Method for producing a rod of filamentary material
By preparing filamentous material rods through mixing, stirring, spinning, fluidized bed drying, and spiral forming, the problems of complexity and quality instability in the preparation of heated cigarette smoke-generating materials were solved, and efficient and stable material preparation was achieved.
Patent Information
- Application Number
- CN202310433202.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-21
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2043-04-21
AI Technical Summary
The existing manufacturing process for heated cigarette smoke-generating materials is complex and requires high environmental temperature and humidity, resulting in unstable product quality and loss of aroma.
The mixture is prepared by mixing and stirring evenly, and then scraped into thin sheets by a rotating blade device. The mixture is then formed into cylindrical materials by fluidized drying and a spiral feeding and discharging device, and finally wrapped into filamentous material rods by forming paper.
The preparation process has been simplified, avoiding product quality instability and aroma loss, and achieving efficient preparation of stable filamentous material rods, which are convenient for subsequent use.
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Figure CN116268511B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of tobacco products, in particular to a preparation method of a filamentous sheet material rod. BACKGROUND
[0002] The smoking material is a key factor affecting the smoking experience of a heat-not-burn cigarette and is the core material and technology of a heat-not-burn cigarette. The currently developed smoking materials mainly include a disordered ordered cut tobacco process, a tobacco sheet process, a tobacco coated paper base material process, and a granular material with atomization function.
[0003] The smoking segment of a current heat-not-burn cigarette is generally formed by powdering a sheet, winding and cutting, and then forming a cut tobacco or a tobacco rod. The preparation process of the smoking material generally needs special equipment to prepare a plurality of materials such as powder into a large sheet, and then cut the sheet material into a filament or a rod by a special cutting device. Then, the filament or rod material is treated by mixing, stirring, flavoring, and other devices, and then a material rod is prepared by a forming device. Therefore, the preparation process of the smoking material is complex, and the environmental temperature and humidity requirements are high. The multiple process treatments of the core material cause unstable product quality, loss of flavor, and other shortcomings. SUMMARY
[0004] The present application relates to the technical field of tobacco products, in particular to a preparation method of a filamentous sheet material rod.
[0005] The present application relates to the technical field of tobacco products, in particular to a preparation method of a filamentous sheet material rod.
[0006] Step a: uniformly mixing a plurality of functional materials by mixing and stirring to obtain a mixed material;
[0007] Step b: forming the mixed material into a sheet material by a die;
[0008] Step c: cutting the sheet material into a filamentous sheet material by a rotating blade device;
[0009] Step d: drying the filamentous sheet material by a fluidized drying device to obtain dried filamentous sheet material;
[0010] Step e: conveying the dried filamentous sheet material to a spiral feeding and discharging device, and adsorbing the filamentous sheet material to a spiral channel by negative pressure, and combining and arranging the filamentous sheet material into a cylindrical material under the action of the negative pressure airflow;
[0011] Step f: conveying the cylindrical material to a forming device, and wrapping the cylindrical material into a filamentous sheet material rod by a forming paper; and
[0012] Step g: cutting the filamentous sheet material rod into a filamentous sheet material rod with a fixed length by a cutting blade.
[0013] Preferably, in step a, the functional material comprises tobacco powder, adhesive, glycerin and water.
[0014] Preferably, in step b, the sheet material is a strip-shaped sheet with uniform density, rectangular cross section and certain thickness.
[0015] Preferably, in step c, the rotating blade device comprises, from inside to outside, a gas distribution sleeve, a rotating drum and a plurality of blades,
[0016] The gas distribution sleeve has a positive pressure blowing area and a negative pressure suction area, and the rotating drum is rotatably sleeved outside the gas distribution sleeve,
[0017] The rotating drum surface is provided with a plurality of air holes, and each blade of the plurality of blades has an opening at the end away from the blade edge, and an air passage is formed from the opening to the inside of the blade,
[0018] Each blade is installed on the outer surface of the rotating drum and is configured such that the opening communicates with each air hole on the surface of the rotating drum, and the surface of each blade has a plurality of micropores that communicate the internal air passage of the blade with the outside.
[0019] Preferably, the plurality of micropores of the blade are arranged in the area of the blade surface close to the blade edge.
[0020] Preferably, the rotating drum rotates to drive the rotation of the blades to scrape the sheet material into the strip-shaped material, when the blades on the rotating drum rotate to the negative pressure suction area of the gas distribution sleeve, the strip-shaped material scraped by the blades is adsorbed to the surface of the blades, and when the blades on the rotating drum continue to rotate by a certain angle to the positive pressure blowing area of the gas distribution sleeve, the strip-shaped material is separated from the surface of the blades and blown to the fluidized drying device.
[0021] Preferably, in step e, the spiral feeding and discharging device comprises a shell and an inner sleeve matched with the shape of the shell, and the surface of the inner sleeve has an air flow guiding portion for forming a spiral air flow.
[0022] Preferably, the air flow guiding portion comprises a plurality of guiding pieces, each guiding piece is arranged to extend from the feeding end to the discharging end of the spiral feeding and discharging device, and the guiding piece forms a certain angle with the axial direction of the spiral feeding and discharging device to generate a spiral air flow.
[0023] Preferably, the spiral feeding and discharging device further has a filament catching net arranged on the air flow guiding portion for preventing the strip-shaped material from directly contacting the plurality of guiding pieces.
[0024] Preferably, the cylindrical material has a structure in which the filamentous material is arranged along the axis of the cylindrical material and interwoven with each other
[0025] The present application has the following advantages: the present application can prepare a filamentous material rod by one-time molding of a natural plant powder material which is difficult to granulate and an application function material, facilitating subsequent use, such as preparation of a heating cigarette smoking section, and avoiding problems such as unstable product quality and loss of flavor caused by too many process links. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a flow chart of a filamentous material rod preparation method of a preferred embodiment of the present application.
[0027] Figure 2 is a side view schematic diagram of a rotary blade device of a preferred embodiment of the present application.
[0028] Figure 3 is a perspective view schematic diagram of a gas distribution sleeve of a rotary blade device of a preferred embodiment of the present application.
[0029] Figure 4 is a perspective view schematic diagram of a gas distribution sleeve of a rotary blade device of a preferred embodiment of the present application.
[0030] Figure 5 (a) is a schematic diagram of a rotary drum of a rotary blade device of a preferred embodiment of the present application, Figure 5 (b) is a schematic diagram of a rotary drum and a blade connection of a rotary blade device of a preferred embodiment of the present application, Figure 5 (c) is a schematic diagram of a rotary drum and a blade connection of a rotary blade device of a preferred embodiment of the present application.
[0031] Figure 6 (a) is a schematic diagram of a rotary drum and a blade connection of a rotary blade device of a preferred embodiment of the present application, Figure 6 (b) is a schematic diagram of a rotary drum and a blade connection of a rotary blade device of a preferred embodiment of the present application.
[0032] Figure 7 is a schematic diagram of a spiral feeding and discharging device of a preferred embodiment of the present application.
[0033] Figure 8 is a schematic diagram of an inner sleeve of a spiral feeding and discharging device of a preferred embodiment of the present application.
[0034] Figure 9 is a schematic diagram of an inner sleeve feeding port of a spiral feeding and discharging device of a preferred embodiment of the present application.
[0035] Figure 10 is a schematic diagram of an inner sleeve unfolding of a spiral feeding and discharging device of a preferred embodiment of the present application.
[0036] Figure 11 This is a schematic diagram of the unfolded wire mesh of the spiral feeding and discharging device according to a preferred embodiment of the present invention.
[0037] Figure 12 This is a schematic diagram of a filamentous material rod according to a preferred embodiment of the present invention. Detailed Implementation
[0038] The embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of the present invention. The corresponding embodiments below are only for clearly illustrating the inventive content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the embodiments described. Any variations or modifications that fall within the technical concept and inventive content of this invention and are obvious are also within the protection scope of this invention.
[0039] Throughout the specification, when a section “includes” a certain component, it means that other components may be included unless there is a description of the characteristics to the contrary, rather than excluding the inclusion of other components.
[0040] like Figure 1 As shown, a preferred embodiment of the present invention provides a method for preparing a filamentous material rod, comprising the following steps a to g. Each step is described in detail below.
[0041] First, step a: Multiple functional materials are mixed and stirred to obtain a homogeneous mixture. In each preferred embodiment, the functional materials include tobacco powder, binder, glycerin, and water. Specifically, the functional raw materials such as tobacco powder, binder, glycerin, and water are fed into a mixing device in a certain proportion. The mixing device has multiple feed inlets 1, a mixing chamber 2 communicating with the feed inlets, and a discharge chamber 3 communicating with the mixing chamber 2. Multiple raw materials enter the mixing chamber 2 through different feed inlets 1, thereby mixing the raw materials evenly. The homogeneous mixture is extruded through a screw (not shown) in the discharge chamber 3.
[0042] Step b: The mixture is formed into a sheet material through the die device 4. In each preferred embodiment, the sheet material is a strip-shaped sheet with uniform density, rectangular cross-section, and a certain thickness. Then, the sheet material is conveyed by the conveyor belt 6 to the area below the rotating blade device 5.
[0043] Step c: The thin sheet material is scraped off into filamentous material using the rotating blade device 5. In this step, after the filamentous material is scraped off, it is first adsorbed onto the surface of the blade. After the rotating blade device 5 rotates to a certain angle, it is blown to the next process for drying.
[0044] like Figures 2 to 6 As shown, in each preferred embodiment, the rotating blade device 5 is used to scrape the sheet material to form a filamentous material. The device includes, from the inside to the outside, a gas distribution sleeve 21, a rotating drum 22, and a plurality of blades 23.
[0045] In each preferred embodiment, the gas distribution sleeve 21 has a positive pressure blowing zone 21a and a negative pressure adsorption zone 21b. The positive pressure blowing zone 21a is formed by a positive pressure port 211 and a positive pressure air distribution hole 213, and the negative pressure adsorption zone 21b is formed by a negative pressure port 212 and a negative pressure air distribution hole 214. A positive pressure airflow is formed at the positive pressure port 211 by passing high-pressure air through the positive pressure air distribution hole 213, thus forming the positive pressure blowing zone. A negative pressure airflow is formed at the negative pressure port 212 by connecting a vacuum pump to the negative pressure air distribution hole 214, thus forming the negative pressure adsorption zone. Preferably, the negative pressure adsorption zone 21b is located below the positive pressure blowing zone 21a. Here, the gas distribution sleeve 1 is fixed. Preferably, the surface area of the negative pressure adsorption zone 21b is larger than the surface area of the positive pressure blowing zone 21a.
[0046] In each preferred embodiment, the aforementioned arrangement of the negative pressure adsorption zone 21b and the positive pressure blowing zone 21a facilitates the next work process. Since the blade 23 will rotate clockwise from the bottom to scrape thin material to form filamentous material, which is approximately 5-15 mm long, 0.8-1.5 mm wide, and 1 mm thick, the length direction of the filamentous material after scraping is orthogonal to the axis of the rotating drum 22, and the filamentous material is relatively vertical. First, negative pressure is used to adsorb the filamentous material onto the surface of the blade 23 so that it does not fall off. Then, after the rotating drum 22 rotates clockwise by approximately 90°, the filamentous material adsorbed on the blade 23 is relatively horizontal. At this point, positive pressure blowing can more easily blow the filamentous material to the next process.
[0047] In each preferred embodiment, the rotating drum 22 is rotatably fitted onto the outside of the air distribution sleeve 21. The surface of the rotating drum 22 is provided with a plurality of vent holes 221, which are arranged along the axial direction of the rotating drum 21. Preferably, the surface of the rotating drum 22 is provided with multiple rows of vent holes 221, each row of vent holes 221 extending axially from one end of the rotating drum 22 to the other end.
[0048] In each preferred embodiment, one end of each of the plurality of blades 23 away from the blade edge 235 has an opening 237, from which an air passage 238 is formed inside the blade, each blade 23 is mounted to the outer surface of the rotating drum 22 and configured such that the opening 237 communicates with each air hole 221 on the surface of the rotating drum 22, and the surface of each blade 23 has a plurality of micro-holes 233 that communicate the internal air passage 238 of the blade 23 with the outside. Preferably, the blade 23 is detachably mounted and fixed to the outer surface of the rotating drum 22.
[0049] In each preferred embodiment, the blade 23 is in the shape of a trapezoid with a narrow top and a wide bottom, and has a certain curvature, i.e. is formed as an inner concave surface 231 and an outer convex surface 232. Preferably, the width of the opening 237 at one end of the blade 23 is 1.2mm-5.0mm, and the width of the blade edge 235 at one end of the blade is 0.8mm-1.5mm. Preferably, the curvature of the surface of the blade 23 is 5-10 degrees. Preferably, the inner concave surface 232 of the blade 23 is disposed on the side of the rotation direction. As shown in Figure 4 As shown in (a), the rotation direction of the rotating drum is clockwise. By providing a certain curvature on the surface of the blade 23, the filiform material scraped off by the blade 23 can be effectively adsorbed on the inner concave surface 231 of the blade 23.
[0050] In each preferred embodiment, the plurality of micro-holes 233 of the blade 23 are disposed on the inner concave surface 231 of the blade near the blade edge 235. Preferably, the plurality of micro-holes 233 are arranged in the horizontal direction and form multiple rows in the vertical direction. Preferably, for example, 2-4 rows of micro-holes 233 can be formed. Preferably, the pore size of the micro-holes 233 is 0.05mm-0.2mm.
[0051] In each preferred embodiment, the rotary blade device 5 is generally arranged above a sheet material, such as tobacco sheet, which is placed below the rotary blade device 5. Here, the sheet material is a material with a certain moisture content. During operation, the rotary drum 22 of the rotary blade device 5 rotates to drive the blades 23 to rotate and thereby shave the sheet material into strip-like materials. When the blades on the rotary drum 22 rotate to the negative pressure suction area 21b of the air distribution sleeve 21, the negative pressure port 212 of the air distribution sleeve 21, the air passage hole 221 of the rotary drum 22 and the internal air passage 238 of the blade 23 form a negative pressure airflow, and the strip-like materials shaved by the blade 23 are immediately adsorbed to the inner concave surface 231 of the blade 23. When the blades 23 on the rotary drum 22 continue to rotate to the positive pressure blowing area 21a of the air distribution sleeve 21, the negative pressure port 212 of the air distribution sleeve 21, the air passage hole 221 of the rotary drum 22 and the internal air passage 238 of the blade 23 form a positive pressure airflow, and the strip-like materials are blown away from the surface of the blade 23 due to the loss of adsorption force and are blown to the next work station, such as a drying treatment device, for further drying treatment.
[0052] Next is step d: the strip-like materials are dried by the fluidized drying device 7 to obtain dried strip-like materials. The fluidized drying device 7 performs fluidized drying and conveying on the strip-like materials.
[0053] Step e: the dried strip-like materials are conveyed to the spiral feeding and discharging device 8, and the strip-like materials are adsorbed into the spiral channel by negative pressure and are arranged and gathered into cylindrical materials under the action of negative pressure airflow.
[0054] In this step e, the structure of the spiral feeding and discharging device 8 is shown in Figure 7 、 8 The spiral feeding and discharging device 8 includes an outer shell 31 and an inner sleeve 32 matched with the shape of the outer shell 31. Preferably, the outer shell and the inner sleeve are connected by threads, and in particular, the inner wall surface of the outer shell is threadedly connected with the outer wall surface of the inner sleeve, that is, the inner sleeve 32 can be detached from the outer shell 31, so as to facilitate the disassembly and cleaning of the guide fins 321 to maintain the cleanliness of the guide fins. The diameter of the outer shell 31 gradually decreases from the feeding end 311 to the discharging end 312, forming a funnel shape. The outer surface of the outer shell 31 near the feeding end 311 has a high-pressure air inlet 313, so as to generate a negative pressure suction force at the feeding end 311 for sucking in the strip-like materials, and generate a positive pressure pushing force at the discharging end 312 for discharging the strip-like materials. Preferably, the high-pressure air inlet 313 can be 2, symmetrically arranged on the outer surface of the feeding end 311. Figure 7 The arrows in the figure indicate the direction of the airflow.
[0055] In each preferred embodiment, as shown in Figure 9、 10 As shown in FIG. 1, the inner sleeve 32 has a gas flow guiding part 320 on its surface for forming a spiral gas flow, the gas flow guiding part 320 has a plurality of guiding pieces 321, each guiding piece 321 is arranged to extend from the feeding end 311 to the discharging end 312 of the spiral feeding and discharging device, and the guiding piece 321 forms an angle with the axial direction of the spiral feeding and discharging device to generate a spiral gas flow. Preferably, the height of the guiding piece 321 gradually decreases from high to low, the height of the guiding piece 321 at the feeding end is 5-10 mm, and the height of the guiding piece 321 at the discharging end is 0-3 mm. Preferably, the thickness of the guiding piece 321 is 0.2-1.2 mm.
[0056] In each preferred embodiment, the interval between adjacent guiding pieces 321 gradually decreases from large to small, the interval between adjacent guiding pieces 321 at the feeding end is 5-10 mm, and the interval between adjacent guiding pieces 321 at the discharging end is 2-5 mm. Preferably, the guiding piece 321 is a conical spiral line, and the angle formed with the axial direction of the spiral feeding and discharging device ranges from 0 to 10°.
[0057] In each preferred embodiment, as shown in FIG. 1, the spiral feeding and discharging device of the present application further has a filament catching net 33 arranged on the gas flow guiding part 320 for preventing the filament-like material from directly contacting the plurality of guiding pieces 321, avoiding the filament-like material from being damaged under the action of the gas flow, and simultaneously utilizing the transverse gas flow generated on the guiding piece by the gas flow to facilitate the material to smoothly move along the spiral feeding and discharging device to the discharging direction, preventing the accumulation of the filament-like material. Preferably, the filament catching net 33 is made of metal mesh, preferably stainless steel mesh. The diameter of the mesh hole 331 is 0.4-1.5 mm. The arrangement of the mesh hole interval is uniformly arranged, and the hole interval is adjustable. Preferably, according to the air pressure, the interval between two mesh holes 331 is 1 mm. Figure 11 Preferably, the cylindrical material formed in step e has a structure in which a plurality of filament-like materials are arranged along the axial direction of the cylindrical material and interwoven with each other. The negative pressure gas flow in the spiral feeding and discharging device 8 generates a spiral gas flow, i.e. a spiral gas flow similar to a "tornado", by the action of the gas flow guiding piece 382 on the inner sleeve 381, and the strength of the spiral force can be adjusted by adjusting the gas flow speed, so as to adjust the degree of interweaving of the material. The greater the gas flow speed, the stronger the spiral force, and the higher the degree of interweaving of the material.
[0058] Step f: the cylindrical material is conveyed to a forming device 9 to wrap the filament-like material into a rod by a forming paper. The forming device can be a forming gun, for example.
[0059]
[0060] Step g: cutting the rod of the sheet-like material into a sheet-like material rod 40 of fixed length by the cutting blade 10. The structure of the sheet-like material rod 40 is shown in Figure 12 FIG. 4, including a wrapping layer 41 for molding and a sheet-like material 42 inside the wrapping layer 41. The sheet-like material rod 40 can be further processed to make a heatable cigarette or the like.
[0061] In a preferred embodiment of the present application, 100 parts of tobacco powder (mesh size 60-200 mesh) and 100 parts of natural plant powder (mesh size 60-200 mesh) are mixed with 50 parts of an aqueous solution of CMC (4% CMC concentration) and 40 parts of glycerol, and the mixture is stirred to prepare a sheet material (2 cm thick and 10 cm wide). The sheet-like material is obtained by rotating the knife blade device to a width of 1.5 mm, a length of 1.5 cm, and a thickness of 1 mm. The sheet-like material is dried by fluidization to a moisture content of 5%, and then fed into the spiral feeding and discharging device. The sheet-like material is gathered by air flow and fed into the molding device. The sheet-like material is wrapped with a molding paper, and cut into a sheet-like material rod of 120 mm. The sheet-like material rod has the characteristics of tobacco and natural plant flavors, and can be used in a conventional cigarette by being combined with a cellulose acetate filter rod.
[0062] As described above, the sheet-like material preparation method of the present application can be used to prepare a sheet-like material rod from a natural plant powder material that is difficult to granulate by applying a functional material to the powder material in one molding step. The sheet-like material rod can be easily used in subsequent processes, such as making a heatable cigarette smoking segment, and can avoid problems such as unstable product quality and loss of flavor due to a large number of process steps. The sheet-like material rod can be prepared in one step by the method of the present application, and the liquid and solid materials can be prepared into a sheet-like material rod. The sheet-like material rod prepared by the method of the present application has elasticity and porosity, and can be used to prepare a composite filter rod. For example, the sheet-like material rod can be prepared by cutting a sheet-like material such as a Chinese herbal medicine into a sheet-like material rod, and then combined with a cellulose acetate filter rod to prepare a Chinese herbal medicine sheet-like composite filter rod, which can be used in a cigarette.
[0063] Obviously, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application. Any changes and modifications to the above embodiments within the spirit and scope of the present application will fall within the scope of the claims of the present application.
Claims
1. A method of preparing a rod of filamentary sheet material, characterised in that, The method comprises the following steps: Step a: uniformly mixing a plurality of functional materials by stirring to obtain a mixed material; the functional materials include tobacco powder, adhesive, glycerol and water; Step b: forming the mixed material into a sheet material through a die; Step c: cutting the sheet material into a filament material through a rotating blade device; Step d: drying the filament material through a fluidized drying device to obtain dried filament material; Step e: conveying the dried filament material to a spiral feeding and discharging device, the filament material is adsorbed into a spiral channel through negative pressure, and is arranged and gathered into a cylindrical material under the action of negative pressure airflow; Step f: conveying the cylindrical material to a forming device, and wrapping the filament material into a rod through a forming paper; and Step g: cutting the filament material rod into a filament material rod with a fixed length through a cutting blade, In step c, the rotating blade device comprises, from inside to outside, a gas distribution sleeve, a rotating drum and a plurality of blades, The gas distribution sleeve has a positive pressure blowing area and a negative pressure adsorption area, and the rotating drum is rotatably sleeved outside the gas distribution sleeve, The rotating drum surface is provided with a plurality of air holes, and each blade of the plurality of blades has an opening at an end away from the blade edge, and an air duct is formed from the opening to the inside of the blade, Each blade is installed on the outer surface of the rotating drum and is configured such that the opening communicates with each air hole on the surface of the rotating drum, and the surface of each blade has a plurality of micropores that communicate the internal air duct of the blade with the outside, The rotating drum rotates to drive the blades to rotate and cut the sheet material into the filament material, when the blades on the rotating drum rotate to the negative pressure adsorption area of the gas distribution sleeve, the filament material cut by the blades is adsorbed to the surface of the blades, when the blades on the rotating drum continue to rotate by a certain angle to the positive pressure blowing area of the gas distribution sleeve, the filament material is separated from the surface of the blades and blown to the fluidized drying device.
2. The method according to claim 1, wherein In step b, the sheet material is a strip-shaped sheet with uniform density, rectangular cross-section and certain thickness.
3. The method according to claim 1, wherein The micropores of the blade are arranged in the area of the blade surface close to the blade edge.
4. The method of claim 1, wherein the method further comprises: In step e, the spiral feeding and discharging device comprises a shell and an inner sleeve matched with the shape of the shell, and the surface of the inner sleeve has an airflow guide portion for forming a spiral airflow.
5. The method according to claim 4, wherein The airflow guide portion comprises a plurality of guide pieces, each guide piece is arranged to extend from the feeding end to the discharging end of the spiral feeding and discharging device, and the guide piece forms a certain angle with the axial direction of the spiral feeding and discharging device to generate a spiral airflow.
6. The method according to claim 5, wherein The spiral feeding and discharging device also has a filament catching net arranged on the airflow guide portion for preventing the filament material from directly contacting the plurality of guide pieces.
7. The method according to claim 1, wherein The cylindrical material has a structure in which the filament materials are arranged along the axial direction of the cylindrical material and interwoven with each other.
Citation Information
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