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CN111035059A - Low-suction-resistance low-filtration cooling composite cigarette filter tip - Google Patents

Low-suction-resistance low-filtration cooling composite cigarette filter tip Download PDF

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Publication number
CN111035059A
CN111035059A CN201911399789.1A CN201911399789A CN111035059A CN 111035059 A CN111035059 A CN 111035059A CN 201911399789 A CN201911399789 A CN 201911399789A CN 111035059 A CN111035059 A CN 111035059A
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China
Prior art keywords
low
filter rod
cellulose acetate
particles
filtration
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CN201911399789.1A
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Chinese (zh)
Inventor
宋晓梅
杨占平
曹建华
张丽
窦峰
石浩轩
曹建国
沈晶晶
杨广美
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.)
Kunming Cellulose Fibers Co ltd
Zhuhai Cellulose Fibers Co ltd
Nantong Cellulose Fibers Co Ltd
Original Assignee
Kunming Cellulose Fibers Co ltd
Zhuhai Cellulose Fibers Co ltd
Nantong Cellulose Fibers Co Ltd
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Application filed by Kunming Cellulose Fibers Co ltd, Zhuhai Cellulose Fibers Co ltd, Nantong Cellulose Fibers Co Ltd filed Critical Kunming Cellulose Fibers Co ltd
Priority to CN201911399789.1A priority Critical patent/CN111035059A/en
Publication of CN111035059A publication Critical patent/CN111035059A/en
Pending legal-status Critical Current

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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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • 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
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

A low-suction resistance low-filtration cooling composite cigarette filter rod comprises an ultrahigh single denier cellulose acetate tow part; the ultra-high single denier cellulose acetate tow has a single denier of greater than or equal to 10 denier. The cigarette also comprises a structure capable of reducing the smoke temperature of the cigarette, and the structure is connected with the ultrahigh single-denier cellulose acetate tow part; further comprising an empty tube portion engaged with said portion of ultra-high single denier cellulose acetate tow; the empty pipe section is located upstream of the ultra-high single denier cellulose acetate tow section; the cigarette also comprises a structure capable of reducing the smoke temperature of the cigarette, and the structure is positioned between the hollow pipe part and the ultrahigh single-denier cellulose acetate tow part. The structure capable of reducing the smoke temperature of the cigarettes comprises any structural unit capable of reducing the smoke temperature, and comprises a filter stick formed by gathering particulate matters. The composite filter tip of the invention not only can reduce the pressure drop of cigarettes and the adsorption of smoke, but also has the cooling effect and can keep the comfortable feeling of the smoke inlet of the cigarettes.

Description

Low-suction-resistance low-filtration cooling composite cigarette filter tip
Technical Field
The invention belongs to the technical field of cigarettes, and relates to a filter tip structure, in particular to a filter tip structure with cooling, low suction resistance and low filtering functions.
Background
The tobacco shred of the heated cigarette is reconstituted tobacco (tobacco sheet) and is extracted from traditional tobacco leaves, and the release of the heated cigarette product is only about 5 percent of the release of the traditional tobacco. In order to further reduce the adsorptive filtration properties of filters, products meeting their low draw resistance, low filtration requirements must be developed without having a major impact on the sensory quality of the puff. Meanwhile, the distance from the heating end of the novel tobacco product to the mouth end is shorter than that of a common cigarette, so that discomfort such as scorching heat is brought to a smoking consumer, and the requirement of necessarily reducing the temperature of smoke is met.
Chinese patent CN204426675U discloses a composite filter rod with a cavity and low suction resistance, but the processing process is complex and the processing cost is high. Chinese patent CN204444226U discloses a high single denier tow low-resistance filter rod for ramuscule cigarettes, but the resistance is still high and cannot meet the requirements of novel tobacco on low resistance and low filtration.
In view of this, it is an objective urgent need to develop and design a heated cigarette filter rod which can simultaneously meet the requirements of low suction resistance, low filtration and temperature reduction and also can meet the requirement of certain hardness (for example, more than or equal to 80%) of the filter rod.
Disclosure of Invention
The invention aims to provide a low-suction-resistance low-filtration cooling composite cigarette filter tip which can be used for heating cigarettes.
In order to achieve the purpose, the invention adopts the technical scheme that:
a low-suction resistance low-filtration cooling composite cigarette filter rod comprises an ultrahigh single denier cellulose acetate tow part; the ultra-high single denier cellulose acetate tow has a single denier of greater than or equal to 10 denier.
Further, a structure capable of reducing the smoke temperature of a cigarette is included and is partially engaged with the ultra-high single denier cellulose acetate tow.
Optionally, further comprising an empty tube portion joined to the portion of the ultra-high single denier cellulose acetate tow; the empty pipe section is located upstream of the ultra-high single denier cellulose acetate tow section; by upstream is meant the relative position closer to the aerosol-generating article.
Optionally, the hollow tube portion comprises a paper hollow tube or a hollow tube made of acetate tow.
Optionally, the structure capable of reducing the smoke temperature of the cigarette is positioned between the empty tube part and the ultrahigh single-denier cellulose acetate tow part, and is respectively connected with the empty tube part and the ultrahigh single-denier cellulose acetate tow part.
Optionally, the structure capable of reducing the smoke temperature of the cigarette comprises any structural unit capable of reducing the smoke temperature, and can be a plurality of longitudinally extending sheets with 40-90% porosity, non-woven fabrics with gaps, fiber aggregates, hollow tubes or particles.
Optionally, the structure for reducing the smoke temperature of the cigarette is made of more than one of polylactic acid, polyethylene, cellulose acetate, polypropylene, polyurethane, fluorinated ethylene propylene, polyethylene terephthalate, polybutylene succinate, polyvinyl chloride, polyhydroxybutyrate, polycaprolactone, starch-based thermoplastic resin, polyester, cellulose acetate, polyglycolic acid, polyhydroxyalkanoate, gelatin, organic silicon, paper, aluminum foil, ceramic materials, cellulose compounds, graphite powder, carbon, and any material loaded with a phase change energy storage material.
Optionally, the phase change energy storage material includes one or more of polyethylene glycol, calcium chloride hydrate, calcium nitrate hydrate, calcium sulfate hydrate, disodium hydrogen phosphate hydrate, sodium acetate hydrate, potassium sodium tartrate tetrahydrate, lithium acetate hydrate, lauric acid, stearic acid substances, paraffin hydrocarbon mixtures, (1-10) polyglycerol fatty acid ester, long-chain alcohol with 12-18 carbon atoms, sorbitan monostearate, propylene glycol, glycerol, ammonium chloride, ammonium nitrate and ammonium acetate.
Alternatively, the structure for reducing the smoke temperature may be a plurality of longitudinally extending folded sheets of polylactic acid having 40-90% porosity (the same contents as those in the published chinese patent CN 104203015B).
Alternatively, the structure for reducing the smoke temperature may be a cellulose paper coated with a functional film (the same contents as those of the published chinese patent CN 108813713A), a rolled paper containing a polyol (the same contents as those of the published chinese patent CN 207285180U).
Alternatively, the structure for reducing the smoke temperature can be an aggregate of polylactic acid fiber tows (the relevant contents are the same as the published Chinese patents CN207604513U and CN 108968155A).
Alternatively, the structure for reducing the temperature of the flue gas can be particles, non-woven fabrics and hollow tubes with phase change energy storage materials (the related contents are the same as the published Chinese patents CN106690415A, CN108143004A, CN107087811A and CN 20894103U).
Optionally, the structure capable of reducing the smoke temperature of the cigarette is a filter stick formed by gathering particulate matters, and the filter stick comprises a gap through which the smoke of the cigarette can pass.
Optionally, the gap through which the cigarette smoke passes is a three-dimensional, through, non-linear gap.
Optionally, the porosity of the filter stick is 40% -90%.
Optionally, the filter rod comprises base particles, a binder and a wrapping material; contact points are formed among the adhesive particles, the base particles and the base particles, the contact points are physically bonded at multiple positions, and the wrapping material wraps the outer portion of the filter stick so as to form the porous structure.
Optionally, the particulate matter can reduce the temperature of the cigarette smoke and has low adsorption rate on effective components in the cigarette smoke.
Optionally, the filter rod is in the form of a porous substance, and the outer surface of the porous substance is provided with a paper wrapping material.
Optionally, the particles are inactive particles or active particles or inactive particles of the outer coating layer.
Optionally, the inactive particles have a film layer thickness of 0.0-0.2mm, 0-50% of the total particle mass, or 0-50% of the size; the active particles, the thickness of the film layer is 0.001-0.2mm, and the film layer accounts for 0.001-50% of the mass of the whole particles, or 0.001-50% of the size.
Optionally, the particles are particles that adsorb less than 3.0mg/cm3 to nicotine in the smoke aerosol.
Optionally, the inactive particles are organic particles or inorganic particles; the inorganic particles comprise aluminum oxide, zirconium oxide, calcium carbonate, glass beads, silicon dioxide, iron, copper, aluminum, gold, platinum, magnesium silicate spheres or calcium sulfate; the organic particles include cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, sucrose powder, dextrin, lactose, powdered sugar, glucose, mannitol, starch, methyl cellulose, ethyl cellulose, polylactic acid, polyethylene, polypropylene, polyhydroxybutyrate, poly-epsilon-caprolactone, polyglycolic acid, polyhydroxyalkanoate, starch-based thermoplastic resin.
Optionally, the active particles are particles that adsorb 3.0mg/cm3 or more to nicotine in the smoke aerosol.
Optionally, the active particles comprise molecular sieves, activated carbon, diatomaceous earth, zeolites, perlite, ceramics, sepiolite, fuller's earth, ion exchange resins.
Optionally, the membrane layer is made of a film-forming material.
Optionally, the film-forming material comprises cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylcellulose, ethylcellulose, polyvinylpyrrolidone, polyvinyl alcohol diethylamine acetate, styrene maleic acid copolymer, styrene-vinylpyridine copolymer, cellulose acetate phthalate, hydroxypropylmethylcellulose phthalate, cellulose acetate/polyethylene glycol, methylcellulose/polyethylene glycol, carboxymethylcellulose/polyethylene glycol, hydroxypropylmethylcellulose/polyethylene glycol, ethylcellulose/polyethylene glycol or acrylic resin/polyethylene glycol, polylactic acid.
Optionally, the particle shape comprises a sphere, a spheroidal shape, a pie shape, a flake shape, a ribbon shape, an acicular shape, a polygonal shape, a faceted shape, or a random shape.
Optionally, the particles have in at least one dimension: a lower limit of 50 microns, 100 microns, 150 microns, 200 microns, or 250 microns, to an upper limit of 5000 microns, 2000 microns, 1000 microns, 900 microns, or 700 microns.
Optionally, the binder particles comprise: at least one selected from the group consisting of polyethylene, polypropylene, polyolefin, polylactic acid, polyester, polyamide, polyacrylic acid, polyvinyl compound, polytetrafluoroethylene, polyetheretherketone, polyethylene terephthalate, polybutylene terephthalate, polycyclohexylenedimethylene terephthalate, polytrimethylene terephthalate, polyacrylic acid, polymethyl methacrylate, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, styrene-butadiene, styrene-maleic acid, cellulose acetate butyrate, plasticized cellulose plastic, cellulose propionate, ethyl cellulose, any derivative thereof, any copolymer thereof, and any combination thereof.
Optionally, the shape of the binder particles includes spheres, stars, granules, potatoes, irregular shapes, and any combination.
Optionally, the binder particles have in at least one dimension: a lower limit of 5 microns, 10 microns, 50 microns, 100 microns, or 150 microns, to an upper limit of 500 microns, 400 microns, 300 microns, 250 microns, or 200 microns.
Optionally, the binder particles comprise 0.1% to 99% by weight of the entire filter rod.
Optionally, the ultra-high single denier cellulose acetate tow has a single denier of greater than or equal to 20 denier and a total denier of greater than or equal to 27000 denier.
Optionally, the fiber section of the ultrahigh single denier cellulose acetate tow is I-shaped, X-shaped, Y-shaped or R-shaped, or a profiled section tow sprayed from a polygonal spinneret orifice, or a mixture of various sections.
Optionally, the ultra-high single denier cellulose acetate tow nozzle rod pressure drop is from 5Pa/mm to 10 Pa/mm.
Optionally, the composite filter rod has an occluded pressure drop of less than 10 Pa/mm; the circumference of the composite filter rod is (22.0mm-24.0mm) ± 0.5 mm; the temperature drop of the composite filter tip is more than 5 ℃.
Specifically, the invention uses a filter tip made of ultrahigh single denier cellulose acetate tow as a filter tip, and the filter tip and a hollow pipe are made into a two-section type composite filter tip; the novel tobacco product can be further added with a filter stick (the related content is the same as that of the published Chinese patents CN109700071A and CN109700070A, which are not repeated) consisting of aggregated particles as a cooling section, and further added with a plurality of longitudinally extending sheets with 40-90% porosity, non-woven fabrics with gaps, fiber aggregates, hollow tubes and particles (the related content is the same as that of the published Chinese patents CN104203015B, CN108813713A, CN207285180U, CN207604513U, CN108968155A, CN106690415A, CN108143004A, CN107087811A and CN 20894103U) as a cooling section, and the three-section composite filter stick and the hollow tubes are made into a three-section composite filter stick to meet the requirements of low resistance to suction, low filtration and cooling of the novel tobacco product.
The invention relates to a composite filter tip, which comprises a low-sealing-pressure-drop filter tip made of an ultrahigh single-denier acetate fiber tow (wherein the single denier of the ultrahigh single-denier tow is more than or equal to 10 denier), a cellulose acetate microsphere filter stick and an empty pipe. The ultra-high single denier tow comprises a single denier of more than or equal to 20 denier, a total denier of more than or equal to 27000 denier, including 22/32000, 20/27000 and 23/28000, and the cross section is Y-shaped and X-shaped, but not limited to the above-mentioned ones. The pressure drop of the ultrahigh single denier acetate fiber tow nozzle rod is 5-10Pa/mm, and the circumference (22.0-24.0mm) ± 0.5 mm. The temperature reduction section of the microsphere filter stick is of a columnar structure consisting of cellulose acetate microspheres, and the circumference of the temperature reduction section can be adjusted according to the circumference of the filter stick (related contents are the same as those of the published Chinese patents CN109700071A and CN109700070A, and are not repeated herein). The hollow pipe comprises a paper hollow pipe and a hollow pipe made of acetate fiber tows, but is not limited to the paper hollow pipe and the hollow pipe.
Due to the adoption of the technical scheme, the beneficial effects obtained by the invention comprise that: the prepared composite filter tip not only can reduce pressure drop and adsorption, but also has the effect of cooling, and can keep the comfortable feeling of the tobacco products when entering the mouth.
Drawings
FIG. 1 is a schematic structural view of a composite cigarette filter rod of embodiment 1 of the present invention, in which 1-a portion of an ultra-high single denier cellulose acetate tow; 2-filter tip forming paper; 3-empty pipe section.
FIG. 2 is a schematic structural view of a composite cigarette filter rod of example 2 of the present invention, in which a 1-ultra high single denier cellulose acetate tow segment; 2-filter tip forming paper; 3-an empty pipe section; 4-a structure capable of reducing the smoke temperature of the cigarette.
FIG. 3 is a schematic structural view of a composite cigarette filter rod of example 3 of the present invention, in which a 1-ultra high single denier cellulose acetate tow segment; 2-filter tip forming paper; 3-an empty pipe section; 4-a structure capable of reducing the smoke temperature of the cigarette.
FIG. 4 is a schematic view of an embodiment of the "structure capable of reducing the smoke temperature of cigarettes" ("microsphere filter stick cooling section") according to the invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
According to the invention, the ultrahigh single denier acetate fiber tow (single denier is more than or equal to 20 denier, the current highest single denier tow specification) can be produced, the filter rod with the closed pressure drop of 5-10Pa/mm (taking 22.0mm circumference and 24.0mm circumference as examples and 132mm length as examples) is produced, and the composite filter rod is obtained by the composite acetate fiber microsphere filter rod (taking 23.0mm circumference as examples, the suction resistance is 7.2Pa/mm and the porosity is 70 percent), so that the requirements of low suction resistance, low filtration and temperature reduction can be simultaneously met, and the hardness of the filter rod can be more than or equal to 80 percent.
Example 1
As shown in fig. 1, a low-suction-resistance low-filtration cooling composite cigarette filter rod comprises an ultrahigh single-denier cellulose acetate tow part 1, and further comprises an empty pipe part 3 (adopting a hollow cellulose acetate filter rod) connected with the ultrahigh single-denier cellulose acetate tow part, wherein the empty pipe part 3 is positioned at the upstream of the ultrahigh single-denier cellulose acetate tow part 1; by upstream is meant a relative position closer to the aerosol-generating article (not shown in the figures for simplicity). The ultra-high mono-denier cellulose acetate tow part 1 and the hollow pipe part 3 are wrapped externally by a filter plug wrap 2.
An X-shaped monofilament section tow with the specification of 20/27000 is selected to be opened in an opening forming machine KDF2/AF2(Hauni) at the speed of 120-200 m/min to prepare the ultrahigh single-denier cellulose acetate tow nozzle rod, the index is 23.8mm of the circumference, the hardness is 89%, the pressure drop is 6.4Pa/mm, and the application amount of the triglycolate is 5.3%.
And combining an ultrahigh single-denier filter tip rod with the length of 25mm with a hollow acetate fiber rod with the length of 8mm and the inner diameter of 3.3mm to obtain a composite filter rod, and preparing a first sample by rolling and connecting a heating cigarette smoking section with the length of 12 mm.
And (3) taking a Y-shaped tow filter rod (pressure drop of 29.4Pa/mm) with the specification of 3.0/35000 as a comparison, combining a comparison filter rod with the length of 25mm and a hollow acetate fiber rod with the length of 8mm and the inner diameter of 3.3mm to obtain a composite filter rod, and preparing a comparison I by rolling and connecting a heating cigarette fuming section with the diameter of 12 mm.
The test of the suction resistance and the suction temperature (Canadian deep suction method, 4 parallel samples) meets the requirements of low suction resistance, low filtration and temperature reduction.
Figure BDA0002347206230000061
The comparison between the control I and the sample I shows that the suction resistance of the sample I is obviously lower than that of the control I, the release amount of nicotine in smoke is increased, and the release amount of total particulate matters in smoke is increased. Meanwhile, the temperature of each smoke of the sample I is lower than that of the control I.
Example 2
As shown in figure 2, the composite cigarette filter rod with low suction resistance, low filtration and temperature reduction comprises an ultrahigh single denier cellulose acetate tow part 1 and a hollow pipe part 3 (a hollow cellulose acetate filter rod is adopted); an empty pipe section 3 is located upstream of the ultra-high single denier cellulose acetate tow section 1; by upstream is meant a relative position closer to the aerosol-generating article (not shown in the figures for simplicity). Further, the cigarette smoke temperature reducing device comprises a structure 4 (a polylactic acid film temperature reducing section) capable of reducing the cigarette smoke temperature, wherein the structure 4 capable of reducing the cigarette smoke temperature is positioned between the hollow pipe part 3 and the ultrahigh single denier cellulose acetate tow part 1 and is respectively connected with the hollow pipe part 3 and the ultrahigh single denier cellulose acetate tow part 1.
The outside is wrapped by a filter rod forming paper 2, wherein the ultrahigh single denier cellulose acetate tow part 1, the hollow pipe part 3 and a structure 4 capable of reducing the smoke temperature of the cigarette are wrapped.
The Y-shaped section tows with the specification of 23/28000 are selected to be made into tows with the circumference of 22.0mm, the hardness of 96 percent and the pressure drop of 9.6Pa/mm in an opening and forming machine KDF2/AF2(Hauni), and the content of the glycerol triacetate is 12 percent. A second sample was prepared from a 10mm ultra-high single denier cellulose acetate filter rod, a PLA film folded cooling section having a length of 15 mm/porosity of 72%/thickness of about 50 microns, a cellulose acetate hollow tube having a length of 8 mm/inner diameter of 3.3mm, and a heated cigarette smoking section having a length of 12 mm.
An acetate filter rod (pressure drop 16.5Pa/mm) prepared from 8.0/30000 specification Y-shaped section tows is used as a control, a 10mm control acetate filter rod, a PLA film folding cooling section with the length of 15 mm/porosity of 72%/thickness of about 50 microns, an acetate hollow tube with the length of 8 mm/inner diameter of 3.3mm, and a heated cigarette smoking section with the length of 12mm are used as a control.
The test of the suction resistance and the suction temperature (Canadian deep suction method, 4 parallel samples) meets the requirements of low suction resistance, temperature reduction and low filtration.
Figure BDA0002347206230000071
The comparison between the second sample and the second sample shows that the second sample has low cigarette resistance, larger nicotine release amount and smoke amount and better cooling effect.
Example 3
As shown in fig. 3, a low-suction-resistance low-filtration cooling composite cigarette filter rod comprises an ultrahigh single denier cellulose acetate tow part 1, a hollow pipe part 3 (adopting a hollow cellulose acetate filter rod), wherein the hollow pipe part 3 is positioned at the upstream of the ultrahigh single denier cellulose acetate tow part 1; by upstream is meant a relative position closer to the aerosol-generating article (not shown in the figures for simplicity). Further, the cigarette smoke temperature reducing device comprises a structure 4 (a microsphere filter stick temperature reducing section) capable of reducing the cigarette smoke temperature, wherein the structure 4 capable of reducing the cigarette smoke temperature is positioned between the hollow pipe part 3 and the ultrahigh single denier cellulose acetate tow part 1 and is respectively connected with the hollow pipe part 3 and the ultrahigh single denier cellulose acetate tow part 1.
The outside is wrapped by a filter rod forming paper 2, wherein the ultrahigh single denier cellulose acetate tow part 1, the hollow pipe part 3 and a structure 4 capable of reducing the smoke temperature of the cigarette are wrapped.
The tow with 22/32000Y-shaped section is selected to be opened into a rod in an opening forming machine KDF2/AF2(Hauni) at the speed of 120-200 m/min, the application amount of the triglyceride is 12 percent, the circumference is 24.1mm, the hardness is 88 percent, and the pressure drop is 5.7 Pa/mm. And (3) mixing an ultrahigh single-denier filter rod with the length of 5mm with a cellulose acetate microsphere filter rod with the length of 15mm (the pressure drop is 7.2Pa/mm, the porosity is 70%), an acetate fiber hollow tube with the length of 8 mm/inner diameter of 3.3mm and a heated cigarette smoking section with the length of 12mm to obtain a third sample. The cellulose acetate microsphere filter stick is an implementation mode of the structure capable of reducing the smoke temperature of the cigarette or the temperature reduction section of the microsphere filter stick.
A sample 4 was obtained by mixing a 10 mm-long ultrahigh single denier filter rod with a 15 mm-long cellulose acetate microsphere filter rod (pressure drop 7.2Pa/mm, porosity 70%), a 8 mm-long/3.3 mm-inner-diameter cellulose acetate hollow tube, and a 12 mm-long heated cigarette smoking segment.
A sample 5 was obtained by mixing an ultrahigh single denier filter rod of 15mm in length with a 10mm cellulose acetate microsphere filter rod (pressure drop 7.2Pa/mm, porosity 70%), an 8mm in length/3.3 mm in inner diameter cellulose acetate hollow tube, and a heated cigarette smoking segment of 12mm in length.
In contrast to the control of example 1, the cigarette smoke resistance, nicotine release and puff-by-puff temperature meet the low filtration and cooling requirements.
The analytical data are as follows:
Figure BDA0002347206230000081
through comparison of the comparison I with the comparison III, the comparison IV and the comparison V, the flue gas temperature of each port of the comparison III, the comparison IV and the comparison V is lower than that of the comparison I. Furthermore, the resistance to draw of samples three, four and five was significantly lower than that of control one, and samples three, four and five had greater nicotine and total particulate matter release than control one.
The contents of the "structure capable of reducing the smoke temperature of the cigarette" or the "microsphere filter rod temperature reduction section" (hereinafter referred to as "porous filter rod") in the invention are the same as those of the published Chinese patents CN109700071A and CN109700070A, and for the sake of brevity, one of the embodiments is provided as follows for reference:
(1) aspect of the entirety
As shown in figure 4, the porous filter stick is a porous cylindrical structure, the circumference of the filter stick is 22.08mm, and the closed suction resistance of the filter stick is 20mmH2O (120mm length), the void fraction was 72%.
(2) Structural part
Furthermore, the porous filter stick is in a cylindrical structure formed by physically bonding the high-molecular adhesive particles wrapped by the wrap paper and the cellulose acetate spherical particles with the surface coated by the coating layer.
The porous filter stick is prepared from 75% of cellulose acetate spherical particles with the average particle size of 1.2mm and the surfaces of which are coated with polyethylene glycol/hydroxypropyl methyl cellulose film layers and 25% of ultrahigh molecular polyethylene adhesive with the particle size of 500 microns. The wrapping material is formed paper with the gram weight of 20g and the thickness of 0.08 mm.
(3) Method for preparing granules used
The inner layer of the basic particle is prepared by cellulose diacetate through an extrusion rounding method, and the outer coating polyethylene glycol/hydroxypropyl methyl cellulose film layer is prepared by fluidized bed coating. The coating film layer accounts for 12 percent of the mass of the whole granule. The thickness of the film layer was 0.04 μm.
The preparation method comprises the following steps:
industrial cellulose diacetate was wet ground to a powder with an average particle size of 48 microns. Weighing 1 kg of the above ground powder sample, adding 1.18 kg of 7.8% hydroxypropyl methylcellulose (HPMC) aqueous solution, and fully stirring and uniformly mixing on a laboratory wet mixer to obtain a wet material. And (3) carrying out wet extrusion granulation on the prepared soft wet material on a wet extruder (the aperture of a distribution plate is 1.0mm) to obtain a cylindrical strip-shaped object. The extruder was fed at 23rpm and the extrusion speed was 26 rpm. And (3) rounding and forming the cylindrical strip-shaped object on a rounding machine to obtain spherical wet particles. The rolling circle condition is as follows: the spheronizer was first run at 600rpm for 1.5 minutes and then at 500rpm for 3 minutes. Drying the spherical wet particles at the temperature of 105-120 ℃ for 5-6 hours, and removing moisture to obtain dried particles which can be used as inner-layer particles of the cellulose acetate spherical particles.
And (3) coating the dried inner-layer particles by adopting fluidized bed bottom spraying, and controlling the using amount of the coating liquid to ensure that the coating film layer accounts for 12% of the final particles by mass. After coating, drying the granules for 15 minutes at the air inlet temperature of 60 ℃, drying the moisture on the surfaces of the granules, taking out the dried granules, and sieving the dried granules with 14-mesh and 20-mesh sieves to obtain the cooling granules with the required particle size. The bulk density of the granules was tested to be 0.50 g/mL. The concentration of the coating solution used was 5.25%. The main components are hydroxypropyl methylcellulose and polyethylene glycol 6000, and the solvent is water. Wherein the proportion of polyethylene glycol in the main component is 23.3%. The fluidized bed coating operating conditions were: air inlet temperature: 60 ℃, material temperature: 37.5-38.5 ℃, the diameter of a spray gun nozzle is 1.0mm, the atomization pressure is 0.17MPa, and the flow rate of the peristaltic pump liquid is 10 r/min.
(4) Method for preparing porous filter stick of the invention by using the particles
The porous filter rods were made from GUR2105 resin from Ticona, LLC and cellulose acetate spherical particles prepared by the foregoing method.
1) Mixing 25% by weight of GUR2105 resin and 75% by weight of cellulose acetate spherical particles prepared by the foregoing method;
2) and subsequently filling the mold with the heated mixture without applying pressure to the mixture;
3) the mould was then heated to 200 ℃ for 40 minutes;
4) then taking out the porous filter stick from the die, cooling the porous filter stick, and wrapping the filter stick by using wrap paper with the gram weight of 20g and the thickness of 0.08 mm;
5) the filter rod is cut into small segments of equal length, for example 120 mm.
The porous filter rod had a percent porosity of 72% and a closed draw resistance of 20mm h2O (120mm length).
(5) Application of porous filter stick
And cutting the prepared porous filter stick into 18mm small sections, wherein the small sections have the same circumference as the porous filter stick, the lengths of the hollow cellulose acetate tube are respectively 8mm and the length of the hollow cellulose acetate tube are respectively 7mm, and the hollow cellulose acetate tube and the cellulose acetate filter stick are prepared into a ternary composite filter stick through a filter stick compounding process, wherein the middle section of the ternary composite filter stick is the rapid cooling porous filter stick based on the film layer particles. And then the novel heating non-combustion cigarette is prepared by a cigarette twisting and connecting process and a tobacco material aerosol atomization unit (the circumference is 22.08mm) with the length of 12 mm.
Simulated smoking was performed according to the cigarette smoking model specified in the national standard GB/T19609-2004 using the Canadian deep draw mode (HCI) with the following smoking parameters: aspiration volume 55mL/L, aspiration frequency 30s, aspiration duration 2 s. And detecting the temperature of the center of the cigarette filter stick at a position 5mm away from the mouth end when the cigarette is smoked by using a thermocouple temperature detector.
By comparing with the cellulose acetate filter stick, the cooling effect of the porous filter stick can be clearly seen. The contrast filter stick adopts 22Y/32000 diacetate fiber tows, and is processed by a filter stick forming machine to prepare an acetate fiber base stick with the length of 108mm, the circumference of 22.89mm and the suction resistance of 61.3mmH2And O. The base rod is cut into filter sticks with the same length of 18mm to replace 1 in an IQOS cigarette filter stickGathering a PLA film by 8mm to prepare a heating non-combustion control cigarette containing a cellulose acetate filter stick, and adopting the same smoking and smoke temperature testing method as the cigarette containing the porous filter stick.
The smoke temperature analysis results of this example were compared to a control cigarette containing cellulose acetate tow, and the smoke temperature of each puff from this example was lower than that of the control cigarette. Compared with the smoke analysis result of the cigarette containing the cellulose acetate tow control, the total particulate matters of the mainstream smoke are far higher than that of the cigarette containing the cellulose acetate tow filter stick, and the smoke quantity is higher.
The foregoing description and description of the embodiments are provided to facilitate understanding and application of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications can be made to these teachings and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above description and the description of the embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (32)

1. The utility model provides a compound cigarette filter rod of low filtration cooling of low suction resistance which characterized in that: the filter rod comprises an ultrahigh single denier cellulose acetate tow part; the ultra-high single denier cellulose acetate tow has a single denier of greater than or equal to 10 denier.
2. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 1, characterized in that: also included is a structure capable of reducing the smoke temperature of a cigarette, which is joined to the portion of the ultrahigh single denier cellulose acetate tow.
3. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 1, characterized in that: further comprising an empty tube portion engaged with said portion of ultra-high single denier cellulose acetate tow; the empty pipe section is located upstream of the ultra-high single denier cellulose acetate tow section; by upstream is meant the relative position closer to the aerosol-generating article.
4. The empty pipe section according to claim 3, wherein: the hollow pipe part comprises a paper hollow pipe or a hollow pipe made of acetate fiber tows.
5. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 3, characterized in that: the cigarette smoke temperature reducing structure is located between the hollow pipe part and the ultrahigh single-denier cellulose acetate tow part and is respectively connected with the hollow pipe part and the ultrahigh single-denier cellulose acetate tow part.
6. The low-suction-resistance low-filtration cooling composite cigarette filter rod according to claim 2 or 5, characterized in that: the structure capable of reducing the smoke temperature of the cigarette comprises any structural unit capable of reducing the smoke temperature, and can be a plurality of longitudinally extending sheets with 40-90% of porosity, non-woven fabrics with gaps, fiber aggregates, hollow tubes or particles.
7. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 2, characterized in that: the structure capable of reducing the smoke temperature of the cigarette is characterized in that the used materials comprise more than one of polylactic acid, polyethylene, cellulose acetate, polypropylene, polyurethane, fluorinated ethylene propylene, polyethylene terephthalate, polybutylene succinate, polyvinyl chloride, polyhydroxybutyrate, polycaprolactone, starch-based thermoplastic resin, polyester, cellulose acetate, polyglycolic acid, polyhydroxyalkanoate, gelatin, organic silicon, paper, aluminum foil, ceramic materials, cellulose compounds, graphite powder, carbon and any material loaded with phase change energy storage materials.
8. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 7, wherein: the phase change energy storage material comprises more than one of polyethylene glycol, calcium chloride hydrate, calcium nitrate hydrate, calcium sulfate hydrate, disodium hydrogen phosphate hydrate, sodium acetate hydrate, sodium potassium tartrate tetrahydrate, lithium acetate hydrate, lauric acid, stearic acid substances, paraffin hydrocarbon mixtures, (1-10) polyglycerol fatty acid ester, long-chain alcohol with 12-18 carbon atoms, sorbitan monostearate, propylene glycol, glycerol, ammonium chloride, ammonium nitrate and ammonium acetate.
9. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 2, characterized in that: the structure capable of reducing the smoke temperature of the cigarettes is a filter stick formed by gathering particulate matters, and the filter stick comprises gaps through which the smoke of the cigarettes can pass.
10. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the gap for cigarette smoke to pass through is a three-dimensional, through and nonlinear gap.
11. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the porosity of the filter stick is 40% -90%.
12. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the filter stick comprises base particles, an adhesive and a wrapping material; contact points are formed among the adhesive particles, the base particles and the base particles, the contact points are physically bonded at multiple positions, and the wrapping material wraps the outer portion of the filter stick so as to form the porous structure.
13. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the particles can reduce the temperature of the cigarette smoke and have low adsorption rate to effective components in the cigarette smoke.
14. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the filter stick is in a porous substance shape, and a paper wrapping material is arranged on the outer surface of the porous substance.
15. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the particles are inactive particles or active particles or inactive particles of the outer coating layer.
16. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the thickness of the film layer of the inactive particles is 0.0-0.2mm, and accounts for 0-50% of the mass of the whole particles, or 0-50% of the size; the active particles, the thickness of the film layer is 0.001-0.2mm, and the film layer accounts for 0.001-50% of the mass of the whole particles, or 0.001-50% of the size.
17. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 9, wherein: the particles are less than 3.0mg/cm for absorbing nicotine in the smoke aerosol3The particles of (1).
18. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the inactive particles are organic particles or inorganic particles; the inorganic particles comprise aluminum oxide, zirconium oxide, calcium carbonate, glass beads, silicon dioxide, iron, copper, aluminum, gold, platinum, magnesium silicate spheres or calcium sulfate; the organic particles include cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, sucrose powder, dextrin, lactose, powdered sugar, glucose, mannitol, starch, methyl cellulose, ethyl cellulose, polylactic acid, polyethylene, polypropylene, polyhydroxybutyrate, poly-epsilon-caprolactone, polyglycolic acid, polyhydroxyalkanoate, starch-based thermoplastic resin.
19. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the active particles have large adsorption to nicotine in the smoke aerosolNot more than 3.0mg/cm3The particles of (1).
20. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the active particles comprise molecular sieves, active carbon, diatomite, zeolite, perlite, ceramic, sepiolite, bleaching earth and ion exchange resin.
21. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the membrane layer is made of a film forming material.
22. The low draw resistance, low filtration cooling composite cigarette filter rod of claim 21, wherein: the film-forming material comprises cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol diethylamine acetate, styrene maleic acid copolymer, styrene-vinylpyridine copolymer, cellulose acetate phthalate, hydroxypropyl methyl cellulose phthalate, cellulose acetate/polyethylene glycol, methyl cellulose/polyethylene glycol, carboxymethyl cellulose/polyethylene glycol, hydroxypropyl methyl cellulose/polyethylene glycol, ethyl cellulose/polyethylene glycol or acrylic resin/polyethylene glycol, and polylactic acid.
23. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the particle shape includes spherical, spheroidal, pie, flake, ribbon, needle, polygonal, faceted, or random.
24. The low draw resistance, low filtration and cooling composite cigarette filter rod according to claim 15, wherein: the particles have in at least one dimension: a lower limit of 50 microns, 100 microns, 150 microns, 200 microns, or 250 microns, to an upper limit of 5000 microns, 2000 microns, 1000 microns, 900 microns, or 700 microns.
25. The low draw resistance, low filtration cooling composite cigarette filter rod of claim 12, wherein: the binder particles comprise: at least one selected from the group consisting of polyethylene, polypropylene, polyolefin, polylactic acid, polyester, polyamide, polyacrylic acid, polyvinyl compound, polytetrafluoroethylene, polyetheretherketone, polyethylene terephthalate, polybutylene terephthalate, polycyclohexylenedimethylene terephthalate, polytrimethylene terephthalate, polyacrylic acid, polymethyl methacrylate, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, styrene-butadiene, styrene-maleic acid, cellulose acetate butyrate, plasticized cellulose plastic, cellulose propionate, ethyl cellulose, any derivative thereof, any copolymer thereof, and any combination thereof.
26. The low draw resistance, low filtration cooling composite cigarette filter rod of claim 12, wherein: the shape of the binder particles includes spheres, stars, granules, potatoes, irregular shapes, and any combination.
27. The low draw resistance, low filtration cooling composite cigarette filter rod of claim 12, wherein: the binder particles have in at least one dimension: a lower limit of 5 microns, 10 microns, 50 microns, 100 microns, or 150 microns, to an upper limit of 500 microns, 400 microns, 300 microns, 250 microns, or 200 microns.
28. The low draw resistance, low filtration cooling composite cigarette filter rod of claim 12, wherein: the adhesive particles account for 0.1 to 99 percent of the weight of the whole filter stick.
29. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 1, characterized in that: the ultra-high single denier cellulose acetate tow has a single denier of greater than or equal to 20 denier and a total denier of greater than or equal to 27000 denier.
30. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 1, characterized in that: the fiber section of the ultrahigh single-denier cellulose acetate tow is I-shaped, X-shaped, Y-shaped or R-shaped, or the tow with a special-shaped section sprayed from a polygonal spinneret orifice, or the mixture of various sections.
31. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 1, characterized in that: the pressure drop of the ultrahigh single-denier cellulose acetate tow nozzle rod is 5Pa/mm-10 Pa/mm.
32. The low-draw-resistance low-filtration cooling composite cigarette filter rod according to claim 1, characterized in that: the closed pressure drop of the composite filter rod is less than 10 Pa/mm; the circumference of the composite filter rod is (22.0mm-24.0mm) ± 0.5 mm; the temperature drop of the composite filter tip is more than 5 ℃.
CN201911399789.1A 2019-12-30 2019-12-30 Low-suction-resistance low-filtration cooling composite cigarette filter tip Pending CN111035059A (en)

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CN111904023A (en) * 2020-07-30 2020-11-10 湖北中烟工业有限责任公司 Cigarette filter stick
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