CN102427742A - Smoking article with improved flow restriction element - Google Patents

Smoking article with improved flow restriction element Download PDF

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Publication number
CN102427742A
CN102427742A CN2010800217136A CN201080021713A CN102427742A CN 102427742 A CN102427742 A CN 102427742A CN 2010800217136 A CN2010800217136 A CN 2010800217136A CN 201080021713 A CN201080021713 A CN 201080021713A CN 102427742 A CN102427742 A CN 102427742A
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CN
China
Prior art keywords
tubular portion
smoking article
filter
current limiting
limiting element
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Granted
Application number
CN2010800217136A
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Chinese (zh)
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CN102427742B (en
Inventor
M·斯拉斯利
Y·若尔迪尔
C·屈尔施泰纳
B·W·里特
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Philip Morris Products SA
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Philip Morris Products SA
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Publication of CN102427742A publication Critical patent/CN102427742A/en
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    • 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0283—Manufacture of tobacco smoke filters for filters with special features with means for a non-axial smoke flow
    • 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
    • A24D3/045—Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters
    • 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
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • 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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0279—Manufacture of tobacco smoke filters for filters with special features with tubes
    • 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
    • A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

A smoking article (10) comprising: a filter (14) and a rod (12) of smokable material, the filter comprising a flow restriction element (26, 26') attached to the rod (12) of smokable material. The current limiting element (26, 26') comprises: an upstream integral first tubular portion (30, 30'); a downstream integral second tubular portion (32, 32 ') having an outer diameter substantially the same as the outer diameter of the first tubular portion (30, 30'); and a central integral third tubular portion (34, 34 ') located between the first and second tubular portions (30, 30', 32, 32 '), the third tubular portion (34, 34') having a reduced outer diameter compared to the first and second tubular portions (30, 30 ', 32, 32'). A transverse barrier (36, 36 ') in which at least one aperture (38, 38') is provided is arranged between an upstream first cavity (40, 40 ') at least partially defined by an inner periphery of the first tubular portion (30, 30') and a downstream second cavity (42, 42 ') at least partially defined by an inner periphery of the second tubular portion (32, 32'). A venting zone in communication with the second cavity (42, 42') is provided at a location along the filter (14).

Description

Smoking article with improved current limiting element
Background technology
In a plurality of judicial powers, has the regulation of maximum carbon monoxide output, tar output and the nicotine output of constraint cigarette.
Well-known is to utilize the packaging material of low-permeability that cigarette and other smoking article are provided, so that reduce the sidestream smoke that during cigarette and other smoking article are fuming, is produced.Yet; Advantageously reduced sidestream smoke though comprise the packaging material of low-permeability; The output of the carbon monoxide that but these packaging material can increase these smoking articles unfriendly to be produced, and therefore increase by the carbon monoxide of the mainstream smoke that these smoking articles produced and the ratio of tar.
Though air-breather can be used to reduce the release of carbon monoxide and tar, the ventilated level may cause unacceptable low suction drag (RTD) level unfriendly.In addition, discharge and to discharge the two mutually, so air-breather has less influence to the ratio of carbon monoxide and tar with particulate because air-breather has reduced gas phase.
For example, comprise that one or more high density cellulose acetate filter segments can be used for total RTD of the smoking article with low-permeability packaging material and ventilated level is increased to acceptable level.Yet high density cellulose acetate filter segments typically has slight influence or has not reduced tar release in the influence in that carbon monoxide is discharged.
Therefore, with expectation a kind of such smoking article is provided, said smoking article has the packaging material that reduce sidestream smoke and has the ratio that is less than or equal to 1 carbon monoxide and tar.
Summary of the invention
According to the present invention, a kind of smoking article is provided, said smoking article comprises: the bar of being processed by the material that can light suction; And filter, it comprises the current limiting element that is attached to the bar of being processed by the material that can light suction.Current limiting element comprises: integral type first tubular portion at the upper reaches; Integral type second tubular portion in downstream, the external diameter of its external diameter and first tubular portion is basic identical; With integral type the 3rd tubular portion at center, it is between first tubular portion and second tubular portion, and the 3rd tubular portion is compared with second tubular portion with first tubular portion has the external diameter that reduces.The horizontal barrier that wherein is provided with at least one aperture is arranged at least in part first cavity at the upper reaches that limit in interior week of first tubular portion with at least in part between second cavity in the downstream that limit in interior week of second tubular portion.The ventilating zone that is communicated with second cavity is arranged on the position along filter.
According to the present invention, a kind of current limiting element according to smoking article of the present invention that is used for being included in also is provided, said current limiting element comprises: integral type first tubular portion; Integral type second tubular portion, it has and the essentially identical external diameter of first tubular portion; Integral type the 3rd tubular portion at center, it is between first tubular portion and second tubular portion, and the 3rd tubular portion is compared with second tubular portion with first tubular portion has the external diameter that reduces; Laterally barrier is provided with at least one aperture in the said horizontal barrier, and said horizontal barrier is arranged at least in part first cavity that limits in interior week of first tubular portion with at least in part between second cavity that limits in interior week second tubular portion; With one or more openings on the surface that is arranged in the second or the 3rd tubular portion, said one or more openings are communicated with second cavity.
According to the present invention, a kind of filter that is used for smoking article also is provided, said filter comprises according to current limiting element of the present invention.
In whole specification, each parts that term " upper reaches " and " downstream " are used to describe smoking article of the present invention with respect to during being fuming at smoking article from the bar suction of processing relative position through the direction of the mainstream smoke of filter by the material that can light suction.
Use comprises that the filter of current limiting element with above specific characteristic and ventilating zone can advantageously produce the smoking article according to height ventilation of the present invention of the RTD with expectation, and wherein the carbon monoxide of mainstream smoke maintains acceptable value with the ratio of tar.As following explanation in further detail, even the bar of processing when the material by lighting suction of smoking article also is like this when comprising the packaging material that reduce sidestream smoke.
Under the situation that need not significantly to revise, can use existing combination of filters and cigarette manufacturing equipment advantageously to produce the smoking article that has filter according to of the present invention, wherein said filter comprises the current limiting element with above specific characteristic.Because the shape of current limiting element; This current limiting element is flexible; And in the process of making according to filter of the present invention and smoking article; Especially filter according to the present invention is being attached to the bar of being processed by the material that can light suction so that during producing the processing according to smoking article of the present invention, this current limiting element can be compressed.So advantageously help to use existing filter combination and cigarette manufacturing equipment to make according to filter of the present invention and smoking article.
The 3rd tubular portion of current limiting element is compared the external diameter of minimizing and between the outside of peripheral and the 3rd tubular portion of filter, is advantageously set up ventilating zone with first tubular portion of current limiting element and second tubular portion.Simultaneously, first tubular portion of current limiting element advantageously provides reinforcement with the external diameter that second tubular portion and the 3rd tubular portion of current limiting element are compared increase, so that filter can not subside when for example smoking article is clamped between consumer's the finger.
First cavity at the upper reaches of current limiting element advantageously allows in use to aspirate through the mainstream smoke of the bar of being processed by the material that can light suction further to be assembled around said at least one aperture before downstream suction is through at least one aperture in the horizontal barrier.In addition, first cavity at the upper reaches helps prevent at least one aperture during being fuming, to block.
Can select to be arranged on the quantity and the size thereof in the aperture in the horizontal barrier, so that obtain RTD and the carbon monoxide of expectation and the ratio of tar.Preferably, laterally barrier comprises single aperture, and more preferably, laterally barrier comprises the single aperture at basic center.Comprise that at transverse baffle preferably between about 0.4mm and about 0.8mm, more preferably, the diameter in this aperture is about 0.6mm to the diameter in this aperture under the situation in aperture at single basic center.
Preferably, the length at least one aperture is between about 0.2mm and about 1mm, and more preferably, this length is about 0.7mm.In whole specification, term " length " is used to indicate the size along the longitudinal direction of smoking article.The length at least one aperture equals the thickness of horizontal barrier.
Preferably, being dimensioned to of at least one aperture produces enough pressure drops, so that make smoking article have the RTD between about 30mm WG (gauge, water gauge) and about 120mmWG, more preferably, this RTD is at least about 40mm WG.
The horizontal barrier of impermeable cigarette can be any suitable shapes.For example, laterally barrier can be vertical basically with the longitudinal axis of smoking article.Perhaps, laterally barrier with respect to from the bar suction of the processing direction through the mainstream smoke of filter being Frusto-conical and the shape of assembling or disperse by the material that can light suction.In more another embodiment, laterally barrier with respect to from the bar suction of the processing direction through the mainstream smoke of filter can be by the material that can light suction be recessed into or protrusion.Preferably, laterally barrier with respect to being recessed into from the bar suction of processing direction through the mainstream smoke of filter by the material that can light suction.This is advantageously in the process of making according to filter of the present invention and smoking article; Especially filter according to the present invention is being attached to the bar of being processed by the material that can light suction so that during producing the processing according to smoking article of the present invention, make the compression of current limiting element become easy.
Second cavity in the downstream of current limiting element advantageously allows to mix with the air that aspirates through ventilating zone before in being inhaled into consumer's mouth through the mainstream smoke that is arranged on the one or more apertures suction in the horizontal barrier.
Ventilating zone provides ventilation for the mainstream smoke that aspirates from the bar of being processed by the material that can light suction at second cavity of the location downstream at least one aperture of the horizontal barrier that is arranged in current limiting element of the current limiting element of filter.Preferably, the upper reaches at least one aperture in horizontal barrier do not provide ventilation.Only provide ventilation advantageously to limit and understand the degree that smoking article is aspirated in attempt more fiercely during the consumer is aspirating in the downstream at least one aperture.Along with the flow of suction increases, and to compare in the smoking article that comprises traditional cellulose acetate filter, the pressure drop at current limiting element place more promptly increases.Thereby the consumer sucks the ventilation that will increase mainstream smoke more fiercely during aspirating, rather than the release that increases mainstream smoke.In addition, only the downstream at least one aperture in the transverse wall of current limiting element provide ventilation advantageously the function of ventilating zone and the function at least one aperture to be separated (being respectively ventilation levels and RTD).
Preferably, filter is attached to the bar of being processed by the material that can light suction through air-locked basically tipping paper tape.Preferably, ventilating zone comprises at least one row that a part of passing tipping paper is provided with perforation along circumference, and more preferably, ventilating zone comprises passes at least one row that tipping paper and the overlapping part of the 3rd tubular portion current limiting element be provided with perforation along circumference.
Preferably, at least one row along the perforation of circumference be positioned at the mouth end of smoking article at a distance of the position of 12mm at least.
Perforation in the tipping paper is processed before can or using conventional art structure smoking article during using conventional art structure smoking article.For example, the perforation in the tipping paper can use online laser beam perforation, machine drilling or static perforation to produce.Preferably, tipping paper is by pre-punching.
In one embodiment; First cavity of current limiting element is at least in part first tubular portion of current limiting element and limiting of the 3rd tubular portion in interior week, and second cavity of current limiting element limiting in interior week second tubular portion of current limiting element at least in part.
In this embodiment, preferably, in the cross machine direction upstream end face of second tubular portion, be provided with one or more openings, said one or more openings form at least one row of second cavity and ventilating zone along the communication path between the perforation of circumference.More preferably, in the cross machine direction upstream end face of second tubular portion, be provided with a plurality ofly along the basically equidistantly isolated opening of circumference, these openings form at least one row of second cavity and ventilating zone along the communication path between the perforation of circumference.For example, can be at second tubular portion from the cross machine direction upstream end face that the 3rd tubular portion extends radially outwardly, be provided with 12 along the basically equidistantly isolated opening of circumference.
Preferably, the diameter of said one or more openings more preferably is about 0.5mm between about 0.3mm and about 0.8mm.
In alternative embodiment; First cavity of current limiting element is at least in part the limiting of first tubular portion of current limiting element in interior week, and second cavity of current limiting element is at least in part second tubular portion of current limiting element and limiting of the 3rd tubular portion in interior week.
In this embodiment, preferably, in the circumferential surface of the 3rd tubular portion, be provided with one or more openings, said one or more openings form at least one row of second cavity and ventilating zone along the communication path between the perforation of circumference.
For example, a pair of elongated opening opposing can be set in the circumferential surface of the upper reaches of the 3rd tubular portion.
Preferably, between about 50% and about 90%, more preferably, between about 60% and about 80%, most preferably, this ventilation levels is about 70% according to the ventilation levels of smoking article of the present invention according to the ventilation levels of smoking article of the present invention.
Current limiting element can be processed by any suitable material or the combination of material.The suitable material that can form current limiting element includes but not limited to: the composition or the compound of plastics (for example, polypropylene, polyethylene, polystyrene, nylon, polysulfones, polyester and polyurethane), cellulosic material and these materials.
Preferably, current limiting element is processed by biodegradable material, more preferably, is processed by biodegradable polymeric material.Suitable biodegradable polymeric materials are known in the art and may be commercially available on the market from Italy Novara Novamont under the tradename Mater-Bi
Figure BDA0000109678690000061
polymeric materials as well as from BASF in Ludwigshafen, Germany The trade name Ecoflex and Ecovio
Figure BDA0000109678690000063
polymeric material.
Preferably, current limiting element is single parts, and more preferably, current limiting element is single injection-molded parts.
Preferably, current limiting element has the length between about 10mm and about 20mm, and more preferably, current limiting element has the length between about 12mm and about 14mm, and most preferably, current limiting element has the length of about 13mm.
Preferably, first tubular portion of current limiting element has the length at least about 4mm, and more preferably, first tubular portion of current limiting element has the length at least about 5mm.
Preferably, second tubular portion of current limiting element has the length at least about 3mm, and most preferably, second tubular portion of current limiting element has the length of about 3.5mm.
Preferably, the 3rd tubular portion of current limiting element has the length at least about 3mm, and most preferably, the 3rd tubular portion of current limiting element has the length of about 3.5mm.
Preferably, laterally the downstream end of barrier and second tubular portion of current limiting element is at a distance of at least about 1mm, more preferably, and apart at least about 1.5mm.
Preferably; First tubular portion of current limiting element and second tubular portion have the external diameter between about 6mm and about 9mm, more preferably, have the external diameter between about 7mm and about 8.4mm; Most preferably, has external diameter between about 7.5mm and about 7.9mm.
Preferably, the 3rd tubular portion of current limiting element has the external diameter between about 4mm and about 7.5mm, more preferably, has the external diameter between about 4.5mm and about 6.8mm, most preferably, has the external diameter between about 4.5mm and about 5.5mm.
Filter can also comprise the one or more filter segment that are positioned at the current limiting element upper reaches.Alternately or additionally, filter can also comprise the one or more filter segment that are positioned at the current limiting element downstream.In a preferred embodiment, filter also comprises first filter segment that is positioned at the current limiting element upper reaches and second filter segment that is positioned at the current limiting element downstream.Preferably, first filter segment and second filter segment have the length between about 5mm and about 12mm, more preferably, have the length between about 6mm and about 8mm, most preferably, have the length of about 7mm.
Comprise the one or more filter segment that are positioned at the current limiting element upper reaches and be positioned under the situation of one or more filter segment in current limiting element downstream that at filter upstream filter section and downstream filter section can be same or different.For example, filter can comprise the section of a pair of identical cellulose acetate tow on the either side that is arranged in current limiting element.Perhaps, filter can comprise the stopper and the hollow tube that is positioned at for example paper, cardboard or the cellulose acetate in current limiting element downstream of the cellulose acetate tow that is positioned at the current limiting element upper reaches.
Preferably, one or more filter segment comprise the filtering material of low particulate phase filter efficiency.Preferably, the particulate phase filter efficiency of each in one or more filter segment is all less than about 30%, more preferably, and less than about 20%.In special preferred embodiment, filter comprises first filter segment of the low particulate phase filter efficiency that is positioned at the current limiting element upper reaches and second filter segment that is positioned at the low particulate phase filter efficiency in current limiting element downstream.
One or more filter segment can comprise such as the cellulosic material of cellulose acetate tow or the fiber filter material of other suitable low filter efficiency.Comprise in one or more filter segment under the situation of cellulose acetate tow, can select total danier of monofilament danier and tow, so that obtain the particulate phase efficient and the RTD of expectation.Preferably, cellulose acetate tow has about 8 or bigger monofilament danier, and has about 28000 or littler total danier.
Preferably, current limiting element and one or more filter segment (under situation about existing) are surrounded with forming paper (plug wrap) band.In one embodiment, current limiting element and one or more filter segment are surrounded with air-locked basically moulding paper tape, preferably, and with the moulding paper tape encirclement that has between the permeability of about 7000Coresta unit and 20000Coresta unit.In alternative embodiment, current limiting element and one or more filter segment are surrounded with basic ventilative moulding paper tape.
Preferably, the moulding paper tape adheres to the external peripheral surface of first tubular portion of current limiting element.More preferably, forming paper adheres to the external peripheral surface of first tubular portion of current limiting element, so that set up bubble-tight basically sealing in the outer surface of first tubular portion.Most preferably, the moulding paper tape adheres to first tubular portion of current limiting element and the external peripheral surface of second tubular portion.
Comprise at filter under the situation of the filter segment that is positioned at the current limiting element upper reaches that preferably, the moulding paper tape adheres to the external peripheral surface of upstream filter section.More preferably, forming paper adheres to external peripheral surface and the external peripheral surface of first tubular portion of the upstream filter section of current limiting element, so that set up bubble-tight basically sealing in the outer surface of first tubular portion of current limiting element.
Comprise at filter under the situation of the filter segment that is positioned at the current limiting element downstream that preferably, the moulding paper tape adheres to the external peripheral surface of downstream filter section.
The moulding paper tape for example can use, and binding agent adheres to current limiting element and one or more filter segment.Can the bubble-tight sealing between first tubular portion that the binding agent of adhesion strength preferably and higher surface tackiness obtains moulding paper tape and current limiter be provided through use.Suitable binding agent is known in the art and the brand name from the Henkel of Dusseldorf ,Germany that can on market, buy is the binding agent of Adhesin
Figure BDA0000109678690000081
.
As stated, the filter that comprises the moulding paper tape preferably is attached to the bar of being processed by the material that can light suction through air-locked basically tipping paper tape.
Comprise at filter under the situation of air-locked basically moulding paper tape that preferably, ventilating zone is included in a part online formation, that pass forming paper and tipping paper is provided with during the manufacturing of smoking article at least one row perforation along circumference.
Comprise that at filter preferably, filter is attached to the bar of being processed by the material that can light suction through the tipping paper tape of pre-punching under the situation of basic moulding paper tape of breathing freely, the tipping paper tape of said pre-punching comprises the perforation of at least one row along circumference.
RTD according to smoking article of the present invention can regulate with ventilative forming paper through the tipping paper that uses pre-punching.Whole basically fresh air that the size at least one aperture of current limiting element can be designed to allow in use to flow through the perforation in tipping paper and the ventilative forming paper flows in second cavity in downstream.In addition; Through tipping paper with the overlapping part of the 3rd tubular portion of current limiting element in perforation is set; So ventilating zone; And through ventilating zone is separated with second cavity (the second cavity place in said downstream is mixed from mainstream smoke and the fresh air that the bar of being processed by the material that can light suction aspirates) in downstream, mainstream smoke can flow upstream also not flow out through the perforation in the tipping paper.Thereby, through the tipping paper that uses different pre-punching or the forming paper with different porosity levels or their combinations, the ventilation levels according to smoking article of the present invention is changed.
Preferably, filter has the total length between about 20mm and about 34mm, more preferably, has the total length between about 25mm and about 30mm, most preferably, has the total length of about 27mm.
Preferably, have the RTD of the total encapsulation (encapsulated) between about 250mm WG and 350mmWG, more preferably, have the RTD of the total encapsulation between about 275mm WG and 325mmWG according to the filter of smoking article of the present invention.
Preferably, smoking article according to the present invention has the not RTD of encapsulation at least about 30mm WG, more preferably, has the not RTD of encapsulation at least about 40mmWG.
Preferably, the bar of being processed by the material that can light suction comprises the tobacco that is surrounded by packaging material, and more preferably, the bar of being processed by the material that can light suction comprises the tobacco cutting filler that is surrounded by packaging material.
Preferably, the bar of being processed by the material that can light suction comprises packaging material, and said packaging material cause the sidestream smoke that produces decrease.The method that is used in according to the packaging material of the suitable minimizing sidestream smoke in the smoking article of the present invention and is used to produce this packaging material is being well-known in the art, and for example at US-A-5, explanation in 152,304.
Preferably, packaging material have higher basic weight and lower permeability.More preferably, packaging material are US-A-5, the type of explanation in 152,304.
Preferably, packaging material have at least about 35g/m 2Basic weight, more preferably, have between about 35g/m 2With about 60g/m 2Between basic weight, most preferably, have between about 40g/m 2With about 50g/m 2Between basic weight.
Preferably; Packaging material have about 18Coresta unit or littler permeability, more preferably, have the permeability between about 4Coresta unit and about 18Coresta unit; Most preferably, has permeability between about 5Coresta unit and about 8Coresta unit.
Preferably, packaging material comprise filler, and more preferably, packaging material comprise inorganic filler, and most preferably, packaging material comprise calcium carbonate.Preferably, packaging material have the loadings of filler between 20% and about 50% by weight, and more preferably, packaging material have about 40% loadings of filler by weight.
Preferably, packaging material also comprise combustion modifying agent.More preferably, packaging material have the combustion modifying agent between 0.3% and 5% by weight.Suitable combustion modifying agent is being known in the art; And include but not limited to: inorganic acid or organic acid acid salt; The sylvite and the sodium salt (monobasic potassium and sodium salt) that comprise polyvalent mineral acid are (for example; Phosphoric acid, pyrophosphoric acid, boric acid and sulfuric acid) and monobasic sylvite and sodium salt (mono-potassium and sodium salt) (for example, citric acid, butanedioic acid and fumaric acid); Thermal decomposition is to produce the compound of acid kind material, to comprise the polyacid salt with at least one active proton at the scene; Multiple ester, said multiple ester is an acid precursors, comprises phosphoric acid fat (for example, the phosphatic sylvite of alpha-D-glucose-1-); And the combination of above material.Preferably, combustion modifying agent is an acid salt, and more preferably, combustion modifying agent is a potassium dihydrogen phosphate.
Preferably, smoking article according to the present invention has the ratio that is less than or equal to 1 carbon monoxide and tar.
Preferably, smoking article according to the present invention has total nicotine free dry particulate matter (NFDPM) or " tar " release between about 3mg and about 12mg.
Description of drawings
To only further specify the present invention with reference to accompanying drawing with the mode of example, wherein:
Fig. 1 is the perspective view according to the amplification of the smoking article of the first embodiment of the present invention, and wherein tipping paper and filter forming paper are launched to represent the internal part of filter by the part;
Fig. 2 is the local longitudinal sectional view of filter of the smoking article of Fig. 1;
Fig. 3 is the transverse sectional view of current limiting element of filter of the smoking article of Fig. 2 of obtaining along line A-A (dotted line by among Fig. 2 illustrates);
Fig. 4 is the local longitudinal sectional view of the filter of smoking article according to a second embodiment of the present invention; And
Fig. 5 is the transverse sectional view of current limiting element of filter of the smoking article of Fig. 4 of obtaining along line B-B (dotted line by among Fig. 3 illustrates).
The specific embodiment
The smoking article 10 according to the first embodiment of the present invention shown in Fig. 1 comprises cylindrical tobacco rod 12 and filter 14.Filter 14 is attached to tobacco rod 12 through tipping paper tape 16; Said tipping paper tape 16 surrounds filter 14 and surrounds the adjacent part of tobacco rod 12; The adjacent part of said tobacco rod 12 comprises the charging 18 of tobacco cutting filler, and the charging 18 of said tobacco cutting filler is surrounded through the wrapping paper 20 of high basic weight, low-permeability.
Filter 14 comprises: first filter segment 22, said first filter segment 22 and tobacco rod 12 adjacent and adjacency; Second filter segment 24, said first filter segment 22 is positioned at the mouth end place of smoking article 10; With the injection-molded current limiting element 26 of one, said current limiting element is arranged between first filter segment 22 and second filter segment 24.First filter segment 22 and second filter segment 24 be the cellulose acetate tow filter segment of low particulate efficient preferably.
First filter segment 22 and second filter segment 24 and current limiting element 26 are surrounded by moulding paper tape 28.
As illustrating in further detail among Fig. 2, the current limiting element 26 that is preferably formed by biodegradable polymeric material comprises: integral type first tubular portion 30 at the upper reaches, itself and first filter segment, 22 adjacent and adjacency; Integral type second tubular portion 32 in downstream, its external diameter is basic identical with the external diameter of first tubular portion 30, and with second filter segment, 24 adjacent and adjacency; With integral type the 3rd tubular portion 34 at center, it is compared with second tubular portion 32 with first tubular portion 30 between first tubular portion 30 and second tubular portion 32, and said the 3rd tubular portion 34 has the external diameter that reduces.Forming paper (plug wrap) 28 adheres to the external peripheral surface of first tubular portion 30 of external peripheral surface and the current limiting element 26 of first filter cell 22 through the binding agent (not shown), be airtight basically so that form in the outer surface of first tubular portion 30 of current limiting element 26.
Because the 3rd tubular portion 34 is compared with second tubular portion 32 with first tubular portion 30 and is had the external diameter that reduces, so the external peripheral surface of the inner surface of forming paper 28 and the 3rd tubular portion 34 is spaced apart, as shown in Figure 2.As following further specifying, the space between the external peripheral surface of forming paper 28 and overlapping tipping paper tape 16 and the 3rd tubular portion 34 forms ventilating zone.
Current limiting element 26 also comprises horizontal barrier 36, is provided with the single center port 38 that diameter reduces in the said horizontal barrier 36.As shown in Figure 2, laterally barrier 36 is arranged at least in part first cavity 40 at the upper reaches that limit in interior week of first tubular portion 30 of current limiting element 26 and the 3rd tubular portion 34 with at least in part between second cavity 42 in the downstream that limit in interior week of second tubular portion 32 of current limiting element.
Through one row or the many rows perforation 44 (being shown in broken lines among Fig. 1 and 2) along circumference being set with a part at overlapping forming paper 28 of the 3rd tubular portion 34 of current limiting element 26 and tipping paper 16.As shown in Figure 3, in the cross machine direction upstream end face that extends radially outwardly around the 3rd tubular portion 34 of second tubular portion 32, be provided with a plurality of basic along the equidistantly isolated opening 46 of circumference.These openings 46 formation are arranged on the row of one in tipping paper 16 and the forming paper 28 or arrange along the perforation 44 of circumference and the communication path between second cavity 42, as shown in Figure 2 more.
In use, from the mainstream smoke of the tobacco rod 12 of smoking article 10 first filter segment 22 through filter 14 by towards downstream suction in first cavity 40 of current limiting element 26.Be sucked into the mainstream smoke in first cavity 40, further before the center port 38 of downstream suction through the horizontal barrier 36 of current limiting element 26 enters into second cavity 42 of current limiting element 26, concentrated around said center port 38.
Fresh air also is inhaled in second cavity 42 along the equidistantly isolated opening 46 of circumference along a plurality of basic in the perforation 44 of circumference and the cross machine direction upstream end face that is arranged on second tubular portion 32 through a row or the many rows who is arranged in tipping paper 16 and the forming paper 28.The mainstream smoke that sucks through the center port in the horizontal barrier 36 38 by further before downstream suction is through second filter cell 24 with second cavity 42 in fresh air mix.
During use, the wrapping paper 20 of the high basic weight of tobacco rod 12, low-permeability has advantageously reduced the sidestream smoke that is produced by smoking article 10 in known manner.
Structure according to the smoking article of the second embodiment of the present invention shown in the Figure 4 and 5 is similar to a great extent with the smoking article 10 according to the first embodiment of the present invention shown in Fig. 1 to 3 with design.That use in Figure 4 and 5 that similar Reference numeral indicates according to a second embodiment of the present invention smoking article and the corresponding characteristic of characteristic above-mentioned smoking article according to the first embodiment of the present invention.
Be according to the smoking article 10 of the first embodiment of the present invention shown in Fig. 1 to 3 with according to the only difference between the smoking article of the second embodiment of the present invention shown in the Figure 4 and 5; Row in tipping paper 16 and forming paper 28 or many rows are along the position of the opening of formation communication path between the perforation 44 of circumference and second cavity, and the position of the horizontal barrier in the current limiting element.
As shown in Figure 4; In the current limiting element 26 ' of the filter 14 of according to a second embodiment of the present invention smoking article, laterally barrier 36 ' is arranged at least in part first cavity 40 ' at the upper reaches that limit in interior week of first tubular portion 30 ' of current limiting element 26 ' with at least in part between second cavity 42 ' in the downstream that limit in interior week of second tubular portion 32 ' of current limiting element 26 ' and the 3rd tubular portion 34 '.
In a second embodiment; As shown in Figure 5; In the circumferential surface of the 3rd tubular body portion 34 ' of current limiting element 26 ', be provided with a pair of relative elongated open 46 ', said a pair of relative elongated open 46 ' forms one in tipping paper 16 and the forming paper 28 and arranges or arrange along the perforation 44 of circumference and the communication path between second cavity 42 ' more.
In use; Fresh air is inhaled in second cavity 42 ' along the perforation 44 of circumference and a pair of relative elongated open 46 ' in the circumferential surface that is arranged on the 3rd tubular body portion 34 ' through the row in tipping paper 16 and the forming paper 28 or many rows, locates fresh air at said second cavity 42 ' and mixes with mainstream smoke through the 38 ' suction of the center port in the horizontal barrier 36 '.
Tobacco rod 12 according to the smoking article of the first embodiment of the present invention and second embodiment can use traditional plume manufacturing equipment structure; In traditional plume manufacturing equipment; Tobacco cutting filler 18 on conveyer belt, is formed continuous bar by air and with the continuous belts parcel of the wrapping paper 20 of high basic weight, low-permeability, the continuous belts of said wrapping paper 20 is glued together along its longitudinal seam then.
Filter 14 according to the smoking article of the first embodiment of the present invention and second embodiment also can use the existing high rate filter bar manufacturing equipment structure that adopts known combination technology.
Then; Can use the existing machine that filter is attached to tobacco rod that uses during the known cigarette with filter tip producing, adhere to and filter 14 and tobacco rod 12 are bonded to each other and attach dress around the adjacent part of filter 14 and tobacco rod 12 through be hinged with paper tape 16.
Table 1 has provided total amount, tar and carbon monoxide (CO) and the CO/ tar of nicotine (SN) in the puff number (puff count), cigarette of following cigarette than comparing with CO/SN: first cigarette (cigarette A); It is according to the structure of the first embodiment of the present invention shown in Fig. 1 to 3, and wherein first filter segment and second filter segment are the stoppers of low particulate efficient cellulose acetate tow; According to second cigarette of the present invention (cigarette B), it is configured to identical with cigarette A major part, but wherein the hollow cylindrical tube processed with cellulose acetate tow of second filter segment replaces; According to the 3rd cigarette of the present invention (cigarette C), it is configured to identical with cigarette A major part, but the tobacco rod packaging material of wherein high basic weight, low-permeability are with the wrapping paper replacement of traditional basic weight and permeability.
In order to compare, table 1 also provides three total amount, tar and carbon monoxide (CO) and CO/ tar ratio and CO/SN ratios according to nicotine (SN) in puff number of the present invention, as to have the cigarette of traditional cellulose acetate tow filter, the cigarette.Two tobacco rods (cigarette D and E) that comprise the packaging material with high basic weight, low-permeability in these three cigarettes remain a pipe tobacco (cigarette F) that has the packaging material of traditional basic weight and permeability cigarette comprising.
Table 1
Figure BDA0000109678690000141
Figure BDA0000109678690000151
As shown in table 1, for the cigarette with traditional cellulose acetate tow filter, the packaging material (cigarette D and E) that comprise high basic weight, low-permeability cause the carbon monoxide output that increases.In addition; Reduced carbon monoxide output significantly though have the raising of ventilation levels of the cigarette (cigarette D and E) of the packaging material of traditional cellulose acetate tow filter and high basic weight, low-permeability, this does not influence the ratio of carbon monoxide and tar significantly.
Compare with cigarette with traditional cellulose acetate tow filter, according to the ratio of the carbon monoxide of cigarette of the present invention (cigarette A, B and C) and tar all less than 1.0.Especially; As shown in table 1, in the puff number of the cigarette (cigarette B) of second filter segment that constitutes according to the packaging material with high basic weight, low-permeability of the present invention with by the hollow cylindrical tube that cellulose acetate tow is processed and the cigarette nicotine (SN) and tar output and cigarette (cigarette F) with packaging material of traditional cellulose acetate tow filter and traditional basic weight and permeability puff number and cigarette in nicotine (SN) and tar export very similar.Yet F compares with cigarette, although cigarette B comprises the packaging material that reduce sidestream smoke, the ratio of nicotine advantageously significantly reduces in the ratio of the carbon monoxide output of cigarette B and carbon monoxide and tar and carbon monoxide and the cigarette.
Below with reference to comprising that the smoking article of the filter with first filter segment and second filter segment exemplarily explained the present invention, wherein said first filter segment and second filter segment comprise the stopper that cellulose acetate tow is processed.Yet; To be to be understood that; Can comprise filter according to smoking article of the present invention with so one or more filter segment; Said one or more filter segment comprises the composition such as paper (for example, filter paper or carbon paper), cardboard, plastics (for example, polypropylene, polyethylene, polystyrene, nylon, polysulfones, polyester and polyurethane), biopolymer and these materials.
In addition; Though below with reference to comprising that the smoking article of the filter with current limiting element exemplarily explained the present invention; Be provided with the horizontal barrier in the aperture at single basic center in the wherein said current limiting element; But will should be understood that according to smoking article of the present invention to comprise filter, be provided with single acentric aperture or two or more apertures in this horizontal barrier with so horizontal barrier.

Claims (15)

1. a smoking article (10), said smoking article comprises:
The bar of processing by the material that can light suction (12);
Filter (14), said filter comprise the current limiting element (26,26 ') that is attached to the said bar of being processed by the material that can light suction (12), and said current limiting element (26,26 ') comprising:
Integral type first tubular portion (30,30 ') at the upper reaches;
Integral type second tubular portion (32,32 ') in downstream, the external diameter of the external diameter of said second tubular portion and said first tubular portion (30,30 ') is basic identical;
Integral type the 3rd tubular portion (34,34 ') at center, said the 3rd tubular portion are positioned at said first tubular portion and second tubular portion (30; 30 ', 32,32 ') between; And with said first tubular portion and second tubular portion (30,30 ', 32; 32 ') compare, said the 3rd tubular portion (34,34 ') has the external diameter that reduces; With
Laterally barrier (36,36 ') is provided with at least one aperture (38 in the said horizontal barrier; 38 '), said horizontal barrier (36,36 ') is arranged in first cavity (40 at the upper reaches; 40 ') and between second cavity (42,42 ') in downstream, first cavity at the wherein said upper reaches is at least in part by said first tubular portion (30; Limiting in interior week 30 '), second cavity in said downstream be limiting by said second tubular portion (32,32 ') in interior week at least in part; And
Ventilating zone, said ventilating zone is communicated with at position and said second cavity (42,42 ') along said filter (14).
2. smoking article according to claim 1 (10) wherein, is provided with the aperture (38,38 ') at single basic center in the said horizontal barrier (36,36 '), the diameter in said aperture is between 0.4mm and 0.8mm.
3. smoking article according to claim 1 and 2 (10); Wherein, Said filter (14) is attached to the said bar of being processed by the material that can light suction (12) through tipping paper tape (16), and said ventilating zone comprises the perforation (44) of at least one row along circumference, and said at least one row passes said tipping paper (16) and said current limiting element (26 along the perforation of circumference; 26 ') the overlapping part setting of the 3rd tubular portion (34,34 ').
4. smoking article according to claim 3 (10), wherein, first cavity (40) of said current limiting element (26) is limiting by said first tubular portion and the 3rd tubular portion (30,34) in interior week at least in part.
5. smoking article according to claim 4; Wherein, In the cross machine direction upstream end face of said second tubular portion (32), be provided with one or more openings (46), said one or more openings form said second cavity (42) and said at least one row along the communication path between the perforation (44) of circumference.
6. smoking article according to claim 3, wherein, second cavity (42 ') of said current limiting element (26 ') is limiting by said second tubular portion and the 3rd tubular portion (32 ', 34 ') in interior week at least in part.
7. smoking article according to claim 6; Wherein, In the circumferential surface of said the 3rd tubular portion (34), be provided with one or more openings (46 '), said one or more openings form said second cavity (42 ') and said at least one row along the communication path between the perforation (44) of circumference.
8. according to each the described smoking article (10) in the above claim; Wherein, Said filter (14) also comprises first filter segment (22) that is positioned at said current limiting element (26, the 26 ') upper reaches and is positioned at second filter segment (24) in said current limiting element (26,26 ') downstream.
9. according to each the described smoking article (10) in the above claim, wherein, packaging material (20) have between 35g/m 2And 60g/m 2Between basic weight, by weight between the loadings of filler between 20% and 50%, between permeability between 2Coresta unit and the 18Coresta unit and the combustion modifying agent between 0.3% and 5% by weight.
10. according to each the described smoking article (10) in the above claim, said smoking article has the ventilation levels at least about 50%, preferably, has the ventilation levels at least about 60%.
11. according to each the described smoking article (10) in the above claim, wherein, the length of said current limiting element (26,26 ') is at least about 10mm, more preferably, the length of said current limiting element (26,26 ') is at least about 13mm.
12. according to each the described smoking article (10) in the above claim; Wherein, Said horizontal barrier (36,36 ') is with respect to being recessed into from the direction of the said bar of being processed by the material that can light suction (12) suction through the mainstream smoke of said filter (14).
13. according to each the described smoking article (10) in the above claim, the carbon monoxide of said smoking article is less than or equal to 1 with the ratio of tar.
14. one kind is used for being included in the current limiting element (26,26 ') according in each described smoking article (10) of above claim, said current limiting element comprises:
Integral type first tubular portion (30,30 ');
Integral type second tubular portion (32,32 '), the external diameter of the external diameter of said second tubular portion and said first tubular portion (30,30 ') is basic identical;
Integral type the 3rd tubular portion (34,34 ') at center, said the 3rd tubular portion are positioned at said first tubular portion and second tubular portion (30; 30 ', 32,32 ') between; Said the 3rd tubular portion (34,34 ') and said first tubular portion and second tubular portion (30,30 '; 32,32 ') compare and have the external diameter that reduces;
Laterally barrier (36,36 ') is provided with at least one aperture (38,38 ') in the said horizontal barrier; Said horizontal barrier (36,36 ') is arranged in first cavity (40,40 ') and second cavity (42; 42 ') between, wherein, said first cavity is at least in part by said first tubular portion (30; Limiting in interior week 30 '), said second cavity be limiting by said second tubular portion (32,32 ') in interior week at least in part; And
One or more openings, said one or more openings are positioned in the surface of said second tubular portion or the 3rd tubular portion (32,34 '), and are communicated with said second cavity (42,42 ').
15. a filter (14) that is used for smoking article (10), said filter comprises current limiting element according to claim 14 (26,26 ').
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HK1165233A1 (en) 2012-10-05
TW201103449A (en) 2011-02-01
RU2011151720A (en) 2013-06-27
EP2432338A1 (en) 2012-03-28
JP2012527221A (en) 2012-11-08
KR20120042761A (en) 2012-05-03
CN102427742B (en) 2014-12-31
SG175910A1 (en) 2011-12-29
ES2512017T3 (en) 2014-10-23
PT2432338E (en) 2014-10-03
RS53576B1 (en) 2015-02-27
EP2432338B1 (en) 2014-07-16
JP5710601B2 (en) 2015-04-30
EP2253231A1 (en) 2010-11-24
MY154297A (en) 2015-05-29
CO6390089A2 (en) 2012-02-29
PL2432338T3 (en) 2014-12-31
MX2011012454A (en) 2011-12-16
AR079391A1 (en) 2012-01-25
RU2524898C2 (en) 2014-08-10
DK2432338T3 (en) 2014-09-08
AU2010251445B2 (en) 2015-07-02
US20100288293A1 (en) 2010-11-18
UA103925C2 (en) 2013-12-10
SI2432338T1 (en) 2014-09-30
BRPI1013065A2 (en) 2016-04-05

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