WO2023106643A1 - Filtre de cigarette comprenant une étoupe de lyocell, et son procédé de fabrication - Google Patents

Filtre de cigarette comprenant une étoupe de lyocell, et son procédé de fabrication Download PDF

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Publication number
WO2023106643A1
WO2023106643A1 PCT/KR2022/017171 KR2022017171W WO2023106643A1 WO 2023106643 A1 WO2023106643 A1 WO 2023106643A1 KR 2022017171 W KR2022017171 W KR 2022017171W WO 2023106643 A1 WO2023106643 A1 WO 2023106643A1
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Prior art keywords
weight
parts
lyocell
cigarette filter
binder
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Application number
PCT/KR2022/017171
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English (en)
Korean (ko)
Inventor
양진철
김수호
마경배
정봉수
하성훈
정종철
진상우
이정훈
서승동
황영남
Original Assignee
주식회사 케이티앤지
코오롱인더스트리 주식회사
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Publication of WO2023106643A1 publication Critical patent/WO2023106643A1/fr

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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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • 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
    • 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

Definitions

  • the present invention relates to a cigarette filter comprising lyocell tow.
  • the present invention includes a lyocell tow made of a plurality of lyocell fibers, a binder binding the lyocell fibers to each other, and a solvent dispersed in the inner space of a cigarette filter including the lyocell tow, wherein the solvent is It relates to a cigarette filter containing alcohol.
  • leaf tobacco leaf tobacco
  • processed tobacco leaf is cut to prepare a cut tobacco leaf, and the tobacco leaf is rolled with cigarette paper to produce a cigarette without a filter.
  • a filter is attached to the filterless cigarette as needed.
  • Cigarette paper can be made of hemp, wood pulp, etc., and is required to maintain combustibility and taste of tobacco when burned.
  • the cigarette filter may include activated carbon, a flavor material, and the like, may be composed of a monofilter or a multi-filter, and is surrounded by a cigarette filter wrapping paper.
  • the tobacco cut sheath and the tobacco filter are connected by tipping paper, and the tipping paper may include fine holes.
  • a general cigarette filter uses cellulose acetate tow obtained by extracting cellulose from wood pulp and acetylating it. For example, unlike cellulose acetate, development of tow using lyocell fibers in which cellulose itself is fibrous is in progress.
  • a method of improving the hardness of a filter includes a method using a curing agent and a method using a plasticizer.
  • the method of using the curing agent is a method of imparting hardness to a filter by bonding fiber strands using a material having a binder property, and making the filter hard.
  • the method of using the plasticizer is a method of partially dissolving or plasticizing fibers themselves using a specific material to form junctions between fibers and then plasticizing them.
  • plasticizers Triacetin, Triethyl Citrate
  • lyocell fibers do not currently have plasticizers, it is essential to develop a hardness enhancer suitable for lyocell fibers.
  • the present inventors recognized the technical problems of the above-mentioned lyocell fiber material and completed the present invention after continuous research on lyocell tow with excellent functionality suitable for application as a cigarette filter.
  • Patent Document 1 Republic of Korea Patent Publication No. 10-2015-0116612
  • a cigarette filter containing lyocell tow as an eco-friendly material, it is intended to provide a cigarette filter that can solve material problems such as fairness during processing to secure the hardness and hardness that lyocell tow basically has.
  • the present invention includes a lyocell tow made of a plurality of lyocell fibers, a binder binding the lyocell fibers to each other, and a solvent dispersed in the inner space of a cigarette filter including the lyocell tow, wherein the solvent contains a polyhydric alcohol It provides a cigarette filter comprising a.
  • the polyhydric alcohol is a diol having a C1 to C4 alkylene group.
  • the polyhydric alcohol is included in 0.5 parts by weight to 25 parts by weight based on 100 parts by weight of lyocell tow.
  • the binder is hydroxy propyl methyl cellulose, hydroxy propyl cellulose, poly vinyl alcohol, ethylene vinyl acetate, poly vinyl acetate, poly vinyl pyrrolidone, polyester or a combination thereof.
  • the binder is included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of lyocell tow.
  • the solvent further includes a monohydric alcohol such as methanol, ethanol, propanol, or a combination thereof.
  • the present invention provides a manufacturing method of the above-described cigarette filter, the manufacturing method comprising the steps of preparing a lyocell tow using a plurality of lyocell fibers, preparing a binder solution by mixing a binder and a solvent, the lyocell Spraying a binder solution on the tow and storing it so that the lyocell fibers are bonded to each other by the binder, and manufacturing a cigarette filter by surrounding the lyocell tow to which the lyocell fibers are bound by the binder with wrapping paper .
  • the polyhydric alcohol is included in 5 parts by weight to 50 parts by weight based on 100 parts by weight of the binder solution.
  • the solvent further includes a monohydric alcohol.
  • the monohydric alcohol is methanol, ethanol, propanol or a combination thereof.
  • the monohydric alcohol is included in 5 parts by weight to 60 parts by weight based on 100 parts by weight of the binder solution.
  • the binder solution is sprayed on the lyocell tow in an amount of 5 parts by weight to 30 parts by weight based on 100 parts by weight of the lyocell tow.
  • the cigarette filter according to one embodiment of the present invention includes lyocell tow, which is an eco-friendly material, but overcomes the material problems of conventional lyocell tow and has excellent hardness.
  • the cigarette filter according to one embodiment of the present invention can achieve the above-described excellent hardness without drying at a high temperature for a long time, thereby increasing fairness in manufacturing the cigarette filter and increasing productivity. can improve
  • a cigarette filter according to one embodiment of the present invention includes a polyhydric alcohol, and the polyhydric alcohol not only helps the binder to improve the hardness of the cigarette filter, but also serves as a release agent during roll processing in the manufacturing process of the cigarette filter, thereby reducing the product It can reduce defects and improve workability.
  • FIG. 1 is a diagram showing a schematic configuration of a smoking article according to one embodiment of the present invention.
  • first, second, A, B, (a), and (b) may be used in describing the components of the specific example. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the corresponding component is not limited by the term.
  • the term "smoking article” may refer to an object capable of generating aerosol, such as cigarettes (cigarettes) and cigars.
  • the smoking article may include an aerosol-generating material or an aerosol-forming substrate.
  • the smoking article may include a solid material based on tobacco raw materials such as leaf tobacco, cut filler, and reconstituted tobacco. Smoking substances may contain volatile compounds.
  • the smoking article may include several segments, each having a functional function, such segments as "... It is marked as “Part”.
  • the smoking article may be not only a combustion type cigarette, but also a heating type cigarette used with an aerosol generating device (not shown) such as an electronic cigarette device.
  • upstream and downstream are terms used to denote the relative positions of the segments constituting the smoking article with respect to the direction in which the user draws air using the smoking article.
  • the smoking article includes an upstream end (ie, a portion through which air enters) and an opposite downstream end (ie, a portion through which air exits). When using the smoking article, the user may bite the downstream end of the smoking article.
  • the downstream end is located downstream of the upstream end, while the term “end” may also be described as “end”.
  • the present invention relates to a cigarette filter that can be applied to a smoking article.
  • the cigarette filter includes a lyocell tow made of a plurality of lyocell fibers, and the lyocell fibers It includes a binder binding to each other, and a solvent dispersed in the inner space of the cigarette filter including the lyocell tow.
  • the lyocell fiber is an eco-friendly fiber made of cellulose extracted from wood pulp.
  • the lyocell tow refers to a bundle formed by cross-linking adjacent lyocell fibers.
  • the lyocell fiber may have a fineness of 1.0 denier to 12.0 denier.
  • the lyocell fiber bundle constituting the lyocell tow may have a fineness of 15,000 denier to 45,000 denier.
  • a binder suitable for the lyocell fibers with a solvent to prepare a binder solution, and spraying the binder solution on the lyocell tow, the lyocell tow can form a structure having a certain level of hardness or more. Even after a long period of time after spraying, the binder and some solvent components do not leak out and can be included in the final cigarette filter.
  • the binder included in the cigarette filter binds the lyocell fibers together to impart a certain level of hardness to the lyocell tow.
  • the binder is a material suitable for application to the lyocell fibers and may be freely used as long as it is a general material known in the art.
  • the binder is hydroxyl propyl methyl cellulose (HPMC), hydroxy propyl cellulose (HPC), poly vinyl alcohol (poly vinyl alcohol, PVA), ethylene Vinyl acetate (ethylene vinyl acetate, EVA), poly vinyl acetate (PVAc), poly vinyl pyrrolidone (PVP), polyester, or a combination thereof may be used, specifically,
  • the binder may be hydroxypropyl methyl cellulose, polyester, or a combination thereof.
  • the polyester is a synthetic resin made by reacting a polyhydric organic acid with a polyhydric alcohol, and has appropriate resistance to water and various compounds.
  • the polyester is a copolymer of an aromatic monomer and an aliphatic monomer.
  • the aromatic monomer adds structural stability to the polyester, and the aliphatic monomer adds structural flexibility to the polyester, so that the polyester containing the aromatic monomer and the aliphatic monomer easily adheres to other components such as Lyocell fibers as a binder. Functionality can be added.
  • the aromatic monomer may be a polyhydric organic acid or a polyhydric alcohol, and similarly, the aliphatic monomer may also be a polyhydric organic acid or a polyhydric alcohol.
  • the aromatic monomer is a dicarboxylic acid having a C5 to C12 arylene group or heteroarylene group.
  • the dicarboxylic acid having a C5 to C12 arylene group or heteroarylene group may be phthalic acid, terephthalic acid, or isophthalic acid.
  • the aliphatic monomer is a diol having a C1 to C6 alkylene group, a dicarboxylic acid having a C2 to C12 alkylene group, or a combination thereof.
  • the diol having a C1 to C6 alkylene group is ethylene glycol
  • the dicarboxylic acid having a C2 to C12 alkylene group is sebacic acid.
  • polyester in that a carboxylic acid group and a hydroxy group can be formed by a condensation reaction at a ratio of 1: 1, as a monomer having a carboxylic acid group, the above-mentioned C5 to C12 arylene group or heteroarylene group
  • a dicarboxylic acid having a dicarboxylic acid, a dicarboxylic acid having a C2 to C12 alkylene group, or a combination thereof may be used, and as a monomer having a hydroxyl group, a diol having a C1 to C6 alkylene group may be used.
  • the arylene group, heteroarylene group or alkylene group exists in a substituted or unsubstituted state, and in the case of a substituted state, a C1 to C4 alkyl group, a C1 to C4 alkyl group in the main chain of the arylene group, heteroarylene group or alkylene group
  • the binder may be applied to the lyocell tow in the form of a binder solution together with a solvent, and the binder does not flow out even when the lyocell tow is dried or left for a long time after application, and is located between the lyocell fibers to increase the hardness of the lyocell tow. improve According to one embodiment of the present invention, the binder is included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of lyocell tow.
  • the content of the binder is 0.1 parts by weight or more, 0.2 parts by weight or more, 0.3 parts by weight or more, 0.4 parts by weight or more, 5 parts by weight or less, 4.5 parts by weight or less, 4 parts by weight or less, 3.5 parts by weight or less, 3 parts by weight or less 2.5 parts by weight or less, and may be 0.1 parts by weight to 5 parts by weight, 0.2 parts by weight to 4 parts by weight, or 0.3 parts by weight to 3 parts by weight.
  • the binder is applied within the above range, the hardness can be raised to an appropriate level without deteriorating the function as a basic filter of lyocell tow.
  • the solvent contained in the cigarette filter is basically included in the binder solution to disperse the binder, and some of the solvent is removed when the binder solution is sprayed on the lyocell tow and dried or left for a long time.
  • the unremoved solvent is located as a component inside the cigarette filter containing the lyocell tow and imparts additional functionality to the cigarette filter.
  • the solvent remaining in the cigarette filter includes polyhydric alcohol.
  • polyhydric alcohol means a compound containing two or more hydroxyl groups.
  • the polyhydric alcohol serves as a release agent when processed into a machine roll or the like to apply lyocell tow to a cigarette filter.
  • the lyocell tow is processed into a machine roll without a release agent, a phenomenon in which the lyocell tow is rolled into a machine roll or the like may occur due to the adhesive force of a binder, etc. Machinability can be improved.
  • the polyhydric alcohol when applied to the lyocell tow, it helps to improve the hardness of the lyocell tow in a short time by being located between the lyocell fibers together with the binder even if it is not dried at a particularly high temperature for a long time. Accordingly, in the case of using a solvent containing a polyhydric alcohol, the drying time can be remarkably shortened, thereby improving the processability in manufacturing a cigarette filter.
  • the polyhydric alcohol is a diol having a C1 to C4 alkylene group.
  • the diol means a compound having two hydroxyl groups and is also referred to as glycol.
  • the two hydroxyl groups may be connected by a C1 to C4 alkylene group, and the number of carbon atoms in the alkylene group refers to the number of carbon atoms directly connected between the two hydroxyl groups.
  • the alkylene group exists in a substituted or unsubstituted state, and in the case of a substituted state, a substituent generally known in the art such as a C1 to C3 alkyl group, a C1 to C3 alkoxy group, a halogen group, etc.
  • the polyhydric alcohol may be propylene glycol.
  • the propylene glycol is a polyhydric alcohol having a chain of appropriate length, and may be a more preferable compound because it has the above-described functionality.
  • the polyhydric alcohol can be applied to the lyocell tow in the form of a binder solution together with a binder and other solvents, and remains unchanged on the lyocell tow or a cigarette filter to which it is applied before and after drying, giving the above-described functionality such as hardness as well as processability improvement.
  • the polyhydric alcohol is included in 0.5 parts by weight to 25 parts by weight based on 100 parts by weight of lyocell tow.
  • the content of the polyhydric alcohol is 0.5 parts by weight or more, 0.6 parts by weight or more, 0.7 parts by weight or more, 0.8 parts by weight or more, 0.9 parts by weight or more, 1 part by weight or more, 25 parts by weight or less, 20 parts by weight or less, 15 parts by weight or less, 10 parts by weight or less, 5 parts by weight or less, and may be 0.5 parts by weight to 10 parts by weight, 0.7 parts by weight to 7 parts by weight, or 1 to 5 parts by weight.
  • additional functionality can be imparted to the cigarette filter without deteriorating the function of the lyocell tow as a basic filter.
  • the solvent includes methanol, ethanol, propanol or a monohydric alcohol that is a combination thereof.
  • a specific method for adding the monohydric alcohol is described in the manufacturing method section.
  • the monohydric alcohol is a component with higher volatility than water, and a large amount may be lost after drying, but when stored at room temperature without going through a drying process, an amount of more than a certain level may be detected in the final cigarette filter. Since the monohydric alcohol can replace water in the solvent of the binder solution, it not only helps to improve the hardness of the cigarette filter, but also exhibits additional functionality when applied to the lyocell tow in that it has sterilizing power.
  • the monohydric alcohol is included in 1 part by weight to 500 parts by weight based on 10000 parts by weight of lyocell tow.
  • the monohydric alcohol is more volatile than polyhydric alcohol or water, and the content of the monohydric alcohol is highly variable.
  • monohydric alcohol when the drying process is reduced and stored at room temperature, monohydric alcohol is not added.
  • the lower limit is considered more meaningful than the upper limit in the content range in that monohydric alcohol of a certain level or higher can be detected.
  • a cigarette filter comprising a lyocell tow according to one embodiment of the present invention has excellent hardness due to the binding of the binder.
  • the cigarette filter has a hardness of 85% or more.
  • the hardness of the cigarette filter may be 85% or more, 86% or more, 87% or more, 88% or more, or 89% or more.
  • the hardness of the cigarette filter is a value obtained by quantifying the degree to which the diameter of the cigarette filter is maintained when the cigarette filter is pressed with a certain level of force in the vertical direction, and can be specifically calculated by Equation 1 below.
  • D is the filter diameter (mm)
  • a represents the distance (mm) that the 300g weight descends (the filter is pressed).
  • Measurements necessary for calculating the hardness of the cigarette filter can be obtained using a device commonly used in the art, for example, DHT 200 TM from Filtrona can be used. In measuring the hardness, the applied force takes into consideration the force applied when the actual smoker grips the cigarette.
  • the hardness value of 85% or more obtained through the cigarette filter according to one embodiment of the present invention can be secured at a level that can replace the conventional cigarette filter composed of cellulose acetate using lyocell tow, an eco-friendly material has technical significance.
  • the cigarette filter according to one embodiment of the present invention can implement an excellent hardness value of 85% or more as described above even after the elapse of time for the binder to settle at room temperature without going through a drying process at a high temperature. , the fairness in product manufacturing can be significantly improved.
  • the above-described cigarette filter may be manufactured through the following manufacturing method.
  • the manufacturing method includes preparing a lyocell tow using lyocell fibers, preparing a binder solution by mixing a binder and a solvent, spraying the binder solution on the lyocell tow, and binding the lyocell fibers to each other by the binder. and storing the lyocell tow to which the lyocell fibers are bonded by a binder with wrapping paper to manufacture a cigarette filter. Since the manufacturing method basically relates to a method of manufacturing the above-described cigarette filter, description of the specific parts in the above description will be omitted, and the following will describe the characteristics of the manufacturing method in more detail.
  • a lyocell tow is prepared using a plurality of lyocell fibers.
  • the manufactured lyocell tow has a bundle shape formed by cross-linking adjacent lyocell fibers.
  • a step of inflating the tow through blooming is additionally performed.
  • the binder solution sprayed thereafter can easily penetrate between the lyocell fibers constituting the lyocell tow.
  • a binder solution is prepared by mixing a binder and a solvent.
  • the binder solution is a material that is sprayed on the lyocell tow to improve functionality such as hardness of the lyocell tow. Since some components of the binder solution may be lost through drying or storage after spraying, the composition of the binder solution may be different from the composition of the components constituting the cigarette filter.
  • the binder can be specified according to the above description, and since the component is not particularly lost even after drying or storage, the amount supplied to the lyocell tow through spraying remains in the final cigarette filter almost as it is. According to one embodiment of the present invention, the binder is included in 5 parts by weight to 40 parts by weight based on 100 parts by weight of the binder solution.
  • the content of the binder is 5 parts by weight or more, 6 parts by weight or more, 7 parts by weight or more, 8 parts by weight or more, 9 parts by weight or more, 10 parts by weight or more, 40 parts by weight or less, 35 parts by weight or less, 30 parts by weight or less. 25 parts by weight or less, 20 parts by weight or less, and may be 5 parts by weight to 40 parts by weight, 7 parts by weight to 30 parts by weight, or 10 parts by weight to 20 parts by weight.
  • the binder is easy to apply to the lyocell tow by spraying when forming a binder solution within the above range.
  • the solvent includes water along with a polyhydric alcohol.
  • the viscosity may be excessively high, making it difficult to disperse the binder.
  • Water may be included as much as the remaining amount of the ratio occupied by the solvent such as polyhydric alcohol, and a part is lost in the drying process.
  • the polyhydric alcohol is included in 5 parts by weight to 50 parts by weight based on 100 parts by weight of the binder solution.
  • the content of the polyhydric alcohol is 5 parts by weight or more, 6 parts by weight or more, 7 parts by weight or more, 8 parts by weight or more, 9 parts by weight or more, 10 parts by weight or more, 50 parts by weight or less, 45 parts by weight or less, 40 parts by weight or less, 35 parts by weight or less, 30 parts by weight or less, and may be 5 parts by weight to 50 parts by weight, 7 parts by weight to 40 parts by weight, or 10 parts by weight to 30 parts by weight.
  • additional functionality can be imparted to the cigarette filter without deteriorating the function of the lyocell tow as a basic filter.
  • the solvent may further include a monohydric alcohol.
  • the monohydric alcohol is a component with higher volatility than water, and a large amount may be lost after drying, but when stored at room temperature without going through a drying process, an amount of more than a certain level may be detected in the final cigarette filter.
  • the monohydric alcohol is a component that can replace water in the solvent of the binder solution and can adjust the water content of the final cigarette filter.
  • the monohydric alcohol is methanol, ethanol, propanol or a combination thereof.
  • the monohydric alcohol may be ethanol.
  • the monohydric alcohol may be included at a certain level or higher to replace water. According to one embodiment of the present invention, the monohydric alcohol is included in 5 parts by weight to 60 parts by weight based on 100 parts by weight of the binder solution. Specifically, the content of the monohydric alcohol is 5 parts by weight or more, 6 parts by weight or more, 7 parts by weight or more, 8 parts by weight or more, 9 parts by weight or more, 10 parts by weight or more, 60 parts by weight or less, 55 parts by weight or less.
  • the binder solution prepared according to the above is sprayed on the lyocell tow.
  • the binder solution may be sprayed onto the lyocell tow to an extent capable of solving problems such as hardness of the material of the lyocell tow without deteriorating the function of the lyocell tow as a basic filter.
  • the binder solution is sprayed on the lyocell tow in an amount of 5 to 30 parts by weight based on 100 parts by weight of the lyocell tow.
  • the spray amount of the binder solution is 5 parts by weight or more, 6 parts by weight or more, 7 parts by weight or more, 8 parts by weight or more, 9 parts by weight or more, 10 parts by weight or more, 30 parts by weight or less, 28 parts by weight or less, 26 parts by weight or less, 24 parts by weight or less, 22 parts by weight or less, 20 parts by weight or less, and may be 5 parts by weight to 30 parts by weight, 7 parts by weight to 24 parts by weight, or 10 parts by weight to 20 parts by weight.
  • a method of spraying the binder solution may be a method commonly used in the art, and is not particularly limited.
  • spraying of the binder solution may utilize nozzle spraying, brush spraying, or electric spraying.
  • the binder solution After the binder solution is sprayed on the lyocell tow, the binder is stored so that the binder settles and the lyocell fibers are bonded to each other by the binder. This process is different from high-temperature long-term drying, and since the binder solution can sufficiently proceed with the next operation even when stored at room temperature for 6 hours, for example, fairness in product manufacturing can be improved. .
  • a cigarette filter is manufactured by surrounding the lyocell tow to which the lyocell fibers are bonded by a binder with wrapping paper. If necessary, the lyocell tow may be processed into a size suitable for application to a cigarette filter using a mechanical roll or a cutter.
  • the tobacco filter described above can be applied to smoking articles.
  • 1 provides a diagram showing the schematic configuration of a smoking article according to one embodiment of the present invention.
  • the smoking article 100 includes a smoking substance portion 10 and a filter portion 20, and the above-described tobacco filter is applied to the filter portion 20 of the smoking article 100.
  • the smoking substance portion 10 is located upstream compared to the filter portion 20.
  • the smoking substance unit 10 may be filled with smoking substances such as raw leaf tobacco, leaf tobacco, or a mixture of leaf tobacco and leaf tobacco.
  • the processed smoking material may be filled in the smoking material unit 10 in the form of a sheet or cut filler.
  • the smoking material unit 10 may have a long elongated rod shape, and its length, circumference and diameter are not particularly limited, but a size generally used in the related art considering the filling amount of smoking material, user's preference, etc. can be adjusted with
  • the smoking material part 10 may include at least one aerosol generating material selected from glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol.
  • the smoking substance portion 10 may contain other additives such as flavoring agents, humectants and/or acetate compounds.
  • the aerosol-generating substances and additives may be contained in smoking substances.
  • the filter unit 20 is disposed downstream of the smoking material unit 10 and serves as a filter through which the aerosol generated from the smoking material unit 10 passes immediately before the user inhales it.
  • the filter unit 20 may be made of various materials or shapes.
  • the filter unit 20 according to one embodiment of the present invention basically includes the above-described cigarette filter including a lyocell tow in which a plurality of lyocell fibers are bonded by a binder.
  • the cigarette filter including the lyocell tow can replace all or part of the filter unit 20 of an existing smoking article, and in the case of partial replacement, the filter material previously used can be used together.
  • Existing filter materials for example, cellulose acetate filters, hollow tube filters, and the like may be used.
  • the filter unit 20 is shown as a monofilter made of a single filter, but is not limited thereto.
  • the filter unit 20 may be provided with a dual filter or triple filter having two acetate filters to increase filter efficiency.
  • a crushable capsule (not shown) having a structure in which an inner liquid containing a fragrance is wrapped with a film may be included inside the filter unit 20 .
  • the outside of the smoking substance part 10 and the filter part 20 may be wrapped by a wrapper 30a or 30b.
  • the smoking substance portion 10 may be wrapped by a smoking substance portion wrapper 30a.
  • Some of the cigarette smoke generated in the combustion process of the general smoking material part 10 is released into the atmosphere through the smoking material part wrapper 30a before passing through the cigarette filter, and the sidestream smoke gives secondhand smokers an unpleasant feeling.
  • Various attempts have been made, such as adding fillers such as magnesium oxide, titanium oxide, cerium oxide, aluminum oxide, calcium carbonate, zirconium carbonate, etc. to cigarette paper for reducing sidestream smoke, but simply applying these fillers to reduce sidestream smoke gives a feeling of smoking. It has been difficult to solve the above problems through an appropriate combination of materials entering the filler, due to deterioration, burning off, or deterioration of retrograde integrity.
  • the smoking material part wrapper 30a is magnesium oxide (MgO and/or Mg(OH) 2 ) and calcium carbonate in order to reduce sidestream smoke and at the same time prevent a burning sensation, a deterioration in retrograde consistency, and burnout. (CaCO 3 ) is applied as a mixed filler.
  • the filter unit 20 may be wrapped by a filter unit wrapper 30b.
  • the filter unit wrapper 30b may be made of paper having oil resistance, and aluminum foil may be further included on the inner surface of the filter unit wrapper 30b.
  • the smoking substance portion 10 wrapped by the smoking substance portion wrapper 30a and the filter portion 20 wrapped by the filter portion wrapper 30b may be combined and packaged by the tip paper 40 .
  • the tip paper 40 may be wrapped around at least a portion of the smoking material wrapper 30a (for example, a downstream portion) and the outside of the filter wrapper 30b.
  • the tip paper 40 may be made of non-porous paper that is not oil-resistant, but is not limited thereto.
  • the tip paper 40 may prevent the filter unit 20 from burning by including an incombustible material, but is not limited thereto.
  • Lyocell tow having a tow fiber bundle of about 35,000 denier was used by using a lyocell fiber having a fiber length of about 3.0 denier.
  • a binder solution which is a mixture of a binder and a solvent, was prepared.
  • the prepared binder solution was sprayed onto the lyocell tow through a nozzle spray.
  • the binder solution was sprayed at 15% by weight based on the weight of the lyocell tow and stored at room temperature for 6 hours to prepare a lyocell tow containing a binder.
  • a cigarette filter having an axial length of about 108 mm and a circumference of about 24.20 mm was prepared by wrapping the prepared lyocell tow with wrapping paper.
  • a cigarette filter was prepared in the same manner as in Example 1, except that 3% by weight of polyester and 7% by weight of hydroxypropyl methyl cellulose (Pharmacoat 606) were used instead of 10% by weight of polyester in the binder solution.
  • a cigarette filter was prepared in the same manner as in Example 2, except that a mixed solvent of ethanol and 30% by weight of water) was used.
  • a cigarette filter was prepared without spraying the binder solution on the lyocell tow.
  • Example 2 The same as in Example 1 except that 90% by weight of water was used as the solvent of the binder solution instead of 90% by weight of the solvent (30% by weight of propylene glycol, 10% by weight of ethanol, and 50% by weight of a mixed solvent of water).
  • a cigarette filter was manufactured by the method.
  • Example 2 Same as Example 2, except that 90% by weight of water was used instead of 90% by weight of the solvent (a mixed solvent of 30% by weight of propylene glycol, 10% by weight of ethanol, and 50% by weight of water) as the solvent of the binder solution.
  • the solvent a mixed solvent of 30% by weight of propylene glycol, 10% by weight of ethanol, and 50% by weight of water
  • the hardness of the cigarette filters prepared according to Examples 1 to 3 and Comparative Examples 1 to 3 was measured. Specifically, the hardness of the cigarette filter was measured using a filter hardness measuring instrument (Filtrona's DHT 200 TM ) and the following formula 1.
  • D is the filter diameter
  • a represents the distance (mm) that the 300 g weight descends (the filter is pressed).
  • the polyhydric alcohol included in the binder solution serves as a release agent when applied to the subsequent roll processing process, etc. to prevent the lyocell tow from being rolled into the roll, and monohydric alcohol is a volatile component rather than water. It can express additional functionality, such as remaining in the sterilization.

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

Abstract

L'invention concerne un filtre de cigarette comprenant : une étoupe de lyocell constituée d'une pluralité de fibres de lyocell ; un liant pour lier les fibres de lyocell ; et un solvant dispersé dans l'espace interne du filtre de cigarette comprenant l'étoupe de lyocell, le solvant comprenant un alcool polyhydrique. Selon un exemple spécifique de la présente invention, l'alcool polyhydrique est un diol ayant des groupes alkylène en C1 à C4. Le filtre de cigarette selon un exemple spécifique de la présente invention surmonte un problème lié au matériau d'une étoupe de lyocell existante, et présente une excellente dureté.
PCT/KR2022/017171 2021-12-07 2022-11-03 Filtre de cigarette comprenant une étoupe de lyocell, et son procédé de fabrication WO2023106643A1 (fr)

Applications Claiming Priority (2)

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KR1020210173493A KR20230085386A (ko) 2021-12-07 2021-12-07 라이오셀 토우를 포함하는 담배 필터 및 이의 제조방법
KR10-2021-0173493 2021-12-07

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WO2023106643A1 true WO2023106643A1 (fr) 2023-06-15

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150116612A (ko) 2014-04-08 2015-10-16 주식회사 케이티앤지 담배 필터, 이의 제조방법 및 이를 포함하는 담배
KR20160048738A (ko) * 2016-04-15 2016-05-04 주식회사 케이티앤지 담배 필터, 이의 제조방법 및 이를 포함하는 담배
US20160270437A1 (en) * 2013-12-20 2016-09-22 Philip Morris Products S.A. Smoking article filter including degradable filter component
US20190045838A1 (en) * 2016-02-29 2019-02-14 Philip Morris Products S.A. Smoking article having filter with hollow tube segment
KR20210127243A (ko) * 2019-03-01 2021-10-21 난통 셀룰로오스 파이버스 컴퍼니 리미티드 에어로졸 발생 물품, 제조방법 및 그의 용도

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160270437A1 (en) * 2013-12-20 2016-09-22 Philip Morris Products S.A. Smoking article filter including degradable filter component
KR20150116612A (ko) 2014-04-08 2015-10-16 주식회사 케이티앤지 담배 필터, 이의 제조방법 및 이를 포함하는 담배
US20190045838A1 (en) * 2016-02-29 2019-02-14 Philip Morris Products S.A. Smoking article having filter with hollow tube segment
KR20160048738A (ko) * 2016-04-15 2016-05-04 주식회사 케이티앤지 담배 필터, 이의 제조방법 및 이를 포함하는 담배
KR20210127243A (ko) * 2019-03-01 2021-10-21 난통 셀룰로오스 파이버스 컴퍼니 리미티드 에어로졸 발생 물품, 제조방법 및 그의 용도

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