CN110652028A - Dry-process reconstituted tobacco, and dry-process reconstituted tobacco production method and equipment - Google Patents
Dry-process reconstituted tobacco, and dry-process reconstituted tobacco production method and equipment Download PDFInfo
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- CN110652028A CN110652028A CN201810699318.1A CN201810699318A CN110652028A CN 110652028 A CN110652028 A CN 110652028A CN 201810699318 A CN201810699318 A CN 201810699318A CN 110652028 A CN110652028 A CN 110652028A
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/01—Making cigarettes for simulated smoking devices
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Abstract
A dry-process reconstituted tobacco, a dry-process reconstituted tobacco production method and equipment belong to the field of reconstituted tobacco production, and the dry-process reconstituted tobacco production method comprises the following steps: crushing and defibering plant fibers under the anhydrous condition to prepare a substrate; mixing the pulverized tobacco powder with water, adhesive, humectant and essence for tobacco to obtain coating liquid; and loading the coating liquid on the substrate, and drying to prepare the dry reconstituted tobacco. The dry method reconstituted tobacco production equipment comprises: the fiber decomposition device is used for crushing and defibering the plant fibers; the substrate forming device is used for manufacturing the broken and fluffed plant fibers into a substrate; the spraying device is used for spraying the coating liquid on the substrate; and the drying device is used for drying the substrate loaded with the coating liquid, so that the dry reconstituted tobacco is obtained. The dry reconstituted tobacco is prepared by the production method or the equipment. The dry reconstituted tobacco and the production method and equipment thereof have the characteristics of simple process flow, low water consumption and high utilization rate of raw materials.
Description
Technical Field
The invention relates to the field of reconstituted tobacco production, in particular to dry reconstituted tobacco, and a method and equipment for producing the dry reconstituted tobacco.
Background
The reconstituted tobacco which is an important component of the tobacco raw material of the traditional cigarette product is more and more widely applied in the cigarette industry, breaks through a simple waste utilization mode, plays an important role in improving the combustibility of cigarettes, improving the internal quality of cigarette products, reducing harmful ingredients in the cigarettes, reducing the content of tar and nicotine and the like, and is more and more widely applied to the tobacco filler range, such as cigarette filters, outer cigarette wrappers of cigars and the like. With the increasingly severe international cigarette control situation, tobacco product consumers are more concerned about their health, so that tobacco science and technology workers are gradually dedicated to the development of low-harm tobacco products, and cigarettes which are not burnt are heated and produced due to transportation. The reconstituted tobacco is used as the core material of the cigarette without burning during heating, so that the function of the reconstituted tobacco is expanded once again, and a new path and assistance are provided for the development of the technology of the cigarette without burning during heating.
However, the existing reconstituted tobacco production generally has problems in one or more aspects of water consumption, environmental pollution, comprehensive utilization rate of tobacco raw materials, processing adaptability and the like.
Disclosure of Invention
The invention aims to provide dry-process reconstituted tobacco, a dry-process reconstituted tobacco production method and equipment, which have the characteristics of basically no water consumption, environmental friendliness, high comprehensive utilization rate of tobacco raw materials and strong processing adaptability.
The technical solution of the invention comprises:
a dry method reconstituted tobacco production method comprises the following steps:
crushing and defibering plant fibers under the anhydrous condition to prepare a substrate;
mixing tobacco powder with water, adhesive, smoking agent, tobacco essence and perfume, and humectant to obtain coating liquid;
and loading the coating liquid on the substrate, and drying to prepare the dry reconstituted tobacco.
Optionally, the plant fiber comprises one or more of hemp pulp, bamboo pulp, and wood pulp.
Alternatively, the tobacco powder is obtained by pulverizing tobacco raw material under anhydrous conditions.
Optionally, the smoking agent comprises glycerol, propylene glycol and sorbitol, and the tobacco flavor comprises burley tobacco absolute, cocoa extract, tobacco leaf extract and aromatic tobacco extract.
Optionally, the step of crushing and defibering the plant fibers under the anhydrous condition and manufacturing the substrate by a dry airflow forming method comprises the step of performing static electricity removal treatment on the crushed and defibered single fibrous fibers.
Alternatively, supporting the coating fluid on the substrate comprises spraying the coating fluid onto the substrate by non-physical contact spray coating.
Optionally, the dry-process reconstituted tobacco production method further comprises the step of rewinding, calendaring and cutting the dry-process reconstituted tobacco to be used as a cigarette filter.
Optionally, the dry-process reconstituted tobacco production method further comprises the step of rewinding, calendaring and cutting the dry-process reconstituted tobacco to be used as a core material of the cigarette which is not burnt during heating.
Alternatively, performing the drying treatment includes placing the substrate carrying the coating liquid in heated air to perform drying.
Alternatively, the supporting the coating liquid on the substrate and performing the drying process includes:
spraying coating liquid on the front surface of the substrate under the condition that negative pressure exists on the back surface of the substrate, and then drying;
and spraying the coating liquid on the reverse side of the substrate under the condition that negative pressure exists on the front side of the substrate, and then drying.
A dry reconstituted tobacco production facility comprising:
the fiber decomposition device is used for crushing and defibering the plant fibers;
the substrate forming device is used for manufacturing the broken and fluffed plant fibers into a substrate;
the spraying device is used for spraying the coating liquid on the substrate;
and the drying device is used for drying the substrate loaded with the coating liquid, so that the dry reconstituted tobacco is obtained.
Optionally, the fiber decomposition device comprises a fiber frame, and a coarse crusher and a fine crusher which are sequentially communicated, wherein the fiber frame is used for supporting the plant fibers, and the coarse crusher and the fine crusher are used for crushing and defibering the plant fibers.
Optionally, the fiber decomposition device further comprises a fiber metering device, the rough crusher, the fine crusher and the fiber metering device are sequentially communicated, and the fiber metering device is used for accurately controlling the output quantity of the fibers.
Optionally, the fiber decomposition device further comprises a humidifying device for humidifying air in the coarse crusher, the fine crusher and the fiber metering mechanism.
Optionally, the substrate forming device includes a plurality of fiber conveying pipes, a screen drum, a mesh belt, a plurality of guide rollers and a first negative pressure tank, the plurality of fiber conveying pipes are respectively communicated with the screen drum, the mesh belt is located below the screen drum and used for gathering fibers output by the screen drum to form the substrate, the mesh belt is supported by the plurality of guide rollers and is driven to circularly operate, and the first negative pressure tank is arranged in an area surrounded by the mesh belt and used for attracting the fibers to gather on the mesh belt.
Optionally, a breaker roll is provided within the screen cylinder.
Optionally, the substrate forming device comprises a humidity controller and a static elimination net, wherein the humidity controller is used for controlling the environment humidity in the substrate forming process, and the static elimination net is arranged in the screen drum and used for reducing static in the substrate forming process.
Optionally, the spraying device comprises a storage tank, a buffer and a nozzle which are sequentially communicated, wherein the storage tank is used for storing the coating liquid, and the buffer is used for adjusting the flowing speed and pressure of the coating liquid.
Optionally, the storage tank is provided with a constant pressure supply and the nozzle is provided with a compressed air inlet.
Optionally, the drying device includes an air circulation device and a drying oven, the air circulation device includes an air circulation channel, a heating device for heating air in the air circulation channel, and a negative pressure air blower for driving the heated air circulation flow of the air circulation channel, an inlet and an outlet of the air circulation channel are respectively communicated with the drying oven, the drying oven is used for storing the substrate to be dried, a guide plate and a second negative pressure air oven are arranged in the drying oven, the guide plate is used for guiding the flow direction of the air in the drying oven, and the second negative pressure air oven is matched with the negative pressure air blower for ensuring the circulation flow of the air.
The dry reconstituted tobacco is prepared by the dry reconstituted tobacco production method or the dry reconstituted tobacco production equipment.
The beneficial effects of the invention include:
(1) compared with the current mainstream reconstituted tobacco production process, the dry reconstituted tobacco production method has the advantages of simple flow, basically no discharge of solid-liquid waste in the production process, no waste treatment cost and environmental friendliness; the tobacco raw material is crushed, the fibers are defibered, the substrate is formed and even the whole production process basically does not need water, so that the water consumption is greatly reduced, the loss of effective components of the tobacco raw material is avoided, and the comprehensive utilization rate of the tobacco raw material and the quality of the obtained product are improved. The dry method reconstituted tobacco production method is a simple, high-efficiency, clean and environment-friendly production mode.
(2) The dry reconstituted tobacco production equipment has low water consumption, little environmental pollution and high product quality, and is additionally provided with a smoke agent and/or tobacco essence and spice adding equipment and a water online monitoring equipment on the basis of conventional reconstituted tobacco sheet product production equipment, thereby further ensuring the excellent quality and the quality stability of the product.
(3) The dry reconstituted tobacco can load tobacco raw materials and/or tobacco flavor raw materials with high proportion, has a loose and porous physical structure, can be used for conventional cigarette filter tips, can enable the cigarette filter tips and tobacco shreds to form a novel form which is formed by tobacco substances, can effectively improve the cigarette smoking taste, and plays roles of moistening, flavor enhancement and the like.
(4) The dry reconstituted tobacco can load the smoke agent and/or the tobacco flavor raw material with high proportion, and combines the high reducibility and loose and porous physical structure of the effective tobacco components of the dry reconstituted tobacco, so that the high-efficiency smoke generation of the formed heating non-combustion cigarette can be ensured, the high-level sensory quality of the formed heating non-combustion cigarette product and the effective volatilization of the formed smoke can also be ensured, and the heating non-combustion cigarette product has good sensory quality and user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a tobacco leaf production method provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a fiber decomposition device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a substrate molding apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a spraying apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a drying box of the drying apparatus according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of an air circulation device of a drying device according to an embodiment of the present invention.
Icon: 1-a fiber frame; 2-a coarse crusher; 3-a fine crusher; 4-a fiber metering device; 5-a humidifying device; 6-a first air inlet; 7-a second air inlet; 8-fiber conveying pipe; 9-a screen drum; 10-a breaking roller; 11-a mesh belt; 12-a guide roller; 13-a first negative pressure tank; 14-a forming frame; 15-mounting a box; 16-a spray frame; 17-a buffer; 18-a bumper mount; 19-a nozzle main frame; 20-nozzle sub-frame; 21-a nozzle; 22-a baffle; 23-a second negative pressure tank; 24-a moisture removal device; 25-negative pressure fan; 26-third air inlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Further, the present invention is illustrated in detail by the following examples, but the present invention is not limited to these specific process equipment and process flow, and it is not intended that the present invention be implemented by relying on the following detailed process equipment and process flow. It is obvious to those skilled in the art that any modification of the present invention, equivalent substitution of each raw material and addition of auxiliary components to the product of the present invention, selection of specific modes, etc., fall within the scope of protection and invention of the present invention.
Referring to fig. 1, the method for producing reconstituted tobacco by the dry method comprises the following steps:
crushing and defibering plant fibers under the anhydrous condition to prepare a substrate;
mixing tobacco powder with water, adhesive, smoking agent, tobacco essence and perfume, and humectant to obtain coating liquid;
and loading the coating liquid on the substrate, and drying to prepare the dry reconstituted tobacco.
Wherein the plant fiber comprises one or more of hemp pulp, bamboo pulp and wood pulp. Crushing and defibering plant fibers under the anhydrous condition, and manufacturing the substrate by a dry airflow forming mode, wherein the step of carrying out static electricity removal treatment on single fibrous fibers after crushing and defibering.
The tobacco powder is obtained by pulverizing tobacco raw material under anhydrous condition. The smoking agent comprises glycerol, propylene glycol, sorbitol, etc., and the tobacco essence comprises burley tobacco absolute, cocoa extract, tobacco leaf extract, aromatic tobacco extract, etc. Loading the coating solution onto the substrate comprises spraying the coating solution onto the substrate by a non-physical contact spray coating method.
The drying treatment includes drying the substrate carrying the coating liquid in heated air. Further, the carrying of the coating liquid on the substrate and the drying treatment includes: spraying coating liquid on the front surface of the substrate under the condition that negative pressure exists on the back surface of the substrate, and then drying; and spraying the coating liquid on the reverse side of the substrate under the condition that negative pressure exists on the front side of the substrate, and then drying.
In detail, the production process mainly comprises the working procedures of preparing tobacco powder, preparing coating liquid, forming a substrate, coating and drying, adding a smoke agent and/or essence and spice for surface-fragrance cigarettes and the like.
Furthermore, in the production process, except the coating liquid preparation process, water is not needed basically in the whole production process, so that the water consumption is greatly reduced, and the water in the coating liquid is exerted in the drying process, so that solid-liquid waste is not discharged basically in the production process, and the method is environment-friendly and is a clean and environment-friendly production mode.
Furthermore, the tobacco powder preparation process can convert macromolecular substances in the tobacco raw materials into micromolecular substances which have positive effects on the sensory quality of products and are easier to volatilize by means of pretreatment of microorganisms, biological enzyme treatment and the like, and the pretreated tobacco raw materials are directly crushed and sieved and then are all applied to the coating liquid preparation process, so that the loss of effective components of the tobacco raw materials is avoided, and the comprehensive utilization rate of the raw materials is improved.
Furthermore, the preparation process of the coating liquid not only can realize the basic function of effectively mixing the tobacco raw material, the adhesive, the smoke agent, the tobacco essence and spice and other auxiliary materials, but also can meet the adding requirement of the smoke agent, the tobacco essence and spice and other materials which need to be added in a large proportion in the heating non-combustible tobacco core material, only needs to finely adjust the concentration of the coating liquid, and not only can avoid the condition that the coating liquid is too viscous and the coating process is influenced and the product quality is unstable due to the fact that the smoke agent, the tobacco essence and spice and other materials are added in a large proportion under the common condition, but also can ensure that no obvious extra pressure is caused to the drying process, and the process is adjustable, controllable and flexible.
Furthermore, the substrate forming process is a low-quantitative substrate forming process capable of eliminating electrostatic flocculation, is suitable for single addition of common plant fibers such as wood pulp, hemp pulp and bamboo pulp, and can meet the requirement of simultaneous addition of various fiber raw materials in the plant fibers, tobacco stems and even special fibers such as tea stems, agilawood leaves and liquorice fibers, and the process has good adaptability.
Furthermore, the coating and drying process can realize the uniform, metering and large-proportion addition of the high-viscosity high-solid-content coating liquid through an adjustable and controllable spraying process, and can improve the retention of volatile effective components such as smoke agents, tobacco flavors and fragrances and the like in products to the greatest extent while meeting the requirement of full drying of the products through process adjustment such as vehicle speed reduction, hot air circulation penetrating type drying, low-temperature drying and the like, thereby ensuring the quality of the products.
Furthermore, the process of adding the smoke agent and/or the essence and spice for the surface-fragrance type cigarette is an innovative means of avoiding the drying process and providing guarantee for the quality of the cigarette core material and the finished cigarette product thereof which are heated and not combusted under the condition that the product is fully dried, wherein the smoke agent, the essence and spice for the surface-fragrance type cigarette and the like have obvious influence on the quality of the heated and non-combusted cigarette and the components which are easily volatilized are fully reserved.
Further, the smoke agent and/or the essence perfume for the surface-fragrant cigarette, wherein the smoke agent comprises but is not limited to glycerol, propylene glycol, sorbitol and the like, the surface-fragrant essence perfume comprises but is not limited to burley absolute, cocoa extract, tobacco leaf extract, aromatic tobacco extract and the like, the materials can be directly added into the coating liquid or added externally, and can also be added into the coating liquid after being processed by technical means, and the method comprises but is not limited to concentration, microencapsulation and the like, so that the stability and the retention rate in the production and processing process of the smoke agent and/or the surface-fragrant cigarette are improved.
Furthermore, after the production process is adjusted in a small range, the production of dry reconstituted tobacco products for filter sticks and dry reconstituted tobacco products for heating and non-combustion can be met, and the functional expansibility is good.
Furthermore, the production process is a manufacturing method of the cigarette core material which can realize batch production and is not burnt by heating.
Example 1
Selecting bleached wood pulp as a plant fiber raw material, designing a substrate ration of 22g/m2, a dry-process reconstituted tobacco product ration of 110g/m2, a tobacco raw material as a cured tobacco type leaf group formula, and a production line running speed of 10m/min, and producing by using the dry-process reconstituted tobacco production process and equipment, wherein the production process comprises the following steps:
1. preparation of coating liquid
(1) Preparing tobacco powder: taking the raw materials of the formula of the cured tobacco leaf group with the moisture controlled below 10%, crushing the raw materials at low temperature by a crusher, and sieving the crushed raw materials with a 400-mesh sieve for later use;
(2) preparation of coating liquid: the prepared tobacco powder, the smoke agent, the moisture-proof agent, the adhesive, the essence and the spice for the cigarettes and a proper amount of water are mixed uniformly to form a coating liquid with the solid content of 15 percent for later use.
2. Substrate forming
Controlling the internal humidity of the two processes of fiber defibering and substrate forming to be more than or equal to 85 percent, defibering bleached wood pulp with the dryness of more than or equal to 80 percent into single fibrous fibers by fiber defibering equipment, metering and conveying the fibers to a substrate forming device, and forming two groups of four stages under the control of measures such as the scattering action of a scattering roller in the substrate forming device, internal humidity control, a static removing net, the negative pressure action of a negative pressure vacuum box, an air homogenizing mechanism and the like to form a substrate with the quantitative of 22g/m2 for later use.
3. Spraying and drying
(1) Primary spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate during spraying for negative pressure vacuum suction, and the spraying amount is set to be 18% of the total spraying amount;
(2) primary drying: conveying the substrate subjected to the first spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 75 ℃;
(3) secondary spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 24% of the total spraying amount;
(4) secondary drying: conveying the substrate subjected to the secondary spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 80 ℃;
(5) and (3) third spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate during spraying for negative pressure vacuum suction, and the spraying amount is set to be 32% of the total spraying amount;
(6) and (3) drying for three times: conveying the substrate sprayed for the third time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 95 ℃;
(7) and (3) four times of spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 26% of the total spraying amount;
(8) and (3) drying for four times: conveying the substrate sprayed for the fourth time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 90 ℃;
(9) an additional process comprises the following steps: the paper web was loaded with a product proportion of 8% glycerol and 0.5% burley absolute;
(10) and (3) state-adjusting drying: and (3) reasonably designing whether a state-adjusting oven is used and the use temperature according to the drying condition of the dry reconstituted tobacco, ensuring that the moisture of the dry reconstituted tobacco product reaches the range of 10-12%, and obtaining the dry reconstituted tobacco product for heating non-combustible cigarettes.
Example 2
Selecting unbleached jute pulp as a plant fiber raw material, designing a substrate ration to be 15g/m2, designing a dry-process reconstituted tobacco product ration to be 75g/m2, selecting a tobacco raw material as a flue-cured tobacco type monomer raw material, and operating a production line at a speed of 40m/min, and carrying out production by the dry-process reconstituted tobacco production process and equipment, wherein the production process comprises the following steps:
1. preparation of coating liquid
(1) Preparing tobacco powder: the method comprises the following steps of (1) crushing flue-cured tobacco type tobacco leaf monomers with the moisture controlled below 10% by a crusher at a low temperature, and sieving by a 40-mesh sieve for later use;
(2) preparation of coating liquid: the prepared tobacco powder, humectant, adhesive, essence and spice for tobacco and a proper amount of water are mixed uniformly to form a coating liquid with the solid content of 25% for later use.
2. Substrate forming
Controlling the internal humidity of the two processes of fiber defibering and substrate forming to be more than or equal to 85 percent, defibering unbleached hemp pulp with the dryness of more than or equal to 80 percent into single fibrous fibers by fiber defibering equipment, metering and conveying the single fibrous fibers to a substrate former, and carrying out two groups of four-stage forming under the control of measures such as the scattering action of a scattering roller in the substrate former, internal humidity control, a static removing net, the negative pressure action of a negative pressure vacuum box, a wind homogenizing mechanism and the like to form a substrate with the quantitative of 15g/m2 for later use.
3. Spraying and drying
(1) Primary spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate during spraying for negative pressure vacuum suction, and the spraying amount is set to be 20% of the total spraying amount;
(2) primary drying: conveying the substrate subjected to the first spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 115 ℃;
(3) secondary spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 25% of the total spraying amount;
(4) secondary drying: conveying the substrate subjected to the secondary spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 120 ℃;
(5) and (3) third spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 30% of the total spraying amount;
(6) and (3) drying for three times: conveying the substrate sprayed for the third time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 135 ℃;
(7) and (3) four times of spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 25% of the total spraying amount;
(8) and (3) drying for four times: conveying the substrate sprayed for the fourth time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 125 ℃;
(9) and (3) state-adjusting drying: and (3) reasonably designing whether a state-adjusting oven is used and the use temperature according to the drying condition of the dry-method reconstituted tobacco, and ensuring that the moisture of the dry-method reconstituted tobacco product reaches the range of 10-12% to obtain the flue-cured tobacco type dry-method reconstituted tobacco sheet product.
Example 3
Selecting unbleached fluff pulp as a plant fiber raw material, designing a substrate ration of 25g/m2, a dry-process reconstituted tobacco product ration of 100g/m2, a tobacco raw material of a cured tobacco type leaf group formula and a characteristic fragrant plant raw material agilawood, and a production line running speed of 30m/min, wherein the production is carried out by the dry-process reconstituted tobacco production process and equipment, and the specific steps are as follows:
1. preparation of coating liquid
(1) Preparing tobacco powder: respectively taking a cured tobacco type leaf group formula raw material with the water content controlled below 10% and a characteristic fragrant plant raw material agilawood, crushing the raw materials at low temperature by a crusher, and respectively sieving the crushed raw materials with a 150-mesh sieve for later use;
(2) preparation of coating liquid: the prepared tobacco powder, agilawood powder, humectant, adhesive, tobacco essence and spice and a proper amount of water are mixed uniformly to form a coating liquid with the solid content of 20% for later use.
2. Substrate forming
Controlling the internal humidity of the two processes of fiber defibering and substrate forming to be more than or equal to 85 percent, defibering unbleached fluff pulp with the dryness of more than or equal to 80 percent into single fibrous fibers by fiber defibering equipment, metering and conveying the single fibrous fibers to a substrate former, and carrying out two groups of four-stage forming under the control of measures such as the scattering action of a scattering roller in the substrate former, the internal humidity control, a static removing net, the negative pressure action of a negative pressure vacuum box, a wind homogenizing mechanism and the like to form a substrate with the quantitative of 25g/m2 for later use.
3. Spraying and drying
(1) Primary spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 15% of the total spraying amount;
(2) primary drying: conveying the substrate subjected to the first spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 100 ℃;
(3) secondary spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 30% of the total spraying amount;
(4) secondary drying: conveying the substrate subjected to the secondary spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 130 ℃;
(5) and (3) third spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate during spraying for negative pressure vacuum suction, and the spraying amount is set to be 35% of the total spraying amount;
(6) and (3) drying for three times: conveying the substrate sprayed for the third time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 135 ℃;
(7) and (3) four times of spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 20% of the total spraying amount;
(8) and (3) drying for four times: conveying the substrate sprayed for the fourth time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 120 ℃;
(9) and (3) state-adjusting drying: and (3) reasonably designing whether a state-adjusting oven is used and the use temperature according to the drying condition of the dry reconstituted tobacco, and ensuring that the moisture of the dry reconstituted tobacco product reaches the range of 10-12% to obtain the dry reconstituted tobacco product with the characteristic aroma of agilawood.
Example 4
Selecting unbleached bamboo pulp and tobacco stems as plant fiber raw materials, designing a substrate ration to be 35g/m2, a dry-process reconstituted tobacco product ration to be 50g/m2, a tobacco raw material to be a mixed type leaf group formula, and a production line running speed to be 20m/min, and carrying out production through the dry-process reconstituted tobacco production process and equipment, wherein the production process comprises the following steps:
1. preparation of coating liquid
(1) Preparing tobacco powder: mixing type leaf group formula raw materials with the moisture controlled below 10%, crushing by a crusher at low temperature, and sieving by a 200-mesh sieve for later use;
(2) preparation of coating liquid: the prepared tobacco powder, humectant, adhesive, essence and spice for tobacco and a proper amount of water are mixed uniformly to form a coating liquid with solid content of 10% for later use.
2. Substrate forming
Controlling the internal humidity of the two procedures of fiber defibering and substrate forming to be more than or equal to 85 percent, defibering unbleached bamboo pulp and tobacco stalks with the dryness of more than or equal to 80 percent into single fibrous fibers by fiber defibering equipment, respectively metering and conveying a plurality of fiber conveying pipelines to a substrate former, and carrying out two groups of four-stage forming under the control of measures such as the scattering action of a scattering roller in the substrate former, the internal humidity control, a static removing net, the negative pressure action of a negative pressure vacuum box, a uniform air mechanism and the like to form a substrate with the quantitative of 35g/m2 for later use.
3. Spraying and drying
(1) Primary spraying: spraying an adhesive on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 1.5% of the total amount of the substrate;
(2) primary drying: conveying the substrate subjected to the first spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 80 ℃;
(3) secondary spraying: spraying an adhesive on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 1.5% of the total amount of the substrate;
(4) secondary drying: conveying the substrate subjected to the secondary spraying to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 90 ℃;
(5) and (3) third spraying: spraying the coating liquid on the front surface of the substrate, wherein a negative pressure suction box is arranged on the back surface of the substrate during spraying for negative pressure vacuum suction, and the spraying amount is set to be 50% of the total spraying amount;
(6) and (3) drying for three times: conveying the substrate sprayed for the third time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 110 ℃;
(7) and (3) four times of spraying: spraying the coating liquid on the back surface of the substrate, wherein a negative pressure suction box is arranged on the front surface of the substrate for negative pressure vacuum suction during spraying, and the spraying amount is set to be 50% of the total spraying amount;
(8) and (3) drying for four times: conveying the substrate sprayed for the fourth time to a drying box through a mesh belt for drying, and setting the temperature of hot air to be 100 ℃;
(9) and (3) state-adjusting drying: and (3) reasonably designing whether a state-adjusting oven is used and the use temperature according to the drying condition of the dry reconstituted tobacco, and ensuring that the moisture of the dry reconstituted tobacco product reaches the range of 10-12% to obtain the dry reconstituted tobacco product for the filter stick.
Referring to fig. 2-6, the embodiment further discloses a dry-process reconstituted tobacco production device, which comprises a fiber decomposition device, a substrate forming device, a spraying device and a spraying device, wherein the fiber decomposition device is used for crushing and defibering plant fibers; the substrate forming device is used for manufacturing the broken and fluffed plant fibers into a substrate; the spraying device is used for spraying the coating liquid on the substrate; and the drying device is used for drying the substrate loaded with the coating liquid, so that the dry reconstituted tobacco is obtained.
Wherein, fibre decomposition device includes fibre frame 1 and the coarse crusher 2, the smart breaker 3, the fibre metering device 4 that communicate in proper order, and fibre frame 1 is used for supporting plant fiber, and coarse crusher 2 and smart breaker 3 are used for the broken vegetable fiber of discongesting, and fibre metering device 4 is used for the fibrous output quantity of accurate control.
The fiber decomposition device also comprises a humidifying device 5 which is communicated with a first air inlet 6 of the coarse crusher 2 and a second air inlet 7 of the fiber metering device 4 at the same time and is used for humidifying the air in the coarse crusher 2, the fine crusher 3 and the fiber metering device 4.
The substrate forming device comprises a forming rack 14, and a plurality of fiber conveying pipes 8, a screen cylinder 9, a mesh belt 11, a plurality of guide rollers 12 and a first negative pressure box 13 which are arranged on the forming rack 14, wherein the plurality of fiber conveying pipes 8 are respectively communicated with an inlet of the screen cylinder 9. A scattering roller 10 is arranged in the screen drum 9 and is used for scattering fibers entering the screen drum. The mesh belt 11 is located below the screen drum 9 and corresponds to an outlet of the screen drum 9, the mesh belt 11 is used for gathering fibers output by the screen drum 9 to form a substrate, the mesh belt 11 is supported by a plurality of guide rollers 12 and is driven to circularly run, and the first negative pressure box 13 is arranged in an area enclosed by the mesh belt 11 and is used for attracting the fibers to gather and form on the mesh belt 11.
The substrate forming device comprises a humidity controller and a static eliminating net, wherein the humidity controller is used for controlling the environment humidity in the substrate forming process, and the static eliminating net is arranged in the screen cylinder and used for reducing static in the substrate forming process.
The spraying device comprises a spraying frame, a storage tank, a buffer 17 and a nozzle 21, wherein the storage tank, the buffer 17 and the nozzle 21 are sequentially communicated, the storage tank is used for storing the coating liquid, and the storage tank is provided with a constant pressure supply device so as to ensure the output of the coating liquid. The buffer 17 is provided in the coater rack for adjusting the flow speed and pressure of the coating liquid. The spray coating support 16 is provided with an installation box 15, the installation box 15 is provided with a buffer installation frame 18, the buffer installation frame 18 is provided with a nozzle main frame 19, the nozzle main frame 19 is provided with a plurality of nozzle auxiliary frames 20, the buffer 17 is installed on the buffer installation frame 18, and the number of the nozzles 21 is multiple and is respectively arranged on the nozzle auxiliary frames 20. The nozzle 21 is provided with a compressed air inlet to ensure the spraying effect of the nozzle and improve the quality of the substrate after molding.
The drying device comprises an air circulation device, a drying box and a moisture exhaust device 24, the air circulation device comprises an air circulation channel, a heating device used for heating air in the air circulation channel and a negative pressure fan 25 used for driving the heated air of the air circulation channel to circularly flow, an inlet (namely a third air inlet 26) and an outlet of the air circulation channel are respectively communicated with the drying box, the drying box is used for storing a substrate to be dried, a guide plate 22 and a second negative pressure box 23 are arranged in the drying box, the guide plate 22 is used for guiding the flow direction of the air in the drying box, and the second negative pressure box 23 is matched with the negative pressure fan 25 and used for ensuring the circular flow of the air. The moisture removing device 24 is disposed on the drying box for removing moisture in the drying box.
In detail, the dry reconstituted tobacco production equipment for heating non-combustion is additionally provided with the smoke agent and/or tobacco essence and spice adding equipment and the moisture online monitoring equipment on the basis of the production equipment of the conventional dry reconstituted tobacco sheet product by combining the characteristic of heating non-combustion cigarette core materials, so that the excellent quality and the quality stability of the product are further ensured.
The embodiment of the invention provides dry reconstituted tobacco, which is prepared by the dry reconstituted tobacco production method or dry reconstituted tobacco production equipment.
In detail, the dry reconstituted tobacco product is a novel reconstituted tobacco product formed by dry reconstituted tobacco production process by using plant fibers, dry tobacco powder, tobacco fragments and other tobacco raw materials, adhesives, tobacco flavors and fragrances, humectants and/or smoke agents and other auxiliary materials by the dry air-flow forming process for reference.
Furthermore, the dry-process reconstituted tobacco has the same use mode as the paper-process reconstituted tobacco in the cigarette industry, and has the characteristics of higher filling value, stronger fragrance, lower water consumption, more environmental protection, higher comprehensive utilization rate of tobacco raw materials and the like.
Furthermore, the dry reconstituted tobacco for the filter stick can be used for a filter tip of a conventional burning and smoking cigarette, so that the cigarette filter tip and tobacco shreds can form a novel form which is formed by tobacco substances, the smoking taste of the cigarette can be effectively improved, and the effects of moisture retention, fragrance increasing and the like are achieved.
Furthermore, the dry reconstituted tobacco product for heating non-combustion can be loaded with tobacco raw materials, smoke agents and/or tobacco flavor raw materials in high proportion, and provides a material basis for good sensory quality of the cigarette product for heating non-combustion.
Furthermore, the dry reconstituted tobacco product for heating non-combustion has the physical structure of high reducibility and loose and porous of effective components of tobacco, provides a structural basis for efficient smoking of the formed cigarette without heating combustion and effective volatilization of the formed smoke, and further ensures high-level sensory quality and experience of the cigarette without heating combustion.
Furthermore, the dry reconstituted tobacco for the filter stick and the dry reconstituted tobacco product which is not burnt during heating can be well adapted to the forming process, the compounding process and the cigarette rolling process of the paper filter stick, and have good processing adaptability.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (20)
1. The production method of the dry reconstituted tobacco is characterized by comprising the following steps:
crushing and defibering plant fibers under the anhydrous condition to prepare a substrate;
mixing tobacco powder with water, adhesive, smoking agent, tobacco essence and perfume, and humectant to obtain coating liquid;
and loading the coating liquid on the substrate, and drying to prepare the dry reconstituted tobacco.
2. The method of claim 1, wherein the plant fiber comprises one or more of hemp pulp, bamboo pulp, and wood pulp.
3. The dry reconstituted tobacco production method according to claim 1, wherein the tobacco powder is obtained by pulverizing tobacco raw materials under anhydrous conditions.
4. The dry reconstituted tobacco production method according to claim 1, wherein the smoke agent comprises glycerol, propylene glycol and sorbitol, and the tobacco flavor and fragrance comprise burley tobacco absolute, cocoa extract, tobacco extract and aromatic tobacco extract.
5. The method for producing reconstituted tobacco by a dry process according to claim 1, wherein the step of crushing and defibering the plant fibers under anhydrous conditions and forming the plant fibers into the substrate by a dry process airflow molding method comprises the step of performing static electricity removal treatment on the crushed and decomposed individual fibrous fibers.
6. The method for producing dry reconstituted tobacco according to claim 1, wherein the step of loading the coating liquid on the substrate comprises spraying the coating liquid on the substrate in a non-physical contact spraying manner.
7. The dry reconstituted tobacco production method according to claim 1, further comprising the step of rewinding, calendaring and slitting the dry reconstituted tobacco to be used as a cigarette filter or a core material of a cigarette which is not burnt when heated.
8. The dry reconstituted tobacco production method according to claim 1, wherein the drying treatment comprises placing the coating liquid-bearing substrate in heated air for drying.
9. The dry reconstituted tobacco production method according to claim 1, wherein the loading and drying treatment of the coating liquid on the substrate comprises:
spraying coating liquid on the front surface of the substrate under the condition that negative pressure exists on the back surface of the substrate, and then drying;
and spraying the coating liquid on the reverse side of the substrate under the condition that negative pressure exists on the front side of the substrate, and then drying.
10. The dry reconstituted tobacco production equipment is characterized by comprising the following steps:
the fiber decomposition device is used for crushing and defibering the plant fibers;
the substrate forming device is used for manufacturing the broken and fluffed plant fibers into a substrate;
the spraying device is used for spraying the coating liquid on the substrate;
and the drying device is used for drying the substrate loaded with the coating liquid, so that the dry reconstituted tobacco is obtained.
11. The dry reconstituted tobacco production equipment according to claim 10, wherein the fiber decomposition device comprises a fiber frame, and a coarse crusher and a fine crusher which are communicated in sequence, the fiber frame is used for supporting plant fibers, and the coarse crusher and the fine crusher are used for crushing and defibering the plant fibers.
12. The dry reconstituted tobacco production equipment according to claim 11, wherein the fiber decomposition device further comprises a fiber metering device, the coarse crusher, the fine crusher and the fiber metering device are communicated in sequence, and the fiber metering device is used for accurately controlling the output quantity of the fibers.
13. The dry reconstituted tobacco production plant according to claim 12, wherein the fibre splitting device further comprises a humidifying device for humidifying the air within the coarse crusher, the fine crusher and the fibre metering mechanism.
14. The dry reconstituted tobacco production equipment according to claim 10, wherein the substrate forming device comprises a plurality of fiber conveying pipes, a screen cylinder, a mesh belt, a plurality of guide rollers and a first negative pressure tank, the plurality of fiber conveying pipes are respectively communicated with the screen cylinder, the mesh belt is positioned below the screen cylinder and used for gathering fibers output by the screen cylinder to form the substrate, the mesh belt is supported by the plurality of guide rollers and driven to circularly operate, and the first negative pressure tank is arranged in an area surrounded by the mesh belt and used for attracting the fibers to gather on the mesh belt.
15. The dry reconstituted tobacco production plant according to claim 14, wherein a breaker roll is arranged in the screen drum.
16. The dry reconstituted tobacco production equipment according to claim 14, wherein the substrate forming device comprises a humidity controller and a static elimination net, the humidity controller is used for controlling the environment humidity in the substrate forming process, and the static elimination net is arranged in the sieve cylinder and used for reducing static in the substrate forming process.
17. The dry reconstituted tobacco production equipment according to claim 10, wherein the spraying device comprises a storage tank, a buffer and a nozzle which are sequentially communicated, the storage tank is used for storing the coating liquid, and the buffer is used for adjusting the flowing speed and pressure of the coating liquid.
18. The dry reconstituted tobacco production plant according to claim 17, wherein the storage tank is provided with a constant pressure feeder and the nozzle is provided with a compressed air inlet.
19. The dry reconstituted tobacco production equipment according to claim 10, wherein the drying device comprises an air circulation device and a drying box, the air circulation device comprises an air circulation channel, a heating device for heating air in the air circulation channel and a negative pressure air fan for driving the air circulation channel to circularly flow the heated air, an inlet and an outlet of the air circulation channel are respectively communicated with the drying box, the drying box is used for storing the substrate to be dried, a guide plate and a second negative pressure box are arranged in the drying box, the guide plate is used for guiding the flow direction of the air in the drying box, and the second negative pressure box is matched with the negative pressure air fan for ensuring the circular flow of the air.
20. A dry reconstituted tobacco, characterized in that it is produced by the dry reconstituted tobacco production method according to any one of claims 1 to 9 or the dry reconstituted tobacco production apparatus according to any one of claims 10 to 19.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810699318.1A CN110652028A (en) | 2018-06-29 | 2018-06-29 | Dry-process reconstituted tobacco, and dry-process reconstituted tobacco production method and equipment |
| EP18188277.0A EP3586649A1 (en) | 2018-06-29 | 2018-08-09 | Drying-process reconstituted tobacco leaf, method and device for producing drying-process reconstituted tobacco leaf |
| TW107128074A TW202000048A (en) | 2018-06-29 | 2018-08-10 | Drying-process reconstituted tobacco leaf, method and device for producing drying-process reconstituted tobacco leaf |
| SG10201806908VA SG10201806908VA (en) | 2018-06-29 | 2018-08-15 | Dry-process reconstituted tobacco leaf, method and device for producing dry-process reconstituted tobacco leaf |
| ZA2018/05507A ZA201805507B (en) | 2018-06-29 | 2018-08-17 | Dry-process reconstituted tobacco leaf, method and device for producing dry-process reconstituted tobacco leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810699318.1A CN110652028A (en) | 2018-06-29 | 2018-06-29 | Dry-process reconstituted tobacco, and dry-process reconstituted tobacco production method and equipment |
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| CN110652028A true CN110652028A (en) | 2020-01-07 |
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| CN201810699318.1A Pending CN110652028A (en) | 2018-06-29 | 2018-06-29 | Dry-process reconstituted tobacco, and dry-process reconstituted tobacco production method and equipment |
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| Country | Link |
|---|---|
| EP (1) | EP3586649A1 (en) |
| CN (1) | CN110652028A (en) |
| SG (1) | SG10201806908VA (en) |
| TW (1) | TW202000048A (en) |
| ZA (1) | ZA201805507B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111642780A (en) * | 2020-06-09 | 2020-09-11 | 云南中烟再造烟叶有限责任公司 | Reconstituted tobacco special for homogenized heating cigarette and preparation method thereof |
| CN113892671A (en) * | 2021-10-19 | 2022-01-07 | 湖北中烟工业有限责任公司 | Method for preparing eggplant coat and eggplant sleeve based on dry-process slice technology |
| CN115644489A (en) * | 2022-10-11 | 2023-01-31 | 安徽中烟工业有限责任公司 | Cigarette tobacco production and processing equipment |
| WO2023221441A1 (en) * | 2022-05-18 | 2023-11-23 | 湖北中烟工业有限责任公司 | Method for processing flavored reconstituted tobacco |
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| CN113455693A (en) * | 2020-03-31 | 2021-10-01 | 中烟施伟策（云南）再造烟叶有限公司 | Method for preparing non-tobacco-cocoa type tobacco material by wet papermaking technology |
| CN111657532B (en) * | 2020-05-22 | 2023-08-15 | 苏州东福来机电科技有限公司 | Reconstituted tobacco coating and calendaring production line and production process |
| CN112021633A (en) * | 2020-09-18 | 2020-12-04 | 湖北中烟工业有限责任公司 | Continuous negative-pressure double-sided perfuming method and equipment thereof |
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| CN113576018A (en) * | 2021-07-28 | 2021-11-02 | 湖南三匠人科技有限公司 | Tobacco sheet coating device and method |
| WO2023021227A1 (en) * | 2021-08-19 | 2023-02-23 | Papel Aralar, S.A. | Paper for producing dispersible cigarette filters and method for producing same |
| CN115777979A (en) * | 2022-11-11 | 2023-03-14 | 湖北中烟工业有限责任公司 | Reconstituted tobacco and preparation method thereof |
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| CN113892671B (en) * | 2021-10-19 | 2023-01-31 | 湖北中烟工业有限责任公司 | Method for preparing eggplant coat and eggplant sleeve based on dry-process slice technology |
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Also Published As
| Publication number | Publication date |
|---|---|
| ZA201805507B (en) | 2020-12-23 |
| TW202000048A (en) | 2020-01-01 |
| SG10201806908VA (en) | 2020-01-30 |
| EP3586649A1 (en) | 2020-01-01 |
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