CN111588072B - Manufacturing method of paper-making reconstituted tobacco with high bulk and high air permeability - Google Patents
Manufacturing method of paper-making reconstituted tobacco with high bulk and high air permeability Download PDFInfo
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- CN111588072B CN111588072B CN202010469245.4A CN202010469245A CN111588072B CN 111588072 B CN111588072 B CN 111588072B CN 202010469245 A CN202010469245 A CN 202010469245A CN 111588072 B CN111588072 B CN 111588072B
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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
- A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
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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
Abstract
The invention provides a method for manufacturing reconstituted tobacco with a paper-making method, which is characterized by comprising the following steps: (1) respectively adding water into the tobacco raw materials for extraction; (2) and (3) performing solid-liquid separation on the extracted slurry by a double-screw pulp extruder, a high-concentration disc mill and a single-screw squeezer respectively, mixing the solid-phase slurry, feeding the mixed solid-phase slurry into the medium-concentration disc mill, and feeding the mixed solid-phase slurry into a slurry pool for later use: (3) preparing a reconstituted tobacco coating liquid by the steps of removing impurities, concentrating, alcoholizing and feeding the collected liquid phase extract after extraction; (4) after the medium-concentration disc grinding in the step (2), the solid-phase slurry entering the slurry pool passes through a fine grinding machine and then enters a high-concentration slurry stabilizing box, a filler is added in the process, and finally the solid-phase slurry enters a pulp flowing box for forming, and then the solid-phase slurry enters two-stage pressing and papermaking to obtain a reconstituted tobacco substrate; (5) coating the coating liquid in the step (3) on a reconstituted tobacco substrate according to a proportion (calculated according to absolute dry slurry), and preparing a reconstituted tobacco finished product through drying in an oven, perfuming in a drying cylinder, slicing and the like; the dosage of the coating liquid is 37.5 +/-1% (to the dosage of an oven-dried finished product); the ration of the finished product of the coated reconstituted tobacco is 100 +/-5 g/m2Bulk greater than 2.35cm3(ii)/g, air permeability is more than 400 ℃.
Description
Technical Field
The invention belongs to the technical field of a manufacturing method of paper-making reconstituted tobacco, and provides a simple and feasible manufacturing method of paper-making reconstituted tobacco with high bulk and high air permeability.
Background
The paper-making method reconstituted tobacco uses waste tobacco stems, tobacco powder, fragments and other tobacco substances as raw materials, and is prepared into a sheet-shaped or filiform regenerated product through the processes of leaching, concentration, pulping, papermaking, coating, drying, slitting, packaging and the like, and the regenerated product is one of important raw materials of cigarettes. At present, the use proportion and the use range of the paper-making reconstituted tobacco on cigarettes are greatly improved, and the paper-making reconstituted tobacco can reduce the release amount of harmful components such as tar in the cigarettes to a certain extent and improve the economic benefit of the cigarettes.
The bulk is one of important indexes for evaluating the quality of the reconstituted tobacco by the paper-making process, and directly influences the liquid absorption amount and the coating uniformity when the reconstituted tobacco substrate is coated. The reconstituted tobacco with higher bulk can stabilize the burning rate, promote the sufficient burning and simultaneously improve the smoking quality.
The method for improving the bulk of the paper-making reconstituted tobacco currently reported comprises the following steps: chinese patent (application No. 20121020291.9) discloses a method for increasing the bulk of reconstituted tobacco, which increases the bulk of reconstituted tobacco by adding a certain amount of additive into tobacco pulp section, but the additive has longer treatment time and higher cost, and is not easy to be produced and used in large scale. Chinese patent (application number: 201210300478.7) discloses a method for increasing the bulk of paper-making reconstituted tobacco by adopting sodium bicarbonate, acetic acid and sodium bicarbonate are added into a pre-papermaking pond, during drying, the sodium bicarbonate is decomposed, so that the bulk of the reconstituted tobacco is increased, although the method can increase the bulk of the reconstituted tobacco to a certain extent, a large amount of sodium bicarbonate enters a sewage system, and the addition of the sodium bicarbonate has certain influence on the suction quality of the reconstituted tobacco. Chinese patent (application number: 201310060867.1) discloses a pulping process for paper-making tobacco sheets, which adopts three sections of light-knife flexible pulping, at least two pulping machines in each section, and gradually reduces pulp concentration and controls pulp circulation process to improve the bulk of reconstituted tobacco. Chinese patent (application number: 201510071440.0) discloses a preparation method of reconstituted tobacco by a high-bulk papermaking method, which is characterized in that the bulk of the reconstituted tobacco is improved by adding extra fibers of stem of allium mongolicum regel, and although the method can improve the bulk of the reconstituted tobacco to a certain extent, the fibers of the stem of the allium mongolicum regel are not produced in a large scale and are difficult to use in a large scale.
Disclosure of Invention
The invention aims to provide a manufacturing method which is simple and feasible and can improve the indexes of bulk and air permeability of reconstituted tobacco, and is used for improving the sensory quality of the conventional reconstituted tobacco.
In order to achieve the purpose, the invention adopts the following technical scheme:
the manufacturing method of the paper-making reconstituted tobacco with high bulk and high air permeability is characterized by comprising the following steps:
(1) respectively adding water into the tobacco raw materials for extraction;
(2) and (3) performing solid-liquid separation on the extracted slurry by a double-screw pulp extruder, a high-concentration disc mill and a single-screw squeezer respectively, mixing the solid-phase slurry, feeding the mixed solid-phase slurry into the medium-concentration disc mill, and feeding the mixed solid-phase slurry into a slurry pool for later use:
the extracted pulp is divided into tobacco powder and tobacco stem pulp, the tobacco powder pulp is subjected to solid-liquid separation through a single-screw squeezer and enters a medium-consistency disc mill for mixing and pulping; performing solid-liquid separation on tobacco stem pulp by a double-screw pulp extruder, a high-concentration disc mill and a single-screw squeezer, performing mixed pulping in a medium-concentration disc mill, and controlling the wet weight of pulp, wherein the wet weight of the pulp is the mixed pulping wet weight of tobacco stem and tobacco powder, the comprehensive pulping degree is 20-25 DEG SR, and the wet weight is 5.0-5.6 g;
(3) preparing a reconstituted tobacco coating liquid by the steps of removing impurities, concentrating, alcoholizing and feeding the collected liquid phase extract after extraction;
(4) after the medium-concentration disc grinding in the step (2), the solid-phase slurry entering the slurry pool passes through a fine grinding machine and then enters a high-concentration slurry stabilizing box, a filler is added in the process, and finally the solid-phase slurry enters a pulp flowing box for forming, and then the solid-phase slurry enters two-stage pressing and papermaking to obtain a reconstituted tobacco substrate;
the solid-phase slurry is 50% of tobacco stem and tobacco powder respectively; the solid-phase slurry entering the slurry pool after the medium-concentration disc mill is tobacco powder and tobacco stem mixed slurry, the beating degree is 20-25 DEG SR, and the wet weight is 5.0-5.6 g; the beating degree of the mixed slurry after the fine pulping machine is 25-300SR wet weight is 5.0-5.6 g; the auxiliary material is calcium carbonate; the range of the inlet particle size is 2-4 mu m; the dosage of the auxiliary materials to the oven-dried finished product is as follows: the addition amount is 4-17%; the mesh forming speed is 100-135 m/min; the first pressing line pressure of the papermaking is 0-0.3 Mpa, and the second pressing line pressure is 0.15-0.4 Mpa; the basis weight of the reconstituted tobacco substrate is 60 +/-5 g/m2；
(5) Coating the coating liquid in the step (3) on a reconstituted tobacco substrate according to a proportion (calculated according to absolute dry slurry), and preparing a reconstituted tobacco finished product through drying in an oven, perfuming in a drying cylinder, slicing and the like;
the dosage of the coating liquid is 37.5 +/-1% (to the dosage of an oven-dried finished product); the ration of the finished product of the coated reconstituted tobacco is 100 +/-5 g/m2Bulk greater than 2.35cm3The air permeability is more than 400C.
In some embodiments, the tobacco material is tobacco stems, tobacco dust, tobacco shreds, or tobacco ash provided by threshing and redrying plants and cigarette plants.
In some embodiments, in step (4), the wet weight of the slurry is controlled to be 5.4 to 5.6 g.
In some embodiments, in step (4), the supplementary material calcium carbonate is added in an amount of 8.5%.
In some embodiments, in the step 4), the prepared slurry is fed into a head box through a sluicing pump to be on the net, the net-feeding flow rate is adjusted, and the quantitative proportion of the substrate before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; the wet paper leaves out of the net part and enters two squeezing processes, wherein the first pressing line pressure is 0.15Mpa, and the second pressing line pressure is 0.3 Mpa; and (4) drying the squeezed wet paper in a drying part to obtain the base sheet.
In some embodiments, the method is implemented by: leaching in step (1): respectively extracting tobacco raw materials such as tobacco stems, tobacco powder and the like with water according to a ratio of 50:50 at 70 ℃ for 30 min; pulping in step (2): carrying out solid-liquid separation on the extracted tobacco stalk slurry through a double-screw pulp extruder, a high-concentration disc mill, a single-screw squeezer and the like, and mixing and pulping the tobacco stalk slurry in a medium-concentration disc mill; carrying out solid-liquid separation on the tobacco powder pulp slurry after extraction through a single screw press and the like, and mixing and pulping in a medium-consistency disc mill; controlling the wet weight of the pulp to be 5.4-5.6g and the beating degree to be 20-25 DEG SR; after medium-concentration disc grinding, 8.5 percent of calcium carbonate filler is added; then enters a pulp pool for standby after passing through a fine pulping machine; and (3) concentrating: preparing the reconstituted tobacco coating liquid by the collected liquid phase extract after extraction through the steps of impurity removal, concentration, alcoholization, material addition and the like; step (4), manufacturing paper: the prepared slurry is sent into a pulp flowing box by a pulp washing pump to be netted, the flow rate of netted pulp is adjusted, and the ration of a base sheet before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; the wet paper leaves out of the net part and enters two squeezing processes, wherein the first pressing line pressure is 0.15Mpa, and the second pressing line pressure is 0.3 Mpa; drying the squeezed wet paper in a drying part to obtain a base sheet; step (5) coating: coating with a coating machine, wherein the coating rate is controlled to be 37.5 +/-1%; and (6) drying, slitting and packaging: drying the coated substrate in a drying tunnel, slitting by using a slitting machine, and packaging after slitting to obtain a high-bulk and high-permeability reconstituted tobacco product by a papermaking method; the present inventors have unexpectedly found that the final product basis weight obtained by this particular process is 97.1m20.235mm in thickness and 2.42cm in bulk3Per g, air permeability of 464.7.
The invention obtains the reconstituted tobacco by the high-bulk papermaking method by optimizing pulping (wet weight of pulp) and papermaking process (pressure of a pressing line), and has the advantages that: based on the normal reconstituted tobacco production process, the key process parameters such as 'wet weight of pulp, papermaking process' and the like are optimized to obtain the reconstituted tobacco with the bulk of more than 2.35cm3(g) reconstituted tobacco with air permeability of more than 400C,
the product obtained by the method is soft, uniform in color and luster, good in concentration of the reconstituted tobacco with high bulk, small in irritation, offensive odor and oral cavity residue, and obviously improved in quality adaptability to cigarette leaf groups.
The method is simple, effective, practical and suitable for large-scale production.
Drawings
Fig. 1 is a process flow of a manufacturing method according to an embodiment.
Detailed Description
The present invention is further described in detail by the following examples, which are not intended to limit the present invention.
Comparative example
1. Leaching: adding water into tobacco raw materials such as tobacco stems, tobacco powder and the like according to a ratio of 50:50 for extraction at 70 ℃ for 30 min.
2. Pulping: carrying out solid-liquid separation on the extracted tobacco stalk slurry through a double-screw pulp extruder, a high-concentration disc mill, a single-screw squeezer and the like, and mixing and pulping the tobacco stalk slurry in a medium-concentration disc mill; carrying out solid-liquid separation on the tobacco powder pulp slurry after extraction through a single screw press and the like, and mixing and pulping in a medium-consistency disc mill; controlling the wet weight of the pulp to be 5.0-5.2g and the beating degree to be 20-25 DEG SR; after medium-concentration disc grinding, 8.5 percent of calcium carbonate filler is added; and then enters a pulp pool for standby after passing through a fine pulping machine.
3. Concentration: and (3) removing impurities from the collected liquid phase extract after extraction, concentrating, alcoholizing, charging and the like to prepare the reconstituted tobacco coating liquid.
4. Manufacturing paper: the prepared slurry is sent into a pulp flowing box by a pulp washing pump to be netted, the flow rate of netted is adjusted, and the ration of the substrate before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; the wet paper leaves after coming out of the net part and enters into a double pressPressing, wherein the pressure of a first pressing line is 0.3Mpa, and the pressure of a second pressing line is 0.4 Mpa; and (4) drying the squeezed wet paper after entering a drying part to obtain the base sheet.
5. Coating: the coating was carried out by a coater, and the coating rate was controlled to 37.5. + -. 1%.
6. Drying, slitting and packaging: and (4) drying the coated substrate in a drying channel, slitting by using a slitting machine, and packaging after slitting to obtain the paper-making reconstituted tobacco product.
TABLE 1 comparative sample physical index test results
Example 1
1. Leaching: adding water into tobacco raw materials such as tobacco stems, tobacco powder and the like according to a ratio of 50:50 for extraction at 70 ℃ for 30 min.
2. Pulping: carrying out solid-liquid separation on the extracted tobacco stalk slurry through a double-screw pulp extruder, a high-concentration disc mill, a single-screw squeezer and the like, and mixing and pulping the tobacco stalk slurry in a medium-concentration disc mill; carrying out solid-liquid separation on the tobacco powder pulp slurry after extraction through a single screw press and the like, and mixing and pulping in a medium-consistency disc mill; controlling the wet weight of the pulp to be 5.4-5.6g and the beating degree to be 20-25 DEG SR; after medium-concentration disc grinding, 8.5 percent of calcium carbonate filler is added; and then enters a pulp pool for standby after passing through a fine pulping machine.
3. Concentration: and (4) removing impurities from the collected liquid phase extract after extraction, concentrating, alcoholizing, adding materials and the like to prepare the reconstituted tobacco coating liquid.
4. Manufacturing paper: the prepared slurry is sent into a pulp flowing box by a pulp washing pump to be netted, the flow rate of netted is adjusted, and the ration of the substrate before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; the wet paper leaves out of the net part and enters two squeezing processes, wherein the first pressing line pressure is 0.3Mpa, and the second pressing line pressure is 0.4 Mpa; and (4) drying the squeezed wet paper after entering a drying part to obtain the base sheet.
5. Coating: the coating was carried out by a coater, and the coating rate was controlled to 37.5. + -. 1%.
6. Drying, slitting and packaging: and (3) drying the coated substrate in a drying channel, slitting by using a slitting machine, and packaging after slitting to obtain the paper-making reconstituted tobacco product with high bulk and high air permeability.
TABLE 2 results of physical index measurements of control samples and example 1
Example 2
1. Leaching: adding water into tobacco raw materials such as tobacco stems, tobacco powder and the like according to a ratio of 50:50 for extraction at 70 ℃ for 30 min.
2. Pulping: carrying out solid-liquid separation on the extracted tobacco stalk slurry through a double-screw pulp extruder, a high-concentration disc mill, a single-screw squeezer and the like, and mixing and pulping the tobacco stalk slurry in a medium-concentration disc mill; carrying out solid-liquid separation on the tobacco powder pulp slurry after extraction through a single screw press and the like, and mixing and pulping in a medium-consistency disc mill; controlling the wet weight of the slurry to be 5.4-5.6g, and the beating degree to be 20-25 DEG SR; after medium-concentration disc grinding, 8.5 percent of calcium carbonate filler is added; and then enters a pulp pool for standby after passing through a fine pulping machine.
3. Concentration: and (4) removing impurities from the collected liquid phase extract after extraction, concentrating, alcoholizing, adding materials and the like to prepare the reconstituted tobacco coating liquid.
4. Manufacturing paper: the prepared slurry is sent into a pulp flowing box by a pulp washing pump to be netted, the flow rate of netted is adjusted, and the ration of the substrate before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; the wet paper leaves out of the net part and enters two squeezing processes, wherein the first pressing line pressure is 0.15Mpa, and the second pressing line pressure is 0.3 Mpa; and (4) drying the squeezed wet paper after entering a drying part to obtain the base sheet.
5. Coating: coating was carried out with a coater, and the coating rate was controlled to 37.5. + -. 1%.
6. Drying, slitting and packaging: and (3) drying the coated substrate in a drying channel, slitting by using a slitting machine, and packaging after slitting to obtain the paper-making reconstituted tobacco product with high bulk and high air permeability.
TABLE 3 results of physical index measurements of control samples and example 2
Example 3
1. Leaching: adding water into tobacco raw materials such as tobacco stems, tobacco powder and the like according to a ratio of 50:50 for extraction at 70 ℃ for 30 min.
2. Pulping: carrying out solid-liquid separation on the extracted tobacco stalk slurry through a double-screw pulp extruder, a high-concentration disc mill, a single-screw squeezer and the like, and mixing and pulping the tobacco stalk slurry in a medium-concentration disc mill; carrying out solid-liquid separation on the tobacco powder pulp slurry after extraction through a single screw press and the like, and mixing and pulping in a medium-consistency disc mill; controlling the wet weight of the pulp to be 5.0-5.2g and the beating degree to be 20-25 DEG SR; after medium-concentration disc grinding, 8.5 percent of calcium carbonate filler is added; and then enters a pulp pool for standby after passing through a fine pulping machine.
3. Concentration: and (4) removing impurities from the collected liquid phase extract after extraction, concentrating, alcoholizing, adding materials and the like to prepare the reconstituted tobacco coating liquid.
4. Manufacturing paper: the prepared slurry is sent into a pulp flowing box by a pulp washing pump to be netted, the flow rate of netted is adjusted, and the ration of the substrate before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; after the wet paper leaves the net part, the wet paper enters two squeezing processes, wherein the first pressing line pressure is 0MPa, and the second pressing line pressure is 0.15 MPa; and (4) drying the squeezed wet paper after entering a drying part to obtain the base sheet.
5. Coating: the coating was carried out by a coater, and the coating rate was controlled to 37.5. + -. 1%.
6. Drying, slitting and packaging: and (3) drying the coated substrate in a drying channel, slitting by using a slitting machine, and packaging after slitting to obtain the paper-making reconstituted tobacco product with high bulk and high air permeability.
TABLE 4 results of physical index measurements of control samples and example 3
Evaluation of the effects:
the manufactured reconstituted tobacco of each embodiment is shredded and rolled into cigarettes. Sensory evaluation shows that the smoke concentration of the sample is better, and the irritation, the miscellaneous gas and the oral residue are smaller compared with the control sample.
Claims (4)
1. The manufacturing method of the paper-making reconstituted tobacco with high bulk and high air permeability is characterized by comprising the following steps:
(1) respectively adding water into the tobacco raw materials for extraction;
(2) the extracted slurry is respectively subjected to solid-liquid separation by a double-screw pulp extruder, a high-concentration disc mill and a single-screw squeezer, and the solid-phase slurry is mixed, enters the medium-concentration disc mill and then enters a slurry pool for standby:
the extracted pulp is divided into tobacco powder and tobacco stem pulp, the tobacco powder pulp is subjected to solid-liquid separation through a single-screw squeezer and enters a medium-consistency disc mill for mixing and pulping; performing solid-liquid separation on tobacco stem pulp by a double-screw pulp extruder, a high-concentration disc mill and a single-screw squeezer, performing mixed pulping in a medium-concentration disc mill, and controlling the wet weight of pulp, wherein the wet weight of the pulp is the mixed pulping wet weight of tobacco stem and tobacco powder, the comprehensive pulping degree is 20-25 DEG SR, and the wet weight is 5.4-5.6 g;
(3) preparing a reconstituted tobacco coating liquid by the steps of removing impurities, concentrating, alcoholizing and feeding the collected liquid phase extract after extraction;
(4) after the medium-concentration disc grinding in the step (2), the solid-phase slurry entering the slurry pool passes through a fine grinding machine and then enters a high-concentration slurry stabilizing box, auxiliary materials are added in the process, and finally the solid-phase slurry enters a pulp flowing box for forming, and then the solid-phase slurry enters two-stage pressing and papermaking to obtain a reconstituted tobacco substrate;
the solid-phase slurry is 50% of tobacco stem and tobacco powder respectively; the solid-phase slurry entering the slurry tank after the medium-concentration disc mill is tobacco powder and tobacco stem mixed slurry, the beating degree is 20-25 degrees SR, and the wet weight is 5.0-5.6 g; the beating degree of the mixed slurry after the fine pulping machine is 25-300SR wet weight is 5.4-5.6 g; the auxiliary material is calcium carbonate; the range of the inlet particle size is 2-4 mu m; the dosage of the auxiliary materials to the oven-dried finished product is as follows: the addition amount is 4% -17%; the speed of the mesh forming vehicle is 135 m/min; the pressure of one pressing line manufactured by the paper making machine is 0.15Mpa,the pressure of the second pressing line is 0.3 Mpa; the basis weight of the reconstituted tobacco substrate is 60 +/-5 g/m2；
(5) Coating the coating liquid in the step (3) on a reconstituted tobacco substrate in proportion, drying by an oven, perfuming by a drying cylinder, and finally slicing to prepare a reconstituted tobacco finished product;
the dosage of the coating liquid is 37.5 +/-1%.
2. The method of claim 1, wherein the tobacco material is tobacco stems, tobacco dust, tobacco shreds, or tobacco ash from threshing and redrying plants and cigarette plants.
3. The method according to claim 1, wherein in the step (4), the amount of calcium carbonate as an auxiliary material is 8.5%.
4. The method of manufacture of claim 1, wherein the method is carried out by:
leaching in step (1): adding water into tobacco stems and tobacco powder tobacco raw materials according to a ratio of 50:50 for extraction at 70 ℃ for 30 min;
pulping in step (2): carrying out solid-liquid separation on the extracted tobacco stalk slurry through a double-screw pulp extruder, a high-concentration disc mill and a single-screw squeezer, and mixing and pulping the tobacco stalk slurry in a medium-concentration disc mill; carrying out solid-liquid separation on the tobacco powder pulp slurry after extraction through a single screw press, and mixing and pulping in a medium-consistency disc mill; controlling the wet weight of the pulp to be 5.4-5.6g and the beating degree to be 20-25 DEG SR; after medium-concentration disc grinding, 8.5 percent of calcium carbonate filler is added; then enters a pulp pool for standby after passing through a fine pulping machine;
and (3) concentrating: preparing the reconstituted tobacco coating liquid by the steps of removing impurities, concentrating and alcoholizing the collected liquid phase extract after extraction;
step (4), manufacturing paper: the prepared slurry is sent into a pulp flowing box by a pulp washing pump to be netted, the flow rate of netted is adjusted, and the ration of the substrate before coating is controlled to be 60 +/-1 g/m2The network speed is controlled at 135 m/min; the wet paper leaves out of the net part and enters two presses with a press line pressure of 0.15Mpa, the pressure of the two pressing lines is 0.3 Mpa; drying the squeezed wet paper in a drying part to obtain a base sheet;
step (5) coating: coating with a coating machine, wherein the coating rate is controlled to be 37.5 +/-1%;
and (6) drying, slitting and packaging: and (3) drying the coated substrate in a drying channel, slitting by using a slitting machine, and packaging after slitting to obtain the paper-making reconstituted tobacco product with high bulk and high air permeability.
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