Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B3/00—Preparing tobacco in the factory
  • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B5/00—Stripping tobacco; Treatment of stems or ribs
  • A24B5/14—Flattening machines for leaves or stems
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B5/00—Stripping tobacco; Treatment of stems or ribs
  • A24B5/16—Other treatment of stems or ribs, e.g. bending, chopping, incising
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
  • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
  • A24C5/01—Making cigarettes for simulated smoking devices
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
  • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
  • A24C5/14—Machines of the continuous-rod type
  • A24C5/18—Forming the rod
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/20—Cigarettes specially adapted for simulated smoking devices
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/20—Devices using solid inhalable precursors

Definitions

• the present invention relates to a twisted thread-like material for smoking articles.
• non-combustion smoking devices which have been expanding in the smoking market, generally use a heating device at 150 to 350°C to heat a tobacco rod, thereby distilling and producing flavor components, and delivering them.
• the tobacco rod is manufactured by a conventional method of filling shredded tobacco sheet, a method of cutting a tobacco sheet lengthwise into strips and filling the strips, or a method of crimping the sheet as is and filling the strips. In all methods, a gap is provided to ensure a desired flow path for the aerosol during smoking.
• Patent Document 1 discloses that an aerosol-generating article is manufactured by fusing the strands of a tobacco sheet wound on a first bobbin and a tobacco sheet wound on a second bobbin while maintaining an angle of 5 to 90 degrees when the strands are unwound from the respective bobbins.
• Flavor source rods such as tobacco rods require voids to allow the aerosol to flow, but at the same time, voids reduce the hardness of the rod.
• the objective of the present invention is to provide a flavor source rod with appropriate hardness.
• a smoking article substrate selected from the group consisting of a slit-provided sheet, a strand, and combinations thereof, The bundle of the base material is twisted so as to face a direction that intersects obliquely with the longitudinal direction thereof.
• Aspect 2 2. The material of claim 1, wherein the sheet has a thickness of 50 to 2000 ⁇ m; or the strand has a thickness of 50 to 2000 ⁇ m.
• Aspect 3 The material according to embodiment 1 or 2, wherein the slit width of the sheet or the cut width of the strand is 0.5 to 10 mm.
• Aspect 4 A material according to any one of the preceding claims, wherein the substrate comprises a flavor source.
• Aspect 5 The material of claim 4, wherein the flavor source is derived from tobacco.
• Aspect 6 The material according to any one of aspects 1 to 5, wherein an angle between the longitudinal axis and the ridge line generated by the twisting is 10 to 40 degrees.
• Aspect 7 7. The material of any one of aspects 1 to 6, wherein the substrate is derived from a cast sheet, an extruded sheet, or a laminate sheet.
• Aspect 8 A flavor source rod comprising the material according to any one of aspects 1 to 7.
• Aspect 9 When the center of a cross section perpendicular to the longitudinal direction of the flavor source rod is C and the radius is R, The packing density of the area between 0.7R and R is D, When the packing density of the area C ⁇ 0.7R is d, A flavor source rod according to claim 8, wherein D>d.
• Aspect 10 A smoking article comprising the flavor source rod according to aspect 8 or 9.
• Aspect 11 providing a convergent body of the substrate; Twisting the convergent body in a rotational direction about its longitudinal axis;
• the present invention can provide a flavor source rod with appropriate hardness.
• FIG. 1 is a diagram illustrating an embodiment of a non-combustion heating type smoking article.
• FIG. 1 is a diagram illustrating one embodiment of a non-combustion heating type smoking system. Appearance of the flavor source rods obtained in the Examples and Comparative Examples
• X ⁇ Y includes the end values X and Y.
• the twisted material according to the present embodiment is for use in smoking articles, and includes a substrate for smoking articles selected from the group consisting of a sheet, a strand, and a combination thereof, each having a slit, and the bundle of the substrate is twisted so as to face a direction that crosses obliquely with the longitudinal direction.
• a smoking article is an article that generates an aerosol by combustion or heating.
• the former is also called a combustion smoking article, and the latter is also called a non-combustion heating smoking article.
• the twisted material according to the present embodiment is suitable for a non-combustion heating smoking article.
• the substrate for smoking article is a substrate for use in a smoking article.
• the substrate is selected from the group consisting of a sheet having a slit, a strand, and a combination thereof.
• FIG. 1 shows a substrate.
• S1 is a sheet with slits
• S11 is a slit
• S3 is a strand.
• a slit is a cut that does not extend to both ends of the sheet.
• the width t of the strand affects the restoring force when twisted into a rod. From this viewpoint, the width is preferably 0.5 to 10 mm.
• the lower limit is preferably 0.8 mm, 1 mm, or 2 mm or more, and the upper limit is preferably 8 mm, 5 mm, or 4 mm or less.
• the longitudinal length of the sheet or strand is not limited, but is preferably 0.5 to 2 cm.
• the thickness of the sheet or strand is not limited, but is preferably 50 to 2000 ⁇ m.
• the width (transverse length) and number of sheets, and the width and number of strands are set appropriately depending on the thickness of the final rod to be obtained.
• the substrate is bundled into a rod shape to form a bundle (Fig. 2).
• S' is the bundle and S is the twisted material.
• Parallel arrangement means that the longitudinal direction of each strand is approximately parallel to the longitudinal direction of the rod.
• start and end of each strand are arranged in the same manner.
• the figure shows a bundle S' using multiple strands, but the same applies to a bundle of sheets or when strands and sheets are used in combination.
• the bundle is twisted in a direction that obliquely intersects with its longitudinal direction to form the twisted material S.
• r is the ridge line and ⁇ is the angle between the longitudinal axis and the ridge line.
• ⁇ is preferably 10 to 40 degrees, more preferably 15 to 30 degrees.
• the twisted material S is wrapped with a wrapper to fix the twisted structure.
• the flavor source rod Due to the repulsive force of the twisted structure, the flavor source rod has a higher packing density on the outside than on the inside. Specifically, as shown in FIG. 3, when the center of a cross section perpendicular to the longitudinal direction is C and the radius is R, the packing density of the area from over 0.7R to R is D, and the packing density of the area from C to 0.7R is d, then D>d.
• a flavor source rod that satisfies this relationship has an appropriate hardness. From this perspective, D/d is preferably 0.8 to 8.
• the packing density can be measured by image analysis. In the figure, 20A is the flavor source rod.
• the substrate is preferably derived from a cast sheet, an extruded sheet, or a laminate sheet, which are described below.
• the substrate preferably contains a flavor source.
• the flavor source is a material that emits a flavor.
• the flavor source is preferably derived from tobacco.
• the tobacco material may be a material derived from a Nicotiana plant. Specific tobacco materials include tobacco shreds and tobacco powder that are usually used in the field. These are used alone or in combination.
• tobacco leaves of the genus Nicotiana such as tabacum and rustica, can be suitably used. Although the variety is not limited, one or more of these tobacco leaves can be mixed and used. As the mixture, a suitable blend of the above varieties can be used to achieve the desired taste.
• a flavor source rod formed from a substrate containing a flavor source derived from tobacco is also called a tobacco rod.
• the base material may contain other components.
• An example of such a component is an aerosol generating agent.
• the aerosol generating agent is a material that vaporizes by heating and cools to generate an aerosol, or generates an aerosol by atomization. When the base material contains an aerosol generating agent, a sufficient amount of smoke can be provided.
• a known aerosol generating agent can be used, and examples thereof include glycerin, vegetable glycerin, polyhydric alcohols such as propylene glycol (PG), triethyl citrate (TEC), triacetin, etc.
• the amount of the aerosol generating agent can be 5 to 20% by weight, more preferably 10 to 15% by weight, based on the dry weight of the flavor source. If the amount of the aerosol generating agent exceeds the upper limit, stains may occur on the flavor source rod, and if it is less than the lower limit, the smoke sensation may decrease.
• the substrate may also contain materials commonly used in the field, such as a molding agent, a reinforcing agent, or a fragrance.
• the molding agent is a binder that imparts strength to the sheet.
• molding agents include polysaccharides, proteins, synthetic polymers, and the like. These may be used alone or in combination of two or more. Examples of polysaccharides include cellulose derivatives and naturally occurring polysaccharides.
• Fragrances include menthol, etc.
• the amounts of the above ingredients may be any known amount.
• the twisted thread-like material is preferably manufactured by a method including: step 1 of preparing a substrate for a smoking article selected from the group consisting of a slit-formed sheet, a strand, and a combination thereof; and step 2 of twisting a bundle of the substrate in a direction obliquely intersecting with the longitudinal direction thereof.
• Step 1 a substrate for a smoking article is prepared.
• the substrate is preferably produced by producing a sheet by a known method such as rolling or casting, and then slitting or cutting the sheet. Details of various sheets produced by such methods are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."
• An example of a method for producing a sheet by rolling includes the following steps. 1) A step of mixing water, tobacco powder, an aerosol forming agent, a molding agent, and a reinforcing agent to obtain a mixture. 2) A step of feeding the mixture into a rolling roller and rolling it. 3) A process of drying the rolled product in a dryer.
• the surface of the rolling roller may be heated or cooled, the number of revolutions of the rolling roller may be adjusted, and the distance between the rolling rollers may be adjusted, depending on the purpose.
• One or more rolling rollers may be used to obtain a sheet of the desired basis weight.
• the method may include the following steps: 1) Mixing water, tobacco powder, an aerosol forming agent, a molding agent, and pulp to obtain a mixture. 2) The mixture is cast into a thin film and dried to form a tobacco sheet.
• a step may be added in which a slurry of water, tobacco powder, an aerosol generating agent, a molding agent, and pulp is irradiated with ultraviolet light or X-rays to remove some of the components, such as nitrosamines.
• the method may include the following steps: 1) A step of kneading a tobacco material, a binder, and water to prepare a mixture. 2) spreading or extruding the mixture through a die to prepare a wet sheet. 3) A step of drying the wet sheet.
• the sheet is conventionally cut into strands or the sheet is conventionally slit.
• Step 2 it is preferable to prepare a rod-shaped bundle by bundling the substrates, and twist the bundle.
• the twisting direction is the circumferential direction of the bundle, i.e., the direction of rotation about the longitudinal axis.
• the bundle of substrates faces a direction that crosses the longitudinal direction obliquely.
• the number and shape of the strands used, and the shape and number of sheets are appropriately adjusted. That is, when a bundle satisfying the normal diameter of a flavor source rod can be obtained by using a substrate alone, the substrate can be used alone. Alternatively, when a bundle satisfying the normal diameter of a flavor source rod can be obtained by using multiple substrates, it is necessary to use multiple substrates.
• the bundle can be prepared by a known method. For example, a rod-shaped bundle can be prepared by passing the substrate through a bundling tube.
• the twisting angle ⁇ is the angle between the longitudinal axis of the rod and the edge of the twisted convergent. Normally, ⁇ decreases over time due to repulsive forces. Therefore, the twisted convergent is fixed with a wrapper or the like, and the value reached when ⁇ stops changing becomes the aforementioned ⁇ . Normally, ⁇ stops changing within 30 seconds after the twisting process, and the degree of change is very small.
• the non-combustion heating smoking article may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article.
• the non-combustion heating smoking article and the heating device are collectively referred to as a "non-combustion heating smoking system".
• a non-combustion heating smoking article (hereinafter simply referred to as a "smoking article") will be described as an example.
• the smoking article has a cylindrical shape.
• the circumferential length of the smoking article is preferably 16 to 27 mm, more preferably 20 to 26 mm, and even more preferably 21 to 25 mm.
• the total length (horizontal length) of the smoking article 20 is not particularly limited, but is preferably 40 to 90 mm, more preferably 50 to 75 mm, and even more preferably 50 to 60 mm.
• the smoking article is composed of a flavor source rod, a filter segment that constitutes the mouthpiece, and a connecting part that connects these together.
• the flavor source rod 20A is cylindrical, and its total length (length in the axial direction) is, for example, preferably 5 to 100 mm, more preferably 10 to 50 mm, and even more preferably 10 to 25 mm.
• the cross-sectional shape of the flavor source rod 20A is not particularly limited, but can be, for example, a circle, an ellipse, a polygon, etc.
• the flavor source rod 20A has a twisted thread-like material S and a wrapper 22 wound around it.
• the filter section 20C has a cylindrical shape.
• the filter section 20C has a rod-shaped first segment 25 filled with cellulose acetate fiber and a rod-shaped second segment 26 similarly filled with cellulose acetate fiber.
• the first segment 25 is located on the flavor source rod 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 filling layer (cellulose acetate fiber) 25a and an inner plug wrapper 25b wound around the first filling layer 25a.
• the second segment 26 is composed of a second filling layer (cellulose acetate fiber) 26a and an inner plug wrapper 26b wound around the second filling 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 adhesive or the like.
• the length of the filter portion 20C can be, for example, 10 to 30 mm
• the length of the connecting portion 20B can be, for example, 10 to 30 mm
• the length of the first segment 25 can be, for example, 5 to 15 mm
• the length of the second segment 26 can be, for example, 5 to 15 mm.
• These lengths of each segment are just examples, and can be changed as appropriate according to the manufacturing suitability, the required quality, the length of the flavor source rod 20A, and the like.
• the first segment 25 (center hole segment) is composed of a first filling layer 25a having one or more hollow parts, and an inner plug wrapper 25b that covers the first filling layer 25a.
• the first segment 25 has the function of increasing the strength of the second segment 26.
• the first filling layer 25a of the first segment 25 is densely packed with, for example, cellulose acetate fibers.
• a plasticizer containing triacetin is added to the cellulose acetate fibers in an amount of, for example, 6 to 20% by weight based on the weight of the cellulose acetate, and the fibers are hardened.
• the hollow part of the first segment 25 has an inner diameter of, for example, ⁇ 1.0 to ⁇ 5.0 mm.
• the first filling layer 25a of the first segment 25 may be, for example, constructed with a relatively high fiber filling density, or may be equivalent to the fiber filling density of the second filling layer 26a of the second segment 26 described later. Therefore, during inhalation, air and aerosol flow only through the hollow portion, and air and aerosol hardly flow through the first filling layer 25a. For example, if it is desired to reduce the loss of aerosol components due to filtration in the second segment 26, the length of the second segment 26 can be shortened and the first segment 25 can be lengthened accordingly. Replacing the shortened second segment 26 with the first segment 25 is effective in increasing the delivery amount of aerosol components. Since the first filling layer 25a of the first segment 25 is a fiber filling layer, the user does not feel uncomfortable when touching the outside during use.
• 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 packed with cellulose acetate fibers at a general density and has general filtering performance for aerosol components.
• the filtering performance for filtering the aerosol (mainstream smoke) emitted from the flavor source rod 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 flavoring.
• the structure of the filter section 20C is arbitrary, and may be a structure having multiple segments as described above, or may be composed of a single segment.
• the filter section 20C may also be composed of one segment. In this case, the filter section 20C may be composed of either the first segment or the second segment.
• the connecting part 20B has a cylindrical shape.
• the connecting part 20B has a paper tube 23 formed into a cylindrical shape using, for example, cardboard.
• the connecting part 20B may be filled with a cooling material for cooling the aerosol.
• An example of the cooling material is a sheet of a polymer such as polylactic acid, which can be folded and filled.
• a support part for preventing the position of the flavor source rod 20A from fluctuating may be provided between the flavor source rod 20A and the connecting part 20B.
• the support part can be made of a known material such as a center hole filter like the first segment 25.
• the wrapper 28 is wrapped around the outside of the flavor source rod 20A, the connecting portion 20B, and the filter portion 20C in a cylindrical shape, connecting them together.
• One side (inner surface) of the wrapper 28 is coated entirely or almost entirely with a vinyl acetate emulsion adhesive, except for the area near the air vents 24.
• the multiple air vents 24 are formed by laser processing from the outside after the flavor source rod 20A, the connecting portion 20B, and the filter portion 20C are integrated by the wrapper 28.
• the ventilation hole section 24 has two or more through holes penetrating the connecting section 20B in the thickness direction.
• the two or more through holes are formed so as to be arranged radially when viewed from an extension of the central axis of the smoking article 20.
• the ventilation hole section 24 is provided in the connecting section 20B, but may be provided in the filter section 20C.
• the two or more through holes of the ventilation hole section 24 are arranged in one row at a fixed interval on one ring, but may be arranged in two rows at a fixed interval on two rings, or one or two rows of the ventilation hole section 24 may be arranged discontinuously or irregularly.
• non-combustion heating smoking system The combination of a non-combustion heating smoking article and a heating device for generating aerosol is also referred to as a non-combustion heating smoking system.
• a non-combustion heating smoking system comprises a non-combustion heating smoking article 20 and a heating device 30 that heats the flavor source rod 20A from the outside.
• the heating device 30 includes a body 31, a heater 32, a metal tube 33, a battery unit 34, and a control unit 35.
• the body 31 has a cylindrical recess 36, and the heater 32 and the metal tube 33 are arranged at a position corresponding to the flavor source rod 20A inserted therein.
• the heater 32 can be a heater using electrical resistance, and is heated by being supplied with power from the battery unit 34 in response to an instruction from the control unit 35 that controls the temperature.
• the heat generated by the heater 32 is transferred to the flavor source rod 20A through the metal tube 33, which has high thermal conductivity.
• the heating device 30 is shown as heating the flavor source rod 20A from the outside, but it may also be heating from the inside.
• the heating temperature by the heating device 30 is not particularly limited, but is preferably 400°C or less, more preferably 150 to 400°C, and even more preferably 200 to 350°C.
• the heating temperature refers to the temperature of the heater of the heating device 30. In this case, the flavor generating segment 20A is heated to approximately 200-350°C.
• the flavor source rod 20A may be heated from the inside.
• a needle-type or blade-type heater may be inserted inside the flavor source rod 20A to heat the rod.
• a susceptor may be placed inside the flavor source rod 20A and heated using an induction method.
• a smoking article substrate selected from the group consisting of a slit-provided sheet, a strand, and combinations thereof, The bundle of the base material is twisted so as to face a direction that intersects obliquely with the longitudinal direction thereof.
• Aspect 2 2. The material of claim 1, wherein the sheet has a thickness of 50 to 2000 ⁇ m; or the strand has a thickness of 50 to 2000 ⁇ m.
• Aspect 3 The material according to embodiment 1 or 2, wherein the slit width of the sheet or the cut width of the strand is 0.5 to 10 mm.
• Aspect 4 A material according to any one of the preceding claims, wherein the substrate comprises a flavor source.
• a flavor source rod comprising the material according to any one of aspects 1 to 7.
• Aspect 9 When the center of a cross section perpendicular to the longitudinal direction of the flavor source rod is C and the radius is R, The packing density of the area between 0.7R and R is D, When the packing density of the area C ⁇ 0.7R is d, A flavor source rod according to claim 8, wherein D>d.
• a smoking article comprising the flavor source rod according to aspect 8 or 9.
• Aspect 11 providing a convergent body of the substrate; Twisting the convergent body in a rotational direction about its longitudinal axis;
• Examples 1 to 3 (1) Manufacture of Laminated Sheet Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) to obtain leaf tobacco particles with a D90 of 300 ⁇ m. D90 was measured using a Mastersizer (manufactured by Malvern). Leaf tobacco particles and Sunrose F30MC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.) as a binder were dry-blended using a mixer. Next, glycerin was added as an aerosol-generating base material and water as a medium to the dry blend, and the mixture was mixed in a mixer to prepare a wet powder.
• ACM-5 manufactured by Hosokawa Micron
• the wet powder was kneaded three times at room temperature using a kneader (Dalton, DG-1) to obtain a mixture.
• the die shape was circular, and the screw rotation speed was 60 rpm.
• a 250 ⁇ m sheet was prepared from the wet powder using a calendaring device (Yuri Roll Machinery Co., Ltd.).
• the roll gap was 20 ⁇ m.
• the roll gap was thicker than the thickness of the final sheet, but this is because the sheet, released from the pressure between the rollers, expanded to nearly the final thickness.
• the resulting sheet was dried at 80°C for 5 minutes using a forced air dryer to obtain a laminate sheet.
• Example 4 A rod was produced and evaluated in the same manner as in Example 1-2, except that the angle ⁇ was set to 60°.
• the rods produced in Example 1-2 and Comparative Example 1-2 are shown in FIG. 6(2) together with their appearances.

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

Priority Applications (5)

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Publications (1)

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Citations (5)

• 2023
  • 2023-04-19 JP JP2025515035A patent/JPWO2024218988A1/ja active Pending
  • 2023-04-19 WO PCT/JP2023/016372 patent/WO2024218988A1/ja not_active Ceased
  • 2023-04-19 CN CN202380097126.2A patent/CN121263076A/zh active Pending
  • 2023-04-19 EP EP23934130.8A patent/EP4699454A1/en active Pending
  • 2023-04-19 KR KR1020257037766A patent/KR20250166335A/ko active Pending

Patent Citations (5)

Non-Patent Citations (2)

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