WO2022071570A1 - Smoking composition sheet - Google Patents

Abstract

A smoking composition sheet containing a moisturizing agent, a binder, and either one or both of a flavoring agent and a molding auxiliary, and having an air permeability of greater than 0 CORESTA units.

Description

Smoking composition sheet

The present invention relates to a smoking composition sheet.

In order to design a smoking article that matches the taste of the user, it is important to control the profile when releasing the component from the smoking composition. In recent years, many techniques related to non-combustion type smoking articles that suck the components generated by heating a tobacco sheet have been proposed (for example, Patent Document 1), but in the non-combustion type smoking articles, the control of the profile is particularly controlled. It is regarded as important.

Patent No. 5292410

The air permeability of the conventional smoking composition sheet is zero or very low. In order to control the release of components from these composition sheets, for example, the sheet has been rolled into a roll to change the filling amount of the composition, or the density of the composition has been changed. However, these conventional methods have a drawback that there are limits on the filling amount and density in order to maintain the winding shape, and the applicable range in product design is narrow. In view of such circumstances, it is an object of the present invention to provide a smoking composition sheet capable of achieving an excellent profile.

The inventors have solved the above-mentioned problems by setting the air permeability of the smoking composition sheet within a specific range. That is, the above problem is solved by the following invention.
(1) Moisturizer and
With a binder,
Containing, with or both flavoring agents and molding aids,
A composition sheet for smoking with a breathability of more than 0 cholesta unit.
(2) The sheet according to (1), wherein the air permeability is 500 cholesterol units or more.
(3) The sheet according to (1) or (2), wherein the flavoring agent is selected from the group consisting of tobacco, flavoring agents, and combinations thereof.
(4) The sheet according to any one of (1) to (3), wherein the moisturizer is a polyhydric alcohol.
(5) The sheet according to any one of (1) to (4), wherein the binder is selected from the group consisting of polysaccharides, proteins, synthetic polymers, and combinations thereof.
(6) The sheet according to any one of (1) to (5), wherein the molding aid is a pulp or a non-woven fabric of vegetable fiber or synthetic fiber.
(7) The sheet according to any one of (1) to (6), which is a pressure-formed sheet.
(8) The sheet according to any one of (1) to (6), which has a plurality of holes provided by physical processing.
(9) The sheet according to any one of (1) to (7), which has a plurality of holes provided by chemical processing.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a composition sheet for smoking that can achieve an excellent profile.

Schematic diagram showing an example of a smoking segment using a smoking composition sheet Schematic cross-sectional view showing an example of a non-combustion heating type smoking system Schematic cross-sectional view showing an example of a non-combustion heating type flavor suction article Figure showing the result of smoking test

Hereinafter, the present invention will be described in detail. In the present invention, "X to Y" includes X and Y which are fractional values thereof.
1. 1. Smoking Composition Sheet A smoking composition sheet is a sheet used for smoking articles and includes a moisturizer, a binder, and one or both of a flavoring agent and a molding aid.

(1) Moisturizer The smoking composition sheet contains a moisturizer. A moisturizer is a material for moisturizing a smoking composition sheet, but it is also a material that is vaporized and cooled by heating to produce an aerosol or atomized to produce an aerosol. Known moisturizers can be used, for example, polyhydric alcohols such as glycerin or propylene glycol (PG); and triethylcitrate (TEC) or triacetin having a boiling point of more than 100 ° C. Things can be mentioned. The amount of the moisturizer in the smoking composition sheet is a dry weight (weight excluding mixed water, the same applies hereinafter), preferably 1 to 40% by weight, and more preferably 10 to 20% by weight. If the amount of the moisturizer exceeds the upper limit, it may be difficult to manufacture the smoking composition sheet, and if it is less than the lower limit, the amount of smoke sensation may decrease.

(2) Binder The binder is an adhesive for binding the components constituting the smoking composition sheet. In the present invention, known binders can be used. Examples of such binders include polysaccharides such as guar gum or xanthan gum; and cellulose derivatives such as CMC (carboxymethyl cellulose), CMC-Na (sodium salt of carboxymethyl cellulose), or HPC (hydroxypropyl cellulose). The upper limit of the content of the binder is the dry weight (weight excluding mixed water, the same applies hereinafter) with respect to the dry weight of the smoking composition sheet, preferably 6% by weight or less, and the lower limit is It is preferably 1% by weight or more, more preferably 3% by weight or more. If the amount of the binder exceeds the upper limit value or is less than the lower limit value, the above effect may not be sufficiently achieved.

Binders include polysaccharides, proteins, and synthetic polymers. Specific examples of these are shown below. In the present invention, these binders can also be used in combination.

1) Polysaccharides 1-1) Cellulose derivatives [Cellulose ethers]
Methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl ethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, aminoethyl cellulose [cellulose esters]
Organic acid esters: cellulose acetate, cellulose formate, propionate cellulose, butyrate cellulose, benzoate cellulose, phthalate cellulose, tosyl cellulose Inorganic acid esters: cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthogenate

1-2) Naturally-derived polysaccharides [plant-derived]
Guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, gum arabic, tragant gum, karaya gum, gutti gum, arabinogalactan, ama seed gum, cassha gum, psyllium seed gum, savaku yomogi seed gum [derived from algae]
Carrageenan, agar, alginate, propylene glycol alginate, farcerelan, fuchronoli extract [derived from microorganisms]
Xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan, welan gum, macrohomopsis gum, lambzan gum [derived from crustaceans]
Chitin, chitosan, glucosamine [starches]
Starch, sodium starch glycolate, pregelatinized starch, dextrin

2) Protein Wheat gluten, rye gluten

3) Synthetic polymer Polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone

(3) Flavoring agent A flavoring agent is a material that gives a flavor, and is preferably selected from the group consisting of tobacco, a flavoring agent, and a combination thereof. Examples of tobacco include chopped dried tobacco leaves, crushed leaf tobacco, and the like. A crushed leaf tobacco product is a particle obtained by crushing a leaf tobacco. The pulverized leaf tobacco product can have, for example, a particle size D90 of 20 to 1000 μm, preferably 50 to 500 μm. Further, the average particle size D50 can be preferably 20 to 1000 μm, more preferably 50 to 500 μm. The pulverization can be performed using a known pulverizer, and may be either dry pulverization or wet pulverization. Therefore, the crushed leaf tobacco is also referred to as leaf tobacco particles. In the present invention, the particle size is determined by a laser diffraction / scattering method, and specifically, it is measured using a laser diffraction type particle size distribution measuring device (for example, LA-950 manufactured by HORIBA, Ltd.). Further, the type of tobacco is not limited, and yellow varieties, Burley varieties, Orient varieties, native varieties, and other Nicotiana-Tabacam varieties, Nicotiana rustica varieties, and the like can be used. The amount of tobacco in the smoking composition sheet is not particularly limited, but is preferably 50 to 95% by weight, more preferably 60 to 90% by weight in terms of dry weight. When the smoking composition sheet contains a flavoring agent, the smoking composition sheet may not contain the molding aid described later.

A fragrance is a substance that provides a scent and flavor. The fragrance may be a natural fragrance, a synthetic fragrance, or a solid or a liquid. One kind of fragrance may be used as a fragrance, or a mixture of a plurality of kinds of fragrances may be used. As the fragrance, any fragrance generally used in smoking articles can be used, and specific examples thereof will be described later. The fragrance can be contained in the smoking article sheet in an amount such that the smoking article can provide a favorable scent and flavor, for example, the amount thereof is preferably 1 to 30% by weight in the smoking composition sheet. , More preferably 2 to 20% by weight.

The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance feeling, acetoanisol, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-annetol, star anis Oil, apple juice, peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butandione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamon Oil, Carobu Absolute, β-Carotene, Carrot Juice, L-Carbon, β-Cariophyllene, Cassia Bark Oil, Cedarwood Oil, Cellory Seed Oil, Chamomile Oil, Cinnamaldehyde, Cayhide Acid, Cinnamyl Alcohol, Cinnamyl Acid Cinnamyl, Citronella oil, DL-citronolol, clarisage extract, cocoa, coffee, cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dillherb oil, 3,4-dimethyl-1, 2-Cyclopentandione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethyl Pyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanate, oleic acid Ethyl, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6) -dimethylpyrazine, 5-ethyl-3- Hydroxy-4-methyl-2 (5H) -Franone, 2-Ethyl-3-methylpyrazine, Eucalyptor, Fenegrik Absolute, Gene Absolute, Lindou Root Infusion, Geraniol, Geranyl Acetate, Grape Juice, Guayacol, Guava Extract , Γ-Heptalactone, γ-Hexalactone, Hexanoic acid, cis-3-hexene-1-ol, hexyl acetate, hexyl alcohol, phenylacetate hexyl, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy- 4- ( 3-Hydroxy-1-butenyl) -3,5,5-trimethyl-2-cyclohexene-1-one, 4- (para-hydroxyphenyl) -2-butanone, sodium 4-hydroxyundecanoate, immortel absolute, β-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, rabdanum oil, lemon terpenless oil, kanzo extract, linalol, linaryl acetate, lobage root oil, Martor, Maple Syrup, Mensole, Menton, L-Mentyl Acetate, Paramethoxybenzaldehyde, Methyl-2-pyrrylketone, Methyl Anthranilate, Methyl Phenylacetate, Methyl Salicylate, 4'-Methylacetophenone, Methylcyclopentenolone, 3-Methylkichi Herb acid, mimosa absolute, toumitsu, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanic acid, orange flower oil, orange oil, oris root oil, palmitic acid, ω-pentadeca Lactone, peppermint oil, petitgrain paraguay oil, phenethyl alcohol, phenylacetate phenethyl, phenylacetic acid, piperonal, plum extract, propenylguaetol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvate, raisin extract , Rose oil, lamb liquor, sage oil, sandalwood oil, spearmint oil, stylux absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5 , 5,9-Tetramethyl-13-oxacyclo (8.3.0.0 (4.9)) tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, Triethyl citrate, 4- (2,6,6-trimethyl-1-cyclohexenyl) 2-butene-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4- (2) , 6,6-trimethyl-1,3-cyclohexadienyl) 2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, vera Toraldehyde, Violet Leaf Absolute, N-Ethyl-p -Mentan-3-carbamide (WS-3), ethyl-2- (p-mentan-3-carboxamide) acetate (WS-5), sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice Powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural vegetable fragrances (eg jasmine oil, lemon oil, vetiver oil, lobage) Oils), esters (eg, menthyl acetate, isoamyl propionate, etc.), and alcohols (eg, phenylethyl alcohol, cis-6-nonen-1-ol, etc.). These fragrances may be used alone or in combination of two or more.

(4) Molding aid The smoking composition sheet contains a molding aid. The molding aid is a material added to facilitate molding of the smoking composition sheet. Examples of the molding aid include pulp or non-woven fabric of vegetable fiber or synthetic fiber, and more specifically, fiber derived from tobacco or fiber derived from a material other than tobacco. The amount of the molding aid added is preferably 0.5 to 2.0% by weight in the smoking composition sheet. The smoking composition sheet may contain either a flavoring agent or a molding aid, but when the molding aid is contained, the strength of the sheet can be specifically guaranteed, the adhesiveness of the sheet can be reduced, and the like. In addition, when both are included, the fragrance or the like can be supported on the molding aid, so that the effect of improving the carrying force of the fragrance or the like on the sheet can be achieved.

(5) Emulsifier The smoking composition sheet may contain an emulsifier. The emulsifier enhances the affinity between the lipophilic moisturizer and the hydrophilic flavoring agent. Therefore, the addition of an emulsifier is particularly effective when a lipophilic moisturizer is used. Known emulsifiers can be used, and examples thereof include emulsifiers having an HLB value of 8 to 18. The amount of the emulsifier is not particularly limited, but is preferably 0.1 to 3 parts by weight, more preferably 1 to 2 parts by weight, based on 100 parts by weight of the smoking composition sheet.

(6) Characteristics and Form of Smoking Composition Sheet 1) Air permeability The air permeability of the smoking composition sheet is more than 0 cholesta unit, preferably 50 cholesta unit or more, 100 cholesta unit or more, and 200 cholesta. It is a unit or more, a 300 cholesta unit or more, or a 400 cholesta unit or more, and more preferably a 500 cholesta unit or more. The upper limit is not limited, but is preferably 20,000 or less, and more preferably 15,000 or less. The cholesterol unit is an air passage flow rate (cm ³ ) in 1 minute per 1 cm ² under a differential pressure of 1 kPa. The air permeability can be measured using an air permeability meter PPM1000M manufactured by Cerulean. In the present invention, the air permeability is preferably measured by the following procedure. 1) Leave the sheet at room temperature of 22 ° C. and relative humidity of 60% for 48 hours to adjust the condition. 2) Next, this sheet is cut into a size of 40 mm × 240 mm, and the air passage amount from the front surface to the back surface is measured using an air permeability measuring device (PPM1000M manufactured by Cerulean) with a differential pressure of 1 kPa and a measuring head of circular 2 cm ² . do. 3) The measurement environment is room temperature (for example, 22 ° C.) and relative humidity of 60%.

Since the present invention uses a smoking composition sheet having a specific air permeability, the initial profile can be achieved. Specifically, it is possible to achieve a higher delivery in the initial puff than in the conventional sheet, and in the latter half of the puff, it is possible to achieve a profile in which the delivery amount is unlikely to decrease as in the conventional sheet. The reason for this is not limited, but it is presumed that the high air permeability of the sheet increases the release efficiency of the moisturizer from the sheet, thereby increasing the amount of aerosol formed from the moisturizer.

2) Thickness The thickness of the composition sheet for smoking is not limited, but in one embodiment, it is preferably 20 to 2000 μm, more preferably 100 to 1500 μm, and further preferably 100 to 1000 μm.

3) Density The smoking composition sheet preferably has a density of 0.5 to 2.0 g / cm ³ , and more preferably has a density of 0.5 to 1.0 g / cm ³ . As will be described later, the smoking composition sheet preferably has holes physically or chemically provided, but the density here is not the density of the portion other than the holes, but the density of the entire sheet including the holes. Density. Further, when the smoking composition sheet has a density of 1.0 g / cm ³ or less, more sufficient delivery of flavor components can be achieved at the initial stage of suction.

4) Holes As described above, the smoking composition sheet preferably has holes provided by processing. The holes can be made by physical or chemical processing. Examples of the former include laser processing, cutting processing using a needle or the like, electric opening for local discharge, and the like. Further, as the latter, etching can be mentioned. The shape of the hole is not limited, and may be a circle, an ellipse, a polygon, or the like, and the hole is preferably a through hole. The size, number and arrangement of the holes are appropriately adjusted to achieve the desired air permeability. In one embodiment, the size of the hole is such that the diameter of its circumscribed circle is 0.1 to 0.8 mm. Further, in one embodiment, the holes are arranged in a grid pattern on the sheet, and the shortest distance between the adjacent holes is about 0.2 to 0.8 mm.

(7) Smoking segment A smoking segment used for a smoking article can be produced from a smoking composition sheet. The smoking segment comprises, in one aspect, a tubular wrapper and a smoking composition sheet that is spirally packed within the wrapper (see FIG. 1A). In the figure, 20A is a smoking segment, 1 is a smoking composition sheet, 22 is a wrapper, and is usually paper. The segment is preferably rod-shaped, having a length of 15 to 80 mm and a diameter of about 5 to 10 mm. Further, the smoking segment 20A shown in FIG. 1 (A) can be cut to have an aspect ratio (length / diameter) of about 0.5 to 1.2 (see FIG. 1 (B)).

The smoking segment 20A includes a tubular wrapper 22 in another embodiment, and includes a smoking composition sheet 1 folded and filled in the wrapper. The ridges created by folding are substantially parallel to the longitudinal direction of the segment (see FIG. 1 (C)). The smoking segment 20A is preferably rod-shaped, has a length of 15 to 80 mm and a diameter of about 5 to 10 mm. In this embodiment, it is preferable that the smoking composition sheet 1 is previously subjected to surface wrinkling processing such as pleating or crimping.

The smoking segment 20A is provided with a tubular wrapper 22 in another embodiment, and is provided with a cut fragment 1c of a smoking composition sheet filled in the wrapper (see FIG. 1 (D)). The smoking segment 20A is preferably rod-shaped, has a length of 15 to 80 mm and a diameter of about 5 to 10 mm. The size of the cut piece is not limited, but for example, the length of the longest side can be about 2 to 20 mm and the width can be about 0.5 to 1.5 mm.

The smoking segment 20A is provided with a tubular wrapper 22 in another embodiment, and is provided with a strand type engraving filled in the wrapper (see FIG. 1 (E)). The strand type engraving is filled so that its longitudinal direction is substantially parallel to the longitudinal direction of the wrapper 22. The width of the strand type engraving can be about 0.5 to 1.5 mm.

The smoking segment 20A is provided with a tubular wrapper 22 in another embodiment, and includes a tobacco engraved filling randomly filled in the wrapper. Tobacco carving is a cut piece and is different from strand type carving.

2. 2. Production Method The smoking composition sheet can be produced by any method, but is preferably produced by a method including the following steps.
1. A step of kneading a medium with at least one or both of a moisturizer, a binder, a flavoring agent or a molding aid, and preparing a mixture.
Step 2 to prepare a wet sheet by squeezing or extruding the mixture from a die.
Step 3 of drying the wet sheet.
A sheet formed by applying pressure in this way is referred to as a "pressure molded sheet", and as will be described later, the "pressure molded sheet" includes a "laminated sheet" and an "extruded sheet". The laminated sheet is a sheet obtained by compressing the mixture with a roller at least once to a target thickness and then drying it to a target water content. The extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying it to a target water content. Compression and extrusion may be combined in a pressure molded sheet. For example, the mixture may be extruded and then further compressed to form a sheet.

(1) Step 1
In this step, at least the moisturizer, the binder, one or both of the flavoring agent and the molding aid, and the medium are kneaded. If necessary, an emulsifier can be added. The blending amount of each component is adjusted so that the above-mentioned amount can be achieved. The medium is preferably water or a water-soluble organic solvent having a boiling point of less than 100 ° C. such as ethanol as a main component, and more preferably water or ethanol.

This step can be carried out by kneading each component, but is preferably carried out through 1) pulverization of a raw material (for example, a single leaf), 2) preparation of wet powder, and 3) kneading.
1) Grinding It is preferable to roughly grind the raw material and then finely grind it using a grinder (for example, manufactured by Hosokawa Micron, ACM-5). The particle size D90 after fine grinding is preferably 20 to 1000 μm. The particle size is measured using a laser diffraction type particle size meter such as a master sizer (manufactured by Malvern).

2) Preparation of wet powder Mix the binder with one or both of the flavoring agent and the molding aid, and if necessary, add an additive such as a lipid. Since this mixing is preferably a dry blend, it is preferable to use a mixer as a mixer. It is preferable to use a crushed tobacco raw material (for example, leaf tobacco particles) as a flavoring agent. Next, a medium such as water and a moisturizer are added to the dry blend and mixed with a mixer to prepare a wet powder (wet powder). The amount of the medium in the wet powder can be 20 to 80% by weight, preferably 20 to 40% by weight, and is appropriately prepared by the step 2. For example, when compression is performed in step 2, the amount of the medium can be 20 to 50% by weight, and when extrusion is performed, it can be 20 to 80% by weight. The solid content concentration of the wet powder is preferably 50 to 90% by weight.

3) Kneading The wet powder is kneaded using a kneader (for example, DG-1 manufactured by Dalton). The kneading is preferably carried out until the medium is completely spread, for example, it is preferable to knead until the color of the mixture becomes uniform visually.

(2) Step 2
In this step, the mixture (wet powder) is squeezed or extruded from a die to prepare a wet sheet. For example, while sandwiching the mixture between two base films, a calendar device (for example, manufactured by Yuri Roll Machinery Co., Ltd.) is used to pass the mixture between a pair of rollers until it reaches a predetermined thickness (more than 100 μm), and pressurize the mixture. It can be expanded to obtain a laminate in which a wet sheet is present between two base films. As the base film, a non-adhesive film such as a fluoropolymer film is preferable. The pressure expansion by the rollers can be performed multiple times. It is also possible to extrude the mixture (wet powder) from a die (preferably a T die) provided with a predetermined gap to form a wet sheet on the substrate. As the base material, known materials such as a glass plate, a metal plate, and a plastic plate can be used. A known extruder can be used for extrusion.

(3) Step 3
In this step, the wet sheet is dried. For example, in laminating, this step can be carried out by the following procedure. 1) Peel off one of the base films. 2) Dry the laminate using a ventilation dryer. The drying temperature may be room temperature, but is preferably 50 to 100 ° C., and the drying time can be 1 to 2 minutes. 3) Next, the remaining base film is peeled off and further dried under the above conditions to obtain a smoking composition sheet. By performing the drying in this way, it is possible to prevent the smoking composition sheet from adhering to other substrates. The smoking composition sheet thus obtained is also referred to as a "laminate sheet". The laminated sheet has a smooth surface and is preferable because it can suppress the occurrence of spillage when it comes into contact with other members. Further, this method is suitable for producing a sheet having a thickness of 300 μm or less.

In the case of extrusion molding, the wet sheet on the base material is air-dried or heated to dry. The drying conditions are as described above. The smoking composition sheet thus obtained is also referred to as an "extruded sheet". The extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of spillage when it comes into contact with other members. This method is suitable for producing a sheet having a thickness of 200 μm or more.

In addition, the smoking composition sheet can also be manufactured by a papermaking method, a casting method, a non-woven fabric coating method, or the like. The papermaking method is a method in which a mixture containing a moisturizer, a binder, one or both of a flavoring agent or a molding aid, and water is made into paper and dried to produce a sheet. However, since the mixture needs to contain a fibrous substance, the tobacco raw material as a flavoring agent is a fibrous tobacco raw material or contains pulp as a molding aid. The water extract extracted before the tobacco material is fiberized can later be concentrated and reapplied to the papermaking sheet. The sheet manufactured by this method is called a papermaking sheet.

The casting method is a method in which a mixture containing a moisturizer, a binder, and one or both of a flavoring agent and a molding aid is developed (cast) on a substrate and dried to produce a sheet. .. The mixture preferably contains a pulverized tobacco raw material as a flavoring agent, and may contain a molding aid and a medium such as water, if necessary. The sheet manufactured by this method is called a cast sheet.

The non-woven fabric coating method is a method for producing a sheet by applying a mixture containing a moisturizer, a binder, and one or both of a flavoring agent and a molding aid to a non-woven fabric. The sheet produced by this method is called a non-woven fabric sheet.

3. 3. Smoking articles Examples of smoking articles include flavor-sucking articles in which the user tastes the flavor by suction, and smokeless tobacco (smokeless smoking articles) in which the user tastes the flavor by directly including the product in the nasal cavity and oral cavity. The flavor suction article can be roughly classified into a combustion type smoking article typified by a conventional cigarette and a non-combustion type smoking article. The smoking composition sheet of the present invention is suitable for a flavor-sucking article.

Examples of the combustion-type flavor suction article include cigarettes, pipes, pipes, cigars, cigarillos, and the like.

The non-combustion heating type flavor suction article may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article. In the former flavor suction article (separate type), the non-combustion heating type flavor suction article and the heating device are collectively referred to as a "non-combustion heating type smoking system". An example of a non-combustion heating type smoking system will be described below with reference to FIGS. 2 and 3.

FIG. 2 is a schematic cross-sectional view showing an example of a non-combustion heating type smoking system, and shows a state before the heater 12 is inserted into the smoking segment 20A of the non-combustion heating type flavor suction article 20. At the time of use, the heater 12 is inserted into the smoking segment 20A. FIG. 3 is a cross-sectional view of the non-combustion heating type flavor suction article 20.

As shown in FIG. 2, the non-combustion heating type smoking system includes a non-combustion heating type flavor suction article 20 and a heating device 10 for heating the smoking segment 20A from the inside. However, the non-combustion heating type smoking system is not limited to the configuration shown in FIG.

The heating device 10 shown in FIG. 2 includes a body 11 and a heater 12. Although not shown, the body 11 may include a battery unit and a control unit. The heater 12 can be a heater due to electrical resistance and is inserted into the smoking segment 20A to heat the smoking segment 20A.

The smoking composition sheet of the present invention is highly effective when the smoking segment 20A is heated from the inside as shown in FIG. In such a heating method, since the smoking composition sheet and the heater are in direct contact with each other, the release efficiency of the moisturizer from the sheet is further increased, and an excellent profile can be obtained. However, the non-combustion heating type flavor suction article 20 The aspect is not limited to this, and in another aspect, the smoking segment 20A is heated from the outside.

The heating temperature by the heating device 10 is not particularly limited, but is preferably 400 ° C. or lower, more preferably 50 to 400 ° C., and even more preferably 150 to 350 ° C. The heating temperature refers to the temperature of the heater 12 of the heating device 10.

As shown in FIG. 3, the non-combustion heating type flavor suction article 20 (hereinafter, simply referred to as “flavor suction article 20”) has a cylindrical shape. The circumference of the flavor suction article 20 is preferably 16 mm to 27 mm, more preferably 20 mm to 26 mm, and even more preferably 21 mm to 25 mm. The total length (horizontal length) of the flavor suction article 20 is not particularly limited, but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and even more preferably 50 mm to 60 mm.

The flavor suction article 20 is composed of a smoking segment 20A, a filter portion 20C constituting a mouthpiece, and a connecting portion 20B connecting these.

The smoking segment 20A is columnar, and its total length (length in the axial direction) is preferably, for example, 5 to 100 mm, more preferably 10 to 50 mm, and 10 to 25 mm. More preferred. The shape of the cross section of the smoking segment 20A is not particularly limited, but may be, for example, a circular shape, an elliptical shape, a polygonal shape, or the like.

The smoking segment 20A has a smoking composition sheet or a material 21 derived from the same, and a wrapper 22 wrapped around the same. Further, the wrapper 22 may be the smoking composition sheet 1 of the present invention.

The filter unit 20C has a cylindrical shape. The filter unit 20C has a rod-shaped first segment 25 filled with cellulose acetate acetate fiber and a rod-shaped second segment 26 also filled with cellulose acetate acetate fiber. The first segment 25 is located on the smoking segment 20A side. The first segment 25 may have a hollow portion. The second segment 26 is located on the mouthpiece side. The second segment 26 is solid. The first segment 25 is composed of a first packed layer (cellulose acetate acetate fiber) 25a and an inner plug wrapper 25b wound around the first packed layer 25a. The second segment 26 is composed of a second packed layer (cellulose acetate acetate fiber) 26a and an inner plug wrapper 26b wound around the second packed layer 26a. The first segment 25 and the second segment 26 are connected by an outer plug wrapper 27. The outer plug wrapper 27 is adhered to the first segment 25 and the second segment 26 with a vinyl acetate emulsion-based adhesive or the like.

The length of the filter portion 20C is, for example, 10 to 30 mm, the length of the connecting portion 20B is, for example, 10 to 30 mm, the length of the first segment 25 is, for example, 5 to 15 mm, and the length of the second segment 26 is, for example, 5 to 15 mm. can do. The length of each of these individual segments is an example, and can be appropriately changed depending on the manufacturing aptitude, the required quality, the length of the smoking segment 20A, and the like.

For example, the first segment 25 (center hole segment) is composed of a first packed layer 25a having one or more hollow portions and an inner plug wrapper 25b covering the first packed layer 25a. The first segment 25 has a function of increasing the strength of the second segment 26. The first packed layer 25a of the first segment 25 is filled with, for example, cellulose acetate fibers at a high density. A plasticizer containing triacetin is added to the cellulose acetate fiber in an amount of, for example, 6 to 20% by mass based on the mass of cellulose acetate and cured. The hollow portion of the first segment 25 has, for example, an inner diameter of φ1.0 to φ5.0 mm.

The first packed layer 25a of the first segment 25 may be composed of, for example, a relatively high fiber filling density, or may be equivalent to the fiber filling density of the second packed layer 26a of the second segment 26 described later. May be good. Therefore, at the time of suction, air or aerosol flows only in the hollow portion, and almost no air or aerosol flows in the first packed bed 25a. For example, in the second segment 26, when it is desired to reduce the decrease due to the filtration of the aerosol component, for example, the length of the second segment 26 can be shortened and the first segment 25 can be lengthened by that amount.

Replacing the shortened second segment 26 with the first segment 25 is effective for increasing the delivery amount of the aerosol component. Since the first packed layer 25a of the first segment 25 is a fiber packed layer, the feeling of touch from the outside during use does not cause a sense of discomfort to the user.

The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper 26b that covers the second packed layer 26a. The second segment 26 (filter segment) is filled with cellulose acetate fibers at a general density and has the filtering performance of a general aerosol component.

The filtration performance for filtering the aerosol (mainstream smoke) emitted from the smoking segment 20A may be different between the first segment 25 and the second segment 26. At least one of the first segment 25 and the second segment 26 may contain a fragrance. The structure of the filter unit 20C is arbitrary, and may be a structure having a plurality of segments as described above, or may be composed of a single segment. Further, the filter unit 20C may be composed of one segment. In this case, the filter unit 20C may be composed of either the first segment or the second segment.

The connecting portion 20B has a cylindrical shape. The connecting portion 20B has a paper tube 23 formed in a cylindrical shape by, for example, thick paper. The connecting portion 20B may be filled with a cooling member for cooling the aerosol. Examples of the cooling member include a sheet of a polymer such as polylactic acid, and the sheet can be folded and filled. Further, a support portion for suppressing the position of the smoking segment 20A from changing may be provided between the smoking segment 20A and the connecting portion 20B. The support portion can be made of a known material such as a center hole filter such as the first segment 25.

The wrapper 28 is wound in a cylindrical shape on the outside of the smoking segment 20A, the connecting portion 20B, and the filter portion 20C, and these are integrally connected. A vinyl acetate emulsion-based adhesive is applied to one surface (inner surface) of the wrapper 28 on the entire surface or substantially the entire surface except the vicinity of the ventilation hole portion 24. The plurality of ventilation holes 24 are formed by laser processing from the outside after the smoking segment 20A, the connecting portion 20B, and the filter portion 20C are integrated by the wrapper 28.

The ventilation hole portion 24 has two or more through holes so as to penetrate the connecting portion 20B in the thickness direction. The two or more through holes are formed so as to be arranged radially when viewed from the extension line of the central axis of the flavor suction article 20. In the present embodiment, the ventilation hole portion 24 is provided in the connecting portion 20B, but may be provided in the filter portion 20C. Further, in the present embodiment, the two or more through holes of the ventilation hole portion 24 are provided side by side in a row at regular intervals on one ring, but at regular intervals on the two rings. The vent holes 24 in one row or two rows may be provided side by side in two rows, or the ventilation holes 24 in one row or two rows may be provided side by side in a discontinuous or irregular manner. When the user holds the mouthpiece and sucks it, the outside air is taken into the mainstream smoke through the ventilation hole portion 24. However, the ventilation hole portion 24 may not be provided.

[Example 1]
Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) so that D90 was 70 μm to obtain leaf tobacco particles. D90 was measured with a master sizer (manufactured by malvern). Carboxymethyl cellulose (manufactured by Nippon Paper Industries, Ltd., trade name: Sunrose F30MC) as a binder was dry-blended with leaf tobacco particles using a mixer. Next, glycerin as a moisturizer and water as a medium were added to the dry blend and mixed with a mixer to prepare a wet powder. The composition of each component is as shown in Table 1.

Using a kneader (manufactured by Dalton, DG-1), the wet powder was kneaded 6 times at room temperature to obtain a mixture. A T-die was used as the die, and the screw rotation speed was 38.5 rpm.

Wet powder is sandwiched between two Teflon (registered trademark) films (NITOFLON (R) No.900UL manufactured by Nitto Denko Corporation) and a calendar device (manufactured by Yuri Roll Machinery Co., Ltd.) is used to obtain a specified thickness (over 100 μm). Rolled in four steps until a film / wet sheet / film had a layered structure and a thickness of 105 μm was prepared. The roll gaps of the first to fourth stages were set to 650 μm, 330 μm, 180 μm, and 5 μm, respectively. The roll gap of the fourth stage is thicker than the thickness of the finally obtained sheet, because the sheet released from the pressure between the rollers expands to near the final thickness.

One Teflon (registered trademark) film was peeled off from the laminate and dried at 80 ° C. for 1 to 2 minutes using a ventilation dryer. Then, another film was peeled off and the wet sheet was dried under the same conditions to produce the smoking composition sheet of the present invention.

The smoking composition sheet thus obtained was allowed to stand for 48 hours under the conditions of room temperature 22 ° C. and relative humidity 60%. Next, a plurality of openings having a hole size of 0.2 mm × 0.2 mm were provided on the sheet using a laser processing device (manufactured by TROTEC). The opening intervals were set to 0.4 mm at equal intervals. Detailed conditions are shown in Table 2. The air permeability and release profile of the processed smoking composition sheet thus obtained were evaluated by the method described later. The results are shown in Table 2 and FIG. The vertical axis of FIG. 4 shows the amount of nicotine normalized by the amount of nicotine per flavored smoking article. That is, when the amount of nicotine detected in one puff is x (g) and the amount of nicotine per puff (the amount of nicotine in the total of 1 to 14 puffs) is y (g), the vertical axis is x / y. The values are plotted.

<Draftness>
The sheet after opening was allowed to stand for 48 hours under the conditions of room temperature 22 ° C. and relative humidity 60%. Then, this sheet was cut into a size of 40 mm × 240 mm, and measured using an air permeability measuring device (PPM1000M manufactured by Cerulean) with a differential pressure of 1 kPa and a measuring head of 2 cm ² in a circle. The measurement environment was room temperature 22 ° C. and relative humidity 60%. The air permeability was calculated as the air passage flow rate (cm ³ ) in 1 minute per 1 cm ² under the condition of a differential pressure of 1 kPa.

<Ingredient release profile>
1) The sheet after opening was allowed to stand for 48 hours under the conditions of room temperature 22 ° C. and relative humidity 60%.
2) The thickness and basis weight were measured, and the sheet density was calculated.
3) The sheet was cut into a size of 55 mm × 0.8 mm.
4) The sheath paper of φ7.1 was cut and filled with a sheet so as to have a predetermined volume filling rate, and cut into a length of 12 mm.
5) A smoking test roll (flavor suction article) was manufactured by connecting a 12 mm long smoking segment (cigarette segment), a filter, and a paper tube.
6) The non-combustion internal heating type smoking system shown in FIG. 2 was prepared. Next, a Cambridge filter was connected to the mouthpiece end. The sheets prepared in each example were cut to prepare chopped pieces. The engraving was filled in a wrapper 22 having a length of 12 mm and a diameter of 7 mm in an amount of 70% by volume to prepare a smoking segment 20A. The system was subjected to a smoking test using a smoking machine. Specifically, using an automatic smoker (R-26 manufactured by Borgwaldt KC Inc.), the sample was sampled under the conditions of a smoke absorption capacity of 27.5 ml / sec, a smoke absorption time of 2 seconds / puff, a smoke absorption frequency of 2 puffs / minute, and 14 puffs. The particulate matter in cigarette smoke per puff was collected by a Cambridge filter (Borgwaldt KC Inc., CM-133). The Cambridge filter after the smoking test was shaken in 10 mL of methanol (manufactured by Wako Pure Chemical Industries, Ltd., special grade reagent) to obtain an analysis sample. 1 μL of the obtained analytical sample was collected in a microsyringe and analyzed by gas chromatograph mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).

[Examples 2 to 4, Comparative Example 1]
The laser processing conditions were changed to prepare a sheet having the air permeability as shown in Table 2. A smoking test roll was prepared and evaluated by the same method as in Example 1 except that each sheet was used and the filling rate was changed. The results are shown in FIG.

As shown in the figure, the smoking article using the smoking composition sheet of the present invention can achieve an excellent profile that the delivery of the initial puff is high and the delivery equivalent to that of the conventional sheet can be ensured even in the latter half.

1 Smoking composition sheet 1c Cutting fragment of smoking composition sheet
10 Heating device 11 Body 12 Heater
20 Non-combustion heating type flavor suction article 20A Smoking segment 20B Connecting part 20C Filter part
21 Smoking composition sheet or material derived from it 22 Wrapper 23 Paper tube 24 Vent 25 1st segment 25a 1st packed layer 25b Inner plug wrapper 26 2nd segment 26a 2nd packed layer 26b Inner plug wrapper 27 Outer plug Wrapper 28 Wrapper

Claims (9)

Moisturizer and
With a binder,
Containing, with or both flavoring agents and molding aids,
A composition sheet for smoking with a breathability of more than 0 cholesta unit. The sheet according to claim 1, wherein the air permeability is 500 cholesterol units or more. The sheet according to claim 1 or 2, wherein the flavoring agent is selected from the group consisting of tobacco, a flavoring agent, and a combination thereof. The sheet according to any one of claims 1 to 3, wherein the moisturizer is a polyhydric alcohol. The sheet according to any one of claims 1 to 4, wherein the binder is selected from the group consisting of polysaccharides, proteins, synthetic polymers, and combinations thereof. The sheet according to any one of claims 1 to 5, wherein the molding aid is a pulp or non-woven fabric of vegetable fiber or synthetic fiber. The sheet according to any one of claims 1 to 6, which is a pressure-formed sheet. The sheet according to any one of claims 1 to 6, which has a plurality of holes provided by physical processing. The sheet according to any one of claims 1 to 7, which has a plurality of holes provided by chemical processing.

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