Paper tube processing equipment, inner covering paper tube, preparation method and heating non-combustion cigarette

Abstract

The invention discloses paper tube processing equipment, an inner covering paper tube, a preparation method and a heating non-combustion cigarette. The paper tube processing equipment comprises a paper tube former, cellulose paper is wound on the paper tube former, and the cellulose paper moves and is wound in the length direction of the paper tube former to form a paper tube; the first end of the liquid guide pipe is communicated with the isolation coating slurry; and the paper tube former can enable the paper tube to move along the length direction of the paper tube former, so that the isolation coating slurry is coated on the inner wall surface of the paper tube. According to the paper tube processing equipment, after the paper material is wound into the paper tube, the paper tube is coated with the isolation coating, it can be guaranteed that the paper tube is evenly coated with the isolation coating, gaps are avoided, and then the use experience feeling of a user is improved.

Description

Technical Field

[0001] The present invention generally relates to the technical field of smoking articles, and in particular to a paper tube processing device, an inner-coated paper tube and a preparation method, and a heat-not-burn cigarette. Background Art

[0002] Heat-not-burn cigarettes are a type of tobacco that is heated by an external heat source. The tobacco product reaches an atomization temperature at 250°C to 350°C, providing consumers with the feeling of smoking a cigarette. Traditional cigarettes are burned and cracked at high temperatures, which induces a series of uncontrollable physical and chemical changes, so the harmful gas components in tobacco are difficult to effectively control. In comparison, heat-not-burn cigarettes are heated at low temperatures rather than burned. They are heated at a set temperature, and the heating process is relatively controllable, avoiding uncontrollable reactions, and the harmful substances in tobacco can be greatly reduced.

[0003] In the related art, a paper material is made by directly coating an isolation coating on the surface of cellulose paper, and then each piece of cellulose paper coated with the isolation coating is rolled up to form a paper tube. The paper tube is then assembled with a filter device, a firmware and an aerosol matrix to form a heat-not-burn cigarette. However, in the process of rolling each piece of cellulose paper coated with the isolation coating, gaps are easily generated between each piece of paper, which affects the use effect of the heat-not-burn cigarette and thus reduces the consumer's use experience. Summary of the invention

[0004] In view of the above-mentioned defects or shortcomings in the prior art, it is desired to provide a paper tube processing equipment, an inner-coated paper tube and a preparation method, and a heat-not-burn cigarette, which are formed by first winding cellulose paper into a paper tube and then applying an isolation coating to the inner wall surface of the paper tube. The structure is simple, and the isolation coating can be evenly applied to improve the quality of the paper material.

[0005] In a first aspect, the present invention provides a paper tube processing device, the paper tube processing device comprising:

[0006] A paper tube former, on which cellulose paper is wound, and the cellulose paper moves along the length direction of the paper tube former to be wound to form a paper tube;

[0007] A liquid guide tube, a first end of which is connected to the isolation coating slurry;

[0008] The paper tube former can move the paper tube along the length direction of the paper tube former so that the isolation coating slurry is coated on the inner wall surface of the paper tube.

[0009] As an optional solution, the cellulose paper comprises at least two sheets, and the at least two sheets of cellulose paper are moved along the length direction of the paper tube former and wound to form a paper tube.

[0010] As an optional solution, the second end of the liquid guiding tube extends toward the paper tube former and extends into the interior of the paper tube.

[0011] As an optional solution, at least one discharge port is provided on the liquid guiding tube, and the at least one discharge port is located on the side wall of the liquid guiding tube close to the second end and is arranged along the circumference of the liquid guiding tube.

[0012] As an optional solution, at least one discharge port is extended from the side wall of the liquid guiding tube toward a direction away from the liquid guiding tube.

[0013] As an optional solution, the paper tube processing equipment also includes: a laminator, which is located in the center of the paper tube and connected to the second end of the liquid guide tube. When the paper tube former drives the paper tube to move along the length direction of the laminator, the laminator squeezes the isolation coating slurry on the inner wall of the shaped paper tube.

[0014] As an optional solution, a cavity is defined between the film covering device, the liquid guiding tube and the inner wall of the paper tube, and the cavity includes a first section and a second section, and the width of the first section is greater than the width of the second section.

[0015] As an optional solution, a avoidance zone is formed circumferentially on one side of the film covering device close to the catheter. The avoidance zone is formed by the outer wall of the film covering device being inclined toward the center of the film covering device. The width of the film covering device gradually decreases in the direction extending from the end of the film covering device away from the catheter toward the end of the film covering device close to the catheter.

[0016] As an optional solution, the paper tube processing equipment also includes: a drying chamber, and the laminator is located in the drying chamber.

[0017] As an optional solution, a plurality of fixed wheels are arranged in the drying chamber, and the plurality of fixed wheels are spaced apart to form a fixed bracket, and the laminator is fixed on the fixed bracket.

[0018] As an optional solution, the length direction of the paper tube former is parallel to the vertical direction, and the liquid guiding tube is arranged along the vertical direction.

[0019] As an optional solution, the paper tube processing equipment also includes:

[0020] At least one paper support frame, one end of each cellulose paper is respectively wound on the paper support frame, and the other end of each cellulose paper is respectively wound on a paper tube former;

[0021] At least one paper guide wheel is correspondingly arranged between each paper support frame and the paper tube former. The cellulose paper contacts the paper guide wheel and is used to adjust the tension of the cellulose paper between the paper support frame and the paper former to ensure that the cellulose paper remains flat.

[0022] As an optional solution, the paper tube processing equipment also includes: a liquid storage bin, the liquid storage bin is used to hold the isolation coating slurry, and the liquid guide pipe is connected to the liquid storage bin.

[0023] As an optional solution, a liquid pump is also included. The liquid pump is installed between the liquid storage bin and the liquid guide pipe and is used to transport the isolation coating slurry in the liquid storage bin to the liquid guide pipe.

[0024] In a second aspect, the present invention provides an inner-covered paper tube, which is obtained by processing the paper tube processing equipment of the first aspect.

[0025] In a third aspect, the present invention provides a method for processing an inner-covered paper tube, using the paper tube processing equipment of the first aspect, comprising the following steps:

[0026] The cellulose paper is formed into a tubular paper tube by a paper former;

[0027] The pre-prepared isolation coating slurry is injected into the liquid guide tube, and as the paper tube former moves, the isolation coating slurry is coated on the inner wall surface of the paper tube; wherein the isolation coating slurry includes water, ethanol, wax, polysaccharide, polyethylene glycol and polylactic acid.

[0028] In a fourth aspect, the present invention provides a heat-not-burn cigarette, comprising the paper tube of the second aspect.

[0029] The paper tube processing equipment provided by the present invention pre-winds at least two sheets of cellulose paper into a paper tube through a paper tube former, and a liquid guide tube extends into the inner wall of the paper tube. The paper tube is driven to move by the paper tube former, so that the isolation coating slurry is evenly coated on the inner wall surface of the paper tube, which can effectively ensure that the inner wall of the paper tube is evenly coated with the isolation coating, thereby improving the paper smell during the suction process, thereby enhancing the consumer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a paper tube processing device according to an embodiment of the present application;

[0031] Figure 2 It is a partial enlarged view of the connection between the laminator and the liquid guide tube in the paper tube processing equipment of the embodiment of the present application;

[0032] Figure 3 This is a schematic cross-sectional view of an inner-covered paper tube according to an embodiment of the present application;

[0033] Figure 4 It is a schematic diagram of a process for preparing a paper material according to an embodiment of the present application;

[0034] Figure 5 It is a schematic flow chart of another method for preparing paper material according to an embodiment of the present application.

[0035] In the figure,

[0036] 100. Paper tube processing equipment;

[0037] 10. Paper tube former; 20. Liquid guide tube; A1. First end; A2. Second end; 21. Discharge port;

[0038] 30. Laminator, 31. Avoidance zone;

[0039] 40, cavity, 41, first section, 42, second section;

[0040] 50. Drying chamber, 51. Fixed wheel;

[0041] 60. paper material support frame, 70. paper material guide wheel, 80. material liquid storage bin, 90. liquid material pump;

[0042] 200. Paper tube, 210. Cellulose paper, 220. Release coating. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail with reference to the embodiments below.

[0045] In a first aspect, an embodiment of the present application provides a paper tube processing device 100, such as Figure 1-3 As shown, the paper tube processing equipment 100 includes:

[0046] A paper tube former 10, at least two cellulose papers 210 are wound around the paper tube former 10, and at least two cellulose papers 210 are moved along the length direction of the paper tube former 10 to be wound to form a paper tube;

[0047] A liquid guide tube 20, wherein a first end A1 of the liquid guide tube 20 is connected to the isolation coating slurry 220, and a second end A2 of the liquid guide tube 20 extends toward the paper tube former 10 and is located inside the paper tube;

[0048] The paper tube former 10 can move the paper tube along the length direction of the paper tube former 10 so that the isolation coating slurry 220 is coated on the inner wall surface of the paper tube.

[0049] It can be understood that the paper tube former 10 is mainly used to roll at least two cellulose papers 210 to form a paper tube; wherein, the paper tube former 10 can be of any structure, such as but not limited to cylindrical or spiral, and the embodiments of the present application do not specifically limit this; and, the paper tube former 10 rotates while moving along its length direction during operation, and at least two cellulose papers are rolled into a tube during the rotation of the paper tube former, and gradually form a paper tube during the movement of the paper tube former along the length direction.

[0050] In actual use, each cellulose paper is wound on the paper tube former 10 respectively. As the paper tube former 10 rotates and moves, each cellulose paper is spirally wound to form a paper tube, and each cellulose paper of the wound paper tube fits tightly to avoid forming gaps.

[0051] It can also be understood that the liquid guide tube 20 is mainly used to connect the isolation coating slurry and guide the isolation coating slurry to the inner wall surface of the paper tube; wherein the isolation coating slurry is prepared in advance, the first end A1 of the liquid guide tube 20 is connected to the isolation coating slurry, and the second end A2 of the liquid guide tube 20 passes through the paper tube former 10 and extends into the paper tube. As the paper tube former moves, the formed paper tube moves in a direction away from the paper tube former, so that the isolation coating slurry in the liquid guide tube 20 is evenly coated on the inner wall surface of the paper tube. It can be seen that coating the isolation coating on the inner wall surface of the wound paper tube can ensure that the inner wall surface of the paper tube is evenly coated with the isolation coating, and the coating thickness of the isolation coating can be adjusted according to actual needs, and cooling materials, flavoring materials and other substances can be added to the coating, and only drying is required once in the subsequent drying process. Compared with the prior art, it avoids the problem of gaps after coating the isolation coating on each cellulose paper and then winding to form a paper tube, while saving processing steps, improving production efficiency, and ensuring that users have a good experience.

[0052] The paper tube processing equipment of the embodiment of the present application solves the problem that the paper tubes processed in the prior art have gaps, which affects the user experience. The embodiment of the present application pre-winds at least one cellulose paper into a paper tube through a paper tube former, and the liquid guide tube extends into the inner wall of the paper tube. The paper tube former drives the paper tube to move, so that the isolation coating slurry is evenly coated on the inner wall of the paper tube to avoid gaps. It can effectively ensure that the inner wall of the paper tube is evenly coated with the isolation coating, and the coating thickness can be adjusted according to actual needs, so as to improve the smell of paper impurities during the suction process, thereby enhancing the consumer experience, and at the same time, it can save processing steps and improve production and processing efficiency.

[0053] As an achievable manner, at least one discharge port 21 is provided on the liquid guiding tube 20 . The at least one discharge port 21 is located on the side wall of the liquid guiding tube 20 close to the second end A2 and is arranged along the circumference of the liquid guiding tube 20 .

[0054] The discharge port 21 in this embodiment is used for the isolation coating slurry in the liquid guiding tube 20 to flow out, and the discharge ports are arranged at intervals along the circumference of the liquid guiding tube 20, which is conducive to ensuring that the isolation coating slurry is evenly coated on all parts of the inner wall surface of the paper tube.

[0055] It is understandable that the number of discharge ports 21 may be one, two or more than two. In a preferred embodiment, at least two discharge ports 21 are evenly spaced, which helps to ensure uniform coating of the isolation coating slurry.

[0056] In some embodiments, at least one discharge port 21 extends from the side wall of the liquid guiding tube 20 in a direction away from the liquid guiding tube 20. In this embodiment, the discharge port 21 is closer to the inner wall of the paper tube, which is conducive to reliably coating the isolation coating slurry on the inner wall of the paper tube.

[0057] As a feasible method, the paper tube processing equipment 100 also includes: a laminator 30, which is located inside the paper tube and connected to the second end of the central liquid guide tube 20. When the paper tube former 10 drives the paper tube to move along the length direction of the laminator 30, the laminator 30 squeezes the isolation coating slurry 220 on the inner wall of the shaped paper tube.

[0058] It can be understood that the laminator 30 can be cylindrical, and the laminator 30 is located in the center of the paper tube, and a gap is formed between the laminator 30 and the inner wall of the paper tube, and the gap is used to accommodate the isolation coating. Since the isolation coating slurry has a certain thickness on the inner wall of the paper tube, the laminator 30 contacts and squeezes the isolation coating slurry, which is conducive to uniform coating of the isolation coating on the inner wall of the paper tube, and at the same time, the isolation coating slurry can also be shaped.

[0059] By adjusting the size (diameter) of the laminator 30, the gap between the laminator and the inner wall of the paper tube can be adjusted, so that the thickness of the coated isolation slurry can be adjusted.

[0060] In this embodiment, as the paper tube former moves, the isolation coating slurry on the paper tube contacts and is squeezed by the laminator, so that the isolation coating is evenly coated on the inner wall surface of the paper tube.

[0061] In some embodiments, Figure 2 As shown, a cavity 40 is defined between the film covering device 30 , the liquid guiding tube 20 and the inner wall of the paper tube. The cavity 40 includes a first section 41 and a second section 42 . The width of the first section 41 is greater than the width of the second section 42 .

[0062] It should be noted that the first section 41 refers to the area of ​​the laminator 30 close to the catheter 20 and the area between the catheter 20 and the inner wall of the paper tube; the second section 42 refers to the area between the other areas of the laminator 30 except the area close to the catheter 20 and the inner wall of the paper tube.

[0063] In this embodiment, the width of the first section 41 is greater than that of the second section 42. The first section 41 is used to allow the isolation coating slurry to stay in contact with the inner wall of the paper tube, and the second section 42 is used to allow the isolation coating to be shaped on the inner wall of the paper tube.

[0064] In a preferred embodiment, a avoidance area 31 is formed circumferentially on one side of the film covering device 30 close to the catheter 20. The avoidance area 31 is formed by the outer wall of the film covering device 20 being inclined toward the center of the film covering device 20. The width of the film covering device 30 gradually decreases in a direction extending from the end of the film covering device 30 away from the catheter 20 toward the end of the film covering device 30 close to the catheter 20.

[0065] It is understandable that the side wall of one end of the film covering device 30 close to the catheter 20 is in a contracted shape, for example, but not limited to, a cone or a truncated cone.

[0066] The avoidance zone in the embodiment of the present application is conducive to ensuring reliable contact between the isolation coating slurry and the inner wall surface of the paper tube, and is conducive to the laminator 30 squeezing the isolation coating slurry toward the inner wall surface of the paper tube during the movement of the paper tube, so that the isolation coating is evenly coated on the inner wall surface of the paper tube.

[0067] In some embodiments, the paper tube processing equipment 100 further includes: a drying chamber 50, and a laminator 30 is located in the drying chamber 50. The drying chamber in this embodiment is used to dry the isolation coating on the inner wall of the paper tube, and the laminator 30 is located in the drying chamber 50, which is conducive to ensuring that the isolation coating slurry is dried while being shaped, ensuring that the isolation coating is reliably coated on the inner wall of the paper tube, and improving the production and processing efficiency.

[0068] The drying chamber 50 may be dried in any manner, such as but not limited to an air drying oven, a vacuum drying oven, etc.

[0069] Furthermore, in some other embodiments, a plurality of fixed wheels 51 are disposed in the drying chamber 50, and the plurality of fixed wheels 51 are spaced apart to form a fixed bracket, and the laminator 30 is fixed on the fixed bracket.

[0070] The fixed wheel in this embodiment is used to fix the laminator, ensuring that the isolation coating slurry can be reliably dried while the laminator is shaping the isolation coating slurry.

[0071] There may be two or more fixed wheels, which are spaced apart and arranged in opposite areas in the drying chamber, and a fixed bracket is defined between the plurality of fixed wheels for fixing the laminator.

[0072] In a preferred embodiment, the length direction of the paper tube former 10 is parallel to the vertical direction, and the liquid guiding tube 20 is arranged along the vertical direction.

[0073] In the present embodiment, the length direction of the paper tube former 10 is parallel to the vertical direction, so that the paper tube former 10 drives the paper tube to move along the vertical direction, and the liquid guide tube 20 is arranged along the vertical direction, so that the liquid guide tube 20 coats the isolation coating slurry on the inner wall of the paper tube along the vertical direction. Due to the effect of gravity, the isolation coating slurry can be evenly coated on the inner wall of the paper tube. Compared with the existing coating along the horizontal direction, the embodiment of the present application avoids the problem of uneven coating caused by the isolation coating slurry falling on one side of the inner wall of the paper tube due to gravity. The paper tube former and the liquid guide tube of the embodiment of the present application are arranged along the vertical direction, which is conducive to ensuring that the isolation coating slurry is evenly coated on the inner wall of the paper tube.

[0074] As an achievable manner, the paper tube processing equipment 100 further includes:

[0075] At least one paper support frame 60, one end of each cellulose paper 210 is respectively wound on the paper support frame 60, and the other end of each cellulose paper 210 is respectively wound on the paper tube former 10;

[0076] At least one paper guide wheel 70 is correspondingly arranged between each paper support frame 10 and the paper tube former 10. The cellulose paper 210 contacts the paper guide wheel 70 to adjust the tension of the cellulose paper 210 between the paper support frame 60 and the paper former 10 to ensure that the cellulose paper 210 remains flat.

[0077] The paper support frame 60 is mainly used to support and fix the cellulose paper 210. One end of the cellulose paper 210 is wound on the paper support frame 60, and the other end is wound on the paper former 10, which is conducive to ensuring that the cellulose paper is reliably wound to form a paper tube.

[0078] The paper guide wheel 70 is used to guide the cellulose paper 210, adjust the tension of the cellulose paper between the paper support frame 60 and the paper former 10, and ensure that the cellulose paper is always in a flat state, thereby avoiding the problem of wrinkles when forming a paper tube, which affects the use effect.

[0079] As a feasible manner, the paper tube processing equipment 100 further includes: a liquid storage bin 80 , the liquid storage bin 80 is used to contain the isolation coating slurry, and the liquid guide tube 20 is connected to the liquid storage bin 80 .

[0080] The liquid storage bin in this embodiment is conducive to ensuring convenient storage of the isolation coating slurry and ensuring continuous supply of the isolation coating slurry to the liquid guide tube.

[0081] Furthermore, in some embodiments, a liquid pump 90 is further included, which is installed between the liquid storage bin 80 and the liquid guide tube 20 and is used to transport the isolation coating slurry in the liquid storage bin 80 to the liquid guide tube 20. The liquid pump 90 in this embodiment is mainly used to provide power to guide the isolation coating slurry in the liquid storage bin into the liquid guide tube 20 to ensure reliable coating of the isolation coating on the paper tube.

[0082] In summary, the paper tube processing equipment of the embodiment of the present application pre-winds at least one sheet of cellulose paper into a paper tube through a paper tube former, and the liquid guide tube extends into the inner wall of the paper tube, and the paper tube is driven to move by the paper tube former, so that the isolation coating slurry is evenly coated on the inner wall surface of the paper tube, which can effectively ensure that the inner wall of the paper tube is evenly coated with the isolation coating, thereby improving the smell of paper impurities during the suction process, thereby enhancing the consumer experience;

[0083] Moreover, the provision of the laminator further helps to ensure that the isolation coating slurry is evenly coated on the inner wall surface of the paper tube.

[0084] In the second aspect, the embodiment of the present application provides an inner-covered paper tube, which is obtained by processing the paper tube processing equipment of the first aspect. It is understandable that the inner-covered paper tube has all the characteristics and advantages of the paper tube processing equipment, which will not be repeated here. In general, the inner-covered paper tube can effectively isolate the paper smell generated by the cellulose paper during the heating process, improve the aroma value of the aerosol, and can also reduce the temperature of the aerosol, thereby improving the consumer experience.

[0085] In some embodiments, Figure 3 As shown, the inner-coated paper tube 200 comprises: a paper tube formed by winding at least two sheets of cellulose paper 210 and an isolation coating 220 coated at least on the inner wall surface of the paper tube;

[0086] The isolation coating 220 includes the following components: wax, polysaccharide, polyethylene glycol wax, polysaccharide and polyethylene glycol in a weight ratio of (5-15):(1-25):(1-10).

[0087] It should be noted that the cellulose paper can be any fiber paper currently applicable to the cigarette field, such as but not limited to wood pulp fiber, coniferous wood pulp, hardwood pulp and hemp pulp.

[0088] The release coating may be applied to one surface of the cellulose paper or to two opposing surfaces of the cellulose paper.

[0089] Among them, polysaccharide is the main component of the isolation coating, which is used to isolate the paper from producing paper odor during the heating process; wax and polyethylene glycol are mainly used to improve the problem of increased thickness and poor toughness of paper caused by wax coating. Wax and polyethylene glycol are beneficial to improve the toughness of cellulose paper, avoid paper chipping, and make the paper have good bending properties, which can be bent at will for the preparation of cigarettes.

[0090] It is understood that the weight ratio of wax, polysaccharide and polyethylene glycol can be, but is not limited to, 5:1:1, 10:7:2, 15:1:1, 7:25:10, 13:24:7, 1:19:8, etc.; the ratio of wax, polysaccharide and polyethylene glycol disclosed in the embodiment of the present application is conducive to ensuring that the isolation coating can reliably isolate the paper smell generated by the cellulose paper during the addition process, and at the same time can ensure that the paper has good toughness, is not easy to fall off, is not easy to break, etc. When the weight of the polysaccharide is less than 1, the paper smell of the cellulose paper cannot be effectively isolated; when the weight of the polysaccharide is higher than 25, the thickness of the paper is high and the toughness of the paper is reduced; when the weight of the wax is lower than 5, the toughness of the paper cannot be effectively improved, and when the weight of the wax is higher than 25, the hardness of the paper is insufficient and easy to deform; when the weight of the polyethylene glycol is lower than 1, the toughness of the paper is ineffectively improved; when the weight of the polyethylene glycol is higher than 10, the hardness of the paper is insufficient.

[0091] The embodiment of the present application solves the problem that the paper tube in the prior art generates a paper smell during the heating process. The embodiment of the present application can effectively isolate the paper smell generated by the cellulose paper during the heating process by coating an isolation coating on the surface of the cellulose paper. The isolation coating includes wax, polysaccharide, polyethylene glycol and polylactic acid, thereby improving the aroma value of the aerosol and reducing the temperature of the aerosol, thereby improving the consumer experience.

[0092] As an achievable method, the isolation coating also includes a cooling agent. The cooling agent may be, but is not limited to, expanded graphite, porous silica gel, etc. In a preferred embodiment, the cooling agent is polylactic acid. The polylactic acid in this embodiment has good cooling performance and can also improve the hardness and stiffness of the paper material, which is convenient for making heat-not-burn cigarettes.

[0093] Illustratively, the isolation coating includes wax, polysaccharide, polyethylene glycol and polylactic acid, and the weight ratio of the wax, polysaccharide, polyethylene glycol and polylactic acid is (5-15):(1-25):(1-10):(0-25).

[0094] As an achievable manner, the cellulose paper includes at least one of broadleaf fiber, coniferous fiber and hemp pulp fiber. The cellulose paper of this embodiment has good performance, is environmentally friendly, and has easily available raw materials and low cost.

[0095] As an achievable manner, the polysaccharide includes at least one of pectin, starch, ethyl cellulose, carboxymethyl cellulose, agar, xylopentose, xylan and carrageenan. The polysaccharide raw materials of the embodiments of the present application are easily available and low in cost.

[0096] As an achievable aspect, the polyethylene glycol substance includes at least one of PEG-1000, PEG-1500, PEG-2000, PEG-2500 and PEG-4000.

[0097] As an achievable method, the wax includes at least one of beeswax, tree wax and palm wax. The waxes in this embodiment are all natural waxes or plant waxes, which are environmentally friendly, have readily available raw materials, are safe for human use, and can also improve the toughness of paper.

[0098] As an achievable method, the particle size D90 of the polylactic acid is less than or equal to 160um. The particle size of the polylactic acid in this embodiment is conducive to improving the dispersibility of the isolation coating and ensuring that the isolation coating is evenly dispersed; when the particle size of the polylactic acid is greater than 160um, the isolation coating is prone to accumulation, resulting in uneven dispersion.

[0099] In summary, the paper material of the embodiment of the present application, by coating the isolation coating on the surface of the cellulose paper, the isolation coating includes wax, polysaccharide, polyethylene glycol and polylactic acid, which can effectively isolate the paper smell generated by the cellulose paper during the heating process, improve the aroma value of the aerosol, and can also reduce the temperature of the aerosol, thereby improving the consumer experience;

[0100] The isolation coating also includes polylactic acid, which has a good cooling effect. At the same time, polylactic acid can also increase the hardness and stiffness of the paper material, so that the paper material improves the performance of heat-not-burn cigarettes and thus enhances the user experience.

[0101] In a third aspect, an embodiment of the present application provides a method for processing an inner-covered paper tube, using the paper tube processing equipment of the first aspect, comprising the following steps:

[0102] S1, forming the cellulose paper 210 into a tubular paper tube by a paper former 10;

[0103] S2. Inject the pre-prepared isolation coating slurry into the liquid guide tube 20. As the paper tube former 10 moves, the isolation coating slurry is coated on the inner wall surface of the paper tube. The isolation coating slurry includes water, ethanol, wax, polysaccharide, polyethylene glycol and polylactic acid.

[0104] In some other embodiments, such as Figure 4 and 5 As shown, the processing method of the inner-covered paper tube includes the following steps:

[0105] S10, adding an isolation base material to a mixture of water and ethanol, heating and stirring to mix evenly, to obtain an isolation coating slurry; wherein the isolation base material includes polysaccharide, wax, PEG and PLA.

[0106] It can be understood that water and ethanol, as dispersants and solvents, are conducive to dissolving and dispersing the isolation base material, so that the isolation base material is evenly dispersed to obtain a coating slurry.

[0107] Specifically, in actual use, water, ethanol, wax and polysaccharide are used in the following weight ratio: (50-90): (0-20): (5-15): (1-25).

[0108] The heating method may be any one, such as but not limited to a water bath, a constant temperature box, etc., and the stirring method may be a magnetic stirring, an oscillator, etc., and the embodiments of the present application do not make specific limitations on this.

[0109] S20, forming the cellulose paper 210 into a tubular paper tube by a paper former 10;

[0110] S30, uniformly coating the isolation coating slurry on the inner wall surface of the paper tube, and drying to a certain water content to obtain a paper tube.

[0111] The isolation coating slurry may be coated onto the inner wall surface of the paper tube by laminating or spraying, which is not specifically limited in the embodiments of the present application.

[0112] The preparation method of the embodiment of the present application is simple to operate and can reliably obtain paper coated with an isolation coating.

[0113] Further, the isolation base material is added to a mixture of water and ethanol, heated and stirred to mix evenly, and a process of obtaining an isolation coating slurry specifically includes:

[0114] After the water and ethanol mixture is heated to a predetermined temperature, the isolation coating is added to the water and ethanol mixture, and stirred at a first stirring pressure until there is no agglomeration, the pressure of the stirring container is released, and stirring is continued at a second stirring pressure until there are no bubbles, thereby obtaining an isolation coating slurry.

[0115] Among them, adding water and ethanol to a predetermined temperature first is conducive to uniform mixing of water and ethanol, and is also conducive to dissolving and dispersing the isolation base material.

[0116] In this embodiment, the isolation base material, water and ethanol are placed in a sealed stirring tank for reaction, and the pressure of the stirring tank is adjusted, which is beneficial to shorten the mixing time of the isolation base material and ensure that the isolation base material is mixed evenly. After releasing the pressure of the stirring container, stirring is continued, which is mainly used to remove the gas generated during the mixing process of the isolation coating slurry to avoid affecting the uniformity of the isolation coating slurry coating due to the presence of gas.

[0117] In a preferred embodiment, the heating method is an oil bath or a water bath, and the predetermined temperature is 40°C-90°C.

[0118] The heating method in this embodiment is simple, easy to implement, environmentally friendly, and the heating is uniform.

[0119] Among them, the predetermined temperature can be but is not limited to 40°C, 50°C, 60°C, 70°C, 80°C or 90°C. The predetermined temperature of this embodiment is conducive to the uniform dispersion of the isolation base material and will not cause a large amount of volatilization of water and ethanol. When the predetermined temperature is lower than 40°C, the homogenization time required for the isolation base material is longer and is not conducive to the dispersion of the dry material. When the predetermined temperature is higher than 90°C, the volatile intensity of the isolation liquid base liquid is large, resulting in a change in the formula ratio. Further, as a more preferred embodiment, the predetermined temperature is 45-75°C.

[0120] In some embodiments, the first stirring pressure is 0.3 atm-0.8 atm.

[0121] The first stirring pressure can be, but is not limited to, 0.3atm, 0.4atm, 0.5atm, 0.6atm, 0.7atm or 0.8atm; the first stirring pressure in this embodiment is conducive to shortening the mixing time, and is safe to use, ensuring that the isolation base material is mixed evenly; when the first stirring pressure is lower than 0.3atm, the liquid material is prone to explosive boiling, resulting in the liquid material being discharged from the vacuum valve, thereby causing material loss and damage to the vacuum equipment; when the first stirring pressure is higher than 0.8atm, the material activity intensity is low, resulting in a prolonged mixing time. In a preferred embodiment, the first stirring pressure is 0.5atm to 0.75atm.

[0122] In some embodiments, the second stirring pressure is 0.1 atm-0.25 atm.

[0123] The second stirring pressure of this embodiment is beneficial to the removal of gas in the isolation coating slurry, thereby improving the uniformity of the coating.

[0124] The second stirring pressure may be, but is not limited to, 0.1 atm, 0.12 atm, 0.15 atm, 0.17 atm, 0.2 atm or 0.25 atm. When the second stirring pressure is lower than 0.1 atm, the liquid material is prone to explosive boiling, causing the liquid material to be discharged from the vacuum valve, thereby causing material loss and damage to the vacuum equipment. When the second stirring pressure is higher than 0.25 atm, it is not conducive to the removal of gas in the liquid material, resulting in a decrease in the uniformity of the isolation coating during the laminating / coating process. In a preferred embodiment, the second stirring pressure is 0.15 atm to 0.2 atm.

[0125] In some embodiments, the insulating coating slurry is uniformly coated on the inner wall surface of the paper tube, and dried to a certain moisture content to obtain an inner-coated paper tube. The coating thickness of the insulating coating slurry is 0.1 mm-2 mm.

[0126] The coating thickness in this embodiment can effectively isolate the smell of paper impurities without affecting the heating of the aerosol-based matrix, which is beneficial to improving the consumer experience.

[0127] The coating thickness of the isolation coating slurry can be, but is not limited to, 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 1 mm, 1.2 mm or 1.5 mm; when the coating thickness of the isolation coating slurry is less than 0.1 mm, the resulting isolation coating is thinner, which is not conducive to blocking the impurities generated by the cellulose paper; when the coating thickness of the isolation coating slurry is greater than 2 mm, the resulting isolation coating is thicker, which will block heat transfer, is not conducive to heating the aerosol matrix, and reduces the consumer's experience. In a preferred embodiment, the thickness of the isolation liquid coating is 0.15 mm to 0.5 mm;

[0128] In some embodiments, the isolation coating slurry is uniformly coated on the inner wall surface of the paper tube, and dried to a certain moisture content to obtain an inner-coated paper tube, and the drying temperature is 60° C.-120° C.

[0129] The drying temperature of this embodiment is beneficial to preventing cracking of the isolation coating and is also beneficial to shortening the drying time.

[0130] The drying temperature may be, but is not limited to, 60°C, 70°C, 80°C, 90°C, 100°C, 110°C or 120°C; when the drying temperature is lower than 60°C, a longer drying time is required, which is not conducive to production; when the drying temperature is higher than 120°C, the isolation coating will crack, affecting the quality of the paper.

[0131] In a preferred embodiment, the drying temperature is 65°C to 100°C.

[0132] In some embodiments, the isolation coating slurry is uniformly coated on the inner wall surface of the paper tube and dried to a certain moisture content to obtain the inner coated paper tube, wherein the moisture content is 3%-10%.

[0133] Furthermore, in some embodiments, the cellulose paper has a grammage of 20 g / m 2 ~140g / m 2 The thickness of cellulose paper is 0.1mm~1.0mm, and the air permeability of cellulose paper is 100cu~30000cu.

[0134] In some embodiments, the weight of the paper is 30 g / m 2 ~220g / m 2The thickness of the paper is 0.15mm~1.5mm, and the air permeability of the paper is 50cu~10000cu.

[0135] The grammage, thickness and air permeability of the paper material of this embodiment ensure that the paper material has good performance and is not easy to break or chip, and does not affect the heating of the aerosol matrix, thereby helping to ensure that the cigarette has a good experience.

[0136] In summary, the processing method of the embodiment of the present application is simple to operate, and is conducive to ensuring that the obtained paper material has good performance and can improve the paper odor during the suction process.

[0137] In a fourth aspect, an embodiment of the present application provides a heat-not-burn cigarette, comprising the inner-covered paper tube of the second aspect. It is understandable that the heat-not-burn cigarette has all the characteristics and advantages of the aforementioned paper material, which will not be repeated here. In general, the heat-not-burn cigarette has a good smoking experience.

[0138] In some embodiments, the heat-not-burn cigarette further includes an aerosol matrix, a firmware and a filter device, and the aerosol matrix, the firmware and the filter device are filled in the inner cavity of the paper tube.

[0139] It should be noted that the firmware can generally be a cooling component, a sealing component, etc.; the heat-not-burn cigarette of this embodiment can block the paper smell generated by the cellulose paper during the heating process because the isolation coating separates the aerosol matrix and the cellulose paper, thereby giving consumers a good experience.

[0140] It can also be understood that other assembly methods of the heat-not-burn cigarette of the embodiment of the present application are the same as those in the prior art and will not be described in detail here.

[0141] In some embodiments, it also includes an aerosol matrix, a fixing device and a filtering device, wherein the aerosol matrix is ​​connected to the first end of the paper tube, and the fixing device and the filtering device are connected to the second end of the paper tube.

[0142] The structure of the heat-not-burn cigarette in this embodiment is conducive to improving the utilization rate of aerosol, preventing condensation, and thus improving the consumer experience.

[0143] The present invention is described below by means of specific examples. It should be noted that the following specific examples are only for illustrative purposes and do not limit the scope of the present invention in any way. In addition, unless otherwise specified, methods without specific conditions or steps are conventional methods, and the reagents and materials used can be obtained from commercial channels.

[0144] Example 1

[0145] Prepare an isolation coating by mixing water, ethanol, beeswax, pectin and PLA in a ratio of 25:25:10:25:15, place the water and ethanol solution in a 70°C water bath for heating, and after the temperature of the water and ethanol reaches the set temperature, add the beeswax, pectin and PLA into the water and ethanol, stir and heat, and operate the stirring container at a pressure of 0.6atm until the materials are mixed evenly and there is no agglomeration, then set the stirring container to 0.2atm pressure for exhaust, continue stirring for 20 minutes to obtain the isolation coating slurry, and load the isolation coating slurry into a liquid storage bin at 60°C for heat preservation for standby use;

[0146] The weight is 40g / m 2 The cellulose paper with a thickness of 0.1 mm, an air permeability of 15000 cu and a width of 14 mm is conveyed by a guide wheel to a paper tube former 10 for spiral forming. After forming, the laminating device evenly coats the isolation coating slurry conveyed by the liquid guide tube to the inner wall of the paper tube with a thickness of 0.15 mm, and dries it to a moisture content of less than 6%, thereby obtaining an inner-coated paper tube;

[0147] The low-temperature heating cigarette can be obtained by filling the interior of the prepared 8mm inner-covered paper tube with a 12mm sol matrix and a 7mm filter segment.

[0148] Example 2

[0149] The difference between this embodiment and embodiment 1 is that the water bath temperature in this embodiment is 40°C.

[0150] Example 3

[0151] The difference between this embodiment and embodiment 1 is that the water bath temperature in this embodiment is 90°C.

[0152] Example 4

[0153] The difference between this embodiment and embodiment 1 is that the first stirring pressure in this embodiment is 0.3 atm.

[0154] Example 5

[0155] The difference between this embodiment and embodiment 1 is that the first stirring pressure in this embodiment is 0.8 atm.

[0156] Example 6

[0157] The difference between this embodiment and embodiment 1 is that the second stirring pressure in this embodiment is 0.1 atm.

[0158] Example 7

[0159] The difference between this embodiment and embodiment 1 is that the coating thickness of the isolation coating in this embodiment is 0.1 mm.

[0160] Example 8

[0161] The difference between this embodiment and embodiment 1 is that the coating thickness of the isolation coating in this embodiment is 1 mm.

[0162] Example 9

[0163] The difference between this embodiment and embodiment 1 is that the coating thickness of the isolation coating in this embodiment is 2 mm.

[0164] Example 10

[0165] The difference between this embodiment and embodiment 1 is that the drying temperature in this embodiment is 60°C.

[0166] Embodiment 11

[0167] The difference between this embodiment and embodiment 1 is that the drying temperature in this embodiment is 120°C.

[0168] Example 12

[0169] The difference between this embodiment and embodiment 1 is that the water content in this embodiment is 3%.

[0170] Embodiment 13

[0171] The difference between this embodiment and embodiment 1 is that the water content in this embodiment is 10%.

[0172] Embodiment 14

[0173] This embodiment is different from embodiment 1 in that water, ethanol, beeswax, pectin, and PEG-1000 are prepared in a ratio of 25:25:10:25:15 to prepare the isolation coating.

[0174] Embodiment 15

[0175] This embodiment is different from embodiment 1 in that water, ethanol, tree wax, pectin, PEG-1500 and PLA are prepared in a ratio of 35:15:10:25:10:25 to prepare the isolation coating.

[0176] According to the sensory evaluation standard for tobacco and tobacco products YC / T138-1998, a smoking evaluation panel consisting of 15 smoking evaluation experts was organized to evaluate the cigarettes of Examples 1-15 and the control sample and test the draw resistance index, wherein the control sample is a heat-not-burn cigarette made of paper material without a barrier coating on cellulose paper. The evaluation and test results are listed in the following Table 1:

[0177] Table 1 Test results of Examples 1-15 and control samples

[0178]

[0179]

[0180] According to the results shown in Table 1:

[0181] Compared with the control samples, the heat-not-burn cigarettes of Examples 1-15 have significantly improved performance in terms of smoke volume, smoke smoothness, uniformity, aroma value, smoke temperature, etc., and the overall sensory quality is also significantly improved. This shows that the paper tubes of the embodiments of the present application can effectively improve the smoking experience of heat-not-burn cigarettes.

[0182] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A paper tube processing equipment, characterized in that: The paper tube processing equipment comprises: A paper tube former, on which cellulose paper is wound, and the cellulose paper moves along the length direction of the paper tube former to form the paper tube; A liquid conduit, a first end of which is connected to the isolation coating slurry; The paper tube former can move the paper tube along the length direction of the paper tube former so that the isolation coating slurry is coated on the inner wall surface of the paper tube.

2. The device according to claim 1, characterized in that The cellulose paper comprises at least two sheets, and the at least two sheets of cellulose paper are moved and wound along the length direction of the paper tube former to form the paper tube.

3. The device according to claim 1, characterized in that The second end of the liquid guiding tube extends toward the paper tube former and extends into the interior of the paper tube.

4. The device according to claim 1, characterized in that The liquid guiding tube is provided with at least one discharge port, and the at least one discharge port is located on the side wall of the liquid guiding tube close to the second end and is arranged along the circumference of the liquid guiding tube.

5. The device according to claim 4, characterized in that The at least one discharge port is extended from the side wall of the liquid guiding tube toward a direction away from the liquid guiding tube.

6. The device according to claim 1, characterized in that The paper tube processing equipment also includes: a laminator, which is located in the center of the paper tube and connected to the second end of the liquid guide tube. When the paper tube former drives the paper tube to move along the length direction of the laminator, the laminator extrude and shape the isolation coating slurry on the inner wall of the paper tube.

7. The device according to claim 6, characterized in that A cavity is defined between the film covering device, the liquid guiding tube and the inner wall of the paper tube, and the cavity includes a first section and a second section, and the width of the first section is greater than the width of the second section.

8. The device according to claim 6, characterized in that A avoidance zone is formed circumferentially on one side of the film covering device close to the catheter, and the avoidance zone is formed by the outer wall of the film covering device being inclined toward the center of the film covering device. The width of the film covering device gradually decreases in a direction extending from the end of the film covering device away from the catheter toward the end of the film covering device close to the catheter.

9. The device according to claim 6, characterized in that The paper tube processing equipment also includes: a drying bin, and the laminator is located in the drying bin.

10. The device according to claim 9, characterized in that A plurality of fixed wheels are arranged in the drying chamber, and the plurality of fixed wheels are spaced apart to form a fixed bracket, and the laminator is fixed on the fixed bracket.

11. The device according to any one of claims 1 to 10, characterized in that: The length direction of the paper tube former is parallel to the vertical direction, and the liquid guiding tube is arranged along the vertical direction.

12. The device according to any one of claims 1 to 10, characterized in that The paper tube processing equipment also includes: At least one paper support frame, one end of each of the cellulose papers is respectively wound on the paper support frame, and the other end of each of the cellulose papers is respectively wound on the paper tube former; At least one paper guide wheel is correspondingly arranged between each of the paper support frames and the paper tube former, and the cellulose paper contacts the paper guide wheel to adjust the tension of the cellulose paper between the paper support frame and the paper former to ensure that the cellulose paper remains flat.

13. The device according to any one of claims 1 to 10, characterized in that The paper tube processing equipment further includes: a liquid storage bin, the liquid storage bin is used to contain the isolation coating slurry, and the liquid guide pipe is connected to the liquid storage bin.

14. The device according to claim 13, characterized in that It also includes a liquid pump, which is installed between the liquid storage bin and the liquid conduit and is used to transport the isolation coating slurry in the liquid storage bin to the liquid conduit.

15. An inner-covered paper tube, characterized in that: It is obtained by processing through the paper tube processing equipment described in any one of claims 1-14.

16. A method for processing an inner-covered paper tube, characterized in that: Using the paper tube processing equipment according to any one of claims 1 to 14 comprises the following steps: Forming cellulose paper into a tubular paper tube by the paper former; The pre-prepared isolation coating slurry is injected into the liquid guide tube, and as the paper tube former moves, the isolation coating slurry is coated on the inner wall surface of the paper tube; wherein the isolation coating slurry includes water, ethanol, wax, polysaccharide, polyethylene glycol and polylactic acid.

17. A heat-not-burn cigarette, characterized in that: Including the paper tube as described in claim 15.

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