WO2023128520A1 - 라이오셀 소재, 흡연 물품용 필터, 흡연 물품 및 이들의 제조방법 - Google Patents
라이오셀 소재, 흡연 물품용 필터, 흡연 물품 및 이들의 제조방법 Download PDFInfo
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- WO2023128520A1 WO2023128520A1 PCT/KR2022/021311 KR2022021311W WO2023128520A1 WO 2023128520 A1 WO2023128520 A1 WO 2023128520A1 KR 2022021311 W KR2022021311 W KR 2022021311W WO 2023128520 A1 WO2023128520 A1 WO 2023128520A1
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- Prior art keywords
- filter
- lyocell
- weight
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- emulsion
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Classifications
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- D—TEXTILES; PAPER
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- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- 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
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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
- A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
- A24D3/068—Biodegradable or disintegrable
-
- 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
-
- 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
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Definitions
- the present application relates to a lyocell material, a filter including the same, a smoking article, and a method for manufacturing the same.
- cellulose acetate fibers have been mainly used as a cigarette filter material.
- Cellulose acetate is known as a biodegradable material, but filters for smoking articles made of cellulose acetate exist while maintaining their original form for one to two years even after being buried in soil, and it takes a considerable amount of time until they are completely biodegraded.
- filters for smoking articles made of cellulose acetate exist while maintaining their original form for one to two years even after being buried in soil, and it takes a considerable amount of time until they are completely biodegraded.
- more environmentally friendly lyocell has recently been selected as a material to replace cellulose acetate.
- tanning may be used to prepare tow for smoking article filters.
- Lyocell tow treated with a conventional emulsion is measured by using a moisture analyzer and drying oven combined with a scale capable of measuring moisture drying loss. After measuring the weight when no more weight loss occurs, and comparing these weights) is about 10%, which is higher than 5% of cellulose acetate tow. Accordingly, the hardness of the filter containing the lyocell tow is lower than that of the filter containing the cellulose acetate tow, and the hardness decay due to saliva appears more quickly in the case of using the filter containing the lyocell tow in actual use. For example, (depending on the user or the situation), the user may hold the cigarette in his or her mouth while smoking.
- One object of the present application is to provide a lyocell material that can replace commercially available cellulose acetate for filters for smoking articles.
- Another object of the present application is to provide a lyocell material for a smoking article filter that is environmentally friendly in its manufacturing process and has excellent biodegradability upon disposal.
- Another object of the present application is to provide a lyocell material for a smoking article filter having little change in hardness upon water penetration.
- Another object of the present application is to provide a lyocell filter for smoking articles.
- Another object of the present application is to provide a smoking article (eg, cigarette) comprising a lyocell filter.
- Another object of the present application is to improve the processability associated with manufacturing the lyocell materials, filters and smoking articles.
- a lyocell material, a filter and a smoking article including the same may be provided.
- the inventors of the present application can treat the lyocell material with a specific emulsion to overcome the hydrophilicity of the lyocell surface, improve compatibility with the binder, and improve the degree of hardness reduction caused by needles. (e.g., capable of providing a similar or equivalent level of hardness when compared to conventional cellulose acetate filters).
- the lyocell multi-filament to which the crimp is applied and an emulsion coated on the lyocell multifilament, wherein the emulsion includes (a) an ester of a fatty acid having at least 16 carbon atoms and an aliphatic monohydric alcohol, and (b) an ester of sorbitan and a fatty acid having at least 16 carbon atoms.
- a lyocell material, containing a cargo, may be provided.
- the lyocell multi-filament is given a crimp; and an emulsion coated on the lyocell multifilaments, and a lyocell material having a settling time of 6.0 seconds or more in water may be provided.
- a filter for a smoking article comprising a lyocell material, wherein the lyocell material includes lyocell multifilaments to which a crimp is applied; and an emulsion coated on the lyocell multifilament, wherein the emulsion includes (a) an ester of a fatty acid having at least 16 carbon atoms and an aliphatic monohydric alcohol, and (b) an ester of sorbitan and a fatty acid having at least 16 carbon atoms.
- a filter for a lyocell smoking article comprising a cargo may be provided.
- the diameter retention rate of the filter before water injection calculated according to Equation 1-1 below, which expresses the degree of hardness change of the filter for smoking articles, satisfies 85% or more, and the following Equation 1-
- a filter for a smoking article in which the retention ratio of the diameter of the filter after water injection, expressed according to 2, satisfies 80% or more.
- a smoking article including the lyocell material or filter may be provided.
- a method for manufacturing the lyocell material, a filter and a smoking article including the same may be provided.
- an emulsion capable of modifying the hydrophilicity of the surface of a lyocell material to be hydrophobic and improving the degree of hardness reduction of a filter for smoking articles due to moisture may be provided.
- 'smoking article' may refer to an article capable of generating an aerosol, such as a cigarette (cigarette) or cigar.
- smoking articles may include an aerosol-generating material or an aerosol-forming substrate.
- Smoking articles may also include solid materials based on tobacco raw materials, such as leafy tobacco, cut filler, and reconstituted tobacco.
- the smoking material may contain volatile compounds.
- the temperature at which the properties are confirmed or measured may be room temperature.
- the room temperature is a temperature in a state where the temperature is not particularly reduced or warmed, and may be, for example, 10 to 35 °C, specifically 15 to 35 °C, 20 to 30 °C, or about 25 °C.
- the present application relates to a lyocell material.
- the lyocell material may be used in a filter for smoking articles.
- the lyocell material is a lyocell multi-filament to which a crimp is applied; and an emulsion coated on the lyocell multifilament.
- the emulsion may include (a) an esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol; and (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms.
- This emulsion can be applied to all or part of the mono or multi-filaments constituting the lyocell material. Also, the emulsion may penetrate between the filaments.
- An emulsion containing at least the components (a) and (b) may have hydrophobicity. Accordingly, the emulsion can solve the problem of the hydrophilicity of the surface of the lyocell, the vulnerability to moisture, and the resulting decrease in the hardness of the filter. In addition, the emulsion has excellent compatibility with a binder component described later.
- the lyocell material may include a predetermined amount of the emulsion.
- the content of the emulsion may mean OPU (wt%) described later.
- the lyocell material may include an emulsion in an amount of 2.0% by weight or more based on 100% by weight of the total lyocell material.
- the content of the emulsion is 2.5% by weight or more, 3.0% by weight or more, specifically 3.5% by weight or more, 4.0% by weight or more, 4.5% by weight or more, 5.0% by weight or more, 5.5% by weight or more, 6.0% by weight or more.
- 6.5 wt% or more 7.0 wt% or more, 7.5 wt% or more, 8.0 wt% or more, 8.5 wt% or more, 9.0 wt% or more, or 9.5 wt% or more.
- the upper limit is, for example, 15.0 wt% or less, 14.5 wt% or less, 14.0 wt% or less, 13.5 wt% or less, 13.0 wt% or less, 12.5 wt% or less, 12.0 wt% or less, 11.5 wt% or less, 11.0 10.5 wt% or less, 10 wt% or less, 9.5 wt% or less, 9.0 wt% or less, 8.5 wt% or less, 8.0 wt% or less, 7.5 wt% or less, 7.0 wt% or less, 6.5 wt% or less, 6.0 5.5 wt% or less, 5.0 wt% or less, 4.5 wt% or less, 4.0 wt% or less, or 3.5 wt% or less.
- an extrusion method may be used as a method for measuring the content (OPU) of the emulsion.
- a sample eg, 2 to 5 g, specifically about 2.5 g
- the weight of the sample taken is referred to as the sample weight
- the sample is put into a syringe-shaped container.
- the material of the container is not particularly limited, but may be a SUS (Stainless) material.
- a solvent eg, methanol
- the amount of the solvent to be introduced may be 10 ml or less (eg, about 8 ml)).
- the solvent When the solvent is introduced into the sample, a drop method can be made, and the drop speed is uniformly controlled. Then, the solvent injected into the container as described above is allowed to fall onto the plate from one end of the syringe-shaped container. At this time, the plate is weighed in advance (the weighed weight is referred to as plate weight A), and the plate is such that the solvent dropped on the plate can fly at a temperature of 120 to 130 ° C. (eg 125 ° C.) (i.e. , evaporated) is installed.
- a temperature of 120 to 130 ° C. eg 125 ° C.
- the above-described injection of the solvent and the dropping of the solvent are performed three times, and the pressure (eg, 10 kgf/cm 2 or less, 5 kgf/cm 2 or less, or 2-4 kgf/cm 2 ) is applied to the sample using a syringe-type container. ) to press the sample once.
- the pressure eg, 10 kgf/cm 2 or less, 5 kgf/cm 2 or less, or 2-4 kgf/cm 2
- the pressure eg. 10 kgf/cm 2 or less, 5 kgf/cm 2 or less, or 2-4 kgf/cm 2
- Emulsion content by extrusion (OPU, % or wt%)
- the lyocell material which is a standard for the oil content, may be lyocell multifilament treated with at least an oil agent.
- the lyocell material is a lyocell multifilament to which a primary emulsion treatment (described below) is applied, a lyocell multifilament to which a primary emulsion treatment and a secondary emulsion treatment (to be described below) are applied, or It may be a lyocell multifilament to which a binder to be described later is applied along with the above emulsion treatment.
- the lyocell multifilaments treated with an emulsion and/or binder as described above may be crimped.
- the component (a) is a compound that can function as a type of lubricant or oil, and is harmless to the human body so that it can be used in food.
- Component (a) imparts lubricity to the fibers introduced into the crimper. If the lubrication is not sufficient, the lyocell sticks together and cannot come out of the crimper, and if the lubrication is too high, the crimp does not form well.
- the content of component (a) can be controlled as described below in consideration of this function.
- the type of fatty acid having 16 or more carbon atoms forming it is not particularly limited.
- a fatty acid having 16 or more carbon atoms that can provide an ester product that is harmless to the human body enough to be used in food can be used.
- saturated fatty acids and/or unsaturated fatty acids may be used as the fatty acids having 16 or more carbon atoms.
- Saturated fatty acids include, for example, palmitic acid (hexadecanoic acid, CH 3 (CH 2 ) 14 COOH), margaric acid (heptadecanoic acid, CH 3 (CH 2 ) 15 COOH), stearic acid (octadecanoic acid). , CH 3 (CH 2 ) 16 COOH), nonadecylic acid (nonadecanoic acid, CH 3 (CH 2 ) 17 COOH) or arachidic acid (eicosanoic acid, CH 3 (CH 2 ) 18 COOH).
- the types of usable saturated fatty acids are not limited thereto.
- the types of usable saturated fatty acids are not limited thereto.
- the upper limit of the carbon number of the fatty acid having 16 or more carbon atoms is not particularly limited, but may be, for example, 40 or less, 36 or less, 32 or less, 28 or less, 24 or less, or 20 or less.
- the kind of aliphatic monohydric alcohol forming it is not particularly limited either.
- An aliphatic monohydric alcohol capable of providing an ester product harmless to the human body that can be used for food can be used.
- it may be a saturated aliphatic alcohol or an unsaturated aliphatic alcohol, which may have a linear or branched form.
- the carbon number of the aliphatic monohydric alcohol may be 1 to 40.
- the number of carbon atoms of the aliphatic monohydric alcohol may be, for example, 4 or more, 8 or more, 12 or more, 16 or more, or 20 or more.
- aliphatic monohydric alcohol examples include, but are not limited to, methanol, ethanol, butanol, lauryl alcohol, isotridecanol, or stearyl alcohol.
- an ester product of isotridecanol and stearic acid eg, isotridecyl stearate
- the type of component (a) that can be used is not limited thereto.
- the content of the component (a) included in the emulsion may be adjusted in consideration of the function of the emulsion or the function of the component (a).
- the component (b) that is, the esterified product of sorbitan and a fatty acid having 16 or more carbon atoms, is a compound that can function as a kind of emulsifier and is harmless to the human body so that it can be used in food.
- component (b) Since component (b) has hydrophilicity and hydrophobicity at the same time due to polyhydric alcohol (ie, sorbitan), component (a) that imparts lubricity to fibers can be well dispersed in water to be described later.
- the components (a) and (b) used together not only increase the dispersibility of the emulsion as described above, but also lower the melting point to ensure the handling and stability of the emulsion.
- the content of the component (b) may be controlled as described below in consideration of these functions.
- the type of fatty acid having 16 or more carbon atoms forming it is not particularly limited.
- a fatty acid having 16 or more carbon atoms that can provide an ester product that is harmless to the human body enough to be used in food can be used.
- saturated fatty acids and/or unsaturated fatty acids may be used as the fatty acids having 16 or more carbon atoms.
- Saturated fatty acids include, for example, palmitic acid (hexadecanoic acid, CH 3 (CH 2 ) 14 COOH), margaric acid (heptadecanoic acid, CH 3 (CH 2 ) 15 COOH), stearic acid (octadecanoic acid). , CH 3 (CH 2 ) 16 COOH), nonadecylic acid (nonadecanoic acid, CH 3 (CH 2 ) 17 COOH) or arachidic acid (eicosanoic acid, CH 3 (CH 2 ) 18 COOH).
- the types of usable saturated fatty acids are not limited thereto.
- the types of usable saturated fatty acids are not limited thereto.
- the upper limit of the carbon number of the fatty acid having 16 or more carbon atoms is not particularly limited, but may be, for example, 40 or less, 36 or less, 32 or less, 28 or less, 24 or less, or 20 or less.
- component (b) an esterified product of sorbitan and oleic acid (eg, sorbitan monooleate) may be used.
- sorbitan and oleic acid eg, sorbitan monooleate
- the type of component (b) that can be used is not limited thereto.
- the content of component (b) may be adjusted in consideration of the function of component (b) and the function of the emulsion.
- the emulsion contains (a) 100 parts by weight of the esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol, (b) 20 to 60 parts by weight of an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms It may contain parts by weight.
- the emulsion of the present application contains 25 parts by weight or more, 30 parts by weight or more, 35 parts by weight or more, 40 parts by weight or more, 45 parts by weight or more, or 50 parts by weight of the component (b) relative to 100 parts by weight of the component (a). It may be included in an amount equal to or greater than parts by weight.
- the upper limit of the content of component (b) relative to 100 parts by weight of component (a) is, for example, 55 parts by weight or less, 50 parts by weight or less, 45 parts by weight or less, 40 parts by weight or less, 35 parts by weight or less, It may be 30 parts by weight or less or 25 parts by weight or less.
- the surface of the emulsion-treated lyocell multifilament or lyocell tow can have hydrophobicity, and as a result, the problem of excessive hardness reduction of the filter due to penetration of moisture (eg saliva) can be solved. .
- the emulsion may further include an alkylene oxide adduct to the component (b) as component (c).
- Component (c) may function as a kind of emulsifier.
- the corresponding compound may also be selected from those harmless to the human body so that it can be used in food.
- the type of the alkylene oxide is not particularly limited, but, for example, the alkylene oxide may have 2 to 4 carbon atoms.
- the alkylene oxide may have 2 to 4 carbon atoms.
- ethylene oxide, propylene oxide and/or butylene oxide may be used, but is not limited thereto.
- the number of added moles of alkylene oxide is not particularly limited. For example, it may be 1 to 100, 5 to 80, 10 to 60, or 15 to 40.
- an esterification product of a PEO adduct of sorbitan and oleic acid may be used (eg, polyoxyethylene sorbitan monooleate).
- the type of component (c) that can be used is not limited thereto.
- Component (c) improves processability, such as suppressing static electricity generation of lyocell staples during the manufacturing process of filters for smoking articles and preventing cutting problems caused by static electricity generation. Specifically, moisture is adsorbed on the fiber surface by the alkylene oxide-derived unit, so that static electricity generation can be suppressed. In addition, component (c) also serves to help the emulsion to be effectively dispersed in water.
- the content of component (c) may be adjusted in consideration of the function of component (c) and the function of the emulsion.
- the emulsion contains 10 to 50 parts by weight of the alkylene oxide adduct of the (c) esterified product (b), relative to 100 parts by weight of the (a) esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol. wealth may be included.
- the emulsion of the present application contains 15 parts by weight or more, 20 parts by weight or more, 25 parts by weight or more, 30 parts by weight or more, 35 parts by weight or more, 40 parts by weight or more of the component (c), relative to 100 parts by weight of the component (a). It may contain more than 45 parts by weight or more.
- the upper limit of the content of component (c) with respect to 100 parts by weight of component (a) is, for example, 45 parts by weight or less, 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 or 15 parts by weight or less.
- the emulsion may include (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms in excess of (c) an alkylene oxide adduct for the esterified product (b).
- the emulsion may include 40 to 80 wt% of (a) an esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol, based on 100 wt% of the total weight of the emulsion.
- the content of the component (a) is 45% by weight or more, 50% by weight or more, 55% by weight or more, 60% by weight or more, or 65% by weight or more, or 70% by weight or more. or 75% by weight or more.
- the upper limit of the content may be, for example, 75% by weight or less, 70% by weight or less, 65% by weight or less, 60% by weight or less, 55% by weight or less, 50% by weight or less, or 45% by weight or less.
- the emulsion may include the most excessive amount of component (a) among components (a) to (c).
- the emulsion may include 15 to 55 wt% of (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms, based on 100 wt% of the total weight of the emulsion.
- the content of the component (b) is 20% by weight or more, 25% by weight or more, 30% by weight or more, 35% by weight or more, 40% by weight or more, 45% by weight or more or 50% by weight or more.
- the upper limit of the content may be, for example, 50% by weight or less, 45% by weight or less, 40% by weight or less, 35% by weight or less, 30% by weight or less, or 25% by weight or less.
- the emulsion may include 10 to 30 wt% of component (c), that is, an alkylene oxide adduct for (b), based on 100 wt% of the total weight of the emulsion.
- component (c) based on 100% by weight of the total weight of the emulsion, the content of component (c) may be 15% by weight or more, 20% by weight or more, or 25% by weight or more.
- the upper limit of the content may be, for example, 25% by weight or less, 20% by weight or less, or 15% by weight or less.
- the emulsion may include, based on 100% by weight of the total weight of the emulsion, (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms; and (c) at least 15% by weight of the alkylene oxide adduct of (b).
- the total content of the components (b) and (c) is 20% by weight or more, 25% by weight or more, 30% by weight or more, 35% by weight or more, 40% by weight or more , 45 wt% or more or 50 wt% or more.
- the upper limit of the content may be, for example, 55% by weight or less, 50% by weight or less, 45% by weight or less, 40% by weight or less, 35% by weight or less, 30% by weight or less, or 25% by weight or less.
- the emulsion may further include (d) water.
- water used in small amounts helps emulsification.
- the content of water is not particularly limited, but may be included in an amount remaining except for the total content of components (a) to (c) in 100% by weight of the total emulsion.
- the amount of water contained in the emulsion (that is, the residual amount excluding the total content of the other ingredients except water) is, for example, 10% by weight or less, 9% by weight or less, 8% by weight or less, 7% by weight or less, 6% by weight or less or less, 5% by weight or less, 4% by weight or less, 3% by weight or less, 2% by weight or less, or 1% by weight or less.
- the lower limit thereof may be, for example, 0 wt% or more, 0.1 wt% or more, 0.5 wt% or more, or 1 wt% or more.
- the lyocell material of the present application may be a crimp tow having a fineness suitable for manufacturing a filter for a smoking article and securing its function.
- the total fineness of the tow is a factor related to the amount of filament that can be put into the filter wrapper. If the total fineness is too low, a sufficient amount of filament cannot be filled into the filter wrapper, resulting in a lower resistance to attraction. In addition, if the total fineness is too high, the amount filled in the filter wrapper is too large and the filter wrapper bursts, or it becomes difficult to adjust the amount of tow filling required for the filter to realize the suction resistance.
- the single fineness of the filament constituting the lyocell multifilament may be 1.5 to 8.0 denier.
- the single fineness of the filament means the fineness of one all monofilament separated from the multifilament.
- the single fineness of the filament may be, for example, 7.5 denier or less, 7.0 denier or less, 6.5 denier or less, 6.0 denier or less, 5.5 denier or less, 5.0 denier or less, 4.5 denier or less, 3.5 denier or less, or 3.0 denier or less.
- the lower limit may be, for example, 2.0 denier or more, 2.5 denier or more, 3.0 denier or more, 3.5 denier or more, 4.0 denier or more, 4.5 denier or more, 5.0 denier or more, 5.5 denier or more, or 6.0 denier or more. Satisfying the above range may be more advantageous in securing stable physical properties (eg, hardness or resistance to drawing) and fairness of a filter for smoking articles.
- the crimp-applied lyocell multifilament may be crimp tow having a total fineness of 15,000 to 45,000 denier.
- the lower limit of the total fineness is, for example, 16,000 or more, 16,500 or more, 17,000 or more, 17,500 or more, 18,000 or more, 18,500 or more, 19,000 or more, 19,500 or more, 20,000 or more, 20,500 or more, 21,000 or more, 21,500 over, 22,000+, 22,500+, 23,000+, 23,500+, 24,000+, 24,500+, 25,000+, 25,500+, 26,000+, 26,500+, 27,000+, 27,500+, 28,000+, 28,5 00 or more, 29,000 or more, 29,500 or more, 30,000 or more , 30,500 or more, 31,000 or more, 31,500 or more, 32,000 or more, 32,500 or more, 33,000 or more, 33,500 or more, 34,000 or more, 34,500 or more, 35,000 or more, 35,500 or more, 36,000 or more, 36
- the upper limit is, for example, 44,500 or less, 44,000 or less, 43,500 or less, 43,000 or less, 42,500 or less, 42,000 or less, 41,500 or less, 41,000 or less, 40,500 or less, 40,000 or less, 39,500 or less, 39,000 or less, 38, 500 or less, 38,000 or less , 37,500 or less, 37,000 or less, 36,500 or less, 36,000 or less, 35,500 or less, 35,000 or less, 34,500 or less, 34,000 or less, 33,500 or less, 33,000 or less, 32,500 or less, 32,000 or less, 31,500 or less, 31 ,000 or less, 30,500 or less, 30,000 or less, 29,500 29,000 or less, 28,500 or less, 28,000 or less, 27,500 or less, 27,000 or less, 26,500 or less, 26,000 or less, 25,500 or less, 25,000 or less, 24,500 or less, 24,000 or less, 23,500 or less, 23,000 or less, 22 ,500 or less, 22,000 or less, 21,500 or
- the method of measuring the fineness is not particularly limited, but for example, take a 2 m sample of tow to be measured, leave it in a constant temperature and humidity room at a temperature of 20 ° C and a humidity of 65% for 24 hours and stabilize it. One end of the stabilized toe is fixed, and a weight of 2 kg is attached to the other end. After maintaining (stabilizing) the tow in an elongated state due to the load for 5 seconds, a sample is obtained by cutting to 90 cm, and the weight of the sample is measured (total fineness). The fineness is converted into measured weight ⁇ 10000 according to the denier conversion method. Single fineness is calculated by dividing the total fineness by the number of filament strands.
- the total fineness of the tow as described above may be determined by the single fineness of the filaments and the number of crimps.
- the single fineness and the number of crimps are controlled as described above, it is possible to secure the above-described total fineness of the tow suitable for manufacturing a filter for a smoking article and securing its function.
- the crimp-applied lyocell multifilament may have 20 to 50 crimps per inch.
- the number of crimps may be 25 ea / inch or more, 30 ea / inch or more, 35 ea / inch or more, 40 ea / inch or more, or 45 ea / inch or more, and the upper limit is, for example, 45 ea / inch or less, 40 ea / inch or less, 35 ea / inch or less, 30 ea / inch or less, or 25 ea / inch or less.
- the number of crimps and their uniformity can be controlled through pressure and temperature conditions related to the crimping step, which will be described later.
- the number of crimps may be expressed as upper and lower limits of the number of crimps measured for 20 threads.
- the number of crimps may be expressed as an arithmetic average value for the number of crimps measured for 20 threads.
- the lyocell material prepared as described above may be used in a filter for smoking articles.
- the lyocell material may further include a binder.
- the binder may be present, for example, on the surface of the crimp-applied lyocell multifilaments or between the crimp-coated lyocell multifilaments (or monofilaments).
- the binder can increase the hardness of a filter for a smoking article made of tow to prevent filter jamming in a filter manufacturing process or a smoking article (eg, cigarette) manufacturing process.
- the type of binder that can be used is not particularly limited, and a known binder may be used at a level that does not impair the purpose of the present invention.
- a binder capable of providing sufficient compatibility with the emulsion used in the present application, improving the hardness of the filter, and providing excellent bonding strength may be used.
- the binder may include a polyester-based binder, a cellulose-based binder, and/or a vinyl-based binder.
- polyester binder containing at least one selected from the group consisting of alkylene having 5 to 12 carbon atoms, arylene, and heteroarylene may be used.
- cellulose-based binder for example, hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC) and/or methylcellulose (MC), carboxymethylcellulose (CMC), etc. may be used, but are not limited thereto. .
- HPMC hydroxypropylmethylcellulose
- EC ethylcellulose
- MC methylcellulose
- CMC carboxymethylcellulose
- vinyl-based binder for example, polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and/or ethylene vinyl acetate (EVAc) may be used, but is not limited thereto.
- PVP polyvinylpyrrolidone
- PVA polyvinyl alcohol
- EVAc ethylene vinyl acetate
- the lyocell material may be a lyocell material (crimp tow) having a sedimentation time in water of 6.0 seconds or more.
- the settling time means the time for the lyocell material to fall to the bottom of the container after the lyocell material is put into a container (eg, beaker) filled with water (for a specific measurement method, refer to an embodiment to be described later) .
- the length of the tow used in measuring the settling time (eg, the length of the longest dimension of the tow shape) is, for example, 10 cm or less, 9 cm or less, 8 cm or less, or 7 cm or less. , 6 cm or less or 5 cm or less, and the lower limit may be 1 cm or more, 2 cm or more, 3 cm or more, 4 cm or more, or 5 cm or more.
- the cutting size (length) may have an error within ⁇ 1 cm, ⁇ 0.5 cm, or ⁇ 0.1 cm.
- the height of the water filled in the container may be 12 to 13 cm or about 12.5 cm. At this time, the height may have an error within ⁇ 1 cm, ⁇ 0.5 cm, or ⁇ 0.1 cm.
- the lyocell material of the present application may have a hydrophobic surface through emulsion coating.
- the settling time may be adjusted according to the content (% by weight) of the emulsion in the material.
- the settling time is 6.5 seconds or more, 7.0 seconds or more, 7.5 seconds or more, 8.0 seconds or more, 8.5 seconds or more, or 9.0 seconds. It may be 9.5 seconds or more, or 10 seconds or more, and may be 15 seconds or less, 14 seconds or less, 13 seconds or less, 12 seconds or less, 11 seconds or less, or 10 seconds or less.
- this sedimentation time characteristic can also be expressed as a sedimentation rate (cm/sec) according to the above-mentioned time and water height.
- the present application relates to a lyocell material having hydrophobic properties.
- the lyocell material may exhibit a predetermined sedimentation property with respect to water.
- the lyocell material may be a lyocell material (crimp tow) having a settling time in water of 6.0 seconds or more.
- the settling time means the time for the lyocell material to fall to the bottom of the container after the lyocell material is put into a container (eg, beaker) filled with water (for a specific measurement method, refer to an embodiment to be described later) .
- the length of the tow used in measuring the settling time (eg, the length of the longest dimension of the tow shape) is, for example, 10 cm or less, 9 cm or less, 8 cm or less, or 7 cm or less. , 6 cm or less or 5 cm or less, and the lower limit may be 1 cm or more, 2 cm or more, 3 cm or more, 4 cm or more, or 5 cm or more.
- the cutting size (length) may have an error within ⁇ 1 cm, ⁇ 0.5 cm, or ⁇ 0.1 cm.
- the height of the water filled in the container may be 12 to 13 cm or about 12.5 cm. At this time, the height may have an error within ⁇ 1 cm, ⁇ 0.5 cm, or ⁇ 0.1 cm.
- the lyocell material of the present application may have a hydrophobic surface through emulsion coating.
- the settling time may be adjusted according to the content (% by weight) of the emulsion in the material.
- the settling time is 6.5 seconds or more, 7.0 seconds or more, 7.5 seconds or more, 8.0 seconds or more, 8.5 seconds or more, or 9.0 seconds. It may be 9.5 seconds or more, or 10 seconds or more, and may be 15 seconds or less, 14 seconds or less, 13 seconds or less, 12 seconds or less, 11 seconds or less, or 10 seconds or less.
- the sedimentation characteristics as described above may also be expressed as a sedimentation rate.
- the lyocell material of the present application may have a sedimentation rate in water of 2.1 cm/sec or less.
- a specific example of this speed can be calculated according to the above-mentioned time and water height.
- the lyocell material is a lyocell multi-filament to which a crimp is applied; and an emulsion coated on the lyocell multifilament. Since the description of the lyocell filament, the emulsion and the material containing the same is the same as that described above, it will be omitted.
- a lyocell material exhibiting the above sedimentation properties may be used in a filter for smoking articles.
- the present application relates to a method for manufacturing a lyocell material. Through the method, it is possible to manufacture the above-described lyocell material for a smoking article filter.
- the lyocell material to which the hydrophobic emulsion is applied When the lyocell material to which the hydrophobic emulsion is applied is manufactured as a filter for smoking articles, it may delay the absorption of moisture instantaneously.
- the emulsion of the present application since the emulsion of the present application has high compatibility with the binder, physical properties (eg, hardness or resistance to drawing) required for various smoking articles (eg, cigarettes) can be implemented.
- the manufacturing method of the lyocell material includes the steps of emulsion-processing the lyocell multi-filaments; and crimping the lyocell multifilaments.
- the emulsion includes at least (a) an esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol, and (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms.
- the emulsion treatment may be performed, for example, by spraying the emulsion of the above-described composition onto the lyocell filaments or immersing the lyocell filaments in the emulsion.
- the method of the present application including the emulsion treatment may be performed such that the content of the oil agent (eg, OPU (wt%)) in the lyocell material satisfies a predetermined range described later.
- the crimp applying step may be performed by, for example, applying steam and/or pressure to the lyocell multi-filaments.
- a method for manufacturing a lyocell material according to the specific application of the present application including an emulsion treatment step and a crimp imparting step, will be described in more detail below.
- the method of the present application may be performed by including one or more of the steps described below.
- This step is a step of spinning a lyocell spinning dope containing lyocell cellulose (or cellulose pulp) and N-methylmorpholine-N-oxide (NMMO).
- cellulose acetate filters are pointed out as the main cause of microplastics.
- the amine oxide-based solvent used in the manufacture of Lyocell fibers is recyclable and biodegradable upon disposal, the Lyocell material does not generate any contaminants in its production process.
- lyocell tow is biodegraded and removed within a relatively short time, lyocell is a more environmentally friendly material than cellulose acetate.
- the content of cellulose in the spinning dope may be 5 to 15% by weight based on 100% by weight of the total weight of the dope. If the content of cellulose is too small, it is difficult to implement the characteristics of lyocell fiber, and if the content exceeds the above range, it is difficult to dissolve in the solvent.
- the content of cellulose in the spinning dope may be 6% by weight or more, 7% by weight or more, 8% by weight or more, 9% by weight or more or 10% by weight or more, and the upper limit is, for example, 14% by weight or less , 13 wt% or less, 12 wt% or less, 11 wt% or less, 10 wt% or less, or 9 wt% or less.
- the spinning dope may include an N-methylmorpholine-N-oxide (NMMO) aqueous solution.
- NMMO N-methylmorpholine-N-oxide
- the aqueous solution may include, for example, 80 to 95 weight ratio of N-methylmorpholine-N-oxide and 5 to 20 weight ratio of water in consideration of the degree of dissolution of cellulose and process temperature.
- the cellulose or cellulose pulp may have an alpha-cellulose content of 85 to 97% by weight based on 100% by weight of total cellulose.
- the degree of polymerization (DPw) of the cellulose may be 600 to 1700.
- the shape of the nozzle for discharging the spinning dope is not particularly limited.
- a donut shaped spinneret may be used.
- the nozzle temperature of the spinneret can be appropriately selected by a person skilled in the art. Considering that the discharge may not be performed well while the viscosity of the spinning dope varies depending on the spinning temperature, the spinning temperature may be, for example, at a temperature of 100 ° C to 120 ° C or less or 100 ° C to 110 ° C or less. .
- the step of spinning the spinning dope may be performed under controlled spinning conditions such that the single fineness of the filament may be 1.5 denier to 8.0 denier or less.
- the single fineness of the filament forming the lyocell material may satisfy 1.5 to 8.0 denier by appropriately controlling at least one spinning condition among the discharge amount of the spinning dope and the spinning speed.
- the single fineness of the filament means the fineness of one all monofilament separated from the multifilament.
- the single fineness of the filament may be, for example, 7.5 denier or less, 7.0 denier or less, 6.5 denier or less, 6.0 denier or less, 5.5 denier or less, 5.0 denier or less, or 4.5 denier or less.
- the lower limit may be, for example, 2.0 denier or more, 2.5 denier or more, 3.0 denier or more, 3.5 denier or more, 4.0 denier or more, 4.5 denier or more, 5.0 denier or more, 5.5 denier or more, or 6.0 denier or more. Satisfying the above range may be more advantageous in implementing stable resistance to suction and securing fairness of a filter for smoking articles.
- the spinning dope discharged through the spinneret may undergo a coagulation step to be described later.
- the spun lyocell spinning dope is solidified, and lyocell multifilaments may be obtained.
- a method of contacting the spinning dope with air and/or a coagulating solution may be used for the coagulation.
- the solidification may include a first solidification step of supplying cooling air to the spun lyocell dope; and a second coagulation step of coagulating the first coagulated spinning dope into a coagulating solution.
- the lyocell dope discharged from the spinneret may be primarily solidified in the space (air gap section) between the spinneret and the coagulation bath. Cooling air may be supplied to the air gap section from the inside of the nozzle to the outside, for example, from an air cooling unit located inside the nozzle.
- primary solidification may be performed by a so-called air quenching method or means known in the related art.
- the upper temperature limit of the cooling air used for primary solidification may be, for example, 15 °C or less.
- the cooling air may be air having a temperature of 14 °C or less, 13 °C or less, 12 °C or less, 11 °C or less, or 10 °C or less.
- the lower limit of the cooling air may be determined in consideration of spinning processability and/or cross-sectional uniformity of filaments. For example, when the temperature of the cooling air is less than 4° C., the spinneret surface is cooled, the surface of the filament becomes non-uniform, and spinning processability is also reduced. Considering this, the cooling air may be 5 °C or higher, 6 °C or higher, 7 °C or higher, 8 °C or higher, or 9 °C or higher.
- the degree to which the cooling air is supplied may be adjusted in consideration of sufficient coagulation, spinning processability, and effects on physical properties of the filament. For example, it may be supplied to the derived spinning dope at an air volume of 70 to 300 Nm 3 /h. More specifically, the air volume may be 100 Nm 3 /h or more or 150 Nm 3 /h or more, and the upper limit of the air volume may be, for example, 250 Nm 3 /h or less or 200 Nm 3 /h or less.
- the cooled spinning dope may be supplied to a coagulation bath or bath containing a coagulating solution (secondary coagulation).
- a coagulating solution for proper coagulation, the temperature of the coagulating liquid may be, for example, 30 °C or less or 25 °C or less. And, the temperature of the coagulation solution may be 10 °C or higher, 15 °C or higher, or 20 °C or higher. When the temperature is maintained, the solidification rate can be appropriately maintained.
- the kind of coagulation solution for the secondary coagulation as described above is not particularly limited.
- the coagulation solution may contain at least one of water and N-methylmorpholine-N-oxide (NMMO).
- NMMO N-methylmorpholine-N-oxide
- the content of water in the coagulating solution may be 60 to 90% by weight and the content of NMMO may be 10 to 40% by weight.
- the coagulating solution may include 70 to 80% by weight of water and 20 to 30% by weight of NMMO.
- the concentration of this coagulating liquid can be controlled to be maintained during the manufacturing process using a sensor or the like.
- NMMO and/or other impurities remaining in the filament may be removed by such washing.
- a method of performing water washing is not particularly limited.
- water washing may be performed by introducing the coagulated lyocell multifilaments into a water washing tank using a traction roller.
- washing may be performed in a manner in which washing liquid is sprayed while moving to the next step by the traction roller.
- the washing liquid may contain water and may further contain known additives.
- the washing liquid may be used after being adjusted to a temperature of 100 °C or less.
- This step is a step of applying the above-mentioned emulsion to the surface of the filament.
- the friction applied to the filament is reduced through the emulsion treatment, and the crimp can be well formed in the crimp applying step described later.
- the tanning process when it is performed twice or more, it may be referred to as a first tanning process and a second tanning process depending on the sequence.
- the emulsion treatment may be performed by immersing the multifilaments in a bath filled with emulsion so that the multifilaments are completely immersed in the emulsion.
- emulsion treatment may be performed in a manner in which emulsion liquid is sprayed in the process of moving to the next step by a traction roller.
- a process of squeezing the emulsion on the surface of the multifilaments with rolls located before and/or after the emulsion treatment step is added so that the amount of emulsion applied to the multifilaments can be constant. may be made with
- the emulsion treatment may be performed so that the content of the oil (OPU: oil pick up ratio (wt%)) satisfies 2.0 wt% or more based on at least 100 wt% of the multifilament treated with the tanning agent.
- OPU oil pick up ratio
- It may be a cell multifilament or a lyocell multifilament to which a binder described later is applied along with the above emulsion treatment.
- the lyocell multifilaments treated with an emulsion and/or binder as described above may be crimped.
- the content of the emulsion in the multifilament subjected to at least tanning treatment is 2.5 wt% or more, 3.0 wt% or more, 3.5 wt% or more, 4.0 wt% or more, 4.5 wt% or more, 5.0 wt% or more, 5.5 wt% or more, 6.0% or more, 6.5% or more, 7.0% or more, 7.5% or more, 8.0% or more, 8.5% or more, 9.0% or more or 9.5% or more.
- the upper limit is, for example, 15.0 wt% or less, 14.5 wt% or less, 14.0 wt% or less, 13.5 wt% or less, 13.0 wt% or less, 12.5 wt% or less, 12.0 wt% or less, 11.5 wt% or less, 11.0 10.5 wt% or less, 10 wt% or less, 9.5 wt% or less, 9.0 wt% or less, 8.5 wt% or less, 8.0 wt% or less, 7.5 wt% or less, 7.0 wt% or less, 6.5 wt% or less, 6.0 5.5 wt% or less, 5.0 wt% or less, 4.5 wt% or less, 4.0 wt% or less, or 3.5 wt% or less.
- the content may refer to a dry weight after evaporation of a solvent (eg, water) or a liquid component that may be included in the emulsion
- the hydrophilic properties of the lyocell material can be supplemented, and, as will be described later, excessive reduction in hardness of the lyocell filter due to moisture or saliva penetration can be suppressed.
- drying of the emulsion may be performed after the above emulsion treatment.
- one or more of the above-described steps may be controlled so that the single fineness of the filament constituting the lyocell multifilament may be 1.5 to 8.0 denier.
- the single fineness of the filament means the fineness of one all monofilament separated from the multifilament.
- the single fineness of the filament may be, for example, 7.5 denier or less, 7.0 denier or less, 6.5 denier or less, 6.0 denier or less, 5.5 denier or less, 5.0 denier or less, or 4.5 denier or less.
- the lower limit may be, for example, 2.0 denier or more, 2.5 denier or more, 3.0 denier or more, 3.5 denier or more, 4.0 denier or more, 4.5 denier or more, 5.0 denier or more, 5.5 denier or more, or 6.0 denier or more. Satisfying the above range may be more advantageous in implementing stable resistance to suction and securing fairness of a filter for smoking articles.
- the step to be controlled to secure the above-described single fineness range may be the above-described spinning step.
- all of the above-described spinning, coagulation, water washing, and emulsion treatment steps may be controlled so as to secure the above-mentioned single fineness range.
- the crimping step is a step of applying steam and/or roller pressure to the emulsion-treated lyocell multifilaments to obtain crimped tow, and may be referred to as a so-called crimping step. .
- Waves may be imparted to multifilaments through crimping, and the fibers may have bulky characteristics.
- Crimping can be performed using a known crimping device, such as one comprising a stuffer box and/or a steam box, and usable crimping devices include, for example, the steam pressure and It is not particularly limited as long as it is a device capable of imparting roll pressure.
- the crimp imparting step may be performed by first supplying steam to the lyocell multifilaments to preheat and swell the multifilaments, and then pressing the multifilaments with a press roller to form wrinkles in the multifilaments.
- a steam box may be used to supply steam, and this steam box may be located in front of the crimping device.
- the crimp applying step may be performed in a manner in which multi-filament pressurization by a press roller and steam application are simultaneously performed.
- the step of applying the crimp may be performed by first supplying steam to the lyocell multifilaments to preheat and swell the multifilaments, then pressurizing the multifilaments by a press roller and applying steam at the same time.
- the crimp applying step may be performed while applying steam of 0.1 to 2.0 kgf/cm 2 to the multi-filaments before inputting a crimp device (specifically, a press roller).
- a crimp device specifically, a press roller.
- steam of 0.2 kgf/cm 2 or more, 0.3 kgf/cm 2 or more, 0.4 kgf/cm 2 or more, 0.5 kgf/cm 2 or more, or 0.6 kgf/cm 2 or more is steam box can be provided by
- steam of 1.5 kgf/cm 2 or less, 1.4 kgf/cm 2 or less, 1.3 kgf/cm 2 or less, 1.2 kgf/cm 2 or less, 1.1 kgf/cm 2 or less, or 1.0 kgf/cm 2 or less may be provided.
- the crimp may not be smoothly formed. And, if it exceeds the above range, the flexibility of the filament is increased, and excessive crimp is applied to the filament in the crimp device, so that it may not pass through the crimp device.
- the crimp imparting step may be performed while applying a pressure of 1.5 to 4.0 kgf/cm 2 to the multifilaments introduced into the crimp device using a roller.
- a pressure of 1.5 to 4.0 kgf/cm 2 to the multifilaments introduced into the crimp device using a roller.
- a pressure of kgf/cm 2 or more, 2.3 kgf/cm 2 or more, 2.4 kgf/cm 2 or more, or 2.5 kgf/cm 2 or more may be applied to the multifilaments through a press roller.
- roller pressure in the above range If it is less than the desired number of crimps, it may not be formed sufficiently. In addition, when the roller pressure exceeds the above range, the pressing force may be too strong so that the filament may not be smoothly introduced into the crimping device or may not pass through the stuffer box. Creases may be formed in the multifilament by the press roller providing the pressure.
- a doctor blade applying a predetermined pressure to the multi-filament may be applied in the crimp applying step.
- the doctor blade contributes to the number of crimps (which affects tow quality and filter performance) by controlling the residence time of the filaments put into the crimper stuffer box.
- Such a doctor blade may be located, for example, in a moving path of multifilaments discharged from a roller pressing point after being pressed by the above-described roller.
- the crimp imparting step may be performed while applying a pressure of 0.1 to 2.0 kgf/cm 2 to the multifilaments passing through the rollers of the crimp device using a doctor blade. More specifically, the pressure applied by the doctor blade may be 0.2 kgf/cm 2 or more, 0.3 kgf/cm 2 or more, 0.4 kgf/cm 2 or more, or 0.5 kgf/cm 2 or more.
- the upper limit of the pressure is, for example, 1.5 kgf/cm 2 or less, 1.4 kgf/cm 2 or less, 1.3 kgf/cm 2 or less, 1.2 kgf/cm 2 or less, 1.1 kgf/cm 2 or less, or 1.0 kgf/cm It can be 2 or less.
- the crimp imparting step may be performed at a temperature in the range of 120 to 250 °C. If the temperature is too low, the shape stabilization effect of the crimp is not good, and if the temperature is too high, the concentration of oil and fat in the stuffer box increases, making it difficult to form the crimp. Accordingly, the temperature can be appropriately controlled in the range of 130 °C or more, 140 °C or more, or 150 °C or more, and 200 °C or less, 180 °C or less, or 160 °C or less in consideration of the above-mentioned steam pressure.
- the method may further include coating the binder on the emulsion-treated lyocell multifilaments or the lyocell multifilaments obtained by the crimp imparting step (ie, crimp tow).
- Binders are used when making filters for smoking articles with tow.
- the binder can increase the hardness of a filter for a smoking article made of tow to prevent a filter from being caught in a filter manufacturing process or a cigarette manufacturing process.
- a method of coating the binder on the lyocell crimp tow is not particularly limited.
- the emulsion treatment may be performed by immersing the crimp tow in a bath filled with a binder (or a binder solution) so that the multifilaments are completely immersed in the binder.
- the binder coating may be performed by spraying (or denominator) a binder (or binder solution) using a nozzle.
- the binder may further include a solvent in addition to the above components.
- the solvent may include, for example, water, ethanol, propylene glycol and/or glycerin, but is not limited thereto.
- the binder (or binder solution) includes a solvent, the solvent content is, for example, about 20 to 80% by weight or 40 to 60% by weight based on 100% by weight of the total binder (or binder solution). can include
- the binder treatment may be performed at a level capable of achieving the purpose of the above-described binder treatment.
- the binder treatment may be performed so that the content of the binder is 20% by weight or less, for example, 8 to 15% by weight based on 100% by weight of the emulsion and binder - treated multifilaments.
- the content may refer to a dry weight after evaporation of a solvent or liquid component that may be included in the binder.
- drying of the binder may proceed.
- the drying temperature is not particularly limited, but drying may be performed at room temperature (about 10 to 35° C.), for example.
- Appropriate post-processing may further be performed after applying the crimp.
- a secondary tanning treatment (g1) may be further performed.
- the secondary emulsion treatment can prevent static electricity from being generated in the tow and impart flexibility to the tow.
- the secondary tanning treatment may be performed in the same manner as or in accordance with the above-described (d) tanning treatment step.
- the secondary tanning treatment may be performed by treating the lyocell tow that has undergone a process by a crimper with an emulsifying agent.
- This can advantageously serve several processes performed in the manufacture of filters for smoking articles.
- the secondary emulsion treatment not only allows the fibers and filters to spread well in air in the spreading process, but also prevents the fibers from being cut by holding the lyocell chains in the stretching process.
- it is necessary to use a component derived from a fatty acid having a predetermined number of carbon atoms or more.
- the secondary emulsion treatment as described above may be performed before or after the binder treatment. Alternatively, the secondary emulsion treatment may be performed regardless of the presence or absence of binder treatment.
- the second tanning treatment process may be performed so that the content of the emulsion or the OPU content in the material satisfies the range as described above.
- a drying treatment may be additionally performed.
- the drying may be performed at a temperature ranging from 100 to 130 °C, for example.
- the drying treatment method or method is not particularly limited, and a known technique may be used. For example, it can be achieved by applying hot air to the tow or passing or leaving the tow in a temperature-controlled room for a certain period of time.
- tow having 20 to 50 crimps per inch may be provided by the method including the crimp imparting process as described above.
- the number of crimps may be 25 ea / inch or more, 30 ea / inch or more, 35 ea / inch or more, 40 ea / inch or more, or 45 ea / inch or more, and the upper limit is, for example, 45 ea / inch or less, 40 ea / inch or less, 35 ea / inch or less, 30 ea / inch or less, or 25 ea / inch or less.
- the number of crimps and their uniformity can be controlled through pressure and temperature conditions related to the crimping step described above.
- the manufacturing method of the present application can provide tow of a fineness suitable for manufacturing a filter for a smoking article and securing its function.
- the total fineness of the tow is a factor related to the amount of filament that can be introduced into the filter wrapper. If the total fineness is too low, a sufficient amount of filament cannot be filled into the filter wrapper, resulting in a lower resistance to attraction. In addition, if the total fineness is too high, the amount filled in the filter wrapper is too large and the filter wrapper bursts, or it becomes difficult to adjust the amount of tow filling required for the filter to realize the suction resistance.
- crimp tow having a total fineness of 15,000 to 45,000 denier may be provided.
- the lower limit of the total fineness may be, for example, 16,000 or more, 17,000 or more, 18,000 or more, 19,000 or more, or 20,000 or more
- the upper limit may be, for example, 40,000 or less, 35,000 or less, 30,000 or less, or 25,000 or less. there is. More specific numerical values are the same as those described above. If the total fineness of the tow is out of the above range, the manufacturing process of the filter for smoking articles is not good (continuous process by cutting is not possible), and the amount of tow filled in the filter wrapper is too small or too large when manufacturing the filter for smoking articles. However, it is difficult to secure sufficient filter properties (e.g., resistance to suction).
- the total fineness of the tow as described above may be determined by the single fineness of the filaments and the number of crimps.
- the single fineness and the number of crimps are controlled as described above, it is possible to secure the above-described total fineness of the tow suitable for manufacturing a filter for a smoking article and securing its function.
- the lyocell material prepared by the above method may be used in a filter for smoking articles.
- the present application relates to a filter for smoking articles.
- the filter for the smoking article includes a lyocell material, and the lyocell material may be the same as described above.
- the filter for smoking articles of the present application is a filter for smoking articles including a lyocell material, wherein the lyocell material includes lyocell multifilaments to which a crimp is applied; and an emulsion coated on the lyocell multifilament.
- the emulsion includes at least (a) an esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol, and (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms.
- the lyocell material includes the emulsion in an amount of 2.0% by weight or more based on 100% by weight of the total lyocell material.
- descriptions of oil agent components and contents according to specific examples of the present application are the same as those described above.
- the single fineness of the filament constituting the lyocell multi-filament may be 1.5 to 8.0 denier. Specific numerical values are the same as those described above.
- the crimped lyocell multifilament may be crimp tow having a total fineness of 15,000 to 45,000 denier. Specific numerical values are the same as those described above.
- the crimp-applied lyocell multifilament may have 20 to 50 crimps per inch. Specific numerical values are the same as those described above.
- the filter for the smoking article may further include a binder between surfaces of the crimped lyocell multifilaments or between the crimped lyocell multifilaments.
- the binder increases the hardness of a filter for a smoking article made of tow to prevent filter jamming in a filter manufacturing process or a cigarette manufacturing process. Description of the type, component and content of the usable binder is the same as described above.
- the filter for the smoking article may further include a wrapper (which may be referred to as a wrapper paper, filter paper, or filter wrapper).
- the wrapper can be a porous paper or a non-porous paper capable of wrapping the aforementioned lyocell tow (i.e. at least tanned, crimped tow) and retaining the filter shape (eg cylindrical or cylindrical). there is.
- the wrapper when a porous wrapper is used, the wrapper may have a porosity of 10 to 50,000 CU (Coresta Unit).
- the lower limit of the porosity of the paper is, for example, 1000 CU or more, 5000 CU or more, 10000 CU or more, 15000 CU or more, 20000 CU or more, 25000 CU or more, 30000 CU or more, 35000 CU or more, 40000 CU or more, or 45000 CU or more
- the upper limit may be, for example, 45000 CU or less, 40000 CU or less, 35000 CU or less, 30000 CU or less, 25000 CU or less, or 20000 CU or less.
- the sheet may have a porosity within the range of 22,000 to 26,000 CU or 23,000 to 25,000 CU.
- the basis weight of the wrapper may be 15 to 60 g/cm 2 .
- the lower limit of the basis weight of the paper is, for example, 20 g/cm 2 or more, 25 g/cm 2 or more, 30 g/cm 2 or more, 35 g/cm 2 or more, 40 g/cm 2 or more, or 45 g /cm 2 or more, 50 g/cm 2 or more, or 55 g/cm 2 or more
- the upper limit is, for example, 55 g/cm 2 or less, 50 g/cm 2 or less, 45 g/cm 2 or less , 40 g/cm 2 or less, 35 g/cm 2 or less, 30 g/cm 2 or less, 25 g/cm 2 or less, or 20 g/cm 2 or less.
- the paper is 16 g/cm 2 or more, 17 g/cm 2 or more, 18 g/cm 2 or more, 19 g/cm 2 or more, 20 g/cm 2 or more , or 21 g/cm 2 or more, and may have a basis weight of 25 g/cm 2 or less, 24 g/cm 2 or less, 23 g/cm 2 or less, 22 g/cm 2 or less, or 21 g/cm 2 or less.
- the filter for smoking articles may have a predetermined shape and size.
- the filter may have a rod shape. More specifically, the filter for the smoking article may have a cylindrical shape.
- the filter may have a length of, for example, 10 to 50 mm.
- the length of the filter may have a lower limit of 15 mm or more, 20 mm or more, 25 mm or more, 30 mm or more, 35 mm or more, 40 mm or more, or 45 mm or more, and an upper limit of 45 mm or less, 40 mm or more.
- the filter having the length may have a circular cross section, and the circumference of the circular cross section may be 10 to 40 mm.
- the circumference of the filter may have a lower limit of 15 mm or more, 20 mm or more, 25 mm or more, 30 mm or more, or 35 mm or more, and an upper limit of 35 mm or less, 30 mm or less, or 25 mm or less. , 20 mm or less or 15 mm or less.
- the smoking article filter may satisfy a diameter retention rate (or hardness retention rate) of 85% or more before water injection calculated according to Equation 1-1 below.
- the diameter of the initial filter or the length by which the filter is pressed can be confirmed through cross-sections of both ends of the filter of a predetermined length.
- the diameter (or hardness) retention rate of the filter before water injection calculated according to Equation 1-1 above is 86% or more, 87% or more, 88% or more, 89% or more, 90% or more, 91% or more, 92% or more. % or more, 93% or more, 94% or more or 95% or more. If the diameter (or hardness) retention rate (%) of the filter before water injection according to Equation 1-1 is less than the above range, it means that the hardness of the filter is not sufficient.
- the filter for the smoking article may satisfy a diameter retention rate (or hardness retention rate) of 80% or more after water injection, which is expressed according to Equation 1-2 below.
- the diameter of the initial filter or the length by which the filter is pressed can be confirmed through cross-sections of both ends of the filter of a predetermined length.
- the type of water to be injected is not particularly limited.
- the water may be distilled water or tap water.
- the amount of water injected may be 20 ⁇ l.
- the amount of water injected may have an error within ⁇ 5 ⁇ l, within ⁇ 4 ⁇ l, within ⁇ 3 ⁇ l, within ⁇ 1 ⁇ l, within ⁇ 0.5 ⁇ l, or within ⁇ 0.1 ⁇ l.
- the diameter retention rate of Equation 1-2 may be measured 5 minutes after water is injected into the filter. At this time, the time for measuring the diameter retention may show an error within ⁇ 3 minutes, within ⁇ 2 minutes, within ⁇ 1 minute, or within ⁇ 30 seconds.
- the injection of water into the filter is performed by dividing and injecting water at equal intervals in the longitudinal direction of the filter (the direction of the dimension having the longest length among the shapes of the filter. Or, if the filter is symmetrical, the longitudinal direction of the axis of symmetry). It can be done. For example, when 20 ⁇ l of water is injected, the filter is divided into 3 parts in the filter length direction (the direction of the dimension having the longest length among the filter shapes), and a certain point (for example, the center) of each of the 3 parts is divided into three parts. Alternatively, 6 to 7 ⁇ l of water can be injected into each area.
- the diameter (or hardness) retention rate of the filter after water injection calculated according to Equation 1-2 above is 81% or more, 82% or more, 83% or more, 84% or more, 85% or more, 86% or more, 87% or more. % or more, 88% or more, 89% or more, 90% or more, 91% or more or 92% or more. If the retention rate of the diameter (or hardness) of the filter after water injection according to Equation 1-2 is less than the above range, it means that the change in hardness of the filter due to water penetration is large. As in the experiments described later, since the oil agent is applied to the filter for smoking articles of the present application as described above, hardness change is suppressed even after water injection, and thus a high level of diameter (or hardness) retention can be exhibited.
- the filter for the smoking article may have a water decay rate calculated according to Equation 2 of 8.0% or less.
- Water disintegration rate (%) ⁇ (filter diameter retention rate before water injection - filter diameter retention rate after water injection)/(filter diameter retention rate before water injection) ⁇ 100
- Equation 2 the filter diameter retention rate before water injection can be calculated according to Equation 1-1, and the filter diameter retention rate after water injection can be calculated according to Equation 1-1.
- the water decay rate calculated according to Equation 2 is 7.5% or less or 7.0% or less, specifically 6.5% or less, 6.0% or less, 5.5% or less, 5.0% or less, 4.5% or less, 4.0% or less, 3.5% or less, 3.0% or less, 2.5% or less or 2.0% or less.
- the water disintegration degree it means that the degree of collapse of the filter due to hardness change is not large even when a predetermined amount of water penetrates into the filter.
- the filter for a smoking article of the present application can exhibit a low degree of moisture decay because the emulsion is applied as described above.
- the diameter change (hardness change) and moisture disintegration according to Equation 1-1, Equation 1-2 and Equation 2 may be measured for a rod-shaped filter having a weight of 50 mg or more.
- the weight of the filter may have a lower limit of, for example, 100 mg or more, 150 mg or more, or 200 mg or more, and an upper limit of 500 mg or less, 450 mg or less, 400 mg or less, 350 mg or less, or 300 mg. or less, 250 mg or less, or 200 mg or less.
- the present application relates to a filter for a smoking article that exhibits a characteristic of not significantly decreasing hardness even when moisture permeates, that is, can effectively prevent the filter from being lowered in hardness due to smoker's saliva or the like.
- the above properties can be calculated according to Equations 1-1, 1-2 and 2 below.
- the filter for smoking articles may have a diameter retention rate (or hardness retention rate) of 85% or more before water injection calculated according to Equation 1-1 below.
- the diameter of the initial filter or the length by which the filter is pressed can be confirmed through cross-sections of both ends of the filter of a predetermined length.
- the diameter (or hardness) retention rate of the filter before water injection calculated according to Equation 1-1 above is 85% or more, 86% or more, 87% or more, 88% or more, 89% or more, 90% or more, 91% or more. % or more, 92% or more, 93% or more, 94% or more or 95% or more. If the diameter (or hardness) retention rate (%) of the filter before water injection according to Equation 1-1 is less than the above range, it means that the hardness of the filter is not sufficient.
- the filter for smoking articles may have a diameter retention rate (or hardness retention rate) of 80% or more after water injection, which is expressed according to Equation 1-2 below.
- the diameter of the initial filter or the length by which the filter is pressed can be confirmed through cross-sections of both ends of the filter of a predetermined length.
- the type of water to be injected is not particularly limited.
- the water may be distilled water or tap water.
- the amount of water injected may be 20 ⁇ l.
- the amount of water injected may have an error within ⁇ 5 ⁇ l, within ⁇ 4 ⁇ l, within ⁇ 3 ⁇ l, within ⁇ 1 ⁇ l, within ⁇ 0.5 ⁇ l, or within ⁇ 0.1 ⁇ l.
- the diameter retention rate of Equation 1-2 may be measured 5 minutes after water is injected into the filter. At this time, the time for measuring the diameter retention may show an error within ⁇ 3 minutes, within ⁇ 2 minutes, within ⁇ 1 minute, or within ⁇ 30 seconds.
- the injection of water into the filter is performed by dividing and injecting water at equal intervals in the longitudinal direction of the filter (the direction of the dimension having the longest length among the shapes of the filter. Or, if the filter is symmetrical, the longitudinal direction of the axis of symmetry). It can be done. For example, when 20 ⁇ l of water is injected, the filter is divided into 3 parts in the filter length direction (the direction of the dimension having the longest length among the filter shapes), and a certain point (for example, the center) of each of the 3 parts is divided into three parts. Alternatively, 6 to 7 ⁇ l of water can be injected into each area.
- the diameter (or hardness) retention rate of the filter after water injection calculated according to Equation 1-2 above is 81% or more, 82% or more, 83% or more, 84% or more, 85% or more, 86% or more, 87% or more. % or more, 88% or more, 89% or more, 90% or more, 91% or more or 92% or more. If the diameter (or hardness) retention rate of the filter after water injection according to Equation 1-2 is less than the above range, it means that the change in hardness of the filter due to water penetration is large. As in the experiments described later, since the oil agent is applied to the filter for smoking articles of the present application as described above, hardness change is suppressed even after water injection, and thus a high level of diameter (or hardness) retention can be exhibited.
- the filter for the smoking article may have a water decay rate calculated according to Equation 2 of 8.0% or less.
- Water disintegration rate (%) ⁇ (filter diameter retention rate before water injection - filter diameter retention rate after water injection)/(filter diameter retention rate before water injection) ⁇ 100
- Equation 2 the filter diameter retention rate before water injection can be calculated according to Equation 1-1, and the filter diameter retention rate after water injection can be calculated according to Equation 1-1.
- the water decay rate calculated according to Equation 2 is 7.5% or less or 7.0% or less, specifically 6.5% or less, 6.0% or less, 5.5% or less, 5.0% or less, 4.5% or less, 4.0% or less, 3.5% or less, 3.0% or less, 2.5% or less or 2.0% or less.
- the water disintegration degree it means that the degree of collapse of the filter due to hardness change is not large even when a predetermined amount of water penetrates into the filter.
- the filter for a smoking article of the present application can exhibit a low degree of moisture decay because the emulsion is applied as described above.
- a filter for a smoking article for which measurements related to Equations 1-1, 1-2, and 2 above are made may have a predetermined shape and size.
- the filter may have a rod shape. More specifically, the filter for the smoking article may have a cylindrical shape.
- the filter may have a length of, for example, 10 to 50 mm.
- the length of the filter may have a lower limit of 15 mm or more, 20 mm or more, 25 mm or more, 30 mm or more, 35 mm or more, 40 mm or more, or 45 mm or more, and an upper limit of 45 mm or less, 40 mm or more.
- the filter having the length may have a circular cross section, and the circumference of the circular cross section may be 10 to 40 mm.
- the circumference of the filter may have a lower limit of 15 mm or more, 20 mm or more, 25 mm or more, 30 mm or more, or 35 mm or more, and an upper limit of 35 mm or less, 30 mm or less, or 25 mm or less. , 20 mm or less or 15 mm or less.
- the filter for the smoking article may include lyocell tow (ie, crimped lyocell multifilaments), an emulsion coated on the lyocell multifilaments, and a filter wrapper. Since the description of the lyocell tow and the emulsion is the same as that described above, it will be omitted.
- the wrapper may be a porous paper or a non-porous paper capable of enclosing the aforementioned lyocell tow (i.e. at least tanned, crimped tow) and retaining the filter shape (eg cylindrical or cylindrical).
- the wrapper when a porous wrapper is used, the wrapper may have a porosity of 10 to 50,000 CU (Coresta Unit).
- the lower limit of the porosity of the paper is, for example, 1000 CU or more, 5000 CU or more, 10000 CU or more, 15000 CU or more, 20000 CU or more, 25000 CU or more, 30000 CU or more, 35000 CU or more, 40000 CU or more, or 45000 CU or more
- the upper limit may be, for example, 45000 CU or less, 40000 CU or less, 35000 CU or less, 30000 CU or less, 25000 CU or less, or 20000 CU or less.
- the sheet may have a porosity within the range of 22,000 to 26,000 CU or 23,000 to 25,000 CU.
- the basis weight of the wrapper may be 15 to 60 g/cm 2 .
- the lower limit of the basis weight of the paper is, for example, 20 g/cm 2 or more, 25 g/cm 2 or more, 30 g/cm 2 or more, 35 g/cm 2 or more, 40 g/cm 2 or more, or 45 g /cm 2 or more, 50 g/cm 2 or more, or 55 g/cm 2 or more
- the upper limit is, for example, 55 g/cm 2 or less, 50 g/cm 2 or less, 45 g/cm 2 or less , 40 g/cm 2 or less, 35 g/cm 2 or less, 30 g/cm 2 or less, 25 g/cm 2 or less, or 20 g/cm 2 or less.
- the paper is 16 g/cm 2 or more, 17 g/cm 2 or more, 18 g/cm 2 or more, 19 g/cm 2 or more, 20 g/cm 2 or more , or 21 g/cm 2 or more, and may have a basis weight of 25 g/cm 2 or less, 24 g/cm 2 or less, 23 g/cm 2 or less, 22 g/cm 2 or less, or 21 g/cm 2 or less.
- the diameter change (hardness change) and moisture disintegration according to Equation 1-1, Equation 1-2 and Equation 2 may be measured for a rod-shaped filter having a weight of 50 mg or more.
- the weight of the filter may have a lower limit of, for example, 100 mg or more, 150 mg or more, or 200 mg or more, and an upper limit of 500 mg or less, 450 mg or less, 400 mg or less, 350 mg or less, or 300 mg. or less, 250 mg or less, or 200 mg or less.
- the present application is directed to a method of manufacturing a filter for a smoking article.
- the method is a method for manufacturing the above-described filter for a lyocell smoking article, and may be a method including the above-described method for manufacturing a lyocell material.
- a method for manufacturing a filter for a smoking article includes the steps of emulsion treatment of lyocell multifilaments; crimping the lyocell multifilaments; and manufacturing a filter using crimp-applied lyocell multifilaments.
- the emulsion to be treated on the multifilaments includes (a) an esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol, and (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms.
- the lyocell multifilaments included in the smoking article filter include the emulsion in an amount of 2.0% by weight or more based on 100% by weight of the total lyocell multifilaments.
- the lyocell multifilament included in the filter for smoking articles is a multifilament subjected to at least an oil treatment, and for example, the lyocell material is a lyocell multifilament to which a primary emulsion treatment is applied, a primary emulsion treatment and a second emulsion treatment.
- lyocell multifilament to which a tea emulsion treatment is applied, or a lyocell multifilament to which a binder described later is applied along with the above emulsion treatment.
- the lyocell multifilaments treated with an emulsion and/or binder as described above may be crimped. Specific numerical values for the content of the emulsion are the same as those described above.
- the step of manufacturing the filter can be appropriately performed by a person skilled in the art according to a known method.
- the filter may be manufactured in a manner in which a tow-filled wrapper is made into a rod shape.
- the filter can be manufactured by cutting a rod-shaped tow-filled filter paper into an appropriate length. The description of the paper is the same as described above.
- opening of the tow or plasticizer treatment may be additionally performed.
- the present application relates to a smoking article comprising a lyocell material.
- the lyocell material has the same configuration and/or characteristics as described above, and a description thereof is omitted.
- the present application is directed to a smoking article comprising a filter for the smoking article.
- a filter for a smoking article has the same configuration and/or characteristics as described above, and a description thereof is omitted.
- the present application relates to an emulsion that can be applied (eg, coated) to lyocell tow.
- the emulsion of the present application can overcome the hydrophilicity of the surface of the lyocell material for a smoking article filter and improve the degree of hardness reduction of the lyocell material due to moisture.
- the emulsion includes (a) an esterified product of a fatty acid having 16 or more carbon atoms and an aliphatic monohydric alcohol, and (b) an esterified product of sorbitan and a fatty acid having 16 or more carbon atoms.
- the emulsion, as component (c) may further include an alkylene oxide adduct to component (b).
- a lyocell material for a filter for a smoking article that can replace commercially available cellulose acetate (CA) and a filter for a smoking article including the same are provided.
- CA cellulose acetate
- the present application not only provides a lyocell material excellent in manufacturing processability and biodegradability, but also has the effect of improving filter hardness and physical properties of smoking articles (eg, cigarettes).
- a lyocell material was prepared through the same process as described in the preparation example below. Conditions not specifically mentioned are made within the scope of the above description.
- Cellulose pulp having a degree of polymerization (DPw) of 820 and an alpha cellulose content of 93.9% was mixed with a NMMO/H 2 O solvent having a propyl gallate content of 0.01 wt% to prepare a spinning dope for tow having a concentration of 11 wt%. Then, while maintaining the spinning temperature at 110 ° C. in the spinning nozzle, the discharge amount and spinning speed were properly adjusted, and the spinning dope was spun.
- DPw degree of polymerization
- NMMO/H 2 O solvent having a propyl gallate content of 0.01 wt% to prepare a spinning dope for tow having a concentration of 11 wt%.
- the spinning dope on the filament discharged from the spinning nozzle was supplied to the coagulation liquid (having a concentration including 75 wt% of water and 25 wt% of NMMO and having a temperature of about 25 ° C.) in the coagulation bath through an air gap section.
- the cooling air in the air gap section first solidifies the spinning dope at a temperature of 8 ° C and an air volume of 200 Nm3 / h.
- the concentration of the coagulation solution was continuously monitored using a sensor and a refractometer.
- the coagulated lyocell filament was washed with water. Specifically, the filament was introduced into the traction roller, and NMMO remaining in the filament was removed with the washing liquid sprayed from the washing device. Then, the washed filament was immersed in a bath designed with a predetermined emulsion concentration.
- the filament was treated at a pressure of 2 kgf/cm 2 with a nip roll installed in the bath discharge unit, and was put into a crimp machine for wrinkles.
- the steam pressure was supplied to the steam box at 0.5 kgf/cm 2
- the pressure of the crimp device roller was set to 2.5 kgf/cm 2
- the pressure of the doctor blade was set to 0.5 kgf/cm 2 to prepare tow.
- a secondary tanning treatment was performed, and immediately after the treatment, a dried tow product was obtained by passing through a continuous dryer set at 120 ° C.
- the manufactured tow has a single fineness of 3.0 to 3.5 denier, a total fineness of 36,000 to 40,000 denier, and a crimp number of 25 to 35 ea/inch.
- the types (components) and/or the degree of emulsion treatment (O.P.U.) of the emulsions treated in each Example and Comparative Example are different from each other as follows.
- the emulsion-treated lyocell tow was used.
- the emulsion used in the manufacture of tow contains about 60% by weight of isotridecyl stearate, about 22% by weight of sorbitan monooleate, about 16% by weight of polyoxyethylene sorbitan monooleate, and the remaining amount of water. and OPU is 5.6% by weight.
- the emulsion-treated lyocell tow was used.
- the emulsion used in the manufacture of tow contains about 50% by weight of isotridecyl stearate, about 27% by weight of sorbitan monooleate, about 21% by weight of polyoxyethylene sorbitan monooleate and the balance of water,
- the OPU is 5.1% by weight.
- Example 2 The same lyocell tow as in Example 1 was used, except that the OPU was 3.16% by weight.
- Example 2 The same lyocell tow as in Example 1 was used, except that the OPU was 2.15% by weight.
- Lyocell tow was used in the same manner as in the above Preparation Example, except that no emulsion treatment was performed.
- the emulsion-treated lyocell tow was used.
- the emulsion used in the manufacture of tow was JKP-107C, which can be classified as a hydrophilic emulsion, and OPU was 2.1% by weight.
- the JKP-107C contains about 40% by weight or more of polyoxyethylene alkylether, about 10% by weight or more of polyethyleneglycol, about 20% by weight or more of polyethyleneglycol alkylester, about 13% by weight or more of polyoxyethylene alkylphosphate, about 9% by weight or more of dialkyl sulfosuccinate and / or a salt thereof, about It is known to contain at least 3% by weight of Fattyalcohol amine and at least about 5% by weight of water.
- Example 2 The same lyocell tow as in Example 1 was used, except that the OPU was 0.23% by weight.
- the tows of Examples and Comparative Examples were cut to a size of 8 cm.
- the sample tow prepared from Examples and Comparative Examples was put into a beaker filled with 1,000 ml water (at this time, the beaker outer diameter was 108 mm, the height was 158 mm, and the height filled with water was about 12.5 cm), and the tow fell to the bottom of the sample.
- Time (seconds) was measured.
- the settling time shown in the table below is an arithmetic mean value obtained after repeating the above-described experiment three times for sample tow collected from each example or comparative example.
- Example 1 The lyocell tow of Example 1 was wrapped with wrapping paper (porous paper of 24,000 CU, basis weight of about 21 g/cm 2 ), and a filter rod in the form of a cylinder having an axial length of 27 mm and a circumference of 24.22 mm (weight 150-200 mg) was prepared.
- wrapping paper porous paper of 24,000 CU, basis weight of about 21 g/cm 2
- a filter rod was prepared in the same manner as in Example 4, except that the lyocell tow of Example 2 was used.
- a filter rod was prepared in the same manner as in Example 4, except that the lyocell tow of Example 3 was used.
- a filter rod was prepared in the same manner as in Example 4, except that the lyocell tow of Comparative Example 1 was used.
- a filter rod was prepared in the same manner as in Example 4, except that the lyocell tow of Comparative Example 2 was used.
- a filter rod was prepared in the same manner as in Example 4, except that the lyocell tow of Comparative Example 3 was used.
- a filter rod was prepared in the same manner as in Example 4, except that the lyocell tow of Comparative Example 4 was used.
- water eg, distilled water or tap water
- the water injection amount is a value set after the smoker group smokes the tobacco product and then measures the amount of moisture remaining in the filter by itself.
- the change in hardness of the filter due to water penetration into the filter and the degree of collapse of the filter due to moisture can be calculated through the change in the diameter of the filter as follows.
- a DHT 200 TM instrument from Filtrona was used for these measurements.
- Water disintegration rate (%) ⁇ (filter diameter retention rate before water injection - filter diameter retention rate after water injection)/(filter diameter retention rate before water injection) ⁇ 100
- Example 1 Hydrophobic Emulsion 5.6 92.8 89.0 4.09
- Example 6 Hydrophobic emulsion 5.5 91.6 85.9 6.22
- Example 7 Hydrophobic emulsion 3.16 89.2 83.6 6.27
- Example 8 Hydrophobic Emulsion 2.15 87.7 80.8 7.87 Comparative Example 4 Comparative Example 1 - Poor filter manufacturing* Poor filter manufacturing - Comparative Example 5
- Comparative Example 2 Hydrophilic Emulsion 2.1 82.0 76.0 7.32 Comparative Example 6 Comparative Example 3 Hydrophobic emulsion 0.23 Poor filter manufacturing Poor filter manufacturing -
- Poor filter manufacturing This refers to a case in which the tow is not uniformly spread or clumped during the spreading process during filter manufacturing, or the tow is not cut smoothly because hardness is not imparted when cutting with a filter rod.
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Abstract
Description
OPU(wt%)* | 침강시간(단위: 초(s)) | |
실시예 1 | 소수성 유제 5.6 | 9.46 |
실시예 2 | 소수성 유제 5.5 | 8.99 |
실시예 3 | 소수성 유제 3.16 | 7.79 |
실시예 4 | 소수성 유제 2.15 | 6.12 |
비교예 1 | - | 1.35 |
비교예 2 | 친수성 유제 2.1 | 2.02 |
비교예 3 | 소수성 유제 0.23 | 1.58 |
사용된 토우 | OPU(wt%)* | 물 주입 전 지름 변화 (식 1-1, %) |
물 주입 후 지름 변화 (식 1-2, %) |
수분 붕괴도 (식 2, %) |
|
실시예 5 | 실시예 1 | 소수성 유제 5.6 | 92.8 | 89.0 | 4.09 |
실시예 6 | 실시예 2 | 소수성 유제5.5 | 91.6 | 85.9 | 6.22 |
실시예 7 | 실시예 3 | 소수성 유제3.16 | 89.2 | 83.6 | 6.27 |
실시예 8 | 실시예 4 | 소수성 유제2.15 | 87.7 | 80.8 | 7.87 |
비교예 4 | 비교예 1 | - | 필터 제조 불량* | 필터 제조 불량 | - |
비교예 5 | 비교예 2 | 친수성 유제2.1 | 82.0 | 76.0 | 7.32 |
비교예 6 | 비교예 3 | 소수성 유제0.23 | 필터 제조 불량 | 필터 제조 불량 | - |
Claims (37)
- 크림프가 부여된 라이오셀 멀티 필라멘트; 및 상기 라이오셀 멀티 필라멘트에 코팅된 유제를 포함하는 흡연 물품 필터용 라이오셀 소재이고,상기 유제는 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물; 및 (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물을 포함하며,상기 흡연 물품 필터용 라이오셀 소재는 라이오셀 소재 전체 100 중량% 대비 2.0 중량% 이상의 함량으로 상기 유제를 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 1 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물 20 내지 60 중량부를 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 1 항에 있어서,상기 유제는 상기 에스테르화물(b)에 대한 알킬렌옥사이드 부가물(c)을 더 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 1 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, 상기 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물 10 내지 50 중량부를 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 1 항에 있어서,상기 크림프가 부여된 라이오셀 멀티 필라멘트는,15,000 내지 45,000 데니어의 총섬도 및 인치당 20 내지 50 개의 크림프를 갖는,흡연 물품 필터용 라이오셀 소재.
- 제 1 항에 따른 라이오셀 소재를 포함하는 흡연 물품.
- 크림프가 부여된 라이오셀 멀티 필라멘트; 및 상기 라이오셀 멀티 필라멘트에 코팅된 유제를 포함하고,물에서의 침강 시간이 6.0 초 이상인,흡연 물품 필터용 라이오셀 소재(단, 상기 침강 시간은 12 내지 13 cm 높이로 물이 채워진 용기에 10 cm 이하로 커팅된 라이오셀 소재를 투입한 후 상기 라이오셀 소재가 용기 바닥에 낙하하기까지 걸리는 시간을 의미한다).
- 제 7 항에 있어서,상기 흡연 물품 필터용 라이오셀 소재는 라이오셀 소재 전체 100 중량% 대비, 2.0 중량% 이상의 함량으로 상기 유제를 포함하고,상기 유제는 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 및 (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물을 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 8 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물 20 내지 60 중량부를 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 8 항에 있어서,상기 유제는 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물을 더 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 8 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, 상기 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물 10 내지 50 중량부를 포함하는,흡연 물품 필터용 라이오셀 소재.
- 제 7 항에 있어서,상기 라이오셀 멀티 필라멘트는 15,000 내지 45,000 데니어의 총섬도 및 인치당 20 내지 50 개의 크림프를 갖는,흡연 물품 필터용 라이오셀 소재.
- 제 7 항에 따른 라이오셀 소재를 포함하는, 흡연 물품
- 라이오셀 멀티 필라멘트를 유제 처리하는 단계; 및 라이오셀 멀티 필라멘트에 크림프를 부여하는 단계를 포함하는 흡연 물품 필터용 라이오셀 소재의 제조방법이고,상기 유제는 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 및 (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물을 포함하며,상기 흡연 물품 필터용 라이오셀 소재는 라이오셀 소재 전체 100 중량% 대비 2.0 중량% 이상의 함량으로 상기 유제를 포함하는흡연 물품 필터용 라이오셀 소재의 제조방법.
- 제 14 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물 20 내지 60 중량부를 포함하는,흡연 물품 필터용 라이오셀 소재의 제조방법.
- 제 14 항에 있어서,상기 유제는 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물을 더 포함하는,흡연 물품 필터용 라이오셀 소재의 제조방법.
- 제 14 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, 상기 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물 10 내지 50 중량부를 포함하는,흡연 물품 필터용 라이오셀 소재의 제조방법.
- 제 14 항에 있어서,총 섬도가 15,000 내지 45,000 데니어이고, 인치당 20 내지 50 개의 크림프가 형성된 라이오셀 멀티 필라멘트를 제공하는,흡연 물품 필터용 라이오셀 소재의 제조방법.
- 라이오셀 소재를 포함하는 흡연 물품용 필터이고,상기 라이오셀 소재는 크림프가 부여된 라이오셀 멀티 필라멘트; 및 상기 라이오셀 멀티 필라멘트에 코팅된 유제를 포함하며,상기 유제는 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 및 (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물을 포함하고,상기 라이오셀 소재는 라이오셀 소재 전체 100 중량% 대비 2.0 중량% 이상의 함량으로 상기 유제를 포함하는,흡연 물품용 필터.
- 제 19 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물 20 내지 60 중량부를 포함하는,흡연 물품용 필터.
- 제 19 항에 있어서,상기 유제는 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물을 더 포함하는,흡연 물품용 필터.
- 제 19 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, 상기 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물 10 내지 50 중량부를 포함하는,흡연 물품용 필터.
- 제 19 항에 있어서,상기 크림프가 부여된 라이오셀 멀티 필라멘트는,15,000 내지 45,000 데니어의 총 섬도 및 인치당 20 내지 50 개의 크림프를 갖는,흡연 물품용 필터.
- 제 18 항에 따른 흡연 물품용 필터를 포함하는, 흡연 물품.
- 라이오셀 소재; 및 상기 라이오셀 소재를 둘러싸는 권지를 포함하는 흡연 물품용 필터이고,상기 라이오셀 소재는 크림프가 부여된 라이오셀 멀티 필라멘트; 및 상기 라이오셀 멀티 필라멘트에 코팅된 유제를 포함하며,아래 식 1-1에 따라 계산되는 물 주입 전 필터의 지름 유지율이 85 % 이상을 만족하고,아래 식 1-2에 따라 표현되는 물 주입 후 필터의 지름 유지율이 80 % 이상을 만족하는,흡연 물품용 필터:<식 1-1>물 주입 전 필터의 지름 유지율(%)= {(초기 필터 지름(mm) - 특정 무게(300g)의 추로 필터를 눌렀을 때 필터가 눌린 길이(mm))/(초기 필터 지름(mm))} x 100<식 1-2>물 주입 후 필터의 지름 유지율(%)= {(초기 필터 지름(mm) - 물 주입 후 특정 무게(300g)의 추로 필터를 눌렀을 때 필터가 눌린 길이(mm))/(초기 필터 지름(mm))} x 100단, 상기 식 1-2에서 필터에 주입되는 물의 양은 20 ㎕이고, 식 1-2의 지름 유지율은 필터에 물을 주입한 후 5분 경과 후 측정된 것일 수 있다.
- 제 25 항에 있어서,아래 식 2에 따라 계산되는 수분 붕괴도가 8.0 % 이하를 만족하는,흡연 물품용 필터:<식 2>수분 붕괴도(%) = {(상기 <식 1-1>에 따라 계산된 물 주입 전 필터 지름 유지율 - 상기 <식 1-2>에 따라 계산된 물 주입 후 필터 지름 유지율)/(상기 <식 1-1>에 따라 계산된 물 주입 전 필터 지름 유지율)}×100
- 제 25 항에 있어서,상기 라이오셀 소재는 라이오셀 소재 전체 100 중량% 대비, 2.0 중량% 이상의 함량으로 상기 유제를 포함하고,상기 유제는 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 및 (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물을 포함하는,흡연 물품용 필터.
- 제 25 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물 20 내지 60 중량부를 포함하는,흡연 물품용 필터.
- 제 25 항에 있어서,상기 유제는 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물을 더 포함하는,흡연 물품용 필터.
- 제 25 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, 상기 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물 10 내지 50 중량부를 포함하는,흡연 물품용 필터.
- 제 25 항에 있어서,상기 라이오셀 멀티 필라멘트는 15,000 내지 45,000 데니어의 총섬도 및 인치당 20 내지 50 개의 크림프를 갖는,흡연 물품용 필터.
- 제 25 항에 따른 흡연 물품용 필터를 포함하는, 흡연 물품.
- 라이오셀 멀티 필라멘트를 유제 처리하는 단계; 라이오셀 멀티 필라멘트에 크림프를 부여하는 단계; 및 크림프가 부여된 라이오셀 멀티 필라멘트를 이용하여 필터를 제조하는 단계를 포함하는 흡연 물품용 필터의 제조방법이고,상기 유제는 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 및 (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물을 포함하며,상기 흡연 물품용 필터에 포함된 라이오셀 멀티 필라멘트는, 라이오셀 멀티 필라멘트 전체 100 중량% 대비 2.0 중량% 이상의 함량으로 상기 유제를 포함하는,흡연 물품용 필터의 제조방법.
- 제 33 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, (b) 소르비탄(sorbitan)과 탄소수가 16 이상인 지방산의 에스테르화물 20 내지 60 중량부를 포함하는,흡연 물품용 필터의 제조방법.
- 제 33 항에 있어서,상기 유제는 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물을 더 포함하는,흡연 물품용 필터의 제조방법.
- 제 33 항에 있어서,상기 유제는, 상기 (a) 탄소수가 16 이상인 지방산과 지방족 1가 알코올의 에스테르화물 100 중량부 대비, 상기 (c) 에스테르화물(b)에 대한 알킬렌옥사이드 부가물 10 내지 50 중량부를 포함하는,흡연 물품용 필터의 제조방법.
- 제 33 항에 있어서,상기 라이오셀 멀티 필라멘트는 총 섬도가 15,000 내지 45,000 데니어이고, 인치당 20 내지 50 개의 크림프를 갖는,흡연 물품용 필터의 제조방법.
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EP22916661.6A EP4437865A1 (en) | 2021-12-28 | 2022-12-26 | Lyocell material, smoking article filter, smoking article, and method for manufacturing same |
CN202280086417.7A CN118450819A (zh) | 2021-12-28 | 2022-12-26 | 莱赛尔材料、吸烟制品过滤嘴、吸烟制品及其制造方法 |
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- 2022-12-26 EP EP24188363.6A patent/EP4442898A2/en active Pending
- 2022-12-26 CA CA3242096A patent/CA3242096A1/en active Pending
- 2022-12-26 KR KR1020220184263A patent/KR20230100666A/ko unknown
- 2022-12-26 WO PCT/KR2022/021311 patent/WO2023128520A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20070039547A (ko) * | 2004-06-25 | 2007-04-12 | 셀라네세 아세테이트 앨앨씨 | 셀룰로오스 아세테이트 토우 및 그 제작 방법 |
KR20160081726A (ko) * | 2014-12-31 | 2016-07-08 | 코오롱인더스트리 주식회사 | 담배필터용 라이오셀 소재 및 그 제조방법 |
US20190075842A1 (en) * | 2017-09-08 | 2019-03-14 | Philip Caenen | High dpf cellulose acetate tow and process for making |
US20210244088A1 (en) * | 2020-02-10 | 2021-08-12 | Acetate International, Llc | Degradable cellulose ester |
US20210315255A1 (en) * | 2020-04-14 | 2021-10-14 | Nicoventures Trading Limited | Regenerated cellulose substrate for aerosol delivery device |
Also Published As
Publication number | Publication date |
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KR20230100666A (ko) | 2023-07-05 |
EP4437865A1 (en) | 2024-10-02 |
EP4442898A2 (en) | 2024-10-09 |
CA3242096A1 (en) | 2023-07-06 |
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