Method for heating cigarette sheets into shreds

Abstract

The present invention discloses a method for producing heated cigarette sheets into shredded form. The method comprises stacking the heated cigarette sheets longitudinally and then cutting them through a conventional cigarette roller-type shredder. This method utilizes a cigarette shredder to produce shredded sheets of a predetermined length and width, resulting in a simple process and low cost. The resulting heated cigarette sheets are high in strength and possess excellent processing resistance.

Description

Technical Field

[0001] The present invention relates to a method for cutting heated cigarettes into shreds, in particular to a method for forming heated cigarette sheets into shreds, and belongs to the technical field of heated cigarettes. Background Art

[0002] Heat-not-burn (HTB) cigarettes, also known as heated cigarettes, are a new type of harm-reducing tobacco product. Led by tobacco giants such as Philip Morris International and British American Tobacco, they have gradually gained acceptance among consumers. Some products, such as Philip Morris International's IQOS, British American Tobacco's Glo, and Japan Tobacco's Ploom, have already captured a significant market share. Some institutions predict that the market will continue to expand, replacing 30% of the market share of traditional cigarettes abroad by 2025. HTB cigarettes generate aerosols and release flavoring substances through a heat-distillation process, satisfying consumers' physiological needs to a certain extent. Compared with traditional cigarettes, HTB cigarettes differ significantly in their smoking method, smoking medium, and aerosol composition. They contain fewer major chemical components and release a lower amount, with an average reduction of 90% in potentially harmful substances.

[0003] Currently, the mainstream HCI smoking medium is tobacco flakes produced using slurry, roller-pressed, and paper-made methods. Due to the patent barrier of Philip Morris International's IQOS ordered flake process, other companies have attempted to use traditional cigarette shredding and rolling methods to produce relatively ordered flakes. However, fixed-length and fixed-width shredding is beneficial for maintaining the orderliness of the flakes during rolling and splicing. The current roller-cutting method for fixed-length shredding has a narrow width range of 0.8-1.2mm, requiring the replacement of roller cutters of varying widths. This results in poor adjustability and low processing efficiency. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention aims to provide a method for heating cigarette sheets into shredded tobacco. The method can efficiently produce shredded tobacco sheets of fixed length and width, is simple, and has low cost.

[0005] In order to achieve the above technical objectives, the present invention provides a method for heating cigarette sheets into shreds, wherein the method comprises stacking the heated cigarette sheets longitudinally and then cutting them into shreds using a traditional cigarette roller-type shredder.

[0006] As a preferred solution, the stacking thickness of the heated cigarette sheets is 30 to 45 mm.

[0007] As a preferred solution, the heated cigarette sheets are stacked longitudinally at an angle, and the angle formed between the inclined surface and the horizontal plane is less than 90 degrees. Compared with vertical stacking, the inclined stacking method can reduce sheet slippage during the shredding process.

[0008] As a preferred solution, the cutter spacing of the cutter is controlled to be 20-40 mm. By controlling the cutter spacing, the length of the tobacco can be adjusted, and controlling the cutter spacing within a suitable range can produce tobacco with appropriate length and excellent performance.

[0009] As a preferred solution, the cutter speed of the cutter is controlled at 200-300 r / min. Controlling the cutter speed can adjust the cut width. The faster the cutter speed, the smaller the width. Controlling the cutter speed within a suitable range can produce tobacco with appropriate width and excellent performance.

[0010] As a preferred solution, the knife door pressure of the shredder is controlled to be 7 to 12 kN.

[0011] As a preferred solution, the width of the heated cigarette sheet is the same as the width of the feed port of the cutter.

[0012] As a preferred solution, the length of the heated cigarette sheet is 0.5 to 1.5 m and the width is 28 to 36 cm.

[0013] As a preferred solution, the heated cigarette sheet is prepared by a thick slurry method. Since the sheet prepared by the thick slurry method has a high longitudinal tensile strength, the sheet yarn produced by the method has high strength and good processing resistance.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The obtained heated cigarette thin sheet utilizes the higher longitudinal tensile strength of the thick pulp method thin sheet and has good processing resistance;

[0016] (2) Using a traditional cigarette cutter, it is possible to produce fixed-length thin slices, and the cut width can be flexibly adjusted in a wide range of 0.4 to 1.5 mm, which can effectively circumvent the patent barriers of Philip Morris International's ordered thin slice process;

[0017] (3) The operation is simple, the process flow is short, the preparation efficiency is high, the cost is low, and it is suitable for industrial-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram (top view) of stacking heated cigarette sheets of the present invention.

[0019] Figure 2 This is a feeding schematic diagram (top view) of a conventional cigarette cutter according to the present invention.

[0020] Figure 3 Schematic diagram of the hob tooth spacing of the conventional cigarette cutter of the present invention.

[0021] Figure 4Schematic diagram of heated cigarette slice slices (top view).

[0022] Figure 5 This is a real picture of the thin silk obtained in Example 1.

[0023] Figure 6 This is a real picture of the thin silk obtained in Example 2.

[0024] Figure 7 This is the shape of the slice before shredding in Comparative Example 1.

[0025] Figure 8 This is a physical picture of the thin silk prepared in Comparative Example 1.

[0026] Figure 9 This is a diagram showing the arrangement of thin slices of the cigarette prepared in Example 1.

[0027] Figure 10 This is a diagram showing the arrangement of thin slices of the cigarette prepared in Comparative Example 1. DETAILED DESCRIPTION

[0028] The following describes in detail the specific embodiments of the invention in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only a portion of the embodiments of the invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the invention without inventive effort are also within the scope of protection of the invention.

[0029] Example 1

[0030] The following is a preparation process of heating cigarette sheets into shreds according to the present invention, and the specific steps are as follows:

[0031] (1) Heat the cigarette sheet raw material according to Figure 4 Cut into slices with a width of 28 cm and a length of 1.3 m along the horizontal direction of the line;

[0032] (2) Slice the slices obtained in step (1) according to Figure 1 150 slices are stacked vertically in a 30mm thick stack. They are then fed to the feed port of a traditional cigarette roller cutter (roller tooth spacing is 35mm, roller speed is 200r / min, and knife door pressure is 11KN) through an automatic feeder. They are then fed to the knife door via a chain for fixed-width shredding. The shredded strips are 1.0mm wide and 35mm long. Figure 5 shown.

[0033] The thin slices prepared above are made into cigarettes, and after the cigarettes are cut open, the arrangement of the thin slices is as follows: Figure 9 As shown in the figure, it can be seen that the arrangement of the thin sheets is highly orderly, with almost no broken threads or fragments.

[0034] Comparative Example 1

[0035] The comparative example is to first make the slices into small pieces of a certain size and then cut them into strips. The specific steps are as follows:

[0036] (1) Beat the heated cigarette sheet raw material online into Figure 7 Small piece shown;

[0037] (2) The small pieces obtained in step (1) are automatically fed to the feed port of a conventional cigarette roller-type shredder and transported to the knife door via a chain for shredding. The shredded width is 0.8 mm. Figure 8 shown.

[0038] The thin slices prepared under the conditions of the comparative example are made into cigarettes. After the cigarettes are cut open, the arrangement of the thin slices is as follows: Figure 10 As shown in the figure, it can be seen that the order of the arrangement of the thin sheets is low, and there are broken threads and fragments.

[0039] Example 2

[0040] The following is another preparation process of heating cigarette sheets into shreds according to the present invention, and the specific steps are as follows:

[0041] (1) Heat the cigarette sheet raw material according to Figure 4 Cut into slices with a width of 28 cm and a length of 1.3 m along the horizontal direction of the line;

[0042] (2) Slice the slices obtained in step (1) according to Figure 1 150 slices are stacked in a tilted stacking manner with a stacking thickness of 30mm. They are then transported to the feed port of a traditional cigarette roller-type shredder (the roller tooth spacing is 30mm, the roller speed is 240r / min, and the knife door pressure is 11KN) through an automatic feeder. They are then transported to the knife door via a chain for fixed-width shredding. The shredded shredder has a width of 0.8mm and a length of 30mm. Figure 6 In addition, compared with Example 1, this embodiment has almost no sheet slippage during the shredding process.

[0043] The thin slices prepared under the conditions of this embodiment were made into cigarettes. After the cigarettes were cut open, the arrangement of the thin slices was similar to that in Example 1. The arrangement of the thin slices was highly ordered, with almost no broken slices or debris.

Claims

1. A method for heating cigarette sheets into shredded tobacco, characterized in that: The heated cigarette sheets are stacked longitudinally and then cut into shreds by a conventional cigarette rolling knife cutter. The heated cigarette sheet is prepared by a thick slurry method; The stacking thickness of the heated cigarette sheets is 30-45 mm; The heated cigarette sheets are stacked in a longitudinally inclined manner, and the angle formed by the inclined surface and the horizontal plane is less than 90 degrees.

2. The method for heating cigarette sheets into shredded tobacco according to claim 1, characterized in that: The hob spacing of the shredder is controlled to be 20-40 mm.

3. The method for heating cigarette sheets into shredded tobacco according to claim 1, characterized in that: The hob speed of the shredder is controlled to be 200-300 r / min.

4. The method for heating cigarette sheets into shredded tobacco according to claim 1, 2 or 3, characterized in that: The knife door pressure of the shredder is controlled to be 7~12KN.

5. The method for heating cigarette sheets into shredded tobacco according to claim 1, characterized in that: The width of the heated cigarette sheet is the same as the width of the feed opening of the cutter.

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