US20180338522A1 - Smoking article - Google Patents

Smoking article Download PDF

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Publication number
US20180338522A1
US20180338522A1 US15/755,856 US201615755856A US2018338522A1 US 20180338522 A1 US20180338522 A1 US 20180338522A1 US 201615755856 A US201615755856 A US 201615755856A US 2018338522 A1 US2018338522 A1 US 2018338522A1
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United States
Prior art keywords
filter
smoking article
wrappers
plug
filtration material
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.)
Abandoned
Application number
US15/755,856
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English (en)
Inventor
Silvia Delgado
Noritoshi Fujita
Hiroyoshi Ono
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
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 JT International SA filed Critical JT International SA
Assigned to JT INTERNATIONAL S.A. reassignment JT INTERNATIONAL S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJITA, NORITOSHI, DELGADO, Silvia, ONO, HIROYOSHI
Publication of US20180338522A1 publication Critical patent/US20180338522A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • 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
    • A24D1/004—Cigars; Cigarettes with a filter located between tobacco rods
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/56—Making tipping materials, e.g. sheet cork for mouthpieces of cigars or cigarettes, by mechanical means
    • A24C5/58—Applying the tipping materials
    • A24C5/586—Applying the tipping materials to a cigarette
    • 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • 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
    • 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers

Definitions

  • the present invention relates to a filter for a smoking article, a smoking article comprising said filter and the use of said filter in a smoking article.
  • Smoking articles such as cigarettes usually comprise a rod of tobacco or other aerosol forming material wrapped in a combustible wrapper, usually cigarette paper, and a filter aligned in end-to-end relationship with said tobacco rod.
  • the filter may include at least one plug of cellulose acetate tow attached to the tobacco rod or other aerosol forming material by tipping paper which overlies the filter and an adjacent end of the tobacco rod against which the filter is placed in abutment. Perforations may further be provided in the filter through the tipping paper to allow ventilation of the smoke drawn by consumers through the filter upon smoking.
  • One object of the present invention is to provide an improved smoking article comprising a filter solving the above needs.
  • a smoking article for example, a cigarette, comprising:
  • a filter comprising at least one plug of filtration material wrapped with one or more filter wrappers
  • the one or more filter wrappers have a basis weight of more than 32 grams per square metre and less than 50 grams per square metre.
  • the at least one plug of filtration material forming the filter has a plasticizer content of between about 5% and 10%.
  • the plasticizer content may be of between about 7% and 10%, such as of between about 7% and 9%, such as of between about 6% and 8%, for example of about 8%.
  • the hardness of the smoking article measured at any point of the filter when attached to the tobacco rod by tipping material may be less than about 90%.
  • the inventors have found that hardness values of below 90% can be achieved by merely using plug wrappers having a basis weight of more than 32 grams per square metre and less than 50 grams per square metre for the plug(s) of filtration material in the filter without increasing the content of plasticizer used in the filtration material, while offering easy machinability of the plug wrappers during manufacturing of the smoking articles, thereby not increasing the machine costs, and further allowing easy online laser perforation of the filter, what requires extreme care and powerful lasers when plug wrappers having a basis weight of 50 grams per square metre and higher are used.
  • the invention relates to a filter for a smoking article.
  • the filter has at least one plug of filtration material wrapped with one or more filter wrappers, where the one or more filter wrappers have a basis weight of more than 32 grams per square metre and less than 50 grams per square metre.
  • the at least one plug of filtration material forming the filter has a plasticizer content of between about 5% and 10%.
  • the plasticizer content may be of between about 7% and 10%, such as of between about 7% and 9%, such as of between about 6% and 8%, for example of about 8%.
  • the invention relates to the use of the filter according to the second aspect of the invention in a smoking article.
  • FIG. 1 illustrates the definition of the hardness value as used throughout the description.
  • FIG. 2 illustrates a perspective view of an apparatus for determining the hardness of a filter or a smoking article, in a first configuration
  • FIG. 3 illustrates a side view of the apparatus of FIG. 2 , in a first configuration
  • FIG. 4 illustrates a side view of the apparatus of FIG. 2 , in a second configuration.
  • the invention relates to a smoking article, for example, a cigarette, comprising:
  • a filter comprising at least one plug of filtration material wrapped with one or more filter wrappers
  • the one or more filter wrappers have a basis weight of more than 32 grams per square metre and less than 50 grams per square metre, and the at least one plug of filtration material forming the filter has a plasticizer content of between about 5% and 10%.
  • the hardness of the smoking article measured at any point of the filter when attached to the tobacco rod by tipping material may be less than about 90%.
  • the inventors have found that hardness values of below 90% can be achieved by using merely plug wrappers having a basis weight of more than 32 grams per square metre and less than 50 grams per square metre for the plug(s) of filtration material in the filter without increasing the content of plasticizer used in the filtration material, while offering easy machinability of the plug wrappers during manufacturing of the smoking articles, thereby not increasing the machine costs, and further allowing easy online laser perforation of the filter, what requires extreme care and powerful lasers when plug wrappers having a basis weight of 50 grams per square metre and higher are used.
  • the hardness values specified for the smoking articles according to the invention correspond to hardness measurements obtained submitting the smoking articles to the DD60A test, i.e. using a known DD60A Densimeter (manufactured and made commercially available by Heinr. Borgwaldt GmbH, Germany) device.
  • FIG. 1 shows a cigarette 100 , comprising a filter wrapper 102 and a tipping material 101 , before applying a load F and the same cigarette 110 whilst applying load F.
  • the cigarette 100 before the load F has been applied has a diameter D S .
  • the cigarette 110 after applying a set load for a set duration (but with the load still applied) has a (reduced) diameter D F .
  • the hardness is defined as follows:
  • D S is the initial (non-depressed) diameter of the cigarette
  • D E is the depressed diameter after applying a set load for a set duration. The harder the material, the closer the hardness is to 100%.
  • smoking articles should be aligned parallel in a plane and the same portion of each smoking article to be tested should be subjected to a set load for a set duration.
  • This test is performed using a known DD60A Densimeter device (manufactured and made commercially available by Heinr. Borgwaldt GmbH, Germany), which is fitted with a measuring head for cigarettes and with a cigarette receptacle.
  • the load is applied using two load applying cylindrical rods, which extend across the diameter of all of the smoking articles at once.
  • the test should be performed such that twenty contact points occur between the smoking articles and the load applying cylindrical rods.
  • the filters to be tested may be long enough such that only ten smoking articles are needed to form twenty contact points, with each smoking article contacting both load applying rods (because they are long enough to extend between the rods).
  • twenty smoking articles should be used to form the twenty contact points, with each smoking article contacting only one of the load applying rods, as further discussed below.
  • Two further stationary cylindrical rods are located underneath the smoking articles, to support the smoking articles and counteract the load applied by each of the load applying cylindrical rods. Such an arrangement is described in more detail below, and shown in FIGS. 2 to 4 which represent a known prior art arrangement as disclosed e.g. in WO 2015/007400 A1 and WO 2015/007401 A1.
  • the hardness of the smoking article measured at any point of the filter when attached to the tobacco rod by tipping material is less than about 90% but higher than about 85%; for example, the hardness is in the range of between 86% and 88%.
  • the inventors have interestingly found out through consumer studies and experimentation of various filter structure that consumers could actually feel an increase in filter hardness in their fingers and on their lips only once the hardness value reached 85% and more compared with standard filter cigarettes available, i.e. cigarettes having filters comprising filter wrappers on between about 20 grams per square metre and 30 grams per square metre, which allow to achieve hardness of about 85% in combination with standard plasticizer contents of about 4 to 6% by weight of filter tow material. Even more interestingly studies carried out by the inventors have shown that consumers did not substantially perceive an increase in filter hardness above 90%, and certainly not perceive filters having a hardness of above 90% as of having an increased quality compared to those having only a hardness of between 85% and 90%. However smoking articles showing a hardness of 90% or more require the use of either thicker filter wrappers of at least 50 grams per square metre or more and/or the use of higher contents of plasticizer in the filter tow material, with the downsides mentioned above.
  • the one or more filter wrappers may comprise any suitable material or combination of materials.
  • suitable materials include, but are not limited to, cellulose based materials, cellulose based film, cardboard, paper, recon, and combinations thereof.
  • the one or more filter wrappers comprise paper.
  • one or more filter wrappers have a basis weight of between about 38 and about 49 grams per square metre, such as of between about 42 and about 48 grams per square metre, for example of about 45 grams per square metre.
  • the one or more filter wrappers may have a thickness of between about 50 to about 60 microns, for example of about 55 microns. Such range of thickness for the filter wrapper(s) of the filter further eases machinability of the smoking article's filter and additionally contributes to provide a proper roundness of the filter in the finished smoking article.
  • the one or more filter wrappers may have low porosity.
  • the one or more filter wrappers have a porosity of less than about 1000 Coresta units, such as less than about 500 Coresta units, or such as less than about 100 Coresta units.
  • the porosity may be as low as 100 Coresta units or lower, or 20 Coresta units or lower.
  • the porosity may be more than about 1 Coresta unit.
  • Such low porosity filter wrappers may help to improve the strength of the filter, and may help to increase the critical load of the smoking article. This can be particularly beneficial when the filter includes perforations extending through the tipping paper and the one or more filter wrappers.
  • the one or more filter wrappers of the filter may be non-porous wrappers.
  • the filtration material may comprise any suitable material or combination of materials.
  • the type of filtration material may be selected to provide the desired hardness.
  • suitable materials include, but are not limited to, cellulose acetate, cellulose, reconstituted cellulose, polylactic acid, polyvinyl alcohol, nylon, polyhydroxybutyrate, thermoplastic material, such as starch, non-woven materials, longitudinally oriented fibres and randomly oriented fibres, paper, crepe, PLA fibres, and combinations thereof. All or part of the filter may include activated carbon or other sorbent material.
  • the filter may include an adhesive or plasticizer or a combination thereof.
  • the filtration material comprises cellulose acetate.
  • the filtration material may have any suitable denier per filament (dpf) and total denier (td).
  • the filtration material may have a denier per filament (dpf) of between 1.5 to 6.0, such as 2.0 to 5.0, such as 3.0 to 5.0, for example of about 3.8.
  • the filter segment may have a total denier of less than about 40,000, such as less than about 38,000, such as less than about 35,000, such as less than about 33,000, for example of about 30,000.
  • the filter may have a tow weight in the range from about 90 mg to about 160 mg, such as in the range from about 100 mg to about 150 mg, such as in the range from about 120 mg to about 140 mg, such as in the range from about 130 mg to about 138 mg, for example of about 136.25 mg.
  • the at least one plug of filtration material forming the filter has a plasticizer content of between about 5% and 10% per weight of filtration material, such as of between about 7% and 10%, for example of about 8%. According to certain embodiments, as plasticizer triacetin is used.
  • the tipping material may comprise any suitable material or combination of materials.
  • suitable materials include, but are not limited to, cellulose based materials, cellulose based film, cardboard, paper, recon, and combinations thereof.
  • the tipping material comprises paper.
  • the filtration material comprises cellulose acetate, having triacetin as plasticizer, the one or more filter wrappers comprise paper, and the tipping material comprises paper.
  • the tipping material may have a basis weight in a range from about 30 g/m 2 to about 44 g/m 2 , such as in a range from about 31 g/m 2 to about 40 g/m 2 , such as in a range from about 31 g/m 2 to about 38 g/m 2 , for example of about 31 g/m 2 .
  • the tipping material may include a ventilation zone at a location about the filter.
  • the ventilation zone may comprise perforations through the tipping material.
  • the amount of ventilation including the number, layout, position and size of perforations, may be selected to provide the desired level of ventilation.
  • the perforations may extend through the filter wrapper or wrappers surrounding the plug of filtration material.
  • the filter wrapper or wrappers may be porous.
  • the tipping material may be standard pre-perforated tipping material.
  • the tipping material may be perforated in-line (for example, using a laser) during the manufacturing process according to the desired number, size and position of the perforations. When in-line perforations are made on the tipping material, these may be made simultaneously on the filter wrapper or wrappers.
  • the filter comprises a single plug of filtration material wrapped with a single filter wrapper.
  • the plug of filtration material may extend along the whole length of the filter.
  • the filter comprises at least one first plug of non-wrap acetate filtration material.
  • Non-wrap acetate filter plugs are particularly advantageous as they show an innate hardness and roundness compared to standard cellulose acetate filter plugs, which is conferred by steam hardening the outer surface of the acetate plug during filter making. Thereby use of a thick filter wrapper is not necessary to provide increased filter rigidity.
  • At least one non-wrap acetate filter plug is used it is further advantageous in another embodiment of the invention to provide the filter with at least one second plug of non-wrap acetate filtration material, the first and second plugs of non-wrap acetate filtration material being overwrapped by a single filter wrapper holding both first and second plugs in a spaced relationship to define a cavity there between.
  • Using two non-wrap acetate filtration material plug is particularly advantageous as it allows formation of cavity filters having a single filter wrapper of relatively low basis weight as proposed by the invention while still providing increased rigidity, where usually multi-plug filters require two or more filter wrapper layers.
  • the filter of the smoking article of the invention comprises at least one fluid-releasing member positioned in the cavity, preferably a breakable capsule containing an oil- or water-based liquid.
  • the one or more filter wrappers comprises a waterproof non-porous wrapper.
  • the length of the filter (which is the total length of the filter, including the plug of filtration material, measured in a direction substantially parallel to the longitudinal axis of the smoking article) may have any suitable value. However, it may be convenient for the filter length to be substantially the same as in conventional smoking articles. Therefore, the smoking article may comprise a filter with a length of between about 20 mm to 30 mm.
  • the circumference of the filter (which is the total circumference of the plug of filtration material together with the tipping material and the one or more filter wrappers) may have any suitable value. However, it may be convenient for the diameter to be substantially the same as in conventional smoking articles.
  • the filter may have a pressure drop, or resistance to draw, of between about 20 mmWC and about 140 mmWC, such as of between about 40 mmWC and about 120 mmWC, such as of between about 50 mmWC and about 100 mmWC, for example, of about 70 mmWC.
  • the tobacco rod may comprise any suitable type or types of tobacco material or tobacco substitute, in any suitable form.
  • the tobacco can be a single type of tobacco or a blend of two or more types of tobacco.
  • the tobacco may be in the form of cut filler (cut and conditioned tobacco).
  • the tobacco rod is wrapped in a combustible wrapper, usually cigarette paper.
  • the invention relates to a filter for a smoking article.
  • the filter comprises at least one plug of filtration material wrapped with one or more filter wrappers, where the one or more filter wrappers have a basis weight of more than 32 grams per square metre and less than 50 grams per square metre.
  • the at least one plug of filtration material forming the filter has a plasticizer content of between about 5% and 10%.
  • the plasticizer content may be of between about 7% and 10%, such as of between about 7% and 9%, such as of between about 6% and 8%, for example of about 8%.
  • the inventors have found that hardness values of below 90% can be achieved by using merely plug wrappers having a basis weight of more than 32 grams per square metre and less than 50 grams per square metre for the plug(s) of filtration material in the filter without increasing the content of plasticizer used in the filtration material, while offering easy machinability of the plug wrappers during manufacturing of the smoking articles, thereby not increasing the machine costs, and further allowing easy online laser perforation of the filter, what requires extreme care and powerful lasers when plug wrappers having a basis weight of 50 grams per square metre and higher are used.
  • the hardness of the filter measured at any point of the filter is less than about 90% but higher than about 85%, for example in the range of between 86% and 88%.
  • the one or more filter wrappers may comprise any suitable material or combination of materials as already described with regard to the first aspect of the invention.
  • suitable materials include, but are not limited to, cellulose based materials, cellulose based film, cardboard, paper, recon, and combinations thereof.
  • the one or more filter wrappers comprise paper.
  • one or more filter wrappers have a basis weight of between about 38 and about 49 grams per square metre, such as of between about 42 and about 48 grams per square metre, for example of about 45 grams per square metre.
  • the one or more filter wrappers may have a thickness of between about 50 to about 60 microns, for example of about 55 microns. Such range of thickness for the filter wrapper(s) of the filter further eases machinability of the filter and additionally contributes to provide a proper roundness of the filter.
  • the one or more filter wrappers of the filter may be non-porous wrappers.
  • the filtration material may comprise any suitable material or combination of materials as already described with regard to the first aspect of the invention.
  • the type of filtration material may be selected to provide the desired hardness.
  • suitable materials include, but are not limited to, cellulose acetate, cellulose, reconstituted cellulose, polylactic acid, polyvinyl alcohol, nylon, polyhydroxybutyrate, thermoplastic material, such as starch, non-woven materials, longitudinally oriented fibres and randomly oriented fibres, paper, crepe, PLA fibres, and combinations thereof. All or part of the filter may include activated carbon or other sorbent material.
  • the filter may include an adhesive or plasticizer or a combination thereof.
  • the filtration material comprises cellulose acetate.
  • the filtration material may have any suitable denier per filament (dpf) and total denier (td).
  • the filtration material has a denier per filament (dpf) of between 1.5 to 6.0, such as 2.0 to 5.0, such as 3.0 to 5.0, for example of about 3.8.
  • the filter segment may have a total denier of less than about 40,000, such as less than about 38,000, such as less than about 35,000, such as less than about 33,000, for example of about 30,000.
  • the filter may have a tow weight in the range from about 90 mg to about 160 mg, such as in the range from about 100 mg to about 150 mg, such as in the range from about 120 mg to about 140 mg, such as in the range from about 130 mg to about 138 mg, for example of about 136.25 mg.
  • the at least one plug of filtration material forming the filter may have a plasticizer content of between about 7% and 10% per weight of filtration material, more preferably about 8%. According to certain embodiments, as plasticizer triacetin is used.
  • the filtration material comprises cellulose acetate, having triacetin as plasticizer, and the one or more filter wrappers comprise paper.
  • the perforations may extend through the filter wrapper or wrappers surrounding the plug of filtration material.
  • the filter wrapper or wrappers may be porous.
  • the filter comprises at least one first plug of non-wrap acetate filtration material.
  • Non-wrap acetate filter plugs are particularly advantageous as they show an innate hardness and roundness compared to standard cellulose acetate filter plugs, which is conferred by steam hardening the outer surface of the acetate plug during filter making. Thereby use of a thick filter wrapper is not necessary to provide increased filter rigidity.
  • At least one non-wrap acetate filter plug is used it is further advantageous in another embodiment of the invention to provide the filter with at least one second plug of non-wrap acetate filtration material, the first and second plugs of non-wrap acetate filtration material being overwrapped by a single filter wrapper holding both first and second plugs in a spaced relationship to define a cavity there between.
  • Using two non-wrap acetate filtration material plug is particularly advantageous as it allows formation of cavity filters having a single filter wrapper of relatively low basis weight as proposed by the invention while still providing increased rigidity, where usually multi-plug filters require two or more filter wrapper layers.
  • the filter of the smoking article of the invention comprises at least one fluid-releasing member positioned in the cavity, preferably a breakable capsule containing an oil- or water-based liquid.
  • the one or more filter wrappers comprises a waterproof non-porous wrapper.
  • the filter may have a pressure drop, or resistance to draw, of between about 20 mmWC and about 140 mmWC, such as of between about 40 mmWC and about 120 mmWC, such as of between about 50 mmWC and about 100 mmWC, for example of about 70 mmWC.
  • the invention relates to the use of the filter according to the second aspect of the invention in a smoking article.
  • the hardness of various types of smoking article was tested using a known DD60A Densimeter (manufactured and made commercially available by Heinr. Borgwaldt GmbH, Germany) device, which was fitted with a measuring head for cigarettes and with a cigarette receptacle, as described above.
  • the samples were tested by following the method which is recommended for the known DD60A Densimeter device (manufactured and made commercially available by Heinr. Borgwaldt GmbH, Germany). That is, a sample of smoking articles were held in parallel alignment, and subjected to an overall load of 2 kg, for a period of 20 seconds, and the diameters of the smoking articles before and after compression were recorded. The depression was used to determine the hardness (%) of each smoking article.
  • the apparatus for testing the hardness of the smoking articles filters is shown in FIGS. 2, 3 and 6 .
  • ten identically designed smoking articles 10 are aligned parallel in a plane, and placed on underlying cylindrical rods 14 .
  • the smoking articles 10 extend between corresponding recesses in the walls 12 to hold the smoking articles in place.
  • the underlying cylindrical rods 14 extend parallel to the walls 12 .
  • Each smoking article 10 contacts the underlying rods 14 at two points, making for twenty total points of contact between the smoking articles to be tested and the underlying rods 14 .
  • the smoking articles should be positioned such that the portion of the filter to be tested is in contact with the underlying rods 14 . If filter is too short and the portion of the filter to be tested either does not contact both rods or contacts the rods very close to the ends of the portion of the filter to be tested, then it would appreciated that this could be achieved by using twenty cigarettes in a back-to-back configuration, such as that shown in FIG. 3 .
  • the concept of the DD60A Test is that the underlying cylindrical rods contact the sample material to be tested at twenty contact points. If the filter is sufficiently long to extend across the underlying rods, then the twenty contact points can be provided with ten samples (as shown in FIG. 2 ). If the filter is not sufficiently long, then the twenty contact points can be provided with twenty samples, as shown in FIG. 3 .
  • portions of the tobacco rods have been removed from each smoking article 10 , and the filter portion of each smoking article 10 rests on a respective cylindrical rod 14 .
  • the hardness of the mouth end segment is being tested, and therefore it is this portion of the filter which rests on the rod 14 , and the mouth end segment is approximately centered on the rods 14 .
  • the filter comprises a single plug of filtration material, the filter is approximately centered on the rods 14 , e.g. if a filter with a length of 24 mm is used the rod 14 is applied at a position located about 12 mm from the mouth end of the filter.
  • the filter is located on the rod 14 in such a way that at least one of the plugs is centered on the rod 14 , and in particular the rod 14 is not located at a position between the two plugs of filtration material. If necessary, the tips of the smoking articles extending away from the cylindrical rods 14 may be supported by an underlying supporting means to prevent pivoting of the smoking articles.
  • the apparatus is shown in FIG. 3 in a first configuration, in which the two load applying cylindrical rods 24 are raised above and out of contact from the smoking articles 10 .
  • the load applying cylindrical rods 24 are lowered to a second configuration, to come into contact with the smoking articles 10 , as shown in FIG. 4 .
  • the load applying rods 24 When in contact with the smoking articles 10 , the load applying rods 24 impart an overall load of 2 kg across the twenty contact points of the smoking articles 10 for a duration of 20 seconds. After 20 seconds have elapsed (and with the load still being applied to the smoking articles), the depression in the load applying cylindrical rods 24 across the smoking articles is determined, and then used to calculate the hardness.
  • filter cigarettes Five example filter cigarettes have been tested using the above described method and apparatus. All of them have a filter cigarette length of 84 mm and comprise a monoacetate filter, having a length of 27 mm and a circumference of 24.2 mm.
  • the filtration material used is cellulose acetate, having a total denier of 30,000 and a plasticizer content of 8.0 wt %, where triacetin was used as plasticizer.
  • the filtration material was wrapped by a non-porous filter wrapper, and the filter was attached in end-to-end relationship to a 57 mm tobacco rod by a non-porous tipping paper, having a basis weight of 31 g/m 2 .
  • Example 1 Example 2 Example 3 Example 4 Example 5 Cigarette length 84 mm 84 mm 84 mm 84 mm 84 mm 84 mm Tobacco rod length 57 mm 57 mm 57 mm 57 mm 57 mm Filter circumference 24.2 mm 24.2 mm 24.2 mm 24.2 mm 24.2 mm 24.2 mm Denier per filament 3.80 3.0 3.80 3.80 3.80 Total denier 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 Tow weight 136.25 mg 131.25 mg 126.5 mg 136.25 mg 135.75 mg Pressure drop 70 mmWC 80 mmWC 60 mmWC 60 mmWC 60 mmWC 60 mmWC Plasticizer content 8.0 wt % 8.0 wt % 8.0 wt % 8.0 wt % 8.0 wt % Filter wrapper basis weight 45 g/m 2 45 g/m 2 45 g/m 2 35 g/m 2 39 g/m 2 Filter wrapper thickness

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US15/755,856 2015-08-28 2016-08-26 Smoking article Abandoned US20180338522A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15182953.8 2015-08-28
EP15182953 2015-08-28
PCT/EP2016/001454 WO2017036588A1 (en) 2015-08-28 2016-08-26 Smoking article

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BR112018004072A2 (ru) 2018-10-02
EP3340816A1 (en) 2018-07-04
BR112018004072B1 (pt) 2022-08-09
JP2018527027A (ja) 2018-09-20
UA120890C2 (uk) 2020-02-25
EP3340816B1 (en) 2020-04-15
EA036041B1 (ru) 2020-09-17
KR102340574B1 (ko) 2021-12-21
KR20210031767A (ko) 2021-03-22
JP2021101717A (ja) 2021-07-15
KR20180044371A (ko) 2018-05-02
PL3340816T3 (pl) 2020-09-21
WO2017036588A1 (en) 2017-03-09
PH12018500327A1 (en) 2018-08-20
MX2018002436A (es) 2019-01-31
EA201890552A1 (ru) 2018-07-31
CN108024570A (zh) 2018-05-11
ES2796180T3 (es) 2020-11-26
KR102236173B1 (ko) 2021-04-06

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