oxygen).
  • atmospheric oxygen As discussed above, it is highly undesirable for the oxygen level within the package to fall to zero, however increasing the oxygen level significantly above zero is also damaging to the tobacco product, as the rate of oxidation, and associated oxidative damage to the product, increases with the percentage oxygen content.
  • the oxygen level is maintained within a range of greater than 0% to 5%, more preferably within a range of greater than 0% to 2%, and most preferably at a level of 0.1%.
  • the packaging system further comprises means, referred to herein as 'active controlling elements', for evolving oxygen into the internal environment within the package at a controlled rate in order to enable the oxygen level to be actively maintained within the ranges described above.
  • the controlling elements emit oxygen at a rate which is equal to or slightly greater than the rate at which oxygen is consumed by the tobacco product, in order to maintain pack oxygen levels greater than, but preferably close to, 0%.
  • the rate at which oxygen is emitted by the controlling element should compensate for the rate of oxygen consumption by the tobacco product.
  • the rate of consumption by the product, and hence the rate of emission by the controlling element depends primarily on the mass and moisture content of tobacco product within the package, and the storage temperature. To a lesser extent, oxygen consumption is also dependent on the tobacco type, the presence of additives and processing of the tobacco product or material.
  • the control element supplies oxygen to the internal environment within the package at a rate of 0.1-500 ⁇ l/g/day, more preferably at a rate of 1-250 ⁇ l/g/day, and most preferably at a rate of 2-105 ⁇ l/g/day.
  • Oxygen is provided to the internal environment within the packaging continuously, in order to prevent oxygen depletion, and slowly, in order to suppress the rate of oxidative changes and the resultant negative effects on pH and sensory attributes of the product.
  • the controlling element also absorbs carbon dioxide produced by the tobacco product or material from the internal environment within the package in order to actively maintain the internal volume of the package.
  • evolved carbon dioxide is absorbed by the controlling element at a rate of between 0.1-50 ⁇ l/g/day, and preferably at a rate of 2-15 ⁇ l/g/day.
  • the controlling elements can include any means capable of evolving oxygen.
  • Suitable means may be in the form of a chemical composition contained within sachets comprising a semi-permeable membrane (termed “active inserts” or “oxygen-releasing inserts”) which are placed within the sealed or re-sealable package; a chemical composition contained within layers of a multi-laminate foil pack and connected to the inside of the package by micro-perforations; a chemical composition held in a separate part of the package and connected to the inside of the package by a channel; a chemical composition held between inner and out parts of a two-component package; a chemical composition held within a label adhered to the inner surface of the package; or a chemical composition contained within the fabric of a plastic package and connected to the inside of the package by channels within the solid walls of the package.
  • the controlling means is in the form of an active insert.
  • Oxygen-producing and, optionally, carbon dioxide-absorbing inserts suitable for inclusion in food packages and tobacco packages are described in GB 2450860 and are commercially available under the brand name OxyFreshTM from EMCO Packaging Systems.
  • Preferred inserts suitable for use to achieve the internal gaseous environment within the sealed or re-sealable tobacco package as required by the present invention preferably comprise a wrapper fabricated from a material or combination of materials (i.e. a composite material) having gas and water vapour transmission capabilities.
  • the wrapper may comprise a permeable membrane or a combination of impermeable and permeable membranes.
  • the insert wrapper design enables the correct amount of moisture uptake (required to promote degradation of oxygen-releasing compounds within the insert), oxygen release to the internal environment of the package and, optionally, carbon dioxide absorption from the internal environment of the package.
  • the wrapper helps to control the stability of the oxidant by restricting moisture availability, and hence slowing the release-rate of oxygen.
  • the specific properties of the wrapper will depend to some extent on the nature of the packaged product. However, the wrapper should provide a good moisture barrier to protect the oxidant from water, but a relatively poor oxygen barrier to allow transmission of oxygen into the pack headspace.
  • a preferred wrapper is made from material having overall high oxygen transmission rates and low water vapour transmission rates. This may be achieved using a single material or a composite of two or more different materials.
  • a high oxygen transmission rate (OTR) is defined herein as 100 cm 3 /m 2 /24hr or higher, measured at atmospheric pressure of 1 atm and in accordance with the ASTM D3985 standard.
  • a low water vapour transmission rate (WVTR) is defined herein as 5.0 g/m 2 /24hr or lower, measured at atmospheric pressure of 1 atm and in accordance with the ASTM F1249 standard.
  • An example of a material that acts as a complete barrier to oxygen and water vapour is a foil, such as a polyethylene terephthalate/aluminium/ polyethylene (PET/alu/PE) trilaminate foil.
  • a foil such as a polyethylene terephthalate/aluminium/ polyethylene (PET/alu/PE) trilaminate foil.
  • Examples of materials that permit overall high rates of oxygen transmission but low rates of water vapour transmission are breathable film, oriented polypropylene/polyethylene (OPP/PE) bilaminate plastic, nylon 11, high-density polyethylene (HDPE), polystyrene (PS), polypropylene (PP), polycarbonate (PC), low-density polyethylene (LDPE) and ethylene-vinyl acetate (EVA).
  • OPP/PE oriented polypropylene/polyethylene
  • bilaminate plastic nylon 11
  • a preferred wrapper is a composite of foil and OPP/PE bilaminate plastic.
  • a preferred oxygen-releasing insert suitable for use to achieve the internal gaseous environment within the sealed or re-sealable tobacco package as required by the present invention comprises sodium carbonate peroxyhydrate (also known as sodium percarbonate) as the oxygen-releasing agent.
  • the active insert may also contain a drying agent such as Bentonite clay or a zeolite, which have a very large capacity to absorb water in the form of water vapour from the atmosphere.
  • a drying agent such as Bentonite clay or a zeolite, which have a very large capacity to absorb water in the form of water vapour from the atmosphere.
  • the present inventors have surprisingly found that the action of a drying agent is counter-productive in oxygen-releasing inserts and the best performing inserts do not contain a drying agent. This is contrary to the teachings of the prior art and can be shown experimentally. It is believed that drying agents may not be specific enough to trap only water; they may also promote removal of hydrogen peroxide from the sodium carbonate-hydrogen peroxide adduct (sodium percarbonate). Once the peroxide is free it will rapidly decompose to water and oxygen.
  • the presence of a drying agent causes an increase in the oxygen level within the package, to above desirable levels.
  • the insert included in the packaging system of the invention does not contain any drying agents.
  • sodium percarbonate is the only component within the oxygen-releasing insert.
  • a further embodiment of the present invention relates to the use of an oxygen-releasing insert that contains sodium percarbonate and does not contain a drying agent in the packaging system of the invention.
  • the sodium percarbonate oxygen-releasing agent is preferably contained within a sealed wrapper having the oxygen and water vapour transmission properties described above.
  • a sample of LD RedTM snus was obtained from stock and the standard pack quantity was packed into absolute barrier packs containing oxygen-generating inserts.
  • the actively-supported oxygen packaging sample retained more moisture and flavour than the control and, unlike the gas control, had oxygen continuously present within the package, which prevented oxygen-depletion and the product developing the very negative (zero oxygen "off") sensory profile. Furthermore, the actively-supported oxygen packaging sample had better pH and sensory stability than the control, due to the slower/lower internal pack oxygen availability than the control; this suppressed the rate of these oxidative changes.
  • the actively-supported oxygen packaging system provides a significant shelf-life improvement for snus.
  • the inserts were based on two combinations of three different wrapper materials.
  • the foil material is a PET/alu/PE trilaminate which acts as a complete barrier.
  • the OPP/PE bilaminate has an OTR of 834 cm 3 /m 2 /24h (measured according to the ASTM D3985 standard) and a WVTR of 3.5 g/m 2 /24h (measured according to the ASTM F1249 standard). Both OTR and WVTR are measured at atmospheric pressure.
  • the breathable film is also a low gas barrier/high moisture barrier material. Using a combination of the foil and the more permeable materials allows a balance of properties suitable for this application.
  • Silica gel was chosen as the drying agent and was purchased in a format of 1-3 mm particle size with a colour indicator (red indicates material is active, yellow indicates inactive). The ingredients were mixed and put into the wrapper materials which were then closed by heat-sealing.
  • Metalised trilaminate material was used to make bags approximately 15cm x 20cm in size. 24 pouches of factory-produced LD Red snus was placed into each foil bag together with one oxygen-releasing insert of each type. Several samples of each variation were made, and the bags were heat-sealed to create an airtight closure. One set of samples (Sample 4) was made containing no inserts to act as a control. All the samples were stored at 22 °C. Samples were periodically tested for gas composition using a PBI Dansensor gas analyser.
  • Oxygen analysis is shown in Figure 10 .
  • the coding reference is as shown in Table 6.
  • Test samples 3 and 4 reached 0% oxygen after approximately 7 weeks. However, the other two test samples 1 and 2, which contain sodium percarbonate as the oxygen-releasing agent but no drying agent, held the oxygen level within the target range of 0-20 % for the duration of the testing period (approximately 90 days).

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  • Packages (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Lasers (AREA)

Claims (14)

  1. Verpackungssystem, das eine versiegelte oder wieder versiegelbare Verpackung umfasst, die ein Tabakprodukt enthält, wobei die interne Umgebung innerhalb der Verpackung aktiv gesteuert wird, um eine vorbestimmte gasförmige Zusammensetzung aufrechtzuerhalten, wobei das System einen aktiven Einsatz zum Emittieren von Sauerstoff in die interne Umgebung innerhalb der Verpackung mit einer gesteuerten Rate umfasst, und wobei der aktive Einsatz Natriumpercarbonat umfasst, das innerhalb einer versiegelten Hülle enthalten ist, die aus einem Verbundmaterial gefertigt ist, welche Gas- und Wasserdampfübertragungsfähigkeiten aufweist.
  2. Verpackungssystem gemäß Anspruch 1, wobei der Sauerstoffpegel innerhalb eines Bereichs größer als 0 % bis 21 % gehalten wird.
  3. Verpackungssystem gemäß Anspruch 2, wobei der Sauerstoffpegel innerhalb eines Bereichs größer als 0 % bis 5 % gehalten wird.
  4. Verpackungssystem gemäß Anspruch 3, wobei der Sauerstoffpegel innerhalb eines Bereichs größer als 0 % bis 2 % gehalten wird.
  5. Verpackungssystem gemäß Anspruch 3, wobei der Sauerstoffpegel bei 0,1 % gehalten wird.
  6. Verpackungssystem gemäß einem der Ansprüche 1 bis 5, wobei der Einsatz kein Trocknungsmittel umfasst.
  7. Verpackungssystem gemäß einem der Ansprüche 1 bis 6, bestehend aus Natriumpercarbonat , das in der Hülle enthalten ist.
  8. Verpackungssystem gemäß einem der Ansprüche 1 bis 7, wobei die Rate, mit der Sauerstoff von dem Mittel emittiert wird, gemäß der Lagertemperatur und/oder dem erforderlichen Feuchtigkeitsgehalt des Tabakprodukts variiert.
  9. Verpackungssystem gemäß einem der Ansprüche 1 bis 8, wobei Sauerstoff aus dem Mittel mit einer Rate zwischen 0,1-500 µl/g/Tag emittiert wird.
  10. Verpackungssystem gemäß einem der Ansprüche 1 bis 9, wobei das Mittel zum Emittieren von Sauerstoff auch entstehendes Kohlendioxid mit einer gesteuerten Rate absorbiert.
  11. Verpackungssystem gemäß Anspruch 10, wobei die Rate, mit der Kohlendioxid von dem Mittel absorbiert wird wird, gemäß der Lagertemperatur und/oder dem erforderlichen Feuchtigkeitsgehalt des Tabakprodukts variiert.
  12. Verpackungssystem gemäß Anspruch 10 oder Anspruch 11, wobei Kohlendioxid von dem Mittel mit einer Rate zwischen 0,1-50 µl/g/Tag absorbiert wird.
  13. Verpackungssystem gemäß einem vorgehenden Anspruch, wobei das Tabakprodukt Mundtabak ist.
  14. Verwendung eines Sauerstoff freisetzenden Einsatzes, der Natriumpercarbonat enthält und kein Trocknungsmittel enthält, in einem Verpackungssystem gemäß einem der vorhergehenden Ansprüche.
EP12717079.3A 2011-06-15 2012-04-13 Tabakverpackung mit einer gesteuerten internen umgebung Not-in-force EP2720567B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12717079.3A EP2720567B1 (de) 2011-06-15 2012-04-13 Tabakverpackung mit einer gesteuerten internen umgebung
NO12717079A NO2720567T3 (de) 2011-06-15 2012-04-13

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11170037 2011-06-15
PCT/EP2012/056855 WO2012171676A1 (en) 2011-06-15 2012-04-13 Tobacco packaging having a controlled internal environment
EP12717079.3A EP2720567B1 (de) 2011-06-15 2012-04-13 Tabakverpackung mit einer gesteuerten internen umgebung

Publications (2)

Publication Number Publication Date
EP2720567A1 EP2720567A1 (de) 2014-04-23
EP2720567B1 true EP2720567B1 (de) 2017-11-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12717079.3A Not-in-force EP2720567B1 (de) 2011-06-15 2012-04-13 Tabakverpackung mit einer gesteuerten internen umgebung

Country Status (5)

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EP (1) EP2720567B1 (de)
JP (1) JP5795120B2 (de)
EA (1) EA026996B1 (de)
NO (1) NO2720567T3 (de)
WO (1) WO2012171676A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2522190B (en) * 2014-01-13 2017-10-04 Essentra Packaging & Security Ltd Label
GB201903083D0 (en) * 2019-03-07 2019-04-24 Nicoventures Trading Ltd Tobacco processing method
GB202011616D0 (en) * 2020-07-27 2020-09-09 Nicoventures Trading Ltd A Package

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423080A (en) * 1975-03-10 1983-12-27 Bedrosian And Associates Controlled atmosphere produce package
US4834554A (en) * 1987-11-16 1989-05-30 J. C. Brock Corp. Plastic bag with integral venting structure
JPH10157787A (ja) * 1996-11-26 1998-06-16 Rengo Co Ltd 青果物の包装体
AU764740B2 (en) * 1998-10-19 2003-08-28 Mitsubishi Australia Ltd Apparatus for controlled venting of a chamber
WO2008016520A2 (en) * 2006-08-01 2008-02-07 R.J. Reynolds Tobacco Company Smokeless tobacco
US20080029116A1 (en) * 2006-08-01 2008-02-07 John Howard Robinson Smokeless tobacco
GB2450860B (en) 2007-04-11 2010-09-15 Nigel John Brace Parker A system designed to maintain a predetermined gas composition in modified atmosphere (MA) or controlled atmosphere (CA) packed food, by activly compensating
KR20090017150A (ko) * 2007-08-14 2009-02-18 주식회사 제이씨테크놀로지스 즉석식 산소발생장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2012171676A1 (en) 2012-12-20
EA201391594A1 (ru) 2014-08-29
JP2014531193A (ja) 2014-11-27
EP2720567A1 (de) 2014-04-23
JP5795120B2 (ja) 2015-10-14
NO2720567T3 (de) 2018-04-14
EA026996B1 (ru) 2017-06-30

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