A method for preparing a heated cigarette core material

Abstract

The application provides a preparation method of a heating cigarette core material, comprising the following steps: a: mixing and drying tobacco leaves, and then grinding the tobacco leaves at a low temperature to obtain tobacco powder; b: mixing the tobacco powder with water, a binder, a smoking agent and other auxiliary materials, and stirring the tobacco powder and the auxiliary materials to obtain tobacco slurry; c: injecting the tobacco slurry into a plurality of nozzles arranged on a linear sliding table, driving the nozzles to reciprocate through the linear sliding table, and then forming a reticular flow tobacco slurry on a conveying belt; and d: drying the tobacco slurry on the conveying belt to obtain a reticular reconstituted tobacco core material. The preparation method of the heating cigarette core material has a simple processing process, can be formed at one time, and avoids secondary cutting or wrinkle treatment. In addition, compared with a traditional cutting process, the reticular reconstituted tobacco core material prepared by the method can avoid problems such as tobacco core back-off and tobacco filament falling.

Description

Technical Field

[0001] This invention relates to the field of heated cigarette technology, and in particular to a method for preparing heated cigarette core material. Background Technology

[0002] Currently, the production process of heated cigarette filler materials generally involves first producing thin sheets using a slurry method, roll pressing method, or papermaking method. Then, these sheets are either pleated to form filler rods, cut into strips online, or shredded and then processed into tobacco rods using a cigarette rolling machine before being combined with other materials. Therefore, the current manufacturing process for heated cigarette filler materials is complex, requiring secondary cutting or pleating, and is prone to problems such as shredding and filler retraction. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention proposes a method for preparing heated cigarette core material.

[0004] This invention provides a method for preparing heated cigarette core material, comprising:

[0005] Step a: After pre-mixing and drying the tobacco leaves, grind them at a low temperature to obtain tobacco powder;

[0006] Step b: Mix the tobacco powder with water, binder, smoke generator and other auxiliary materials, and stir to mix the tobacco powder and auxiliary materials evenly to obtain tobacco slurry;

[0007] Step c: The tobacco slurry is injected into multiple nozzles mounted on a linear slide table. The linear slide table drives the nozzles to reciprocate, thereby forming a mesh-like flow of tobacco slurry on a conveyor belt; and

[0008] Step d: Dry the tobacco slurry on the conveyor belt to obtain a mesh-like reconstituted tobacco core material.

[0009] Preferably, the number of linear slides is 2-5.

[0010] Preferably, the number of nozzles is 75-150.

[0011] Preferably, a motor provides the driving force for reciprocating motion to the linear slide.

[0012] Preferably, in step c, the reciprocating frequency of the linear slide and the linear speed of the conveyor belt are adjustable.

[0013] Preferably, the reciprocating frequency of the linear slide is 8-40 Hz, and the linear speed of the conveyor belt is 5-25 m / min.

[0014] Preferably, the conveyor belt is a steel belt.

[0015] Preferably, the reconstituted cigarette core material is a mesh structure with a single filament surface that is arc-shaped, a flat back surface, and multiple nodes connected.

[0016] Preferably, the width of the monofilament in the mesh-like reconstituted cigarette core material is 0.45-1.35 mm, the thickness between the top of the arc-shaped surface and the flat bottom is 0.15-0.30 mm, and the length of the filament between nodes is 4-30 mm.

[0017] Preferably, in step d, the reconstituted mesh core material can be directly connected to a molding machine to prepare core rods, or it can be first wound and stored, and then unwound for core rod preparation.

[0018] The present invention has the following beneficial effects: the method for preparing heated cigarette core material of the present invention has a simple processing technology, can be formed in one step, and avoids secondary cutting or wrinkling. In addition, compared with the traditional shredding process, the mesh-like reconstituted cigarette core material of the present invention can avoid problems such as shedding of fibers and core retraction. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a method for preparing heated cigarette core material according to a preferred embodiment of the present invention.

[0020] Figure 2 This is a flowchart of a method for preparing heated cigarette core material according to a preferred embodiment of the present invention. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] The following is for reference. Figure 1-2 A preferred embodiment of the present invention provides a detailed description of a method for preparing a heated cigarette core material. For example... Figure 1-2 As shown, a preferred embodiment of the present invention provides a method for preparing heated cigarette core material, comprising the following steps a to d. Each step is described in detail below.

[0024] Step a: After pre-mixing and drying the tobacco leaves, grind them at a low temperature to obtain tobacco powder.

[0025] Step b: Mix the tobacco powder with water, binder, smoke generator and other excipients, and stir to mix the tobacco powder and excipients evenly to obtain tobacco slurry.

[0026] Step c: The tobacco slurry is injected into multiple nozzles 2 mounted on a linear slide 1 using a screw pump. The linear slide 1 drives the nozzles 2 to reciprocate, thereby forming a mesh-like flow of tobacco slurry on the conveyor belt 3. Preferably, in step c, the number of linear slides 1 is 2-5. Figure 1 The preferred embodiment shown depicts two linear slides 1, arranged one behind the other in the conveying direction of the conveyor belt 3. By setting the reciprocating motion directions of the two linear slides to opposite directions, the nozzles on the two linear slides 1 spray the smoke onto the conveyor belt 3 to form a mesh-like flow of smoke. Preferably, the number of nozzles 2 provided on one linear slide 1 is 75-150.

[0027] In step c, preferably, a motor provides the reciprocating driving force to the linear slide 1. In some preferred embodiments, the linear slide 1 is a synchronous belt type. Its working principle is that the synchronous belt is mounted on drive shafts on both sides of the linear slide, one of which serves as a power input shaft connected to a servo motor. The linear slide is fixedly mounted on the synchronous belt, and multiple nozzles for spraying tobacco slurry onto the conveyor belt are arranged on the linear slide. By setting a suitable forward and reverse rotation program for the motor, the nozzles can automatically circulate and reciprocate. Preferably, the conveyor belt 3 is a steel belt.

[0028] Multiple nozzles 2 spray tobacco slurry while reciprocating regularly, forming a mesh-like interwoven structure on the conveyor belt 3. Preferably, the reciprocating frequency of the linear slide 1 and the linear speed of the conveyor belt 3 are adjustable. By adjusting the relationship between the reciprocating frequency and the linear speed of the steel belt, tobacco core materials with different mesh-like interwoven structures can be formed. Preferably, the reciprocating frequency of the linear slide is 8–40 Hz, and the linear speed of the conveyor belt is 5–25 m / min.

[0029] In a preferred embodiment, the reciprocating motion direction of the linear slide 1 is orthogonal to the conveying direction of the conveyor belt 3. The spraying direction of the nozzle 2 is the same as the conveying direction of the conveyor belt. Preferably, the nozzle 2 can spray in a horizontal plane. In other embodiments, the nozzle 2 can also spray obliquely upwards, that is, spray in a plane forming a certain angle with the horizontal plane.

[0030] Step d: Dry the tobacco slurry on the conveyor belt 3 to obtain a mesh-like reconstituted tobacco core material 4. That is, after drying, the solids in the tobacco slurry form a mesh structure on the conveyor belt 3 with arc-shaped monofilament surfaces, a flat back surface, and multiple interconnected nodes, i.e., the mesh-like reconstituted tobacco core material. Preferably, the width of the monofilaments in the mesh-like reconstituted tobacco core material 4 is 0.45-1.35 mm, the thickness between the top of the arc-shaped surface and the flat bottom is 0.15-0.30 mm, and the length of the filaments between nodes is 4-30 mm. The mesh-like reconstituted tobacco core material can be directly connected to a molding machine to prepare tobacco core rods, or it can be first rolled and stored, and then unrolled for tobacco core rod preparation. When applied to cigarettes, each cigarette contains 75-150 tobacco core material monofilaments.

[0031] The method for preparing heated cigarette core material of the present invention has a simple processing technology, enabling one-time molding and avoiding secondary cutting or wrinkling. Furthermore, compared with traditional shredding processes, the mesh-like reconstituted core material of the present invention avoids problems such as shredding and core retraction.

[0032] Obviously, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Any changes or modifications to the above embodiments that are within the essential spirit of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A method for preparing heated cigarette core material, characterized in that, include: Step a: After pre-mixing and drying the tobacco leaves, grind them at a low temperature to obtain tobacco powder; Step b: Mix the tobacco powder with water, binder, and smoke-generating agent, and stir to mix the tobacco powder and the agent evenly to obtain tobacco slurry; Step c: The tobacco slurry is injected into multiple nozzles set on a linear slide table. The linear slide table drives the nozzles to reciprocate, thereby forming a mesh-like flow of tobacco slurry on the conveyor belt. as well as Step d: Dry the tobacco slurry on the conveyor belt to obtain a mesh-like reconstituted tobacco core material.

2. The method for preparing heated cigarette core material according to claim 1, characterized in that, The number of linear slides is 2-5.

3. The method for preparing heated cigarette core material according to claim 1, characterized in that, The number of nozzles on one of the linear slides is 75-150.

4. The method for preparing heated cigarette core material according to claim 1, characterized in that, The linear slide is driven by a motor to perform reciprocating motion.

5. The method for preparing heated cigarette core material according to claim 4, characterized in that, In step c, the reciprocating frequency of the linear slide and the linear speed of the conveyor belt are adjustable.

6. The method for preparing heated cigarette core material according to claim 5, characterized in that, The reciprocating frequency of the linear slide is 8-40 Hz, and the linear speed of the conveyor belt is 5-25 m / min.

7. The method for preparing heated cigarette core material according to claim 6, characterized in that, The conveyor belt is a steel belt.

8. The method for preparing heated cigarette core material according to claim 6, characterized in that, The reconstituted cigarette core material is a mesh structure with a single filament surface that is arc-shaped, a flat back surface, and multiple nodes connected.

9. The method for preparing heated cigarette core material according to claim 1, characterized in that, The width of the single filament of the mesh-like reconstituted cigarette core material is 0.45-1.35mm, the thickness between the top of the arc-shaped surface and the flat bottom is 0.15-0.30mm, and the filament length between nodes is 4-30mm.

10. The method for preparing heated cigarette core material according to claim 1, characterized in that, In step d, the reconstituted mesh core material can be directly connected to a molding machine to prepare core rods, or it can be first wound up and stored, and then unwound to prepare core rods.

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