A method of making a tobacco flavor-bearing unit

Abstract

The application discloses a method for manufacturing a tobacco flavor carrier unit, comprising the following steps: S1, pre-pressing a wrapping layer: fixing a polymer material film with a certain thickness on a movable lower mold, driving the upper mold with a certain temperature to effectively deform the polymer material film, forming a cavity with a certain depth, length and width, and manufacturing a wrapping layer with a groove; S2, precisely loading a flavor: positioning the wrapping layer manufactured in S1 in the range of an injection system, and precisely loading a proper amount of flavor into the groove cavity of the wrapping layer under the action of the injection system; S3, heat sealing: positioning the wrapping layer loaded with the quantitative flavor at a packaging position, and bonding the wrapping layer with a shower paper coated with a temperature-sensitive material on the surface under the action of heat sealing, so as to seal and form the flavor carrier unit, and finally obtaining the flavor carrier unit. The flavor carrier unit manufactured by the method can effectively seal the flavor and realize stable manufacturing of the flavor carrier unit.

Description

Technical Field

[0001] This application relates to the field of heated cigarette technology, and in particular to a method for manufacturing a flavoring carrier unit for tobacco. Background Technology

[0002] Currently, the main methods for adding flavorings to heated cigarettes include: using flavoring threads within the cigarette, embedding flavoring capsules in the filter rod, and uniformly mixing flavorings with reconstituted tobacco. These methods all have some issues regarding the long-term preservation and use of the flavorings. However, using a flavoring carrier unit made of specific materials placed inside a heated cigarette can achieve long-term preservation of the flavorings, and the flavorings within the carrier unit can be released evenly and slowly during smoking. Currently, the flavoring carrier units are manufactured manually, which results in inconsistent unit specifications, inaccurate flavoring injection amounts, and insecure sealing. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a method for manufacturing a flavoring carrier unit for tobacco products. It has the advantage of a high degree of automation. The flavoring carrier unit manufactured by the method of the present invention can effectively seal the flavoring and achieve stable manufacturing of the flavoring carrier unit.

[0004] The technical solution provided by this invention is as follows:

[0005] A method for manufacturing a tobacco flavoring carrier unit includes the following steps:

[0006] S1. Coating layer pre-compression molding: A polymer material film of a certain thickness (such as PLA film, PP film and other non-toxic polymer materials) is fixed on a movable lower mold, and the upper mold with a certain temperature on its surface is driven down to effectively deform the polymer material film, forming a cavity with a certain depth, length and width, and making a coating layer with grooves.

[0007] S2, Precise quantitative loading of fragrance: The coating layer obtained in S1 is positioned statically within the range of the injection system, and an appropriate amount of fragrance is precisely quantitatively loaded into the groove cavity of the coating layer under the action of the injection system;

[0008] S3. Hot-press sealing: The packaging layer containing a certain amount of fragrance is positioned at the sealing position. A sealing element (such as coated paper) with a uniformly coated temperature-sensitive material is bonded to the packaging layer under hot pressing. The fragrance carrier unit is sealed and formed, and the fragrance carrier unit is finally obtained.

[0009] Preferably, the polymer material film fixation process in step S1 is performed using a quantitative negative pressure suction method.

[0010] Preferably, in step S1, the upper mold is driven using a cylinder with a diameter of 40-50 mm, under a pressure of 0.2-0.5 MPa.

[0011] Preferably, the surface temperature of the upper mold in step S1 is 70-90°C, more preferably 80°C.

[0012] Preferably, the thickness of the polymer film in step S1 is 55-65 μm, more preferably 60 μm.

[0013] Preferably, in step S1, the pressure plate of the upper mold slowly descends, and when it reaches the polymer material film, the pressure plate first fixes the four sides of the polymer material film so that the surface to be formed is flat. Then, under a certain temperature and pressure, after an action time of 1 to 3 seconds, the polymer material film is effectively deformed to form a cavity.

[0014] Preferably, the dimensions of the cavity in step S1 are: depth 2-2.5mm, length 4.8-5.2mm, and width 2.9-3.2mm, with a preferred depth of 2.2mm, length of 5mm, and width of 3mm.

[0015] Preferably, in step S2, during the loading of the fragrance, the lower mold of the adsorbent polymer film maintains a constant negative pressure state during movement.

[0016] Preferably, the physical form of the fragrance in step S2 is not limited, and it can be solid, liquid or other forms suitable for packaging.

[0017] Preferably, the temperature of the hot pressing process in step S3 is 110-120℃, more preferably 115℃, the pressure is 0.2-0.5 MPa, more preferably 0.5 MPa, and the hot pressing time is 2-3 seconds, more preferably 2.5 seconds.

[0018] This application has the following advantages over the prior art:

[0019] 1. In the method for manufacturing a flavoring carrier unit for tobacco products of this application, the polymer material film can be bonded to the substrate layer with hot melt adhesive uniformly coated on the surface while maintaining a flat state around the area to be bonded, so that the flavoring carrier unit formed is well sealed.

[0020] 2. In the method for manufacturing the flavoring carrier unit for tobacco in this application, the flavoring injection system can accurately and quantitatively load the flavoring, and ensure that no flavoring remains in the bonding area of ​​each flavoring carrier unit during the loading process (extensive experiments have shown that if flavoring remains in the bonding area of ​​the polymer material film of the flavoring carrier unit, it generally cannot be bonded), and the flavoring carrier unit can be stably manufactured.

[0021] 3. The method for manufacturing a flavoring carrier unit for tobacco products in this application has explored a set of important process parameters in the manufacturing process of the flavoring carrier unit. These process parameters directly determine whether the flavoring carrier unit can achieve a stable seal. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a process flow diagram of the method for manufacturing a tobacco flavoring carrier unit in an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figure 1 As shown, an embodiment of the present invention provides a method for manufacturing a tobacco flavoring carrier unit, comprising the following steps:

[0026] S1. Coating layer pre-compression molding: A polymer material film of a certain thickness (such as PLA film, PP film and other non-toxic polymer materials) is fixed on a movable lower mold, and the upper mold with a certain temperature on its surface is driven down to effectively deform the polymer material film, forming a cavity with a certain depth, length and width, and making a coating layer with grooves.

[0027] S2. Precise quantitative loading of fragrance: The coating layer obtained in S1 is statically positioned within the injection system. An appropriate amount of fragrance is precisely quantitatively loaded into the groove cavity of the coating layer under the action of the injection system. The amount of fragrance injected each time is stable at 15-25 microliters.

[0028] S3. Hot-press sealing: The packaging layer containing a certain amount of fragrance is positioned at the sealing position. The sealing element (such as coated paper) with a temperature-sensitive material (such as hot melt adhesive) evenly coated on the surface (the sealing element is placed horizontally above the grooved polymer material film) is bonded to the packaging layer under hot pressing. The fragrance carrier unit is sealed and formed, and the fragrance carrier unit is finally obtained.

[0029] In this embodiment, the polymer material membrane fixing process in step S1 is performed using a quantitative negative pressure suction. The polymer material membrane has a thickness of 60 μm. Experiments show that the flavor carrier unit made of a polymer material membrane with a suitable thickness has better sealing performance. Considering the safety of tobacco materials, the safety of the polymer material membrane has been verified, therefore, the polymer material membrane was selected.

[0030] In this embodiment, the upper mold in step S1 is driven by a cylinder with a diameter of 50mm, under a pressure of 0.5MPa. The surface temperature of the upper mold in step S1 is 80℃. The upper mold is heated because it needs to contact the polymer film, allowing the polymer film to be deformed under pressure in a good plastic state, forming a groove cavity. The pressure plate of the upper mold descends slowly, and when it reaches the polymer film, the pressure plate first fixes the four sides of the polymer film, making its surface to be formed flat. Then, under a certain temperature and pressure, after an action time of 2 seconds, the polymer film undergoes effective deformation, forming a cavity. The slow descent of the pressure plate ensures uniform deformation of the polymer film. The experimental process shows that if the descent speed is too fast, the polymer film is easily crushed. Therefore, the descent speed is determined according to the experimental and manufacturing speed requirements. With the four sides of the polymer film fixed, the four sides will remain flat during the hot pressing process. Only a flat polymer film can achieve good adhesion and sealing with the substrate layer.

[0031] In this embodiment, the dimensions of the cavity in step S1 are: depth 2-2.5mm, length 4.8-5.2mm, and width 2.9-3.2mm.

[0032] In this embodiment, during the loading of the fragrance in step S2, the lower mold of the adsorbent polymer material film maintains a constant negative pressure state during movement, ensuring high positional stability of the coating layer during loading.

[0033] In this embodiment, the physical form of the fragrance in step S2 is not limited; it can be liquid, solid particles, powder, or paste, etc.

[0034] In this embodiment, the temperature of the hot pressing process in step S3 is 115°C, the pressure is 0.5 MPa, and the hot pressing time is 2.5 s.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for manufacturing a tobacco flavoring carrier unit, characterized in that, Includes the following steps: S1. Coating layer pre-compression molding: A polymer material film of a certain thickness is fixed on a movable lower mold, and an upper mold with a certain temperature on its surface is driven down to effectively deform the polymer material film, forming a cavity with a certain depth, length and width, and making a coating layer with grooves. The upper mold platen slowly descends, and when it reaches the polymer material film, the platen first fixes the four sides of the polymer material film so that the surface to be formed is flat. Then, under a certain temperature and pressure, after an action time of 1 to 3 seconds, the polymer material film is effectively deformed to form a cavity. The dimensions of the cavity are: depth 2 to 2.5 mm, length 4.8 to 5.2 mm, and width 2.9 to 3.2 mm. S2, Precise quantitative loading of fragrance: The coating layer obtained in S1 is statically positioned within the range of the injection system, and an appropriate amount of fragrance is precisely quantitatively loaded into the groove cavity of the coating layer under the action of the injection system; S3. Hot-press sealing: The packaging layer containing a certain amount of fragrance is positioned at the sealing position. The sealing element with a uniformly coated temperature-sensitive material is bonded to the packaging layer under hot-pressing. The temperature of the hot-pressing process is 110-120℃, the pressure is 0.2-0.5Mpa, and the hot-pressing time is 2-3s. The fragrance carrier unit is sealed and formed, and the fragrance carrier unit is finally obtained.

2. The method for manufacturing a tobacco flavoring carrier unit according to claim 1, characterized in that, In step S1, the polymer material film is fixed by using a quantitative negative pressure suction.

3. The method for manufacturing a tobacco flavoring carrier unit according to claim 1, characterized in that, In step S1, the upper mold is driven using a cylinder with a diameter of 40-50 mm, under a pressure of 0.2-0.5 MPa.

4. The method for manufacturing a tobacco flavoring carrier unit according to claim 1, characterized in that, In step S1, the surface temperature of the upper mold is 70–90°C.

5. The method for manufacturing a tobacco flavoring carrier unit according to claim 1, characterized in that, The thickness of the polymer film in step S1 is 55–65 μm.

6. The method for manufacturing a tobacco flavoring carrier unit according to claim 2, characterized in that, In step S2, during the loading of the fragrance, the lower mold of the adsorbent polymer film maintains a constant negative pressure state during its movement.

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