EP2160105B1 - Crenellated banded cigarette paper - Google Patents

Crenellated banded cigarette paper Download PDF

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Publication number
EP2160105B1
EP2160105B1 EP08807126A EP08807126A EP2160105B1 EP 2160105 B1 EP2160105 B1 EP 2160105B1 EP 08807126 A EP08807126 A EP 08807126A EP 08807126 A EP08807126 A EP 08807126A EP 2160105 B1 EP2160105 B1 EP 2160105B1
Authority
EP
European Patent Office
Prior art keywords
crenels
merlons
leading edge
smoking article
wrapper
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.)
Active
Application number
EP08807126A
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German (de)
English (en)
French (fr)
Other versions
EP2160105A2 (en
Inventor
Marc W. Rose
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products SA
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 Philip Morris Products SA filed Critical Philip Morris Products SA
Priority to SI200830915T priority Critical patent/SI2160105T1/sl
Priority to PL08807126T priority patent/PL2160105T3/pl
Publication of EP2160105A2 publication Critical patent/EP2160105A2/en
Application granted granted Critical
Publication of EP2160105B1 publication Critical patent/EP2160105B1/en
Priority to CY20131100347T priority patent/CY1114059T1/el
Active 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
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/10—Cigars; Cigarettes with extinguishers

Definitions

  • a wrapper for a smoking article comprising a base web having a nominal permeability; and a banded region comprising sufficient add-on material such that the wrapper has a permeability at the banded region less than the nominal permeability of the base web, wherein the banded region comprises a substantially continuous band that is about 4mm or less wide and a leading edge and a edge trailing of the banded region are crenellated and wherein merlons of the leading edge are transversely aligned with crenels of the of the trailing edge and crenels of the leading edge are transversely aligned with merlons of the trailing edge.
  • a smoking article 1 includes a tobacco rod 2.
  • the tobacco rod 2 may include a cut filler 3 of tobacco and is surrounded by wrapper paper 10.
  • One end of the smoking article may include a suitable filter 4 surrounded by suitable filter tipping paper.
  • the smoking article 1 typically may have a generally circular cross section over the length of the smoking article. Nevertheless, other cross-sectional shapes including, for example, oval, are within the scope of this description.
  • the tobacco rod 2 has a nominal length measured from the tipping paper to the free end of the tobacco rod along a longitudinal axis of smoking article. By way of example, that nominal length may the in the range of about 60mm to about 100mm.
  • the wrapper paper 10 includes a base web which typically is permeable to air. Permeability of wrapper paper is normally identified in Coresta units. A Coresta unit measures paper permeability In terms of volumetric flow rate (i.e. , cm 3 /sec) per unit area ( i.e. , cm 2 ) per unit pressure drop (i.e., cm of water).
  • the base web for conventional wrapper paper also has well-known basis weights, measured in grams per square meter, abbreviated as "gsm”. The permeability and basis weight for the base web of typical smoking article papers commonly used In the industry are set out in the table below: Permeability/Coresta units Basis Weight/gsm 24 25 33 25 46 25 60 26
  • the base web of a preferred wrapper paper has a permeability of at least about 20 Coresta units. Most preferably, the wrapping paper has a permeability greater than about 30 Coresta, such as common base webs having nominal permeabilities of about 33 and about 46 Coresta with a basis weight of about 25 gsm. For some applications, the base web may have a permeability of greater than about 60 Coresta, or greater than about 80 Coresta, of even higher permeability values.
  • width of a banded region extends in a longitudinal direction of the tobacco rod, whereas a dimension in the circumferential direction of a banded region will be expressed as “transverse” or “in cross-direction” or cross-web direction”.
  • Ignition Propensity is a standard test conducted as set forth in ASTM E 2187-04, "Standard Test Method for Measuring the Ignition Strength of Smoking articles", which is incorporated herein in its entirety by this reference thereto. Ignition propensity measures the probability that a smoking article, when placed on a substrate, will generate sufficient heat to maintain static burning of the tobacco rod. Low values for ignition propensity are desirable as such values correlate with a reduced likelihood that a smoldering smoking article will cause combustion In an underlying substrate.
  • Self-extinguishment herein is a reference to smoldering characteristics of a smoking article under free burn conditions.
  • a laboratory test is conducted at a temperature of 23°C ⁇ 3°C and relative humidity of 55% ⁇ 5%, both of which should be monitored by a recording hygrothermograph. Exhaust hood(s) remove combustion products formed during testing.
  • smoking articles to be tested are conditioned at 55% ⁇ 5% relative humidity and 23°C ⁇ 3°C for 24 hours.
  • the smoking articles are placed in glass beakers to assure free air access.
  • Self-extinguishment testing takes place within an enclosure or test box.
  • a single port smoking machine or an electric lighter is used to Ignite the smoking articles for the test.
  • an apparatus or "angle holder” holds the smoking articles to be tested by holding an end at angles of 0 (horizontal), 45°, and/or 90° (vertical). Twenty (20) smoking articles are tested at each of the 0°, 45°, and 80° positions. If more than one apparatus is used, the apparatuses are preferably positioned such that the smoking articles face away from each other to avoid cross interference.
  • an self-extinguishment value of 95% indicates that 95% of the smoking articles tested exhibited self-extinguishment under free bum conditions; while an self-extinguishment value of 20% indicates that only 20% of the smoking articles tested exhibited self-extinguishment under free bum conditions.
  • the self-extinguishment value may be referred to in terms of "self-extinguishment at 0° value”, “self-extinguishment at 45° value”, or “self-extinguishment at 90° value”, each of which refers to the value of self-extinguishment at the specified tested angle.
  • the self-extinguishment value may be referred to In terms of "self-extinguishment average value", which refers to an average of the three angular positions: namely, an average of (i) the "self-extinguishment at 0° value", (ii) the "self-extinguishment at 45° value", and (iii) the "self-extinguishment at 90° value".
  • Self-Extinction value or “self-extinguishment value” does not distinguish between self-extinguishment at 0°, self-extinguishment at 45°, self-extinguishment at 90°, or self-extinguishment average values and may refer to any one of them.
  • crenellated refers to a pattern of multiple, regularly spaced, geometrically shaped spaces removed from an otherwise continuous solid banded region.
  • a crenellated pattern or band can also be described as notched or appearing similar to a pulse wave.
  • crenels refers to openings, or valleys, in a crenellated edge, while “merions” refer to raised portions, or plateaus of a crenellated edge, between crenels.
  • leading edge refers to the edge of a banded region that is closest to an approaching coal during smoldering of a smoking article whose wrapper contains the banded region
  • trailing edge refers to the edge of a banded region that is farthest from an approaching coal during smoldering of a smoking article whose wrapper contains the banded region
  • a wrapper for a smoking article comprises a base web 10 (see FIG. 2 ), having a nominal permeability and a plurality of banded regions 12 with sufficient add-on material such that the wrapper has a permeability at the banded region less than the nominal permeability of the base web.
  • a leading edge 14 and a trailing edge 16 of each banded region 12 are crenellated.
  • the banded region 12 may have a leading edge 14 in which the crenels 20 are disposed between merlons 18.
  • the merlons 18 have a dimension In the transverse direction of the base web 10 which is substantially the same as the dimension in the transverse direction of the crenels 20.
  • the merlons 18 and associated crenels 20 may be generally rectangular. If desired, however, the merlons 18 and crenels 20 may have other geometric shapes including, without limitation, quadrilaterals, trapezoids, triangles, hexagons, and other regular or irregular geometric configurations.
  • the distance between the top of a merlon 18 and the bottom of an adjacent crenel 20 may lie in the range of about 2 mm to about 5 mm, and preferably may be about 3 mm.
  • the merlons 33 of the trailing edge 16 may have a cross-web dimension substantially the same as the cross-web dimension of the crenels 20 of the leading edge 14.
  • the distance between the top of a merlon 22 and the bottom of an adjacent crenel 24 at the trailing edge may also lie in the range of about 2mm to about 5mm, and preferably may be about 3 mm.
  • the merlons 22 and crenels 24 of the trailing edge may be generally rectangular, generally quadrilateral, generally trapezoidal, generally triangular, generally hexagonal, or other geometric configurations.
  • Adjacent banded regions 12 of the paper web 10 are spaced longitudinally from one another by a nominal spacing. That nominal spacing may lie in the range of about 10 to about 30 mm. While the depth of the crenels 20 on the leading edge of the banded region 12 and the depth of the crenels 24 on the trailing edge of the banded region 12 are shown In FIG. 2 to be the same, it is within the scope of this disclosure to make those depths different, if desired.
  • the cross-directional dimensions of the merlons 18, 22 and the crenels 20, 24 may be substantially the same as depicted in FIG. 2 .
  • an integral number of pairs of merlons 18 and crenels 20 have a cross-web dimension corresponding to the nominal circumference of a smoking article.
  • two sets of merlons 18 and crenels 20 may have cross-web dimensions of about 6.2mm so that two pairs of each have a total cross-web dimension of about 24.8 mm, which corresponds to the nominal circumference of a smoking article.
  • the crenellated pattern of the banded region 12 will substantially perfectly overlap at a longitudinal seam making the tobacco rod.
  • the proportions of the merlons 44 and the crenels 46 of the leading edge 40 are different from the arrangement of FIG. 2 .
  • the merlons 44 may have a cross-web dimension of about half the cross-web dimension of the associated crenel 46. Nevertheless, an integral number of pairs of merlons 44 and crenels 48 corresponds to the nominal circumference of smoking article, as discussed above.
  • the height of the merlons 44, or depth of the crenels 46 preferably lies in the same range of values as discussed In connection with FIG. 2 .
  • the roll of crenellated paper would be slit every 27 mm but the pattern of eight (8) merlons would repeat every 24.8 mm.
  • the spacing between the bottom of the crenels 46 on the leading edge and the bottom of the crenels 48 on the trailing edge also lies in the range of dimension discussed above in connection with FIG. 2 . Spacing between adjacent banded regions 12 in FIG. 3 also lies in the same range discussed above in connection with FIG. 2 .
  • the leading edge 14 of the banded region 12 may have substantially the same characteristics discussed above in connection with FIG. 2 .
  • the trailing edge 64 may have merlons 60 having cross-web dimensions substantially greater than the cross-web dimensions of the opposed crenels 20 of the leading edge, while the cross-web dimensions of the trailing edge crenels 62 are substantially less than the cross-web dimensions of the corresponding opposed merlons 18 of the leading edge 14. Spacing between the crenellated leading and trailing edges in FIG. 4 , and longitudinal spacing between adjacent banded regions 12 of FIG. 4 are substantially the same as described above in connection with FIG. 2 .
  • Merlons of the leading edge may have a transverse dimension In the range of about 3mm to about 7 mm.
  • merlons of the leading edge may have a transverse dimension of about 3.1 mm, about 4.2 mm, or about 6.2 mm.
  • Crenele of the leading edge may have a transverse dimension in the range of about 3 mm and about 7 mm.
  • crenels of the leading edge may have a transverse dimension of about 3.1 mm, about 4.2 mm, about 5.2 mm, or about 6.2 mm.
  • Merlons of the trailing edge may have a transverse dimension in the range of about 6mm and about 10 mm.
  • merlons of the trailing edge may have a transverse dimension of about 5.775 mm, about 6.2 mm, or about 6.775 mm.
  • Crenels of the trailing edge may have a transverse dimension in the range of about 1 mm and about 7 mm.
  • crenels of the trailing edge may have a transverse dimension of about 1 mm, about 2.1 mm, or about 6.2 mm.
  • a smoking article may comprise a tobacco rod and a wrapper as described herein.
  • the wrapper preferably has a dimension in cross-direction that takes into account a circumference of the tobacco rod and an overlapping seam.
  • dimensions in cross-direction of merlons and crenels of the crenellated banded region are determined such that on the smoking article, the leading edge of the banded region preferably comprises at least two crenels and at least two merlons.
  • the leading edge of the banded region can comprise two crenels and two merlons, three crenels and three merlons, or four crenels and four merlons.
  • the smoking article Iles on the substrate during smoldering, combustion is modulated by the crenellated leading edge; specifically, merlons of the leading edge reduce the progression of the smoldering, while crenels of the leading edge allow a limited amount of smoldering to continue during free bum conditions. Accordingly, desirable self-extinguishment and ignition propensity characteristics should be achievable.
  • the banded regions of add-on material permit a smoking article to be designed with an advantageous combination of low ignition propensity values and low self-extinguishment values.
  • the low permeability banded regions of add-on material provide areas of film-forming compound along the length of the tobacco rod which can cooperate with a substrate to extinguish the lit smoking article when it is placed on a substrate, yet these areas of film-forming compound do not cause the smoking article to self-extinguish when the smoking article is held by a smoker in a free bum condition.
  • the smoking article can exhibit a reduced ignition proclivity while retaining a desirable free-burn quality or low self-extinguishment value by applying banded regions of film-forming compound to the base web according to this description.
  • the add-on material can be applied to one or to both sides of the base web.
  • banded regions are applied to the base web of the wrapper paper.
  • An object of this description is to provide wrapper papers which, when formed into a tobacco rod, exhibit ignition propensity values no greater than 25% and self-extinguishment values no greater than 50%. Even more preferred, is an ignition propensity value for the resulting smoking article no greater than about 15%; and the most preferred ignition propensity value for the resulting smoking article is no greater than about 10%. Lower self-extinguishment values are also desired. In this connection, a more preferred self-extinguishment value is less than about 25%; while the most preferred self-extinguishment value is less than about 10%.
  • the transverse dimensions of the wrapper paper are selected based on the diameter of the finished smoking article (about 7 mm to about 10 mm) and allowing for overlapping material at a longitudinal seam of about 1 mm to about 2 mm.
  • the wrapper paper dimension in cross-direction may be about 27 mm for a smoking article having a circumference of about 25.6 mm.
  • the banded regions may be formed by applying one or more layers of an aqueous film-forming composition to the base web of the wrapper paper to reduce the permeability of the paper In those banded regions.
  • a cellulosic material may also be used to form the banded regions.
  • a film-forming composition preferably may Include water and a high concentration of an occluding agent, e.g., 20% to about 50% by weight.
  • the film-forming compound can include one or more occluding agents such as starch, alginate, cellulose or gum and may also include calcium carbonate as a filter. Where starch is the film-forming compound, a concentration of about 24% may be advantageous.
  • the film-forming composition may be applied to the base web of the wrapper paper 24 using gravure printing, digital printing, coating or spraying using a template, or any other suitable technique.
  • the film-forming compounds and methods for applying film-forming compounds described in US-A1-2007/0102017 may be chosen for applying banded regions to the base web of the wrapper paper.
  • the banded regions of add-on material can be formed by printing multiple, successive layers, e.g., two or more successive layers registered or aligned with one another.
  • the material in layers may be the same of different. For example, one layer may be starch while the next layer may be starch and calcium carbonate.
  • the ability to extinguish the smoking article may depend more on providing minimum lengthwise extent of film-forming compound, rather than a particular weight per area of film-forming compound.
  • the amount of film-forming compound used may be increased without losing a free-burn quality if a bum accelerator is applied to the paper.
  • the banded regions of add-on material reduce permeability of the wrapper paper to the range of from about 0 to about 10 Coresta.
  • a multiple stage printing apparatus as described herein typically includes a reel, first gravure printing station, second gravure printing station, third gravure printing station, collection reel, rollers, impression cylinder, backing roller, nips, reservoir, pump, heat exchanger, applicator, bath, collector, drain, doctor blade, adjustment cylinders, and idler roller.
  • the banded regions, or stripes can be applied to a base web using the same cellulosic material that forms the base web.
  • the banded regions may comprise a slurry of highly refined fibrous cellulose (e.g., fibers, fibrils, microfibrils, or combinations thereof) or other add-on material applied using various spray or coating techniques, including application techniques that utilize a moving orifice applicator at the forming section of a paper-making machine as described in US-A-5 997 691 and US-A-6 596 125 .

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)
  • Manufacture Of Tobacco Products (AREA)
EP08807126A 2007-06-01 2008-05-29 Crenellated banded cigarette paper Active EP2160105B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI200830915T SI2160105T1 (sl) 2007-06-01 2008-05-29 Cigaretni papir z nazobčanim trakom
PL08807126T PL2160105T3 (pl) 2007-06-01 2008-05-29 Ząbkowany pasemkowy papier papierosowy
CY20131100347T CY1114059T1 (el) 2007-06-01 2013-04-26 Οδοντωτο ταινιωτο φυλλο σιγαρετου

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92482507P 2007-06-01 2007-06-01
PCT/IB2008/002463 WO2008146170A2 (en) 2007-06-01 2008-05-29 Crenellated banded cigarette paper

Publications (2)

Publication Number Publication Date
EP2160105A2 EP2160105A2 (en) 2010-03-10
EP2160105B1 true EP2160105B1 (en) 2013-03-06

Family

ID=40075606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08807126A Active EP2160105B1 (en) 2007-06-01 2008-05-29 Crenellated banded cigarette paper

Country Status (23)

Country Link
EP (1) EP2160105B1 (ja)
JP (1) JP5334960B2 (ja)
KR (1) KR101497163B1 (ja)
CN (1) CN101677630B (ja)
AU (1) AU2008256346B2 (ja)
BR (1) BRPI0811981B1 (ja)
CA (1) CA2685096C (ja)
CY (1) CY1114059T1 (ja)
DK (1) DK2160105T3 (ja)
ES (1) ES2409934T3 (ja)
HR (1) HRP20130388T1 (ja)
IL (1) IL201543A (ja)
MX (1) MX2009012618A (ja)
MY (1) MY149897A (ja)
NZ (1) NZ580602A (ja)
PL (1) PL2160105T3 (ja)
PT (1) PT2160105E (ja)
RU (2) RU2009149305A (ja)
SI (1) SI2160105T1 (ja)
TW (1) TWI454224B (ja)
UA (2) UA96341C2 (ja)
WO (1) WO2008146170A2 (ja)
ZA (2) ZA200907201B (ja)

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
TWI435698B (zh) * 2007-08-29 2014-05-01 Philip Morris Products Sa 具有波狀帶之香煙紙
DE102010026178A1 (de) 2010-07-06 2012-01-12 Tews Elektronik Gmbh & Co. Kg Vorrichtung zur Herstellung von Zigaretten in der tabakverarbeitenden Industrie sowie ein Verfahren hierzu
CA2833971A1 (en) * 2011-05-16 2012-11-22 Altria Client Services Inc. Alternating patterns in cigarette wrapper, smoking article and method
ES2402151B1 (es) * 2011-10-17 2014-02-28 Miquel Y Costas & Miquel, S.A. Procedimiento de impresión monocapa de papel para artículos de fumar.
DE102012111635B8 (de) 2012-11-30 2014-06-26 Delfortgroup Ag Verbessertes Zigarettenpapier für selbstverlöschende Zigaretten und Verfahren zu seiner Herstellung
GB201315492D0 (en) * 2013-08-30 2013-10-16 British American Tobacco Co Smoking Article

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US3805799A (en) * 1972-07-17 1974-04-23 Philip Morris Inc Cigarette ventilation achieved with coated wrapper
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IE48028B1 (en) * 1977-09-16 1984-09-05 Gallaher Ltd Smoking rod wrapper
CN2113623U (zh) * 1991-08-02 1992-08-26 长春市现代环境与保健科研所 一种阻燃烟蒂的香烟
US5820998A (en) * 1994-03-08 1998-10-13 Schweitzer-Mauduit International, Inc. Coated paper and process for making the same
US5997691A (en) 1996-07-09 1999-12-07 Philip Morris Incorporated Method and apparatus for applying a material to a web
US5878754A (en) * 1997-03-10 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article
US7237559B2 (en) * 2001-08-14 2007-07-03 R.J. Reynolds Tobacco Company Wrapping materials for smoking articles
US6596125B2 (en) 2001-09-21 2003-07-22 Philip Morris Incorporated Method and apparatus for applying a material to a web
US20040261805A1 (en) 2002-04-30 2004-12-30 Brown & Williamson Tobacco Corporation Smoking article
US7234471B2 (en) * 2003-10-09 2007-06-26 R. J. Reynolds Tobacco Company Cigarette and wrapping materials therefor
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US8646463B2 (en) 2005-08-15 2014-02-11 Philip Morris Usa Inc. Gravure-printed, banded cigarette paper

Also Published As

Publication number Publication date
UA97277C2 (en) 2012-01-25
KR20100018506A (ko) 2010-02-17
AU2008256346A1 (en) 2008-12-04
CA2685096A1 (en) 2008-12-04
PT2160105E (pt) 2013-05-27
RU2009149305A (ru) 2011-07-20
JP5334960B2 (ja) 2013-11-06
CN101677630B (zh) 2013-07-31
CY1114059T1 (el) 2016-07-27
MY149897A (en) 2013-10-31
AU2008256346B2 (en) 2013-05-23
EP2160105A2 (en) 2010-03-10
NZ580602A (en) 2012-08-31
ES2409934T3 (es) 2013-06-28
CN101677630A (zh) 2010-03-24
RU141743U1 (ru) 2014-06-10
DK2160105T3 (da) 2013-05-27
TW200917973A (en) 2009-05-01
IL201543A0 (en) 2010-05-31
UA96341C2 (ru) 2011-10-25
KR101497163B1 (ko) 2015-02-27
TWI454224B (zh) 2014-10-01
PL2160105T3 (pl) 2013-08-30
MX2009012618A (es) 2009-12-11
IL201543A (en) 2015-05-31
ZA200907201B (en) 2010-07-28
WO2008146170A2 (en) 2008-12-04
JP2010529307A (ja) 2010-08-26
HRP20130388T1 (en) 2013-06-30
BRPI0811981B1 (pt) 2018-08-28
WO2008146170A3 (en) 2009-01-29
CA2685096C (en) 2016-05-03
SI2160105T1 (sl) 2013-04-30
BRPI0811981A2 (pt) 2014-11-18
ZA200907711B (en) 2010-07-28

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