Coaxial cigarette bar, coaxial cigarette and manufacturing method of coaxial cigarette bar

Abstract

The invention relates to the technical field of tobaccos, in particular to a coaxial cigarette bar, a coaxial cigarette and a manufacturing method of the coaxial cigarette bar. The coaxial cigarette bar comprises an inner core and an outer core, wherein the inner core comprises a first content and a first wrapping piece wrapping the first content; a second content and a second wrapping piece wrapping the second content are arranged on the periphery of the inner core; the first wrapping piece and the second wrapping piece are both of a cylindrical structure and are coaxially arranged. Through ingenious design and optimization, the beneficial effects of avoiding the cigarette loose end quality problem, reducing the product cost and the like are also achieved, and the beneficial effects of reducing the equipment cost, greatly improving the efficiency, achieving perfuming and charging on an inner core wrapping material, remarkably improving the product quality and the like are further achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco, and in particular to a coaxial cigarette rod, a coaxial cigarette stick and a manufacturing method thereof. Background Art

[0002] In the field of tobacco technology, conventional technology is to wrap tobacco with cigarette paper and bond them with adhesive, then cut them into specified lengths, and then use filter rods, tipping paper and adhesive to make a complete cigarette.

[0003] Engineers in this field have made innovative attempts to reduce costs in response to the inherent defects of conventional technologies. That is, after tobacco is wrapped with cigarette paper and bonded with adhesive, a layer of tobacco and a layer of cigarette paper are wrapped on the outer layer in sequence, and the cigarette paper is bonded with adhesive to obtain a cigarette rod, which is then cut into a specified length, and finally a filter rod, tipping paper and adhesive are used to make a complete cigarette. For example, the rolling method and device of coaxial cigarettes, application number CN99124897. However, this technical solution requires the use of multiple sets of devices to achieve synchronization of the high-density areas of the inner and outer tobacco rods, thereby avoiding the quality problem of empty heads due to loose tobacco falling off at the ignition end of the tobacco rod. These devices include but are not limited to devices for increasing the density of tobacco, that is, cutting discs; detection devices for measuring the higher density areas of the inner and outer tobacco rods; correction devices for synchronizing the high-density areas of the inner and outer tobacco rods, etc. In addition, the inner and outer tobacco rods need to be wrapped with cigarette paper bonded with adhesive. Similar products have never appeared on the market.

[0004] Affected by the process characteristics, the above solution has the following technical defects or limitations:

[0005] 1. In order to avoid the problem of empty ends due to the loosening and falling of a large amount of tobacco at the ignition end of the cigarette rod, it is necessary to synchronize the high-density areas of the inner and outer tobacco rods in a specific area of ​​the cigarette rod. However, cigarette paper and its contents are elastic materials. When the cigarette manufacturing equipment is running at high speed, the relative positions of the high-density areas of the inner and outer tobacco rods cannot remain stable and will change from time to time. For this reason, it is necessary to set up a correction device and frequently intervene in the cigarette production process. Every time the correction device is intervened, the produced tobacco rods are waste and the production efficiency is extremely low. What's more, the production equipment is forced to shut down and start up frequently, which greatly reduces the normal service life of the equipment.

[0006] Second, in order to ensure the operation of the above-mentioned correction device, a tobacco density detection device must be configured to observe in real time the distribution of high-density tobacco areas in the inner and outer tobacco rods, which lengthens the cigarette manufacturing process and increases unnecessary equipment costs.

[0007] Third, in order to ensure that there is a high density area of ​​tobacco in the inner tobacco rod, the inner tobacco rod must be equipped with a device specifically used to increase the density of tobacco, namely, a cutting disc. This also leads to a longer cigarette making process and an increase in unnecessary equipment costs.

[0008] Fourth, the existing technology requires using adhesive to bond cigarette paper to make an inner tobacco rod, then wrapping the inner tobacco rod with tobacco and cigarette paper in turn, and bonding the cigarette paper with adhesive to make a cigarette rod, and then cutting the cigarette rod into a specified length, using tipping paper, filter rods, and adhesives to obtain a complete coaxial cigarette. However, in this process, the inner tobacco rod is not considered to be added with coatings that have a beneficial effect on improving the taste or avoiding quality problems, resulting in a gap in its technical capabilities.

[0009] 5. When the cigarette paper used as the wrapping material of a complete cigarette made using conventional technology encounters a weak acidic liquid, it will "bubble". The principle is that the acidic liquid reacts with the calcium carbonate in the cigarette paper to produce carbon dioxide in the cigarette paper layer, which is a product quality problem that must be eliminated. Therefore, on a complete cigarette made using conventional technology, it is impossible to use the technical means of coating the cigarette paper with a weak acid coating to achieve the technical effect of changing the pH value of the smoke when the cigarette is burned and significantly improving the taste. Summary of the invention

[0010] The purpose of the present invention is to address the defects of the current conventional cigarette and coaxial cigarette manufacturing technology, and on the basis of following the existing technical process rules, provide a coaxial cigarette rod, a coaxial cigarette and a manufacturing method thereof, so that the coaxial cigarette manufactured using this technology, on the basis of maximizing the use of existing equipment, not only does not need to use complex detection, synchronization, cutting disc and other devices for the inner core, but also greatly simplifies and optimizes the production process, and the production quality is stable and efficient. It also avoids the empty head quality problem caused by the loosening and falling of a large amount of tobacco shreds at the cutting position of the cigarette rod, and reduces the product cost. On the basis of this, an additional new beneficial effect is added, that is, the product quality and smoking taste can be improved by adding coatings or materials to the inner core.

[0011] In order to achieve the above-mentioned object of the present invention, the first aspect of the present application discloses a coaxial tobacco rod, the coaxial tobacco rod comprising: an inner core, the inner core comprising a first content and a first wrapping member wrapping the first content;

[0012] The outer periphery of the inner core is provided with a second content and a second wrapping piece wrapping the second content;

[0013] The first wrapping member and the second wrapping member are both columnar structures and are coaxially arranged.

[0014] Preferably, a shaping material layer is provided on at least one end region of the inner wall of the first wrapping member;

[0015] And / or, a shaping material layer is provided on at least one end region of the outer wall of the first wrapping member;

[0016] And / or, at least one end region of the surface of the first content is provided with a shaping material layer.

[0017] Preferably, the at least one end region refers to one or both ends of the coaxial tobacco rod. When the at least one end region refers to only one end of the coaxial tobacco rod, the end is the distal lip end of the coaxial tobacco rod.

[0018] The far lip end is the end away from the user's lips when the user inhales after the coaxial cigarette rod and filter rod are combined.

[0019] The lip-proximal end is the end close to the user's lips when the user inhales after the coaxial cigarette rod and filter rod are combined.

[0020] The coaxial cigarette rod has a distal lip end and a proximal lip end. Similarly, the first wrapper, the first content, the filter rod, and the cigarette also have a distal lip end and a proximal lip end.

[0021] Preferably, the first content is a first smoking material, fuel particles or a mixture of the first and second contents are a second smoking material;

[0022] The first wrapping member is paper or metal foil; the second wrapping member is paper or metal foil.

[0023] The fuel particles can be carbon particles or other solid fuel particles.

[0024] When the first content contains fuel particles, lower product costs can be achieved by partially replacing the smoke-generating material; when burned, it can provide higher heat than the smoke-generating material, allowing the aroma substances in the second content to be more fully released after heating, thereby improving product quality and smoking taste; in addition, it can reduce the production of harmful substances such as tar and nicotine.

[0025] Preferably, the quality of the first smoking material is lower than that of the second smoking material. The price of the first smoking material is lower than that of the second smoking material. This can reduce product costs without significantly affecting the smoking quality.

[0026] Preferably, a shaping material layer is provided on the non-end area of ​​the inner wall of the first wrapping piece, or no shaping material layer is provided;

[0027] And / or, a shaping material layer is provided in a non-end region on the outer wall of the first wrapping piece or no shaping material layer is provided;

[0028] And / or, a shaping material layer is provided in a non-end area of ​​the surface of the first content, or no shaping material layer is provided;

[0029] The thickness of the shaping material layer in the non-end region is equal to or smaller than the thickness of the shaping material layer in the end region.

[0030] The end area is the distal lip end or the proximal lip end. The non-end area is the middle area excluding the distal lip end and the proximal lip end.

[0031] Preferably, the types of the shaping material layers at different positions are the same or different. The different positions refer to the inner wall of the first package, the outer wall of a package, the surface of the first content, or the proximal lip end, distal lip end or non-end of the above items.

[0032] Preferably, the shaping material layer is selected from one or more layers of a shaping coating layer, an expanded plant fiber layer or a fragrance layer.

[0033] Preferably, the inner wall / outer wall of the first packaging piece or the lip-proximal region on the surface of the first content may also be provided with a shaping material layer or may not be provided with a shaping material layer.

[0034] The thickness of the shaping material layer in the proximal lip end region is equal to or less than the thickness of the shaping material layer in the distal lip end region.

[0035] In order to avoid the empty end or the falling of the smoking substance at the far lip end of the cigarette, a shaping material layer can be set in the far lip end area. Since there is abutment with the filter rod in the near lip end area, there is no need to worry about the empty end or the falling of the smoking substance after the cigarette is rolled into the cigarette, so the shaping material layer can be omitted in the near lip end area. Of course, since the near lip end area is the cutting position for the second cutting, in order to avoid the empty end or the falling of the smoking substance during cutting, a shaping material layer can also be set, but the thickness is less than the thickness of the shaping material layer in the far lip end area.

[0036] Since there will be no problem of empty ends or falling of smoky substances in the non-end region, a shaping material layer may not be provided. Of course, a shaping material layer may be provided in the non-end region to enhance the compactness of the tobacco shreds. The thickness of the shaping material layer may be less than the thickness of the shaping material layer in the end region, or less than the thickness of the shaping material layer in the far lip end region.

[0037] A second aspect of the present application provides a coaxial cigarette, comprising: the coaxial cigarette rod and filter rod described in the first aspect abutting against each other, a shaping material layer being provided at the distal lip end of the coaxial cigarette rod.

[0038] Of course, the proximal lip end of the coaxial tobacco rod, or the portion between the distal lip end and the proximal lip end, may also be provided with a shaping material layer.

[0039] The filter rod abuts against the proximal lip end of the coaxial tobacco rod.

[0040] The lip-proximal end of the coaxial cigarette rod is the end close to the lips of the user when the user draws inhalation after the coaxial cigarette rod is combined with the filter rod.

[0041] A third aspect of the present application provides a method for making a twice-long coaxial tobacco rod, the method comprising the following steps:

[0042] Step (1), making an inner core: adding a first content into an unfolded first wrapping piece, and before using the first wrapping piece to wrap the first content to make a long strip inner core, adding a shaping material to an inner wall of the first wrapping piece and / or at least a part of a surface of the first content to obtain a shaping material layer, and then wrapping the first content with the first wrapping piece to obtain an inner core;

[0043] Alternatively, the first content is added to the unfolded first wrapping piece, and then the first content is wrapped with the first wrapping piece to obtain an inner core, and then a shaping material is added to at least a portion of the outer wall of the first wrapping piece to obtain a shaping material layer on the outer wall of the first wrapping piece, and the whole obtained is the inner core;

[0044] Alternatively, a first content is added to the unfolded first wrapping member, and before the first wrapping member is used to wrap the first content to form a long strip inner core, a shaping material is added to at least a portion of the inner wall of the first wrapping member and / or the surface of the first content to obtain a shaping material layer, and then the first wrapping member is used to wrap the first content to obtain an inner core, and then a shaping material is added to at least a portion of the outer wall of the first wrapping member to obtain a shaping material layer on the outer wall of the first wrapping member, and the whole obtained is the inner core;

[0045] The added length of the shaping material covers the position to be cut for the first cutting of the long tobacco rod;

[0046] The types of the shaped material layers at different positions are the same or different;

[0047] Step (2), making a tobacco rod: wrapping the inner core prepared in step (1) with a second content, and then wrapping the second content with a second wrapping member and an adhesive to obtain a long tobacco rod;

[0048] Step (3), cutting: the long tobacco rod of step (2) is cut for the first time at the position to be cut, so as to obtain a coaxial tobacco rod of twice the length with at least two end regions provided with a shaping material layer.

[0049] Preferably, the working time of adding shaping materials and the interval time of adding shaping materials conform to the following mathematical model:

[0050] Formula 1: t n+1 -t n＝ T+Δt; T=length of added shaping material / Cυ;

[0051] Formula 2:

[0052]

[0053] Among them, T is the working time of adding shaping materials each time; t n is the starting time of each addition of shaping material; Δt is the interval between the starting times of two adjacent additions of shaping material; L is the length of the twice-long coaxial tobacco rod; Cυ is the linear speed of the long tobacco rod or inner core; n is the number of addition operations.

[0054] The relationship between the distance between the shaping material adding device and the long tobacco rod first cutting device, the length of the twice-long coaxial tobacco rod and the linear speed of the long tobacco rod is configured as follows:

[0055] When the shaping material adding device and the first cutting device work at the same frequency, the shaping material adding length sequentially and one by one covers each cutting position of the first cutting of the long tobacco rod.

[0056] In actual operation, according to the length of the twice-long coaxial tobacco rod, the distance between the shaping material adding device and the long tobacco rod first cutting device, and the production speed, the linear speed of the long tobacco rod is made to reach a specified value to ensure that the added length of the shaping material sequentially and one by one covers each cutting position of the long tobacco rod first cutting. It is preferred that the distance between the shaping material adding device and the long tobacco rod first cutting device is an integer multiple of the length of the twice-long coaxial tobacco rod, and the linear speed of the long tobacco rod is an integer multiple of the movement distance of the long tobacco rod per minute that is equal to the twice-long coaxial tobacco rod length. In this way, it is convenient to realize that the adding device and the first cutting device work stably at the same frequency, and the purpose of the shaping material adding length sequentially and one by one covers each cutting position of the long tobacco rod first cutting.

[0057] The fourth aspect of the present application provides a method for producing a coaxial tobacco rod, wherein the coaxial tobacco rod twice as long as that obtained in the third aspect is cut a second time at the center to obtain a coaxial tobacco rod.

[0058] The fifth aspect of the present application provides a method for making a coaxial cigarette, which comprises: cutting the twice-long coaxial cigarette rod obtained in the third aspect for a second time at the center position, adding a twice-long filter rod in the middle, and rolling the cut twice-long coaxial cigarette rod and the twice-long filter rod with double-long tipping paper and adhesive to obtain a twice-long coaxial cigarette; then cutting the twice-long coaxial cigarette rod for a third time in the middle to obtain two complete coaxial cigarette rods, wherein the coaxial cigarette rod comprises a once-long coaxial cigarette rod, a once-long filter rod, and a once-long tipping paper.

[0059] The method of adding the shaping material includes but is not limited to intermittent or continuous or variable application amount, among which the method of increasing the application amount as needed before and after the possible cutting position when the long tobacco rod is cut for the first time is preferred.

[0060] Another object of the present invention is to optimize or reduce process conditions by adding shaping materials.

[0061] Preferably, the shaping material is selected from one or more of tobacco curing and shaping agent, puffed plant fiber, puffing agent or flavor liquid. The tobacco curing and shaping agent is preferably an acidic tobacco curing and shaping agent. The flavor liquid is preferably an acidic flavor liquid. The shaping coating layer is obtained after the tobacco curing and shaping agent is formed.

[0062] When puffed plant fiber is selected as the shaping material, plant fiber soaked in liquid carbon dioxide can be used, and the expansion of plant fiber cells caused by the evaporation of carbon dioxide at room temperature can be used to produce a puffing effect, making the tobacco shreds tighter, avoiding the quality problem of empty ends caused by loose tobacco shreds falling off at the cutting position of long tobacco rods. When puffed plant fiber is selected as the shaping material, the puffed plant fiber can only be added to the inner wall of the first package or the surface of the first content before the inner core is formed.

[0063] When a swelling agent is selected as the shaping material, the swelling agent is preferably added to the inner wall of the first package or the surface of the first content before the inner core is formed. The swelling agent makes the tobacco shreds puffed, making the tobacco shreds more compact, and avoiding the quality problem of the tobacco shreds loosening and falling off at the cutting position of the long tobacco rod, resulting in the occurrence of empty ends. The swelling agent can be sodium bicarbonate or dry ice particles or similar substances that can make the tobacco shreds puffed.

[0064] When the shaping material is a tobacco curing setting agent, such as modified latex, the tobacco is cured and the processing strength is improved, thereby avoiding the quality problem of the tobacco loosening and falling off at the tobacco rod cutting position and causing the empty end. When the shaping material is a tobacco curing setting agent, the tobacco curing setting agent is preferably added to the inner wall of the first wrapper or the surface of the first content before the inner core is formed.

[0065] When the shaping material is selected as the flavor liquid, the moisture content of the tobacco can be increased to improve the toughness of the tobacco, thus avoiding the phenomenon of empty ends due to loose tobacco falling off at the cutting position of the tobacco rod. Therefore, water can also be selected as the shaping material. The flavor liquid certainly has the additional functions of providing aroma and coordinating smoke.

[0066] The fragrance liquid and water can be directly added to the surface of the first content, or added to the inner wall or outer wall of the first package so as to penetrate into the surface of the first content to play a role.

[0067] In summary, the functions of shaping materials are: 1. By including but not limited to adding tobacco curing and shaping agents (such as latex) or partially increasing the moisture content of tobacco, or swelling agents, etc., to avoid the phenomenon of empty ends due to loosening and falling of tobacco at the cutting position of the tobacco rod; 2. Increase the beneficial effect: the pH value of the acidic tobacco curing and shaping agent or the acidic flavoring liquid is weakly acidic, which can change the pH value of the smoke when the cigarette is burned, enrich the aroma, and greatly improve the taste. In addition, when the tobacco curing and shaping agent or the acidic flavoring is added to the inner wall or outer wall of the first wrapping member, when the first wrapping member is cigarette paper, the shielding and covering effect of the second content is used to make the inner core cigarette paper "bubbling" due to the weakly acidic liquid, which does not need to be paid attention to.

[0068] The main functions of the first content are: 1. It can provide heat when the cigarette is burned and smoked; 2. It can replace high-grade tobacco to achieve the purpose of reducing costs; 3. When the first content contains carbon particles, it can reduce the production of harmful substances such as tar and nicotine. The first content can be low-grade tobacco, or low-grade tobacco mixed with carbon particles, or solid fuel with high combustion calorific value and no taste or odor. Among them, low-grade tobacco or carbon particles are preferred.

[0069] The second content mainly provides high-quality eating and smoking taste during the smoking process of the cigarette. The second content preferably includes, but is not limited to, high-grade tobacco of flue-cured tobacco, cigar tobacco, burley tobacco, air-cured tobacco, sun-cured tobacco and the like.

[0070] The main function of the wrapping piece is to wrap the first content or the second content, and its material can be paper or metal, such as cigarette paper, aluminum foil, etc. The first wrapping piece is preferably cheap ordinary wood pulp cigarette paper or aluminum foil. The second wrapping piece is preferably full hemp cigarette paper.

[0071] Compared with the prior art, the present invention reduces or optimizes the existing process conditions, and after meeting the basic functional requirements, it also produces more beneficial results, as follows:

[0072] (1) The present application adds shaping materials before and after the tobacco rod cutting position to prevent the tobacco in the inner core tobacco rod from loosening and falling off during tobacco rod cutting, thereby preventing the occurrence of empty ends. The present application realizes that in the process of making the inner core, it is no longer necessary to use a device for increasing the density of tobacco, i.e., a cutting disc, thereby greatly optimizing and simplifying the existing process conditions, significantly reducing equipment costs, and reducing production costs due to shortening the process flow.

[0073] (2) With the solution of the present application, the inner core or inner tobacco rod does not need to increase the tobacco density in a local area as in the prior art, so there is no need to detect the tobacco density, and the tobacco density detection device can be completely eliminated. This greatly optimizes and simplifies the existing process conditions, significantly reduces equipment costs and improves production efficiency.

[0074] (3) By using this method, the inner core or inner tobacco rod does not need to increase the density of tobacco in a local area as in the prior art, so there is no need to synchronize the high-density tobacco area between the inner core or inner tobacco rod and the second content or outer tobacco rod, and the high-density tobacco area correction device can be completely eliminated, so that the existing process conditions are greatly optimized and simplified, and the process condition design is more in line with the objective fact that the cigarette paper and its contents are elastic materials, and the relative positions of the high-density areas of the inner and outer tobacco rods cannot be maintained unchanged and change from time to time. This brings about beneficial effects: significantly reducing equipment costs, extending equipment service life due to the lack of frequent shutdown and startup, and improving production efficiency due to shortening the process flow, etc.

[0075] (4) Improving the flavor of cigarettes. Using this method, the added shaping materials can achieve very beneficial effects on improving product quality in multiple directions. For example, adding weak acid flavoring liquid or tobacco curing shaping agent, such as citric acid, tomato extract, acid latex, etc., which is used to change the pH value of smoke during smoking, enrich the aroma, and improve the taste of smoke, can completely ignore the "bubbling" quality problem of cigarette paper caused by the reaction between the acid flavoring liquid and the calcium carbonate in the cigarette paper, thereby solving the industry problem that weak acidic substances cannot be added to cigarette paper to improve the taste of smoke.

[0076] (5) The solution of the present application can significantly reduce product costs. Using this method, the first content can be low-grade tobacco, or low-grade tobacco mixed with carbon particles, or solid fuel with high combustion calorific value and no taste or odor. While reducing the production of harmful substances such as tar, it also reduces the cost of cigarette products, making the cigarette products produced using the technology of the present invention have stronger market competitiveness and commodity profitability. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0078] Figure 1 is a cross-sectional view of the coaxial cigarette structure of the present application;

[0079] Figure 2 This is a schematic diagram of the first coaxial long cigarette rod rolling process of the present application;

[0080] Figure 3 This is a schematic diagram of the second coaxial long tobacco rod rolling process of the present application;

[0081] Figure 4 This is the relationship between the amount of shaping material added and time in this application;

[0082] Figure 5 It is a schematic diagram of the production steps from long cigarette rods to coaxial cigarette sticks in this application.

[0083] In the figure, 1, a filter rod of one length; 1-1, a filter rod of two lengths; 2, a tipping paper of one length; 2-2, a tipping paper of two lengths; 3, a second package; 4, a second content; 5, a first package; 6, a first content; 7, a adding device; 8, a shaping material; 9, a coaxial cigarette rod of two lengths; 9-1, a coaxial cigarette rod of one length; 11, a long cigarette rod; 12, a first cutting device (cutter); 13, a coaxial cigarette stick of two lengths; 14, a complete coaxial cigarette stick; 15, a second cutting device (cutter); 16, a third cutting device (cutter). DETAILED DESCRIPTION

[0084] In order to enable those skilled in the art to better understand and implement the patent of the present invention, the following specific implementation methods are provided here.

[0085] Example 1

[0086] 1. Making the inner core: Using 25g of 60Cu wood pulp cigarette paper as the first wrapping member 5 and artificial tobacco sheets mixed with activated carbon as the first content 6, before using the first wrapping member 5 to wrap the first content 6 to make a long strip inner core, the interval time calculated according to Formula 1 and Formula 2 is as follows: Figure 4 As shown, a modified latex with a pH value of 6.5 is added to the surface of the first content 6 in the 3 mm area before and after the cutting position, and the addition amount P2 = 25 mg / mm. Figure 3 As shown. The amount of the first content 6 added to other areas of the surface P1 = 5 mg / mm, which can be added using another adding device. The circumference of the long strip inner core is 19 mm.

[0087] The following describes the characteristics of modified latex addition with P2 addition amount:

[0088] In order to meet the production speed requirement of 4000 coaxial cigarettes / min, the inner core linear speed is 216m / min, and the length L of 2 times the cigarette is 108mm. Formula 1 and Formula 2 are used to calculate that the P2 adding working time T is 0.0017 seconds, and the interval time Δt between the midpoints of two adjacent P2 adding working times is 0.03 seconds. The added length is 6mm. T=6mm / (216m / min)=0.0017sΔt=108mm / (216m / min)=0.03s. The distance between the P2 adding device 7 and the first cutting position 12 is 540mm, which is 10 times the length of the cigarette rod, that is, 5 times the length of 2 times the cigarette rod. The inner core linear speed, which is also the linear speed of the long cigarette rod, has a movement distance per minute equal to 2000 times the length of 2 times the cigarette rod. In this way, it is convenient to realize that the adding device 7 and the first cutting device 12 work stably at the same frequency.

[0089] 2. Making a long tobacco rod: Use 30g 60Cu wood pulp cigarette paper as the wrapping material 3, use high-quality aromatic tobacco formula tobacco as the second content 4, wrap the inner core with the second content 4, and then wrap it with the wrapping material 3 and the adhesive. The circumference of the obtained long tobacco rod 11 is 24.3mm. Figure 3 shown.

[0090] 3. Cut the long cigarette rod 11 produced in the previous step into 108mm double-length coaxial cigarette rods 9 using the first cutting knife 12 at the cutting position, and then cut the double-length coaxial cigarette rod 9 in the middle using the second cutting knife 15, add a 60mm double-length filter rod 1-1 in the middle and roll it with 72mm double-length tipping paper 2-2 and adhesive to obtain a double-length coaxial cigarette stick 13; then use the third cutting knife 16 to cut in the middle of the double-length coaxial cigarette stick 13 to obtain two complete coaxial cigarette sticks 14, which include a coaxial cigarette rod 9-1 with a length of 54mm, a filter rod 1 with a length of 30mm, and a 36mm double-length tipping paper 2. Figure 1 , 5 shown.

[0091] Example 2

[0092] 1. Making the inner core: Using 24g 70Cu wood pulp cigarette paper as the wrapping material 5 and low-grade flue-cured tobacco as the first content 6, after the wrapping material 5 is used to wrap the first content 6 to make a long inner core, the interval time calculated according to Formula 1 and Formula 2 is as follows: Figure 4 As shown, a tomato extract with a pH value of 6 is added to the outer wall of the first package in the area 2.5 mm before and after the cutting position, and the added amount P2 = 50 mg / mm. Figure 2 As shown. The amount of addition P1 in other areas of the outer wall of the first package is 15 mg / mm, and another adding device can be used here for addition. The circumference of the long strip inner core is 17 mm.

[0093] The following describes the addition characteristics of the addition amount P2:

[0094] In order to meet the production speed requirement of 4000 coaxial cigarettes / min, the inner core linear speed is 240m / min, and the length L of 2 times the cigarette is 120mm. Formula 1 and Formula 2 are used to calculate that the adding working time T is 0.00125 seconds, and the interval time Δt between the midpoints of two adjacent adding working times is 0.03 seconds. T=5mm / (240m / min)=0.00125s, Δt=120mm / (240m / min)=0.03s. The distance between the P2 adding device 7 and the first cutting position 12 is 600mm, which is 10 times the length of the cigarette rod, that is, 5 times the length of 2 times the cigarette rod. The inner core linear speed is also the linear speed of the long cigarette rod, and its movement distance per minute is equal to 2000 times the length of 2 times the cigarette rod. In this way, it is convenient to realize that the adding device 7 and the first cutting device 12 work stably at the same frequency.

[0095] 2. Making tobacco rods: Use 32g 60Cu hemp pulp cigarette paper as wrapping material 3, use high-quality flue-cured tobacco as second content 4, wrap the inner core with second content 4, and then wrap with wrapping material 3 and adhesive, and the circumference of the obtained long tobacco rod 11 is 23mm. Figure 2 shown.

[0096] 3. Cut the long cigarette rod 11 produced in the previous step into 120mm double-length coaxial cigarette rods 9 at the cutting position using the first cutting knife 12, and then cut the double-length coaxial cigarette rod 9 in the middle using the second cutting knife 15, add a 60mm double-length filter rod 1-1 in the middle, and roll it with 74mm double-length tipping paper 2-2 and adhesive to obtain a double-length coaxial cigarette stick 13; then use the third cutting knife 16 to cut in the middle of the double-length coaxial cigarette stick 13 to obtain two complete coaxial cigarette sticks 14, which include a coaxial cigarette rod 9-1 with a length of 60mm, a filter rod 1 with a length of 30mm, and a 37mm double-length tipping paper 2. Figure 1 , 5 shown.

[0097] Example 3

[0098] 1. Making the inner core: Using 28g50Cu wood pulp cigarette paper as the wrapping material 5, using a mixed formula of low-grade flue-cured tobacco, sun-cured tobacco, and air-cured tobacco as the first content 6. Before using the wrapping material 5 to wrap the first content 6 to make a long inner core, the interval time calculated according to Formula 1 and Formula 2 is as follows: Figure 4 As shown, hemp pulp fibers soaked in liquid carbon dioxide are added to the surface of the first content 6 in the 4 mm area before and after the cutting position, and the addition amount P2 = 15 mg / mm, as shown in FIG. Figure 3As shown. The amount of addition P1 in other areas of the surface of the first content 6 is 0 mg / mm, and another adding device can be used for adding here. The circumference of the long strip inner core is 15 mm.

[0099] The following describes the addition characteristics of the addition amount P2:

[0100] In order to meet the production speed requirement of 4000 coaxial cigarettes / min, the inner core linear speed is 252m / min, and the length L of 2 times the cigarette is 126mm. Formula 1 and Formula 2 are used to calculate that the duration T of each addition operation is 0.0019 seconds, and the interval Δt between the midpoints of two adjacent addition operations is 0.03 seconds. T=8mm / (252m / min)=0.0019s, Δt=126mm / (252m / min)=0.03s. The distance between the P2 adding device 7 and the first cutting position 12 is 630mm, which is 10 times the length of the cigarette rod, that is, 5 times the length of 2 times the cigarette rod. The inner core linear speed is also the linear speed of the long cigarette rod, and its movement distance per minute is equal to 2000 times the length of 2 times the cigarette rod. In this way, it is convenient to realize that the adding device 7 and the first cutting device 12 work stably at the same frequency.

[0101] 2. Making tobacco rods: 30g 60Cu wood pulp cigarette paper is used as the wrapping material 3, and a mixed formula of high-grade flue-cured tobacco, burley tobacco, sun-cured tobacco and air-cured tobacco is used as the second content 4. After the inner core is wrapped with the second content 4, it is then wrapped with the wrapping material 3 and an adhesive. The circumference of the obtained long tobacco rod 11 is 22mm. Figure 3 shown.

[0102] 3. Cut the long cigarette rod 11 produced in the previous step into 126mm double-length coaxial cigarette rods 9 using the first cutting knife 12 at the cutting position, and then cut the double-length coaxial cigarette rod 9 in the middle using the second cutting knife 15, add a 50mm double-length filter rod 1-1 in the middle and roll it with 64mm double-length tipping paper 2-2 and adhesive to obtain a double-length coaxial cigarette stick 13; then use the third cutting knife 16 to cut in the middle of the double-length coaxial cigarette stick 13 to obtain two complete coaxial cigarette sticks 14, which include a coaxial cigarette rod 9-1 with a length of 63mm, a filter rod 1 with a length of 25mm, and a 32mm double-length tipping paper 2. Figure 1 , 5 shown.

[0103] Comparative Example 1

[0104] In the "Coaxial cigarette rolling method and device", application number CN99124897, the method is used to prepare coaxial cigarettes:

[0105] 1. Making inner tobacco strips: Use 25g 60Cu wood pulp cigarette paper as the wrapping material 5, and use low-grade flue-cured tobacco as the first content 6. First, use a cutting disc to make a 6mm long tobacco high-density area appear at every 51mm interval of the first content 6, that is, there are 3mm tobacco high-density areas before and after the cutting position, and the normal density of tobacco is 200kg / m 3 , the high density of tobacco is 350kg / m 3 Then, adhesive is applied to the overlap of the wrapping material 5 and the first content 6 is wrapped to form a long inner tobacco strip, and the circumference of the long inner tobacco strip is 19 mm.

[0106] 2. Making the outer tobacco strip: using 30g 60Cu wood pulp cigarette paper as the wrapping material 3, and using high-quality flue-cured tobacco formula tobacco as the second content 4. After detecting and tracking the high-density areas of the inner and outer tobacco strips, and ensuring the synchronization of the high-density areas of the inner and outer tobacco strips through the calibration device, the inner tobacco strip is wrapped with the second content 4, wherein the second content 4 is made to have a 6mm long tobacco strip high-density area at every 51mm interval, that is, there is a 3mm tobacco strip high-density area before and after the cutting position. The normal density of the tobacco strip of the second content 4 is 200kg / m 3 , the high density of tobacco is 350kg / m 3 The tobacco rod 11 is then wrapped with a wrapping material 3 and an adhesive, and the circumference of the obtained long tobacco rod 11 is 24.3 mm.

[0107] 3. Cut the long cigarette rod 11 produced in the previous step into 108mm double-length coaxial cigarette rods 9 using the first cutting knife 12 at the cutting position, and then cut the double-length coaxial cigarette rod 9 in the middle using the second cutting knife 15, add a 60mm double-length filter rod 1-1 in the middle and roll it with 72mm double-length tipping paper 2-2 and adhesive to obtain a double-length coaxial cigarette stick 13; then use the third cutting knife 16 to cut in the middle of the double-length coaxial cigarette stick 13 to obtain two complete coaxial cigarette sticks 14, which include a coaxial cigarette rod 9-1 with a length of 54mm, a filter rod 1 with a length of 30mm, and a 36mm double-length tipping paper 2. Figure 1 , 5 shown.

[0108] Comparative Example 2

[0109] Make an ordinary non-coaxial cigarette using conventional technology:

[0110] 1. Making tobacco strips: Use 30g 60Cu wood pulp cigarette paper as the wrapping material and high-quality flue-cured tobacco as the content. First, use a cutting disc to make a 6mm long tobacco high-density area appear at every 51mm interval, that is, there is a 3mm tobacco high-density area before and after the cutting position. The normal density of tobacco is 200kg / m 3 , the high density of tobacco is 350kg / m 3 Then, an adhesive is applied to the overlap of the wrapping material and the contents are wrapped to form a long tobacco strip, the circumference of the long tobacco strip is 24.3 mm.

[0111] 2. Cut the tobacco rod made in the previous step into 54mm small sections, and use a 30mm filter rod, 36mm tipping paper and adhesive to make a complete ordinary cigarette.

[0112]

Application Conclusion

[0113]

[0114]

[0115] The sensory evaluation of smoking in the above table is carried out according to the national standard GB5606.4-2005 “Cigarettes Part 4: Sensory Technical Requirements”.

[0116] The formula for calculating equipment production efficiency is: number of qualified products / total number of products.

[0117] The sensory evaluation of Example 1 is better than that of Comparative Example 2, the sensory quality is excellent, and the cost of cigarettes is greatly reduced; compared with Comparative Example 1, the production equipment is cheap and the equipment production efficiency is greatly improved. The product has strong market competitiveness and profitability, creates new taste and visual experience, and has broad application prospects.

[0118] The sensory evaluation of Example 2 is much better than that of Comparative Example 2, the sensory quality is very excellent, and the cost of cigarettes is greatly reduced; compared with Comparative Example 1, the production equipment is cheap and the equipment production efficiency is greatly improved. The product has strong market competitiveness and profitability, creates new taste and visual experience, and has a very broad application prospect.

[0119] The sensory evaluation of Example 3 is much better than that of Comparative Example 2, the sensory quality is very excellent, and the cost of cigarettes is greatly reduced; compared with Comparative Example 1, the production equipment is cheap and the equipment production efficiency is greatly improved. The product has strong market competitiveness and profitability, creates new taste and visual experience, and has a very broad application prospect.

[0120] The sensory evaluation of comparative example 1 is better than that of comparative example 2, and the sensory quality is excellent, but the cost of cigarettes remains high due to the low production efficiency of the equipment; the production equipment is expensive; there are too many defective and waste products. The market competitiveness and profitability of the product are weak, and the application prospects are very bleak.

[0121] Comparative Example 2 is a common conventional product under the existing technology. The production equipment is inexpensive due to its mature technology and has high equipment production efficiency. However, there is little room for improving the sensory quality of the product, and the cost of cigarettes is high and difficult to optimize or reduce. With the emergence of iterative products, it will be gradually replaced or substituted.

[0122] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

[0123] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A coaxial tobacco rod, characterized in that: The coaxial tobacco rod comprises: an inner core, the inner core comprising a first content and a first wrapping member wrapping the first content; The outer periphery of the inner core is provided with a second content and a second wrapping piece wrapping the second content; The first wrapping member and the second wrapping member are both columnar structures and are coaxially arranged.

2. The coaxial tobacco rod according to claim 1, characterized in that: A shaping material layer is provided on at least one end region of the inner wall of the first wrapping member; And / or, a shaping material layer is provided on at least one end region of the outer wall of the first wrapping member; And / or, at least one end region of the surface of the first content is provided with a shaping material layer.

3. The coaxial tobacco rod according to claim 1, characterized in that: The first content is a first smoking material, fuel particles or a mixture of the first and second contents are a second smoking material; The first wrapping member is paper or metal foil; the second wrapping member is paper or metal foil.

4. The coaxial tobacco rod according to claim 2, characterized in that: A shaping material layer is provided on the non-end area of ​​the inner wall of the first wrapping piece, or no shaping material layer is provided; And / or, a shaping material layer is provided in a non-end region on the outer wall of the first wrapping piece or no shaping material layer is provided; And / or, the non-end area of ​​the surface of the first content is provided with a shaping material layer or is not provided with a shaping material layer; The thickness of the shaping material layer in the non-end region is equal to or smaller than the thickness of the shaping material layer in the end region.

5. The coaxial tobacco rod according to claims 2-4, characterized in that: The types of the shaped material layers at different positions are the same or different; The shaping material layer is selected from one or more layers of a shaping coating layer, a puffed plant fiber layer, a puffing agent layer or a fragrance layer.

6. A coaxial cigarette, characterized in that: The coaxial cigarette comprises: the coaxial cigarette rod and filter rod as claimed in claims 1 to 4 abutting against each other, and a shaping material layer is arranged at the distal lip end of the coaxial cigarette rod.

7. A method for making a twice-long coaxial tobacco rod, characterized in that: The production method comprises the following steps: Step (1), making the inner core: Adding a first content into the unfolded first wrapping piece, before using the first wrapping piece to wrap the first content to form a long strip inner core, adding a shaping material to the inner wall of the first wrapping piece and / or at least a part of the surface of the first content to obtain a shaping material layer, and then wrapping the first content with the first wrapping piece to obtain an inner core; Alternatively, a first content is added to the unfolded first wrapping member, and then the first content is wrapped with the first wrapping member to obtain an inner core, and then a shaping material is added to at least a portion of the outer wall of the first wrapping member to obtain a shaping material layer on the outer wall of the first wrapping member, and the whole obtained is the inner core; Alternatively, a first content is added to the unfolded first wrapping member, and before the first wrapping member is used to wrap the first content to form a long strip inner core, a shaping material is added to at least a portion of the inner wall of the first wrapping member and / or the surface of the first content to obtain a shaping material layer, and then the first wrapping member is used to wrap the first content to obtain an inner core, and then a shaping material is added to at least a portion of the outer wall of the first wrapping member to obtain a shaping material layer on the outer wall of the first wrapping member, and the whole obtained is the inner core; The added length of the shaping material covers the position to be cut for the first cutting of the long tobacco rod; The types of the shaped material layers at different positions are the same or different; Step (2), making a tobacco rod: after wrapping the inner core prepared in step (1) with the second content, wrapping the second content with a second wrapping member and an adhesive to obtain the long tobacco rod; Step (3), cutting: the long tobacco rod of step (2) is cut for the first time at the position to be cut, so as to obtain a coaxial tobacco rod of twice the length with at least two end regions provided with a shaping material layer.

8. The method for making a double-length coaxial tobacco rod according to claim 7, characterized in that: The relationship between the distance between the shaping material adding device and the long tobacco rod first cutting device, the length of the twice-long coaxial tobacco rod and the linear speed of the long tobacco rod is configured as follows: When the shaping material adding device and the first cutting device work at the same frequency, the shaping material adding length sequentially and one by one covers each cutting position of the first cutting of the long tobacco rod.

9. The method for making a double-length coaxial tobacco rod according to claim 8, characterized in that: The distance between the shaping material adding device and the long tobacco rod first cutting device is an integer multiple of twice the length of the long coaxial tobacco rod; The linear speed of the long tobacco rod is configured such that the distance the long tobacco rod moves per minute is equal to an integer multiple of twice the length of the long coaxial tobacco rod.

10. A method for making a coaxial cigarette rod, characterized in that: The coaxial tobacco rod having twice the length obtained in claim 7 is cut for the second time at the center position to obtain a coaxial tobacco rod.

11. A method for making a coaxial cigarette, characterized in that: The manufacturing method comprises: cutting the twice-long coaxial tobacco rod obtained in claim 8 for the second time at the center, adding a twice-long filter rod in the middle, and rolling the twice-long coaxial tobacco rod after the second cutting and the twice-long filter rod with double-long tipping paper and adhesive to obtain a twice-long coaxial cigarette; Then, a third cutting is performed in the middle of the twice-long coaxial cigarette to obtain two complete coaxial cigarettes, wherein the coaxial cigarette comprises a once-long coaxial cigarette rod, a once-long filter rod and a once-long tipping paper.

Images