A forming method and forming equipment for ternary composite reconstituted tobacco sheets

Abstract

The present invention relates to a forming method and forming equipment of a ternary composite reconstructed tobacco sheet, which includes a primary coating composite device, a primary stripping conveying device, a secondary coating composite device and a secondary stripping conveying device. The method firstly coats a tobacco mixture on a first conveying surface by coating composite to form a strip-shaped pulp sheet, and then covers a fiber mesh substrate on the surface of the strip-shaped pulp sheet under a condition of low tension to form a strip-shaped binary composite reconstructed tobacco sheet; then coats the tobacco mixture on a second conveying surface, and covers the strip-shaped binary composite reconstructed tobacco sheet on the surface of the strip-shaped pulp sheet under a condition of low tension to form a ternary composite reconstructed tobacco sheet. The middle layer of the reconstructed tobacco sheet produced by the present invention is a prefabricated strip-shaped fiber mesh substrate, and the upper and lower layers are tobacco powder mixtures, which can improve the coating rate, improve the tobacco taste, improve the consistency of the finished product, improve the tensile strength, reduce the thickness, and enhance the processing resistance.

Description

Technical Field

[0001] The present invention relates to a molding method and molding equipment for composite reconstituted tobacco sheets, in particular to a molding method and molding equipment for processing a ternary composite reconstituted tobacco sheet with no strict boundaries between layers, mutual inclusion and mutual penetration. Background Art

[0002] In tobacco production enterprises, the existing reconstituted tobacco sheet production methods mainly include papermaking method, roller pressing method and thick slurry method, etc. At the same time, some enterprises have also conducted technical research on the production of reconstituted tobacco sheets by spraying method, roller coating method and blade coating method.

[0003] The papermaking method is to separate tobacco raw materials into tobacco solid fibers and water-soluble separation liquid through defiberization, soaking, pressing and separation; the separated tobacco solid fibers are mixed with wood pulp fibers, and a paper-like fiber web is initially formed through sheeting and drying equipment; the separated tobacco soluble separation liquid is formed into a tobacco soluble concentrate through reaction concentration and extraction equipment, and mixed with additives to form a coating liquid, and the coating liquid forms a "V"-shaped pulp pool on the coating machine; when the paper-like fiber web passes through the coating machine, the coating liquid soaks the paper-like fiber web and penetrates into the fiber web to form a strip of tobacco flakes, which are then dried. This method is suitable for large-scale production. Since tobacco raw materials need to be separated into tobacco solid fibers and water-soluble separation liquid, the production line needs to be equipped with separation and purification equipment such as defiberization, soaking, pressing, concentration and extraction. The processing technology is complicated and the equipment investment is large; the production process generates a large amount of wastewater, the wastewater treatment cost is high, and it is not environmentally friendly; some tobacco components are lost during the purification process, resulting in a light smoke taste.

[0004] The roller pressing method is to mix / knead tobacco powder, natural fiber, adhesive, water and other materials, generally into a mass, and then roll them into a strip of tobacco flakes through a roller, and then dry them. This method has low production capacity and small investment, and is not suitable for large-scale production. Since the fibers of the materials cannot be effectively arranged when the materials are rolled by roller pressing, and the fibers cannot form a network structure that is interconnected, it is necessary to rely more on adhesives to bond tobacco powder, natural fiber and ingredients together, resulting in poor strength of the strip of tobacco flakes rolled by roller pressing, poor tensile strength of the finished tobacco flakes, poor processing resistance, easy to break, easy to break, affecting the quality of the finished tobacco flakes, and at the same time, due to the limitations of the mixing (kneading) process, the addition ratio of natural fiber, adhesive and ingredients is limited, which also limits the application range of the finished roll-pressed flakes.

[0005] The thick slurry method is to mix tobacco powder, natural fiber, adhesive, water and ingredients into a paste-like thick slurry through a slurry mixing device. The material in this state has a certain fluidity and a moisture content of about 80%. Since the mixed material has a high moisture content and a certain fluidity, a steel belt needs to be used for drying. The tobacco slurry is smeared on the steel belt to form a strip of tobacco flakes, which enter the drying tunnel with the steel belt (annular thin steel plate) and are formed and dried in the form of pancakes. This method has a small investment and low production capacity and is not suitable for large-scale production. The tobacco slurry of this method forms a strip of tobacco flakes on the steel belt by smearing. The fibers of the material cannot be effectively arranged, and the fibers cannot form a network structure that is interconnected. Therefore, it is necessary to rely more on adhesives to bond tobacco powder, natural fibers and ingredients together. The randomness is relatively large, resulting in poor density of the finished product and poor uniformity of the thickness of the flakes. At the same time, due to the high moisture content of the tobacco slurry and the high surface temperature of the steel belt, bubbles will form, and the bursting of the bubbles will form holes on the flakes, affecting the quality of the finished product. In addition, the steel belt drying method is not conducive to the evaporation of moisture in the material, has low drying efficiency, limited production capacity, and high steam consumption.

[0006] The spraying method for producing reconstituted tobacco flakes is to spray the prepared tobacco slurry or particles on the surface of the prefabricated substrate through a nozzle, and then dry and shape them to produce reconstituted tobacco flakes. The spraying method for producing reconstituted tobacco flakes does not require high tensile strength and wet strength of the prefabricated substrate, and has high production efficiency. However, since the tobacco slurry or particles need to be sprayed and atomized by the nozzle, the particle size requirement is relatively high. In addition, due to the influence of the coverage range and distribution state of the nozzle, the sprayed tobacco slurry or particles are often distributed uniformly on the substrate surface, and the adhesion is not ideal, which affects the quality of the reconstituted tobacco flakes and the application scope of the back-end process.

[0007] The roll coating method is used to produce reconstituted tobacco flakes. The prepared tobacco slurry is rolled onto the surface of the prefabricated substrate through a coating roller, and then dried and shaped to produce reconstituted tobacco flakes. The roll coating method is used to produce reconstituted tobacco flakes, which has high production efficiency. When the tobacco slurry contacts the prefabricated substrate, the prefabricated substrate will be squeezed by the coating roller and the tobacco slurry. The prefabricated substrate absorbs water, resulting in a rapid decrease in strength, and the original physical properties of the substrate cannot be effectively maintained. Under the action of the extrusion force, the substrate will break and break. In order to ensure the strength and shape of the flakes, the prefabricated substrate must have high tensile strength and wet strength, which will result in a thick prefabricated substrate, a complex prefabrication process for the substrate, and high costs. The particularity of the prefabricated substrate often affects the taste of the reconstituted tobacco flakes, the quality of the reconstituted tobacco flakes, and the scope of application of the back-end process.

[0008] The blade coating method is used to produce reconstituted tobacco flakes. The prepared tobacco slurry is applied to the surface of the prefabricated substrate in a limited amount by a blade, and then dried and shaped to produce reconstituted tobacco flakes. The blade coating method is used to produce reconstituted tobacco flakes with high production efficiency. When the tobacco slurry contacts the prefabricated substrate, the prefabricated substrate will be squeezed by the blade and the tobacco slurry. Since the prefabricated substrate absorbs water, the strength decreases rapidly, and the original characteristics of the substrate cannot be effectively maintained. Under the action of the squeezing force, the substrate breaks and is damaged. In order to ensure the strength and shape of the flakes, the prefabricated substrate needs to have high tensile strength and wet strength, which will result in a thick prefabricated substrate, a complex prefabrication process for the substrate, high cost, low coating amount, uneven coating, and often affect the taste of the reconstituted tobacco flakes, affecting the quality of the reconstituted tobacco flakes and the scope of application of the back-end process.

[0009] The above-mentioned production methods of reconstituted tobacco sheets have been promoted and applied to varying degrees. However, in actual application, there are usually many deficiencies to varying degrees, such as insufficient tobacco flavor, poor consistency of finished products, low tensile strength, poor processing resistance, low production capacity, large equipment investment, low production efficiency, and high cost of three wastes treatment. Summary of the invention

[0010] In order to solve the above technical problems, the present invention proposes a forming method and forming equipment for a ternary composite reconstituted tobacco sheet. The technical solution of the present invention is as follows:

[0011] A forming method of a ternary composite reconstructed tobacco sheet, which adopts a ternary composite method, firstly applies a tobacco mixture on a first conveying surface to form a strip-shaped pulp sheet, and then covers and kneads a strip-shaped fiber web substrate on the surface of the strip-shaped pulp sheet under a condition of low tension, and undergoes a first composite drying to form a strip-shaped binary composite reconstructed tobacco sheet. Then, the tobacco mixture is applied on a second conveying surface to form a strip-shaped pulp sheet, and then covers and kneads a strip-shaped binary composite reconstructed tobacco sheet on the surface of the strip-shaped pulp sheet under a condition of low tension, and undergoes a second composite drying to form an integral ternary composite reconstructed tobacco sheet with no strict boundaries between layers, mutual inclusion, and mutual penetration.

[0012] The ternary composite reconstituted tobacco sheet forming method of the present invention may specifically include the following steps:

[0013] Step 1: crushing tobacco raw materials into tobacco powder of 100-300 meshes, mixing tobacco powder, adhesive, flavoring (additive), water, etc. into a paste-like thick slurry containing 60%-90% water;

[0014] Step 2: Apply the paste-like thick slurry prepared in step 1 on the first conveying surface to form a strip-shaped slurry sheet with uniform thickness;

[0015] Step 3: Covering and kneading the prefabricated strip-shaped fiber web substrate on the surface of the strip-shaped pulp sheet prepared in step 2 under a tension of no more than 1 N / m to form a strip-shaped binary composite reconstituted tobacco sheet wet sheet;

[0016] Step 4: drying the strip-shaped binary composite reconstituted tobacco sheet wet sheet prepared in step 3 to prepare a strip-shaped binary composite reconstituted tobacco sheet;

[0017] Step 5: Spread the paste-like thick slurry prepared in step 1 on the second conveying surface to form a strip-shaped slurry sheet with uniform thickness;

[0018] Step 6: the strip-shaped binary composite reconstituted tobacco sheet prepared in step 4 is covered and kneaded on the surface of the strip-shaped pulp sheet prepared in step 5 under a tension of no more than 1 N / m to form a strip-shaped ternary composite reconstituted tobacco sheet wet sheet;

[0019] Step 7: Drying the strip-shaped ternary composite reconstituted tobacco sheet wet sheet prepared in step 6 to prepare a ternary composite reconstituted tobacco sheet.

[0020] The method of the present invention can produce ternary composite reconstructed tobacco sheets / binary composite reconstructed tobacco sheets / multi-composite reconstructed tobacco sheets as required, and the produced reconstructed tobacco sheets can be uniform or different in width and length directions.

[0021] According to the method of the present invention, the forming device of the reconstituted tobacco sheet of the present invention is specifically:

[0022] A forming device for a ternary composite reconstituted tobacco sheet comprises, in order of material flow direction, a primary coating composite device, a primary stripping and conveying device, a secondary coating composite device, and a secondary stripping and conveying device.

[0023] The one-time coating and compounding device includes a first conveying device, a first coating device, a first transmission device, a first coating and kneading device arranged on the upper right side of the first conveying device, and a first drying device arranged in the middle section of the first conveying device.

[0024] The first transmission device on the upper right of the first conveying device is used to transmit the belt-shaped fiber web substrate that can be compounded with the belt-shaped pulp sheet. The speed of the first transmission device matches the speed of the first conveying device. Under the covering and kneading action of the first covering and kneading device, the belt-shaped fiber web substrate can be under the condition of tension not greater than 1N / m when the belt-shaped fiber web substrate is covered and kneaded with the belt-shaped pulp sheet.

[0025] The first coating device on the upper right of the first conveying device is used to contain the first slurry formed by uniformly mixing the tobacco powder mixture, adhesive, flavor (additive) material and water. The first coating device can contain the uniformly mixed first slurry and is equipped with a coating head and a limited coating function. The first slurry can be coated on the conveying belt surface of the first conveying device in a fixed width and quantity according to the conveying line speed of the first conveying device to form a strip-shaped slurry sheet with uniform thickness.

[0026] The first coating and kneading device on the left side of the first coating device has the function of coating and kneading the strip-shaped pulp sheet and the strip-shaped fiber web substrate. The coating and kneading methods include but are not limited to pressing, kneading, etc.

[0027] The first conveying device is used to convey the first slurry from the first coating device through the coating head to form a strip-shaped slurry sheet. The first conveying device can carry the strip-shaped slurry sheet to move, and cover and knead it with the strip-shaped fiber web substrate at the first covering and kneading device to form a strip-shaped binary composite reconstituted tobacco sheet wet sheet. The first conveying device can be a cylindrical conveying device or a belt-shaped conveying device and other material conveying devices that can be circulated repeatedly. The return section of the first conveying device has a cleaning function, and the cleaning methods include but are not limited to scraper cleaning, spray cleaning, blowing cleaning, etc. The return section of the first conveying device has a function of brushing grease on the conveyor belt surface, and the brushing methods include but are not limited to brushing, spraying, etc.

[0028] The first drying device at the middle section of the first conveying device is used to dry the belt-shaped dual composite reconstituted tobacco sheet wet sheet formed by kneading the upper layer of the belt-shaped fiber web substrate and the lower layer of the belt-shaped pulp sheet. The drying methods of the first drying device include but are not limited to airflow drying, quartz tube radiation drying, contact heat transfer drying, etc.

[0029] The first conveying device carries the belt-shaped binary composite reconstituted tobacco sheet wet sheet through the first drying device, and the first drying device dries and shapes the belt-shaped binary composite reconstituted tobacco sheet wet sheet to form a primary belt-shaped binary composite reconstituted tobacco sheet.

[0030] During the drying and shaping process of the strip-shaped binary composite reconstituted tobacco sheet wet sheet through the first drying device, the coating liquid prepared by leaf paste and stem paste, flavoring (additional) materials, etc. can be added to the strip-shaped binary composite reconstituted tobacco sheet wet sheet again.

[0031] Before the strip-shaped pulp sheet is compounded with the strip-shaped fiber web substrate, tobacco powder, seasoning powder and adhesive can be sprayed on the upper surface of the strip-shaped pulp sheet.

[0032] The primary stripping and conveying device is arranged below the primary coating and compounding device, and comprises a first stripping device and a conveying device arranged behind the first stripping device.

[0033] The first stripping device has a stripping and transfer function. The dried band-shaped dual-component composite reconstituted tobacco sheet is stripped from the conveyor belt surface of the first conveying device and transferred to the conveying device under the stripping action of the first stripping device and transported to the right.

[0034] The conveyor head end can convey the primary strip-shaped two-component composite reconstituted tobacco sheet product peeled and transferred from the first conveyor by the first peeling device. At the rear end of the conveyor, the conveyor conveys and transfers the primary strip-shaped two-component composite reconstituted tobacco sheet product to the second covering and kneading device.

[0035] The secondary coating composite device is arranged behind the primary stripping conveying device, and the secondary coating composite device includes a second conveying device, a second coating device and a second covering kneading device arranged at the upper left of the second conveying device, and a second drying device arranged in the middle section of the second conveying device.

[0036] The second conveying device below the conveying device is used to convey the strip-shaped pulp sheet and the strip-shaped ternary composite reconstructed tobacco sheet wet sheet. Its speed matches that of the conveying device. Under the covering and kneading action of the second covering and kneading device, the strip-shaped binary composite reconstructed tobacco sheet pre-product can be covered and kneaded with the strip-shaped pulp sheet, and the binary composite reconstructed tobacco sheet pre-product is under the condition of tension not greater than 1N / m.

[0037] The second coating device on the upper left of the second conveying device is used to accommodate the second slurry formed by uniformly mixing the tobacco powder mixture, adhesive, flavor (additive) material and water. The second coating device can accommodate the uniformly mixed second slurry and is equipped with a coating head and a limited coating function. The second slurry can be coated on the conveying belt surface of the second conveying device in a fixed width and quantity according to the conveying line speed of the second conveying device to form a strip-shaped slurry sheet with uniform thickness.

[0038] The second coating and kneading device on the right side of the second coating device has the function of coating and kneading the strip-shaped pulp sheet and the binary composite reconstituted tobacco sheet primary product. The coating and kneading methods include but are not limited to pressing, kneading, etc.

[0039] The second conveying device is used to convey the second slurry from the second coating device through the coating head to form a strip-shaped slurry sheet. The second conveying device can carry the strip-shaped slurry sheet to move, and cover and knead it with the binary composite reconstituted tobacco sheet primary product at the second covering and kneading device to form a strip-shaped ternary composite reconstituted tobacco sheet wet sheet. The second conveying device can be a cylindrical conveying device or a belt-shaped conveying device and other material conveying devices that can be circulated repeatedly. The return section of the second conveying device has a cleaning function, and the cleaning methods include but are not limited to scraper cleaning, spray cleaning, blowing cleaning, etc. The return section of the second conveying device has a function of brushing grease on the conveyor belt surface, and the brushing methods include but are not limited to brushing, spraying, etc.

[0040] The second drying device at the middle section of the second conveying device is used to dry the strip-shaped ternary composite reconstituted tobacco sheet wet sheet formed by kneading the upper layer of the primary product of the binary composite reconstituted tobacco sheet and the lower layer of the strip-shaped pulp sheet covered with cloth. The drying methods of the second drying device include but are not limited to airflow drying, quartz tube radiation drying, contact heat transfer drying, etc.

[0041] The second conveying device carries the belt-shaped ternary composite reconstituted tobacco sheet wet sheet and moves through the second drying device. The second drying device dries and shapes the belt-shaped ternary composite reconstituted tobacco sheet wet sheet to form a belt-shaped ternary composite reconstituted tobacco sheet.

[0042] During the drying and shaping process of the strip-shaped ternary composite reconstituted tobacco sheet wet sheet through the second drying device, the coating liquid prepared by leaf paste and stem paste, flavoring (additional) materials, etc. can be added to the strip-shaped ternary composite reconstituted tobacco sheet wet sheet again.

[0043] Before the strip-shaped pulp sheet is composited with the primary binary composite reconstituted tobacco sheet, tobacco powder, seasoning powder and adhesive can be sprayed on the surface of the strip-shaped pulp sheet.

[0044] The secondary stripping and conveying device is arranged below the secondary coating and compounding device. The secondary coating and compounding device comprises a second stripping device and a second conveying device arranged behind the second stripping device.

[0045] The second stripping device has the function of stripping and transferring tobacco sheets. The dried band-shaped ternary composite reconstituted tobacco sheets are stripped from the conveyor belt surface of the second conveying device and transferred to the second conveying device under the stripping action of the second stripping device and transported to the right.

[0046] Generally speaking, the present invention can grind tobacco raw materials into tobacco powder with a mesh size of 100 to 300, mix tobacco powder, adhesive, flavoring (additive), water and the like to prepare a paste-like thick slurry containing 60% to 90% of water; apply the prepared paste-like thick slurry on a first conveying surface to form a strip-like slurry sheet with uniform thickness; cover and knead the prefabricated strip-like fiber web substrate on the surface of the strip-like slurry sheet under a condition of low tension to form a strip-like binary composite reconstructed tobacco sheet wet sheet; dry the strip-like binary composite reconstructed tobacco sheet wet sheet to prepare a strip-like binary composite reconstructed tobacco sheet; The two-component composite reconstructed tobacco sheet is peeled off from the first conveying surface and conveyed to the second covering, kneading and coating process in the latter section; the prepared paste-like thick slurry is coated on the second conveying surface to form a strip-shaped slurry sheet with uniform thickness; the strip-shaped two-component composite reconstructed tobacco sheet is covered and kneaded on the surface of the strip-shaped slurry sheet on the second conveying surface under the condition of low tension to be compounded into a strip-shaped ternary composite reconstructed tobacco sheet wet sheet; the strip-shaped ternary composite reconstructed tobacco sheet wet sheet is dried to form a ternary composite reconstructed tobacco sheet; the ternary composite reconstructed tobacco sheet is peeled off from the second conveying surface and conveyed to the subsequent processing process.

[0047] The technical points of the method of the present invention are:

[0048] (1) Preparation of ribbon fiber web substrate

[0049] The natural fiber raw materials are defiberized and pulped, and then made into natural fiber sheets, which are then dried and dehydrated to form a ribbon fiber web substrate. The ribbon fiber web substrate can be sprayed facial tissue or a soft porous paper sheet similar to sprayed facial tissue, with a thickness of 0.05-0.15 mm, a moisture content of 5-13%, and a basis weight of 8-20 g / m 2 .

[0050] When the ribbon fiber web substrate is prefabricated, its tensile strength, processing resistance, and warp and weft directions are fully considered. When it is covered, kneaded, and compounded with the tobacco mixture, the mesh structure between the fibers can continue to be maintained, ensuring that it has good tensile strength, toughness, and processing resistance after covering, kneading, and compounding. The ribbon fiber web substrate can be prefabricated with tobacco plant fibers, non-tobacco plant fibers, non-plant fibers, or any combination of tobacco plant fibers and / or non-tobacco plant fibers and / or non-plant fibers.

[0051] The strip fiber web substrate can be a porous paper sheet without adding fragrance (additive) materials, or a porous paper sheet with fragrance (additive) materials added according to process requirements.

[0052] (2) Preparing the first tobacco slurry and the second tobacco slurry

[0053] The tobacco raw material is crushed into tobacco powder of 100-300 mesh tobacco particles, and the tobacco powder, adhesive, flavor (additive), water, etc. are mixed and stirred to form a thick slurry (or paste) containing 60% to 90% water. The first tobacco slurry and the second tobacco slurry can be made from tobacco raw materials with different or same ingredients, and the mixing ratios of the adhesive, flavor (additive), water, etc. can be different or the same.

[0054] The first tobacco slurry and the second tobacco slurry may also be added with tobacco substance extract concentrate in different proportions as required.

[0055] (3) Preparation of composite tobacco sheets

[0056] The first coating device is used to coat the prepared first tobacco pulp slurry on the surface of the first conveyor belt rotating counterclockwise at a set flow rate required by the process, with a coating thickness of 0.05 to 0.4 mm, to form a first strip-shaped slurry sheet with uniform thickness. The strip-shaped fiber web substrate is coated on the surface of the first strip-shaped slurry sheet and kneaded. When the first coating and kneading device is coating and kneading, the strip-shaped fiber web substrate is under a condition of low tension, which can effectively maintain the original integrity of the strip-shaped fiber web substrate without damage.

[0057] The binary composite reconstituted tobacco wet sheet composed of the strip-shaped fiber web substrate and the first strip-shaped pulp sheet is initially dried to form a primary strip-shaped binary composite reconstituted tobacco sheet with uniform thickness.

[0058] Before coating the first tobacco slurry on the conveyor belt surface of the first conveyor device, materials such as lecithin or tobacco powder can be coated on the conveyor belt surface to facilitate the stripping of the strip-shaped binary composite reconstituted tobacco sheet from the conveyor belt surface of the first conveyor device.

[0059] At the same time, the prepared second tobacco pulp slurry is coated on the surface of the second conveyor belt rotating clockwise according to the set flow rate required by the process, with a coating thickness of 0.05-0.4 mm to form a second strip-shaped slurry sheet with uniform thickness. The strip-shaped binary composite reconstituted tobacco sheet is coated on the surface of the second strip-shaped thin tobacco pulp strip-shaped slurry sheet and kneaded. When the second coating and kneading device is coating and kneading, the strip-shaped binary composite reconstituted tobacco sheet is under a condition of low tension, which can effectively maintain the original integrity of the strip-shaped fiber web substrate without damage.

[0060] The strip-shaped binary composite reconstructed tobacco sheet is composited with the first strip-shaped slurry sheet and the second strip-shaped slurry sheet to form a strip-shaped ternary composite reconstructed tobacco sheet with uniform thickness after secondary drying. The strip-shaped ternary composite reconstructed tobacco sheet has a thickness of 0.12-0.3 mm, a moisture content of 8-13%, and a basis weight of 80-250 g / m 2 .

[0061] Before coating the second tobacco slurry on the conveyor belt surface of the second conveyor device, materials such as lecithin or tobacco powder can be coated on the conveyor belt surface to facilitate the stripping of the band-shaped ternary composite reconstituted tobacco sheet from the conveyor belt surface of the second conveyor device.

[0062] The reconstituted tobacco sheet produced by the present invention is coated and compounded twice, wherein the middle layer is a prefabricated belt-shaped fiber web substrate, and the upper and lower layers are tobacco mixtures formed by uniformly mixing tobacco powder mixtures, adhesives, flavors (compounds), and water. The upper and lower layers can also be tobacco mixtures formed by uniformly mixing tobacco powder mixtures, adhesives, flavors (compounds), tobacco substance extract concentrates, and water.

[0063] The present invention combines tobacco powder mixture with band-shaped fiber net substrate sheet base, and under the condition that the original integrity of the band-shaped fiber net substrate is not damaged, the band-shaped fiber net substrate sheet base, as a skeleton, has good physical strength and toughness, and can effectively ensure the physical strength and toughness of the reconstructed tobacco sheet. The band-shaped fiber net substrate sheet base is covered with cloth under the condition that the tension in the reconstructed tobacco sheet forming link is small, and its wet strength does not need to be considered. Under the premise of ensuring the subsequent processing strength requirements of the tobacco sheet, the band-shaped fiber net substrate sheet base can be thinner, and other additives that reduce the water absorption speed or increase the wet strength are not needed. The influence of the substrate fiber on the taste of the reconstructed tobacco sheet can be minimized, and the miscellaneous taste is lighter, which is conducive to improving the quality of the reconstructed tobacco sheet and expanding the scope of application. The band-shaped fiber net substrate can be prefabricated with tobacco plant fiber, can also be prefabricated with non-tobacco plant fiber, can also be prefabricated with non-plant fiber, and can also be prefabricated with any combination of tobacco plant fiber and / or non-tobacco plant fiber and / or non-plant fiber.

[0064] The present invention is further extended to composite reconstituted tobacco sheets obtained by the above-mentioned forming device or forming method.

[0065] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0066] (1) The present invention greatly simplifies the processing technology, simplifies the existing tobacco sheet processing technology and equipment, can effectively improve production capacity, reduce equipment investment and processing costs of production enterprises, and save energy and protect the environment.

[0067] (2) The present invention combines tobacco particles with a ribbon-shaped fiber mesh substrate sheet, and the ribbon-shaped fiber mesh substrate sheet serves as a skeleton to ensure the physical strength and toughness of the reconstituted tobacco sheet. The ribbon-shaped fiber mesh substrate sheet is coated under the condition that the tension in the reconstituted tobacco sheet forming process is relatively small, and its wet strength does not need to be considered. Under the premise of ensuring the processing strength requirements of the tobacco sheet after drying, the ribbon-shaped fiber mesh substrate sheet can be thinner, and no other additives that reduce the water absorption rate or increase the wet strength need to be added. The influence of the substrate fiber on the taste of the reconstituted tobacco sheet can be minimized, and the odor is lighter, which is conducive to improving the quality of the reconstituted tobacco sheet and expanding the scope of application.

[0068] (3) The present invention can form an integral ternary composite reconstructed tobacco sheet with the strip-shaped fiber web substrate in the process of covering and kneading the slurry sheet and the strip-shaped fiber web substrate by covering, pressing, kneading, etc., without strict boundaries between layers, and with mutual inclusion and mutual penetration. The processing resistance of the reconstructed tobacco sheet is ensured, and the reconstructed tobacco sheet is not easy to break in subsequent processing links. The influence of the tobacco powder mixture on the physical strength and toughness of the reconstructed tobacco sheet can be minimized, which is conducive to widening the modulation ratio of the tobacco powder mixture and effectively improving the coating rate. The reconstructed tobacco sheet obtained has a stronger tobacco flavor and a lower content of artificially added non-tobacco substances, which is conducive to improving the quality of the reconstructed tobacco sheet and expanding the scope of application.

[0069] (4) The present invention adopts the limited coating function of the coating head, which can evenly coat the tobacco slurry on the conveying device to form a slurry sheet with uniform thickness, which has better uniformity, more accurate control of the coating amount, and more convenient adjustment. In addition, combined with the technology and manufacturing level of the existing coating machine, the coating width is wider, which is conducive to improving production capacity.

[0070] (5) The present invention can adopt various efficient and convenient drying methods such as contact heat transfer drying cylinder drying, tunnel hot air drying, quartz tube radiation drying, etc., which are relatively mature in existing paper machine drying equipment, to dry and shape the thin sheets, which can further increase the processing speed and production capacity, and is conducive to industrial promotion and application.

[0071] In summary, the present invention combines a tobacco powder mixture with a strip fiber mesh substrate sheet, and the physical strength and toughness of the reconstructed tobacco sheet are guaranteed by the strip fiber mesh substrate, which can minimize the influence of the tobacco powder mixture on the physical strength and toughness of the reconstructed tobacco sheet, which is conducive to broadening the modulation ratio of the tobacco powder mixture, and can effectively improve the coating rate, so that the obtained reconstructed tobacco sheet has a stronger tobacco flavor and a lower content of artificially added non-tobacco substances, which is conducive to improving the quality of the reconstructed tobacco sheet and expanding the scope of application. The present invention can effectively solve the problem of damage and deformation of the strip fiber mesh substrate during the production process of reconstructed tobacco sheets by the existing coating method when the tobacco slurry is combined with the strip fiber mesh substrate due to the large tension on the strip fiber mesh substrate, which is conducive to realizing industrial production and can simplify production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 is a flow chart of a method for forming a reconstituted tobacco sheet of the present invention;

[0073] Figure 2 is a schematic diagram of a forming apparatus for reconstituted tobacco sheets of the present invention;

[0074] Figure 3 is a schematic diagram of an embodiment of a forming device for reconstituted tobacco sheets of the present invention;

[0075] Figure 4 is a schematic diagram of another embodiment of a forming device for reconstituted tobacco sheets of the present invention;

[0076] In the figure:

[0077] A: primary coating and compounding device, B: primary peeling and conveying device, C: secondary coating and compounding device, D: secondary peeling and conveying device;

[0078] 1: first conveying device; 2: first transmission device; 3: strip-shaped pulp sheet; 4: strip-shaped fiber web substrate; 5: first coating device; 6: first pulp; 7: binary composite reconstituted tobacco sheet wet sheet; 8: first drying device; 9: first stripping device; 10: strip-shaped binary composite reconstituted tobacco sheet primary product; 11: conveying device; 12: first covering and kneading device; 20: second covering and kneading device; 21: second conveying device; 22: strip-shaped pulp sheet; 23: second coating device; 24: second pulp; 25: strip-shaped ternary composite reconstituted tobacco sheet wet sheet; 26: second drying device; 27: strip-shaped ternary composite reconstituted tobacco sheet; 28: second stripping device; 29: second conveying device; 31: third coating device; 32: fourth coating device; 33: first spraying device; 34: second spraying device. DETAILED DESCRIPTION

[0079] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only examples of some of the present invention, not all of them, and the scope of the present invention cannot be limited by them. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0080] like Figure 1 As shown, the ternary composite reconstituted tobacco sheet forming method of the present invention comprises the following steps:

[0081] Step 1: crushing tobacco raw materials into tobacco powder of 100-300 meshes, mixing tobacco powder, adhesive, flavoring (additive), water, etc. into a paste-like thick slurry containing 60%-90% water;

[0082] Step 2: Apply the paste-like thick slurry prepared in step 1 on the first conveying surface to form a strip-shaped slurry sheet with uniform thickness;

[0083] Step 3: Covering and kneading the prefabricated strip-shaped fiber web substrate on the surface of the strip-shaped pulp sheet prepared in step 2 under a tension of no more than 1 N / m to form a strip-shaped binary composite reconstituted tobacco sheet wet sheet;

[0084] Step 4: drying the strip-shaped binary composite reconstituted tobacco sheet wet sheet prepared in step 3 to prepare a strip-shaped binary composite reconstituted tobacco sheet;

[0085] Step 5: Spread the paste-like thick slurry prepared in step 1 on the second conveying surface to form a strip-shaped slurry sheet with uniform thickness;

[0086] Step 6: the strip-shaped binary composite reconstituted tobacco sheet prepared in step 4 is covered and kneaded on the surface of the strip-shaped pulp sheet prepared in step 5 under a tension of no more than 1 N / m to form a strip-shaped ternary composite reconstituted tobacco sheet wet sheet;

[0087] Step 7: Drying the strip-shaped ternary composite reconstituted tobacco sheet wet sheet prepared in step 6 to prepare a ternary composite reconstituted tobacco sheet.

[0088] The method of the present invention can produce ternary composite reconstructed tobacco sheets / binary composite reconstructed tobacco sheets / multi-composite reconstructed tobacco sheets as required, and the produced reconstructed tobacco sheets can be uniform or different in width and length directions.

[0089] Embodiments of the device of the present invention:

[0090] Example 1

[0091] like Figure 2 As shown, the ternary composite reconstituted tobacco sheet forming equipment of this embodiment includes a primary coating composite device A, a primary stripping and conveying device B, a secondary coating composite device C, and a secondary stripping and conveying device D which are sequentially arranged according to the ternary composite reconstituted tobacco sheet forming process.

[0092] The one-time coating composite device A includes a first conveying device 1 , a first coating device 5 , a first transmission device 2 and a first coating and kneading device 12 arranged on the upper right side of the first conveying device 1 , and a first drying device 8 arranged in the middle section of the first conveying device 1 .

[0093] The primary peeling and conveying device B is arranged below the primary coating and compounding device A. The primary peeling and conveying device B comprises a first peeling device 9 and a conveying device 11 arranged behind the first peeling device 9 .

[0094] The secondary coating composite device C is arranged at the right rear of the primary stripping and conveying device B. The secondary coating composite device C includes a second conveying device 21, a second coating device 23 and a second covering and kneading device 20 arranged at the upper left of the second conveying device 21, and a second drying device 26 arranged in the middle section of the second conveying device 21.

[0095] The secondary peeling and conveying device D is arranged at the right rear of the secondary coating and compounding device C. The secondary coating and compounding device C includes a second peeling device 28 and a second conveying device 29 arranged behind the second peeling device 28 .

[0096] The first slurry 6 is quantitatively coated on the conveyor belt surface of the first conveying device 1 by the coating head of the first coating device 5 to form a strip-shaped slurry sheet 3, and the strip-shaped slurry sheet 3 moves to the left along with the first conveying device 1; the strip-shaped fiber web substrate 4 conveyed by the first transmission device 2 is covered and contacted with the surface of the strip-shaped slurry sheet 3, and under the covering and kneading action of the first covering and kneading device 12, the strip-shaped fiber web substrate 4 is covered and kneaded with the strip-shaped slurry sheet 3 to form a binary composite reconstructed tobacco sheet wet sheet 7; the binary composite reconstructed tobacco sheet wet sheet 7 is preliminarily dried by the first drying device 8 to form a strip-shaped binary composite reconstructed tobacco sheet primary product 10.

[0097] The strip-shaped dual composite reconstituted tobacco sheet primary product 10 is conveyed by the first conveying device 1 to the first stripping device 9, and is stripped from the conveying belt surface of the first conveying device 1 by the stripping action of the first stripping device 9, transferred to the conveying device 11 and conveyed to the right.

[0098] The second slurry 24 is quantitatively coated on the conveyor belt surface of the second conveying device 21 by the coating head of the second coating device 23 to form a strip-shaped slurry sheet 22, and the strip-shaped slurry sheet 22 moves to the right along with the second conveying device 21; the strip-shaped binary composite reconstructed tobacco sheet primary product 10 conveyed by the conveying device 11 is covered and contacted with the surface of the strip-shaped slurry sheet 22, and under the covering and kneading action of the second covering and kneading device 20, the strip-shaped binary composite reconstructed tobacco sheet primary product 10 is covered and kneaded with the strip-shaped slurry sheet 22 to form a strip-shaped ternary composite reconstructed tobacco sheet wet sheet 25; the strip-shaped ternary composite reconstructed tobacco sheet wet sheet 25 is dried by the second drying device 26 to form a strip-shaped ternary composite reconstructed tobacco sheet 27.

[0099] The band-shaped three-component composite reconstituted tobacco sheet 27 is conveyed by the second conveying device 21 to the second stripping device 28, and is stripped from the conveying belt surface of the second conveying device 21 by the stripping action of the second stripping device 28, transferred to the second conveying device 29 and conveyed to the right.

[0100] Example 2

[0101] like Figure 3 As shown, the ternary composite reconstituted tobacco sheet forming equipment of this embodiment includes a primary coating composite device A, a primary stripping and conveying device B, a secondary coating composite device C, and a secondary stripping and conveying device D which are sequentially arranged according to the ternary composite reconstituted tobacco sheet forming process.

[0102] The single coating composite device A includes a first conveying device 1, a first coating device 5, a first transmission device 2 and a first coating kneading device 12 arranged on the upper right side of the first conveying device 1, a first drying device 8 arranged in the middle section of the first conveying device 1, and a third coating device 31 arranged in the middle section of the first drying device 8.

[0103] The primary peeling and conveying device B is arranged below the primary coating and compounding device A. The primary peeling and conveying device B comprises a first peeling device 9 and a conveying device 11 arranged behind the first peeling device 9 .

[0104] The secondary coating composite device C is arranged at the right rear of the primary stripping and conveying device B. The secondary coating composite device C includes a second conveying device 21, a second coating device 23 and a second covering and kneading device 20 arranged at the upper left of the second conveying device 21, a second drying device 26 arranged in the middle section of the second conveying device 21, and a fourth coating device 32 arranged in the middle section of the second drying device 26.

[0105] The secondary peeling and conveying device D is arranged at the right rear of the secondary coating and compounding device C. The secondary coating and compounding device C includes a second peeling device 28 and a second conveying device 29 arranged behind the second peeling device 28 .

[0106] The first slurry 6 is quantitatively coated on the conveyor belt surface of the first conveying device 1 by the coating head of the first coating device 5 to form a strip-shaped slurry sheet 3, and the strip-shaped slurry sheet 3 moves to the left with the first conveying device 1; the strip-shaped fiber web substrate 4 conveyed by the first transmission device 2 is covered and contacted with the surface of the strip-shaped slurry sheet 3, and under the covering and kneading action of the first covering and kneading device 12, the strip-shaped fiber web substrate 4 and the strip-shaped slurry sheet 3 are covered and kneaded to form a binary composite reconstructed tobacco sheet wet sheet 7; the binary composite reconstructed tobacco sheet wet sheet 7 is preliminarily dried by the first drying device 8, and the coating liquid prepared by the prepared leaf paste and stem paste, fragrance (additional) materials, etc. are coated on the surface of the binary composite reconstructed tobacco sheet wet sheet 7 by the third coating device 31, and after drying again, a strip-shaped binary composite reconstructed tobacco sheet primary product 10 is formed.

[0107] The strip-shaped dual composite reconstituted tobacco sheet primary product 10 is conveyed by the first conveying device 1 to the first stripping device 9, and is stripped from the conveying belt surface of the first conveying device 1 by the stripping action of the first stripping device 9, transferred to the conveying device 11 and conveyed to the right.

[0108] The second slurry 24 is quantitatively coated on the conveyor belt surface of the second conveying device 21 by the coating head of the second coating device 23 to form a strip-shaped slurry sheet 22, and the strip-shaped slurry sheet 22 moves to the right along with the second conveying device 21; the strip-shaped binary composite reconstructed tobacco sheet primary product 10 conveyed by the conveying device 11 is covered and contacted with the surface of the strip-shaped slurry sheet 22, and under the covering and kneading action of the second covering and kneading device 20, the strip-shaped binary composite reconstructed tobacco sheet primary product 10 is covered and kneaded with the strip-shaped slurry sheet 22 to form a strip-shaped ternary composite reconstructed tobacco sheet wet sheet 25; the strip-shaped ternary composite reconstructed tobacco sheet wet sheet 25 is preliminarily dried by the second drying device 26, and the coating liquid prepared by the prepared leaf paste and stem paste, the fragrance (mixing) material, etc. are coated on the surface of the ternary composite reconstructed tobacco sheet wet sheet 25 by the fourth coating device 32, and after drying again, a strip-shaped ternary composite reconstructed tobacco sheet 27 is formed.

[0109] The band-shaped three-component composite reconstituted tobacco sheet 27 is conveyed by the second conveying device 21 to the second stripping device 28, and is stripped from the conveying belt surface of the second conveying device 21 by the stripping action of the second stripping device 28, transferred to the second conveying device 29 and conveyed to the right.

[0110] Embodiment 2 adds a third coating device 31 and a fourth coating device 32 on the basis of embodiment 1. The coating liquid prepared from leaf paste and stem paste, flavoring (additional) materials, etc. are coated on the tobacco sheet through the third coating device 31 and the fourth coating device 32, which is beneficial to improving the smoking taste and quality of the tobacco sheet.

[0111] Example 3

[0112] like Figure 4 As shown, the ternary composite reconstituted tobacco sheet forming equipment of this embodiment includes a primary coating composite device A, a primary stripping and conveying device B, a secondary coating composite device C, and a secondary stripping and conveying device D which are sequentially arranged according to the ternary composite reconstituted tobacco sheet forming process.

[0113] The one-time coating composite device A comprises a first conveying device 1, a first coating device 5, a first transmission device 2 and a first coating kneading device 12 arranged at the upper right of the first conveying device 1, a first drying device 8 arranged at the middle section of the first conveying device 1, and a first spraying device 33 arranged at the left side of the first coating device 5;

[0114] The primary stripping and conveying device B is arranged below the primary coating and compounding device A, and the primary stripping and conveying device B comprises a first stripping device 9 and a conveying device 11 arranged behind the first stripping device 9;

[0115] The secondary coating composite device C is arranged at the right rear of the primary stripping and conveying device B. The secondary coating composite device C includes a second conveying device 21, a second coating device 23 and a second covering and kneading device 20 arranged at the upper left of the second conveying device 21, a second drying device 26 arranged in the middle section of the second conveying device 21, and a second spraying device 34 arranged on the right side of the second coating device 23.

[0116] The secondary peeling and conveying device D is arranged at the right rear of the secondary coating and compounding device C. The secondary coating and compounding device C includes a second peeling device 28 and a second conveying device 29 arranged behind the second peeling device 28 .

[0117] The first slurry 6 is quantitatively coated on the conveyor belt surface of the first conveying device 1 by the coating head of the first coating device 5 to form a strip-shaped slurry sheet 3. The first spraying device 33 sprays tobacco powder, seasoning powder and adhesive on the upper surface of the strip-shaped slurry sheet 3, and the strip-shaped slurry sheet 3 moves to the left along with the first conveying device 1; the strip-shaped fiber web substrate 4 conveyed by the first transmission device 2 is covered and contacted with the surface of the strip-shaped slurry sheet 3, and under the covering and kneading action of the first covering and kneading device 12, the strip-shaped fiber web substrate 4 is covered and kneaded with the strip-shaped slurry sheet 3 to form a binary composite reconstructed tobacco sheet wet sheet 7; the binary composite reconstructed tobacco sheet wet sheet 7 is preliminarily dried by the first drying device 8 to form a strip-shaped binary composite reconstructed tobacco sheet primary product 10.

[0118] The strip-shaped dual composite reconstituted tobacco sheet primary product 10 is conveyed by the first conveying device 1 to the first stripping device 9, and is stripped from the conveying belt surface of the first conveying device 1 by the stripping action of the first stripping device 9, transferred to the conveying device 11 and conveyed to the right.

[0119] The second slurry 24 is quantitatively coated on the conveyor belt surface of the second conveying device 21 by the coating head of the second coating device 23 to form a strip-shaped slurry sheet 22. The second spraying device 34 sprays tobacco powder, seasoning powder and adhesive on the upper surface of the strip-shaped slurry sheet 22, and the strip-shaped slurry sheet 22 moves to the right along with the second conveying device 21; the strip-shaped binary composite reconstructed tobacco sheet primary product 10 conveyed by the conveying device 11 is covered and contacted with the surface of the strip-shaped slurry sheet 22, and under the covering and kneading action of the second covering and kneading device 20, the strip-shaped binary composite reconstructed tobacco sheet primary product 10 is covered and kneaded with the strip-shaped slurry sheet 22 to form a strip-shaped ternary composite reconstructed tobacco sheet wet sheet 25; the strip-shaped ternary composite reconstructed tobacco sheet wet sheet 25 is dried by the second drying device 26 to form a strip-shaped ternary composite reconstructed tobacco sheet 27.

[0120] The band-shaped three-component composite reconstituted tobacco sheet 27 is conveyed by the second conveying device 21 to the second stripping device 28, and is stripped from the conveying belt surface of the second conveying device 21 by the stripping action of the second stripping device 28, transferred to the second conveying device 29 and conveyed to the right.

[0121] Embodiment 3 adds a first spraying device 33 and a second spraying device 34 on the basis of Embodiment 1. The first spraying device 33 sprays tobacco powder, seasoning powder, and adhesive on the upper surface of the strip-shaped pulp sheet 3, which is conducive to improving the smoking taste and strength of the tobacco flakes. The second spraying device 34 sprays tobacco powder, seasoning powder, and adhesive on the upper surface of the strip-shaped pulp sheet 22, which is conducive to improving the smoking taste and strength of the tobacco flakes. By directly spraying tobacco powder, seasoning powder, and adhesive on the surface of the strip-shaped pulp sheet, it is also conducive to reducing the moisture content of the binary composite reconstructed tobacco flake wet flake 7 and the strip-shaped ternary composite reconstructed tobacco flake wet flake 25, which is conducive to reducing the difficulty of preparing and conveying the paste-like thick slurry of the first slurry 6 and the second slurry 24, and is conducive to improving production capacity.

Claims

1. A forming device for a ternary composite reconstituted tobacco sheet, characterized in that: It includes a primary coating and compounding device (A), a primary stripping and conveying device (B), a secondary coating and compounding device (C) and a secondary stripping and conveying device (D) which are arranged in sequence according to the material flow direction; The one-time coating composite device (A) comprises a first conveying device (1), a first coating device (5) arranged on the upper right side of the first conveying device (1), a first transmission device (2), a first coating kneading device (12) arranged on the left side of the first coating device (5), and a first drying device (8) arranged in the middle section of the first conveying device (1); The primary stripping and conveying device (B) is arranged below the primary coating and compounding device (A), and comprises a first stripping device (9) and a conveying device (11) arranged behind the first stripping device (9); The secondary coating composite device (C) is arranged behind the primary stripping conveying device (B), and comprises a second conveying device (21), a second coating device (23) arranged at the upper left of the second conveying device (21), a second coating kneading device (20) arranged at the right of the second coating device (23), and a second drying device (26) arranged in the middle section of the second conveying device (21); The secondary stripping and conveying device (D) is arranged behind the secondary coating and compounding device (C), and comprises a second stripping device (28) and a second conveying device (29) arranged behind the second stripping device (28); It also includes a third coating device (31) disposed in the middle section of the first drying device (8) and a fourth coating device (32) disposed in the middle section of the second drying device (26); It also includes a first spraying device (33) arranged on the left side of the first coating device (5) and a second spraying device (34) arranged on the right side of the second coating device (23); The molding method of the ternary composite reconstituted tobacco sheet comprises the following steps: Step 1: crushing tobacco raw materials into tobacco powder of 100-300 meshes, mixing tobacco powder, adhesive and / or flavoring ingredients and water into a paste-like thick slurry containing 60%-90% water; Step 2: Apply the paste-like thick slurry prepared in step 1 on the first conveying surface to form a strip-shaped slurry sheet with uniform thickness; Step 3: Covering and kneading the prefabricated strip-shaped fiber web substrate on the surface of the strip-shaped pulp sheet prepared in step 2 under a tension of no more than 1 N / m to form a strip-shaped binary composite reconstituted tobacco sheet wet sheet; Step 4: drying the strip-shaped binary composite reconstituted tobacco sheet wet sheet prepared in step 3 to prepare a strip-shaped binary composite reconstituted tobacco sheet; Step 5: Spread the paste-like thick slurry prepared in step 1 on the second conveying surface to form a strip-shaped slurry sheet with uniform thickness; Step 6: the strip-shaped binary composite reconstituted tobacco sheet prepared in step 4 is covered and kneaded on the surface of the strip-shaped pulp sheet prepared in step 5 under a tension of no more than 1 N / m to form a strip-shaped ternary composite reconstituted tobacco sheet wet sheet; Step 7: Drying the strip-shaped ternary composite reconstituted tobacco sheet wet sheet prepared in step 6 to prepare a ternary composite reconstituted tobacco sheet.

2. The forming device of reconstituted tobacco sheet according to claim 1, characterized in that: The speed of the first transmission device (2) is matched with that of the first conveying device (1), and under the covering and kneading action of the first covering and kneading device (12), when the strip-shaped fiber web substrate and the strip-shaped pulp sheet are covered and kneaded, the tension of the strip-shaped fiber web substrate is not greater than 1N / m; The first coating device (5) is capable of accommodating a first slurry formed by a uniform mixture of tobacco powder, adhesive and / or flavoring ingredients and water, and is provided with a coating head and a limited coating function. The first slurry is coated on the conveyor belt surface of the first conveyor device (1) in a required width and quantity according to the conveyor line speed of the first conveyor device (1), thereby forming a strip-shaped slurry sheet with uniform thickness; The first covering and kneading device (12) has the function of covering and kneading the strip-shaped pulp sheet and the strip-shaped fiber web substrate; The first conveying device (1) is used to convey the first slurry from the first coating device (5) through the coating head to form a strip-shaped slurry sheet. The first conveying device (1) can carry the strip-shaped slurry sheet to move, and is coated and kneaded with the strip-shaped fiber web substrate at the first coating and kneading device (12) to form a strip-shaped binary composite reconstituted tobacco sheet wet sheet. The first conveying device (1) is a material conveying device that can be circulated repeatedly. The first conveying device (1) has a cleaning function on the return section, and the cleaning method is scraper cleaning / spray cleaning / blowing cleaning. The first conveying device (1) has a function of brushing grease on the conveyor belt surface on the return section. The first drying device (8) is used to dry a belt-shaped dual-component composite reconstituted tobacco sheet wet sheet formed by kneading the upper layer of a belt-shaped fiber web substrate and the lower layer of a belt-shaped pulp sheet covered with cloth; the drying method of the first drying device (8) is airflow drying / quartz tube radiation drying / contact heat transfer drying; The first conveying device (1) carries the strip-shaped binary composite reconstituted tobacco sheet wet sheet through the first drying device (8), and the first drying device (8) dries and shapes the strip-shaped binary composite reconstituted tobacco sheet wet sheet to form a strip-shaped binary composite reconstituted tobacco sheet primary product; The first peeling device (9) has tobacco sheet peeling and transfer functions. The dried strip-shaped binary composite reconstituted tobacco sheet primary product is peeled off from the conveyor belt surface of the first conveying device (1) and transferred to the conveying device (11) under the peeling action of the first peeling device (9) and conveyed to the right.

3. The forming device of reconstituted tobacco sheet according to claim 1 or 2, characterized in that: The conveying device (11) conveys the strip-shaped dual composite reconstituted tobacco sheet primary product peeled and transferred from the first conveying device (1) by the first peeling device (9) at the head end, and conveys the strip-shaped dual composite reconstituted tobacco sheet primary product to the second covering and kneading device (20) at the tail end of the conveying device (11).

4. The forming device of reconstituted tobacco sheet according to claim 1 or 2, characterized in that: The second conveying device (21) is used to convey the strip-shaped pulp sheet and the strip-shaped ternary composite reconstructed tobacco sheet wet sheet, and its speed matches that of the conveying device (11). Under the covering and kneading action of the second covering and kneading device (20), when the strip-shaped binary composite reconstructed tobacco sheet primary product is covered and kneaded with the strip-shaped pulp sheet, the tension of the binary composite reconstructed tobacco sheet primary product is not greater than 1N / m; The second coating device (23) is used to contain a second slurry formed by uniformly mixing a tobacco powder mixture, an adhesive and / or a flavoring ingredient and water, and is provided with a coating head and a limited coating function. According to the conveying line speed of the second conveying device (21), the second slurry is coated on the conveying belt surface of the second conveying device (21) in a required width and quantity to form a strip-shaped slurry sheet with uniform thickness; The second covering and kneading device (20) has the function of covering and kneading the strip-shaped pulp sheet and the primary binary composite reconstituted tobacco sheet; The second conveying device (21) is used to convey the second slurry from the second coating device (23) through the coating head to form a strip-shaped slurry sheet. The second conveying device (21) can carry the strip-shaped slurry sheet to move, and is coated and kneaded with the primary binary composite reconstituted tobacco sheet at the second coating and kneading device (20) to form a strip-shaped ternary composite reconstituted tobacco sheet wet sheet. The second conveying device (21) is a material conveying device that can be circulated repeatedly; the return section of the second conveying device (21) has a cleaning function, and the cleaning method is scraper cleaning / spray cleaning / blowing cleaning; the return section of the second conveying device (21) has a conveyor belt surface grease brushing function; The second drying device (26) is used to dry a strip-shaped ternary composite reconstructed tobacco sheet wet sheet formed by kneading the upper layer of the primary binary composite reconstructed tobacco sheet and the lower layer of the strip-shaped pulp sheet covered with cloth; the drying method of the second drying device (26) is airflow drying / quartz tube radiation drying / contact heat transfer drying; The second conveying device (21) carries the strip-shaped ternary composite reconstituted tobacco sheet wet sheet and moves through the second drying device (26), and the second drying device (26) dries and shapes the strip-shaped ternary composite reconstituted tobacco sheet wet sheet to form a strip-shaped ternary composite reconstituted tobacco sheet; The second peeling device (28) has the function of peeling and transferring tobacco sheets. Under the peeling action of the second peeling device (28), the dried strip-shaped ternary composite reconstituted tobacco sheets are peeled off from the conveyor belt surface of the second conveying device (21) and transferred to the second conveying device (29) and conveyed to the right.

5. The forming device of reconstituted tobacco sheet according to claim 1 or 2, characterized in that: During the drying and shaping process of the strip-shaped dual composite reconstituted tobacco sheet wet sheet through the first drying device (8), the coating liquid prepared from leaf paste and stem paste and / or fragrance ingredients are again added to the strip-shaped dual composite reconstituted tobacco sheet wet sheet; During the drying and shaping process of the strip-shaped three-component composite reconstituted tobacco sheet wet sheet through the second drying device (26), the coating liquid prepared by leaf paste and stem paste and / or flavoring ingredients are again added to the strip-shaped three-component composite reconstituted tobacco sheet wet sheet.

6. The forming device of reconstituted tobacco sheet according to claim 1 or 2, characterized in that: Before the strip-shaped pulp sheet is compounded with the strip-shaped fiber web substrate, tobacco powder and / or seasoning powder and adhesive are sprayed on the upper surface of the strip-shaped pulp sheet; before the strip-shaped pulp sheet is compounded with the binary composite reconstituted tobacco sheet, tobacco powder and / or seasoning powder and adhesive are sprayed on the upper surface of the strip-shaped pulp sheet.

7. The forming device of reconstituted tobacco sheets according to claim 1 or 2, characterized in that: The conveying device (11) has a conveying and / or temporary storage function, and realizes one-time processing or separate independent processing of the initial binary composite reconstituted tobacco sheet and the strip-shaped ternary composite reconstituted tobacco sheet.

8. The forming device of reconstituted tobacco sheets according to claim 1 or 2, characterized in that: The first conveying device (1) is a cylindrical conveyor / belt conveyor; The second conveying device (21) is a cylindrical conveyor / belt conveyor.

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