阅读说明：本技术 再造烟叶双面单独涂布工艺 (double-sided independent coating process for reconstituted tobacco ) 是由 喻世涛 陶永峰 姚建武 魏刚 李丹 田兴友 于 2019-10-12 设计创作，主要内容包括：本发明提供一种再造烟叶双面单独涂布工艺,所述工艺采用再造烟叶双面单独涂布装置完成；所述再造烟叶双面单独涂布装置包括涂布液罐、位于涂布液罐中的离心泵、管道、上排喷涂孔、下排喷涂孔、牵引网带、烘箱,其中,涂布罐中的涂布液在离心泵的作用下,经管道输送进入相应的上排喷涂孔和下排喷涂孔,并分别喷涂在经过牵引网带运送的再造烟叶基片上表面和下表面,且均经过烘箱干燥,即完成再造烟叶双面单独涂布。本发明通过两次涂布的方式,实现再造烟叶正反面涂布液的化学成分个性化,赋予再造烟叶不同的香气风格,提高再造烟叶应用效果。(the invention provides a reconstituted tobacco double-sided independent coating process, which is completed by adopting a reconstituted tobacco double-sided independent coating device; the reconstituted tobacco double-sided independent coating device comprises a coating liquid tank, a centrifugal pump located in the coating liquid tank, a pipeline, an upper row of spraying holes, a lower row of spraying holes, a traction mesh belt and an oven, wherein coating liquid in the coating tank is conveyed into the corresponding upper row of spraying holes and the lower row of spraying holes through the pipeline under the action of the centrifugal pump, is respectively sprayed on the upper surface and the lower surface of the reconstituted tobacco substrate conveyed by the traction mesh belt, and is dried by the oven, so that double-sided independent coating of the reconstituted tobacco is completed. According to the invention, through a mode of coating twice, the individuation of chemical components of the coating liquid on the front side and the back side of the reconstituted tobacco is realized, different aroma styles are given to the reconstituted tobacco, and the application effect of the reconstituted tobacco is improved.)

1. A double-sided independent coating process for reconstituted tobacco is characterized in that: the process is completed by adopting a reconstituted tobacco double-sided independent coating device; the reconstituted tobacco double-sided independent coating device comprises a coating liquid tank, a centrifugal pump, a pipeline, an upper row of spraying holes (2), a lower row of spraying holes (4), a traction mesh belt and an oven (1), wherein the centrifugal pump is positioned in the coating liquid tank, coating liquid in the coating tank is conveyed into the corresponding upper row of spraying holes and the lower row of spraying holes through the pipeline under the action of the centrifugal pump, and is respectively sprayed on the upper surface and the lower surface of a reconstituted tobacco substrate conveyed by the traction mesh belt, and the reconstituted tobacco double-sided independent coating device is dried by the oven, so that the double-sided independent coating of the reconstituted tobacco is completed, and the:

(1) adding pure water 6-8 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 75-80 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) Filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 35-45% to obtain a concentrated solution;

(4) And (3) carrying out pipeline treatment on the concentrated solution obtained in the step (3) according to the ratio of 3: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding essence A accounting for 0.5-30% of the weight of the concentrated solution into the coating liquid tank No. 1, adding essence B accounting for 0.5-15% of the weight of the concentrated solution into the coating liquid tank No. 2, and stirring and mixing uniformly to obtain coating liquid A and coating liquid B for later use; wherein the essence A is caramel essence, and the essence B is bean-flavor essence;

(6) starting a No. 1 coating liquid tank centrifugal pump, so that coating liquid A is sprayed out from the upper row of spraying holes at the flow rate of 40-65 g/s, meanwhile, the substrate prepared in the step (2) enters the lower portion of the upper row of spraying holes through a traction mesh belt, so that the coating liquid A is uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 95-105 ℃ to obtain the substrate with a single surface coated;

(7) starting a No. 2 coating liquid tank centrifugal pump, spraying coating liquid B from the lower row of spraying holes at the flow rate of 25-45 g/s, meanwhile, reversely feeding the single-side coated substrate prepared in the step (6) below the lower row of spraying holes through a traction mesh belt, uniformly spraying the coating liquid B on the lower surface of the substrate, and drying the substrate in an oven at the temperature of 85-95 ℃ to obtain a double-side coated substrate;

(8) and (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

Technical Field

the invention belongs to the field of manufacturing and processing of tobacco industry, and particularly relates to a double-sided independent coating process for reconstituted tobacco.

Background

the reconstituted tobacco leaves are prepared by firstly extracting tobacco raw materials such as tobacco powder, tobacco stems, tobacco fragments and the like with a solvent (usually water), and processing solid parts obtained after solid-liquid separation into substrates according to a papermaking method; the liquid part is refined, concentrated and aromatized to prepare coating liquid, and then the coating liquid is coated on the surface layer of the substrate, and the sheet is prepared after the working procedures of hot air drying, slicing and the like. Currently, most reconstituted tobacco enterprises introduce a substrate into a tank filled with coating liquid, so that the coating liquid in the tank is adhered to the upper surface layer and the lower surface layer of the substrate to complete the coating process of the substrate. When the coating is carried out by the method, the components and the types of the coating liquid on the upper surface layer and the lower surface layer of the substrate are completely the same, and the style of the sheet product is single.

As can be seen from the current literature data, the existing reports about the reconstituted tobacco coating mode are all double-sided simultaneous coating. According to the method, one surface of the base sheet is sprayed firstly, the other surface of the base sheet is sprayed after primary drying, and the coating liquids sprayed twice are different in chemical composition, so that different aroma styles can be given to the reconstituted tobacco, and the application field of the reconstituted tobacco can be further widened.

disclosure of Invention

The invention provides a process capable of realizing double-sided independent coating of reconstituted tobacco and improving the application effect of the reconstituted tobacco, aiming at overcoming the defects in the prior coating technology.

in order to achieve the purpose, the invention adopts the following technical scheme:

The process is completed by adopting a reconstituted tobacco double-sided independent coating device; the reconstituted tobacco double-sided independent coating device comprises a coating liquid tank, a centrifugal pump, a pipeline, an upper row of spraying holes 2, a lower row of spraying holes 4, a traction mesh belt and an oven 1, wherein the centrifugal pump is positioned in the coating liquid tank, coating liquid in the coating tank enters the corresponding upper row of spraying holes and the lower row of spraying holes through a conveying pipeline under the action of the centrifugal pump, and is respectively sprayed on the upper surface and the lower surface of a reconstituted tobacco substrate conveyed by the traction mesh belt, and the reconstituted tobacco double-sided independent coating device is dried by the oven, so that double-sided independent coating of the reconstituted tobacco is completed, and the device comprises:

(1) Adding pure water 6-8 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 75-80 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) Pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) Filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 35-45% to obtain a concentrated solution;

(4) and (3) carrying out pipeline treatment on the concentrated solution obtained in the step (3) according to the ratio of 3: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding essence A (burnt sweet flavor) accounting for 0.5-30% of the weight of the concentrated solution into the No. 1 coating liquid tank, adding essence B (bean flavor) accounting for 0.5-15% of the weight of the concentrated solution into the No. 2 coating liquid tank, and stirring and mixing uniformly to obtain coating liquid A and coating liquid B for later use;

(6) starting a No. 1 coating liquid tank centrifugal pump, so that coating liquid A is sprayed out from the upper row of spraying holes at the flow rate of 40-65 g/s, meanwhile, the substrate prepared in the step (2) enters the lower portion of the upper row of spraying holes through a traction mesh belt, so that the coating liquid A is uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 95-105 ℃ to obtain the substrate with a single surface coated;

(7) starting a No. 2 coating liquid tank centrifugal pump, spraying coating liquid B from the lower row of spraying holes at the flow rate of 25-45 g/s, meanwhile, reversely feeding the single-side coated substrate prepared in the step (6) below the lower row of spraying holes through a traction mesh belt, uniformly spraying the coating liquid B on the lower surface of the substrate, and drying the substrate in an oven at the temperature of 85-95 ℃ to obtain a double-side coated substrate;

(8) and (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

compared with the prior art, the invention has the following advantages: the invention adopts a double-sided independent coating process, changes the traditional double-sided same coating mode, and is beneficial to realizing the production and processing mode of individuation, specialization and flexibility of the reconstituted tobacco; meanwhile, by adjusting different essence components and adding proportions and by a mode of coating twice, the individuation of chemical components of the reconstituted tobacco front and back coating liquid is realized, different aroma style characteristics and cigarette application effects can be given to the reconstituted tobacco, and more selection spaces are provided for users.

Drawings

FIG. 1 is a schematic diagram of a double-sided individual coating process of reconstituted tobacco according to the present invention;

in the figure: 1-oven, 2-upper row of spraying holes, 3-substrate, 4-lower row of spraying holes and 5-substrate running direction.

Detailed Description

In order to better explain the present invention, the main content of the present invention is further explained below with reference to the specific embodiments and the attached drawings, but the content of the present invention is not limited to only the following embodiments.

[ example 1 ]

the double-sided independent coating process for the reconstituted tobacco mainly comprises the following steps:

(1) adding pure water 6 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 80 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) Filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 37% to obtain a concentrated solution;

(4) And (3) metering the concentrated solution obtained in the step (3) by using an online flowmeter, wherein the ratio of the concentrated solution to the concentrated solution is as follows: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding essence A (independently prepared caramel essence) 0.5% of the weight of the concentrated solution into the No. 1 coating liquid tank, adding essence B (independently prepared bean-flavor essence) 4.5% of the weight of the concentrated solution into the No. 2 coating liquid tank, stirring and mixing uniformly to obtain coating liquid A and coating liquid B for later use;

(6) Starting a No. 1 coating liquid tank centrifugal pump, enabling coating liquid A to be sprayed out from the upper row of spraying holes at the flow rate of 45g/s, enabling the substrate prepared in the step (2) to enter the lower portion of the upper row of spraying holes through a traction mesh belt, enabling the coating liquid A to be uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 105 ℃ to obtain the substrate with a single surface coated;

(7) Starting a No. 2 coating liquid tank centrifugal pump, spraying coating liquid B from the lower spraying hole at the flow rate of 30g/s, reversely allowing the single-side coated substrate prepared in the step (6) to enter the lower part of the lower spraying hole through a traction mesh belt, uniformly spraying the coating liquid B on the lower surface of the substrate, and drying the substrate in an oven at the temperature of 95 ℃ to obtain a double-side coated substrate;

(8) And (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

[ example 2 ]

The double-sided independent coating process for the reconstituted tobacco mainly comprises the following steps:

(1) adding pure water 8 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 75 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) Pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 45% to obtain a concentrated solution;

(4) and (3) metering the concentrated solution obtained in the step (3) by using an online flowmeter, wherein the ratio of the concentrated solution to the concentrated solution is as follows: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding essence A (independently prepared caramel sweet flavor) 5% of the weight of the concentrated solution into the coating liquid tank No. 1, adding essence B (independently prepared bean-flavor) 15% of the weight of the concentrated solution into the coating liquid tank No. 2, and stirring and mixing uniformly to obtain coating liquid A and coating liquid B for later use;

(6) starting a No. 1 coating liquid tank centrifugal pump, enabling coating liquid A to be sprayed out from the upper row of spraying holes at the flow rate of 40g/s, enabling the substrate prepared in the step (2) to enter the lower portion of the upper row of spraying holes through a traction mesh belt, enabling the coating liquid A to be uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 95 ℃ to obtain the substrate with a single surface coated;

(7) Starting a No. 2 coating liquid tank centrifugal pump, spraying coating liquid B from the lower spraying hole at the flow rate of 25g/s, reversely allowing the single-side coated substrate prepared in the step (6) to enter the lower part of the lower spraying hole through a traction mesh belt, spraying the coating liquid B on the lower surface of the substrate uniformly, and drying the substrate in an oven at the temperature of 85 ℃ to obtain a double-side coated substrate;

(8) and (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

[ example 3 ]

The double-sided independent coating process for the reconstituted tobacco mainly comprises the following steps:

(1) Adding pure water 6.5 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 78.5 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) Pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 35% to obtain a concentrated solution;

(4) and (3) metering the concentrated solution obtained in the step (3) by using an online flowmeter, wherein the ratio of the concentrated solution to the concentrated solution is as follows: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding 9% of essence A (independently prepared caramel essence) by weight of the concentrated solution into the No. 1 coating liquid tank, adding 12% of essence B (independently prepared bean-flavor essence) by weight of the concentrated solution into the No. 2 coating liquid tank, and stirring and mixing uniformly to obtain coating liquid A and coating liquid B for later use;

(6) Starting a No. 1 coating liquid tank centrifugal pump, enabling coating liquid A to be sprayed out from the upper row of spraying holes at the flow rate of 65g/s, enabling the substrate prepared in the step (2) to enter the lower portion of the upper row of spraying holes through a traction mesh belt, enabling the coating liquid A to be uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 100 ℃ to obtain the substrate with a single surface coated;

(7) starting a No. 2 coating liquid tank centrifugal pump, so that coating liquid B is sprayed out from the lower row of spraying holes at the flow rate of 45g/s, meanwhile, the single-side coated substrate prepared in the step (6) reversely enters the lower row of spraying holes through a traction mesh belt, the coating liquid B is uniformly sprayed on the lower surface of the substrate, and the coating liquid B is dried in an oven at the temperature of 92 ℃ to obtain a double-side coated substrate;

(8) And (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

[ example 4 ]

the double-sided independent coating process for the reconstituted tobacco mainly comprises the following steps:

(1) adding pure water 6 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 76 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 42% to obtain a concentrated solution;

(4) and (3) metering the concentrated solution obtained in the step (3) by using an online flowmeter, wherein the ratio of the concentrated solution to the concentrated solution is as follows: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding 30% of essence A (independently prepared caramel essence) by weight of the concentrated solution into the No. 1 coating liquid tank, adding 0.5% of essence B (independently prepared bean-flavor essence) by weight of the concentrated solution into the No. 2 coating liquid tank, and stirring and mixing uniformly to obtain coating liquid A and coating liquid B for later use;

(6) starting a No. 1 coating liquid tank centrifugal pump, enabling coating liquid A to be sprayed out from the upper row of spraying holes at the flow rate of 65g/s, enabling the substrate prepared in the step (2) to enter the lower portion of the upper row of spraying holes through a traction mesh belt, enabling the coating liquid A to be uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 102 ℃ to obtain the substrate with a single surface coated;

(7) Starting a No. 2 coating liquid tank centrifugal pump, spraying coating liquid B from the lower spraying hole at the flow rate of 40g/s, reversely allowing the single-side coated substrate prepared in the step (6) to enter the lower part of the lower spraying hole through a traction mesh belt, uniformly spraying the coating liquid B on the lower surface of the substrate, and drying the substrate in an oven at the temperature of 87 ℃ to obtain a double-side coated substrate;

(8) and (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

[ example 5 ]

the double-sided independent coating process for the reconstituted tobacco mainly comprises the following steps:

(1) adding pure water 8 times of the weight of the tobacco raw material into the tobacco raw material, uniformly mixing, extracting for 1h at 80 ℃, and after extraction is finished, carrying out solid-liquid separation to obtain insoluble substances and an extracting solution;

(2) Pulping, papermaking and dehydrating the insoluble substance obtained in the step (1) to prepare a substrate;

(3) filtering the extracting solution obtained in the step (1), and concentrating under reduced pressure until the solid content reaches 41% to obtain a concentrated solution;

(4) And (3) metering the concentrated solution obtained in the step (3) by using an online flowmeter, wherein the ratio of the concentrated solution to the concentrated solution is as follows: 2, respectively conveying the mixture to a No. 1 coating liquid tank and a No. 2 coating liquid tank in a weight ratio;

(5) adding essence A (independently prepared caramel sweet flavor) accounting for 25% of the weight of the concentrated solution into the No. 1 coating liquid tank, adding essence B (independently prepared bean-flavor) accounting for 3% of the weight of the concentrated solution into the No. 2 coating liquid tank, and stirring and mixing uniformly to obtain coating liquid A and coating liquid B respectively;

(6) and (3) starting the No. 1 coating liquid tank centrifugal pump to enable the coating liquid A to be sprayed out from the upper row of spraying holes at the flow rate of 40g/s, meanwhile, enabling the substrate prepared in the step (2) to enter the lower part of the upper row of spraying holes through a traction mesh belt to enable the coating liquid A to be uniformly sprayed on the upper surface of the substrate, and drying the substrate in an oven at the temperature of 98 ℃ to obtain the substrate with a single-side coating.

(7) and (3) starting the No. 2 coating liquid tank centrifugal pump to enable the coating liquid B to be sprayed out from the lower spraying holes at the flow rate of 27g/s, enabling the single-side coated substrate prepared in the step (6) to reversely enter the lower spraying holes through the traction mesh belt, enabling the coating liquid B to be uniformly sprayed on the lower surface of the substrate, and drying the substrate in an oven at the temperature of 85 ℃ to obtain the double-side coated substrate.

(8) and (4) slicing the double-sided coated substrate obtained in the step (7), and adjusting the moisture content to prepare a finished reconstituted tobacco product.

the reconstituted tobacco finished products prepared in the above examples 1 to 5 are rolled into cigarettes, and the reconstituted tobacco cigarettes with the same coating liquid on both sides are used as reference products: the reconstituted tobacco cigarettes coated with the coating liquid A on the same two sides in the example 1 are used as a reference product 1-1, the reconstituted tobacco cigarettes coated with the coating liquid B on the same two sides in the example 1 are used as a reference product 1-2, the reconstituted tobacco cigarettes coated with the coating liquid A on the same two sides in the example 2 are used as a reference product 2-1, the reconstituted tobacco cigarettes coated with the coating liquid B on the same two sides in the example 2 are used as a reference product 2-2, and the like. And 7 smoking evaluators were selected for smoking evaluators. The specific smoking result is shown in a comparison table of reconstituted tobacco smoking results, and is shown in the following table 1:

TABLE 1

In Table 1, the better the fragrance, the higher the score, the full score of 15; the more rich the smoke flavor, the higher the score, the full score is 25; the less the miscellaneous gas, the higher the score, the full score of 15; the lighter the burning sensation is, the higher the score is, the full score is 15; the smaller the dry sensation, the higher the score, and the full score of 15; the lighter the residue, the higher the score, the full score of 15, and the total full score of 100.

according to the evaluation results, the five kinds of reconstituted tobacco prepared by the process can increase the herbal fragrance of the tobacco, improve the fragrance quality, endow the reconstituted tobacco with different fragrance styles and improve the application effect of the reconstituted tobacco.