Reconstituted tobacco cigar coating, preparation method thereof and cigar

Abstract

The invention discloses a reconstituted tobacco cigar coating, a preparation method thereof and a cigar. The reconstituted tobacco cigar coating is prepared from tobacco stems subjected to lignin low-weight treatment, fluff pulp subjected to lignin low-weight treatment and a cigar material. The preparation method comprises the following steps: adding a biological enzyme into a material for extraction, separating an extracting solution and a solid matter, carrying out vacuum concentration on the extracting solution, and adding a pH regulator to form a coating solution; and pulping the fixture and manufacturing the fixture into a sheet base, and coating the surface of the sheet base with a coating liquid and a sizing agent to obtain the reconstituted cigar coating of the tobacco cigar. According to the preparation method provided by the invention, the cigar coating has high physical strength, low lignin content, remarkable oily feeling, cigar flavor and water bleeding prevention capability, the quality of the reconstituted tobacco cigar coating is improved, and the requirements of medium-speed and high-speed mechanical rolling setting are met.

Description

Technical Field

[0001] This patent belongs to the field of reconstituted tobacco technology for cigars, specifically relating to a reconstituted tobacco cigar wrapper, its preparation method, and cigar tobacco. Background Technology

[0002] As a special tobacco product, cigars have the advantages of rich and full-bodied smoke, long-lasting aroma, a bittersweet taste, and a clean and pleasant aftertaste. With the development of the social economy, the trend of diversified tobacco product consumption is becoming increasingly apparent, and the demand for cigars in my country is also constantly increasing.

[0003] Traditional cigars consist of three parts: filler, binder, and wrapper. The filler is made from cigar-shaped tobacco leaves and their fragments, pressed into a cylindrical shape using a mold. A large tobacco leaf (the binder) is then used to shape the filler, preventing it from unraveling. Finally, a whole tobacco leaf (the wrapper) is wrapped around it, and after finishing, it becomes a cigar. These handmade cigars are of high quality, but due to the limited availability of tobacco leaves for the wrapper and binder, manual production is inefficient and cannot be mechanized on a large scale. This results in high production costs, low efficiency, and high prices, hindering widespread adoption. With the revision of national standards for cigars, the wrappers for half-leaf and rolled cigars must use reconstituted tobacco leaves. This means that the reconstituted tobacco leaves used for cigar wrappers must primarily consist of tobacco dust, tobacco scraps, shredded tobacco, and tobacco stems.

[0004] Currently, cigar wrappers on the domestic market are generally made by pulping tobacco raw materials with non-tobacco plant fibers, forming a paper base, and adding pigments and fillers. For example, patent document CN102499469B discloses a method for preparing machine-packaged tobacco coated cigar wrappers, which involves pulping raw tobacco materials such as Burley tobacco, aromatic tobacco, sun-dried tobacco, flue-cured tobacco fragments, or tobacco stems, adding external fiber pulp and calcium carbonate, and forming a paper base as the wrapper. Although the wrapper obtained by this method uses tobacco substances as the main raw material, it still has certain differences from natural cigar tobacco leaves in terms of sensory taste and appearance. Patent document CN104480774A discloses a cigar wrapper with tobacco leaf texture, which uses one or more of the coarse fibers of sugarcane bagasse, tobacco stems, and corn silk added to a mixed pulp, forming a paper base, and finally applying tobacco coating liquid to the paper base to make the wrapper. This method has problems such as low integration between coarse fibers and wood pulp fibers, and the product surface having protruding veins and burrs. Patent document CN115736318B discloses a cigar wrapper and binder and their preparation method, which improves the bonding force between dry-processed sheet fibers by adding lignin sulfonate, laccase, and roller pressing. However, this preparation method has the problem of not being able to accurately control the uniformity of product air permeability. Furthermore, the aforementioned patent documents all use a large proportion of non-tobacco plant fibers, pigments, and fillers, resulting in problems such as a strong burnt paper smell, weak cigar aroma, significant differences in appearance from natural tobacco leaves, and poor water resistance.

[0005] Therefore, there is an urgent need to develop a wrapper with high physical strength, low lignin content, a smooth and oily feel, a distinct cigar flavor, and water-resistant properties. This would meet the tensile strength requirements of medium-speed and high-speed cigarette rolling machines, greatly improve rolling speed, fully satisfy the technical requirements of half-leaf and rolled cigar wrappers, improve the quality of reconstituted tobacco cigar wrappers, and reduce the negative impact of lignin content on the sensory quality of the product. Summary of the Invention

[0006] The purpose of this patent is to provide a reconstituted tobacco cigar wrapper, its preparation method, and the cigar itself, so that the wrapper achieves high physical strength, low lignin content, obvious oiliness, cigar flavor, and water-resistant properties, thereby improving the quality of the reconstituted tobacco cigar wrapper and meeting the requirements of medium-speed and high-speed rolling machines.

[0007] To solve the above technical problems:

[0008] This patent provides a reconstituted tobacco cigar wrapper, which is prepared from tobacco stems treated with low lignin content, lignin-treated fluff pulp, and cigar tobacco material.

[0009] Furthermore, the preparation of reconstituted tobacco cigar wrappers includes the following steps:

[0010] Step A: Add bio-enzymes to the material for extraction. The bio-enzymes are used for low-volume treatment of lignin to obtain extract and solids.

[0011] Step B: The solid material is pulped and formed into sheet base; the extract is concentrated to obtain coating solution;

[0012] Step C: Apply the coating liquid to the surface of the film base, spray the sizing agent, and then dry to obtain the reconstituted tobacco cigar wrapper.

[0013] Furthermore, step A includes:

[0014] Step A-1: ​​Mix the tobacco stems with the fluff pulp, add bio-enzymes for water extraction, and separate the first extract and the first solid.

[0015] Step A-2: Extract the cigar tobacco with alcohol, separate the second extract and the second solid, retain the second extract and discard the second solid.

[0016] Furthermore, in step A-1, the ratio of tobacco stems to fluff pulp is 1:(0.10-0.15), 1:(0.15-0.25), or 1:(0.25-0.40).

[0017] Furthermore, fluff pulp includes one or more combinations of softwood fluff pulp, hardwood fluff pulp, bamboo fiber, straw pulp, hemp pulp, or sugarcane pulp.

[0018] Furthermore, the proportion of added bio-enzymes is as follows: 100-200U, 200-300U, 300-450U, 450-550U, 550-650U, or 650-750U of bio-enzymes per kilogram of tobacco stems.

[0019] Furthermore, the bio-enzymes include one or more combinations of copper blue oxidase, manganese peroxidase, lignin peroxidase, and dye decolorization peroxidase.

[0020] Furthermore, the amount of water added is 6 to 7 times, 7 to 8 times, or 8 to 10 times the weight of the tobacco stems.

[0021] Furthermore, the water extraction temperature is 45–55℃, 55–60℃, or 60–70℃; the time is 30–40 min, 40–50 min, or 50–60 min.

[0022] Furthermore, in step A-2, the mass ratio of cigar tobacco to ethanol aqueous solution is 1:(3-4), 1:(4-5), 1:(5-6), 1:(6-7), or 1:(7-8).

[0023] Furthermore, the concentration of the ethanol-water solution is 50–60%, 60–80%, or 80–95%.

[0024] Furthermore, cigar tobacco includes one or more combinations of cigar tobacco leaves, cigar dust, and cigar scraps.

[0025] Furthermore, the temperature for alcohol extraction is 40–50℃, 50–65℃, or 65–80℃, and the extraction time is 50–60 min, 60–80 min, or 80–90 min.

[0026] Furthermore, step B includes:

[0027] Step B-1: The first solid material is pulped, and filler is added to obtain a mixed slurry. After papermaking, the first sheet base is obtained.

[0028] Step B-2: Mix the first extract with the second extract, concentrate under reduced pressure to obtain a concentrated solution, add a pH adjuster to the concentrated solution, mix well to obtain a coating solution;

[0029] Furthermore, in step B-1, the first solids are pulped to a freeness of 40–42°SR, 42–45°SR, or 45–50°SR.

[0030] Furthermore, the size of the filler is 2000-3000 mesh, 3000-3500 mesh or 3500-4000 mesh, and the filler includes one or more combinations of calcium carbonate, calcium lactate, titanium dioxide, talc and diatomaceous earth.

[0031] Furthermore, the first substrate obtained after papermaking is dried for the first time. The conditions for the first drying are 60-65℃, 65-75℃ or 75-85℃, and the drying time is 10-30 minutes. The dried first substrate has a moisture content of 10-15%.

[0032] Furthermore, the quantitative amount of the first film base after drying is 20–30 g / m³. 2 30~40g / m 2 Or 40-50g / m 2 .

[0033] Furthermore, in step B-2, the first extract and the second extract are mixed in a ratio of 1:(1 to 2).

[0034] Furthermore, the solids are concentrated under reduced pressure to a solids content of 35–40%, 40–45%, or 45–55%.

[0035] Furthermore, the amount of pH adjuster added is 1-3% of the mass concentration of the concentrate.

[0036] Furthermore, step C includes:

[0037] Step C-1: The coating liquid prepared in step B-2 above is coated onto the dried surface of the first substrate, and after a second drying, the second substrate is obtained;

[0038] Step C-2: The second substrate prepared in step C-1 is sprayed with an adhesive and dried for the third time to obtain the reconstituted tobacco cigar wrapper.

[0039] Furthermore, in step C-1, the coating amount of the coating liquid is 5–35 g / m². 2 .

[0040] Furthermore, in step C-2, the amount of sizing agent sprayed is 0.5-0.7%, 0.7-0.8%, or 0.8-1.0% of the second substrate mass concentration.

[0041] Furthermore, the concentration of the sizing agent is 0.1–0.3%, 0.3–0.7%, 0.7–1.0%, or 1.0–2.0%.

[0042] Another aspect of this patent provides a cigar tobacco comprising the aforementioned reconstituted tobacco cigar wrapper.

[0043] This patent provides a reconstituted tobacco cigar wrapper, its preparation method, and the cigar itself. It uses tobacco stems and coniferous wood pulp instead of the tobacco stems, tobacco dust, and wood pulp fibers used in conventional production, resulting in a wrapper with higher physical strength and better liquid absorption. The tobacco stems are treated with bio-enzymes to reduce lignin content and minimize its negative impact on the product's sensory quality. An extract obtained from the cigar tobacco leaves through alcohol extraction, after coating, significantly enhances the product's oiliness and cigar flavor. Applying paraffin wax to the substrate surface significantly improves the product's water resistance. The cigar wrapper produced using this method meets the tensile strength requirements of medium-speed and high-speed cigar rolling machines, greatly increasing rolling speed and fully satisfying the technical requirements of half-leaf and rolled cigar wrappers. Attached Figure Description

[0044] The above content of this patent and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution.

[0045] Figure 1 This is a flowchart illustrating the preparation process of the reconstituted tobacco cigar wrapper in this patent. Detailed Implementation

[0046] The detailed features and advantages of this patent are described below in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this patent and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this patent.

[0047] In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined to have the following meanings:

[0048] As used in this patent, the term "fluff pulp" refers to specially treated high-quality wood pulp, a type of pulp used as an absorbent medium, which is wood pulp or straw pulp after bleaching, extraction of organic solvent extracts, and other processes.

[0049] As used in this patent, the term "bioenzyme" refers to oxidases that play a key role in the degradation of lignin and pigments, including copper blue oxidase, manganese peroxidase, lignin peroxidase, and dye decolorization peroxidase.

[0050] As used in this patent, the term "pulping" refers to the process of cutting, separating, and preparing a pulp from tobacco fibers or other fibers.

[0051] As used in this patent, "beating degree" refers to the degree of beating, expressed by °SR, which reflects the effects of refining, such as fiber cutting, splitting, swelling, and hydration, after the pulp has passed through a refiner.

[0052] As used in this patent, the term "slurry" refers to a mixture of pulp and water after the tobacco fiber or other fiber has been loosened;

[0053] As used in this patent, the term "sheet base" refers to the sheet-like material formed after the pulp interweaves and is dehydrated in the reconstituted tobacco production process.

[0054] As used in this patent, the term "concentration" refers to the process of evaporating the solvent in a tobacco extract to increase the concentration of the extract.

[0055] As used in this patent, the term "coating" refers to the process of uniformly applying a prepared coating solution onto a substrate so that the substrate can fully and uniformly absorb the coating solution.

[0056] As used in this patent, the term "sheet weight" refers to the oven-dry mass per unit area of ​​reconstituted tobacco leaf substrate, measured according to a prescribed test method, in g / m². 2 ;

[0057] As used in this patent, the term "tensile strength" refers to the maximum tension that a reconstituted tobacco leaf per unit width can withstand before breaking under conditions specified by standard test methods, expressed in kN / m.

[0058] As used in this patent, the terms “comprising” or “having” have the same meaning as “containing”, and also include other forms of the term, such as the gerund and singular forms in English, meaning including but not limited to, and not intended to exclude, for example, other elements, components, integers or steps.

[0059] All figures used to represent component amounts, properties (e.g., weight-average molecular weight), reaction conditions, etc., should be considered in all cases modified by the terms "within the unavoidable margin of error" or "approximately". Therefore, the numerical values ​​presented herein are approximate and may vary depending on the desired properties sought to be obtained by this patent. The principle of equivalents, which is applied to a minimum and not intended to limit the scope of the claims, should be applied, for example, each value should be interpreted at least according to the reported significant digits and by applying conventional rounding techniques.

[0060] All other terms used herein for special definition are intended to have the general meaning understood by one of ordinary skill in the art, and in particular, meaning that one of ordinary skill in the art, upon reading the claims, specification and drawings of this patent, can directly and without doubt determine how the technical solution of this patent can be implemented.

[0061] Even if there are incomplete descriptions, omissions, or ambiguities in the grammar, words, punctuation, graphics, symbols, etc. of the claims, specification, and drawings of this patent, a person skilled in the art can still arrive at the only correct understanding by reading the claims, specification, and drawings as a whole without extensive reasoning or experimentation, and effectively exclude various incorrect interpretations that are not aimed at achieving the purpose of this patent.

[0062] Those skilled in the art would first choose to read the claims, specification, and drawings of this patent to reasonably interpret the terms; secondly, they would choose to refer to the relevant definitions in other documents published by the applicant before the filing date to reasonably interpret the terms; thirdly, they would choose the references cited in this patent to reasonably interpret the terms; and finally, they would choose to combine the technical dictionaries, technical manuals, reference books, textbooks, national or industry technical standards, etc., commonly used by those skilled in the art to reasonably interpret the terms.

[0063] All references cited in this application are incorporated herein by way of citation in their entirety, to the extent that they do not contradict the disclosure herein. It will be apparent to those skilled in the art that products (apparatus, components, devices, compounds, compositions, materials, etc.) and methods (processes, steps, conditions, parameters, equipment, and test methods, equipment, etc.) not specifically described herein can be applied to the implementation of the invention fully disclosed herein without the need for excessive experimentation. This patent is intended to cover all functional equivalents known in the art of the methods, apparatus, apparatus components, materials, processes, and techniques specifically described herein.

[0064] Furthermore, multiple publications are referenced throughout this specification. To provide a more comprehensive description of the current state of the art in which this disclosure pertains, the entire contents of these publications are incorporated herein by reference. With regard to the content contained in published documents and in the statements that cite them, each published document is also incorporated herein by reference individually and specifically.

[0065] All the components used in this patent can be prepared by various known methods that are fully disclosed in the chemical literature.

[0066] Before disclosing and describing the materials, compounds, compositions, articles, apparatus, and methods of this patent, it should be understood that the following aspects are not limited to specific synthetic methods or specific reagents, as these are of course subject to variation. It should also be understood that the terminology used herein is for descriptive purposes only and not for limitation.

[0067] like Figure 1 As shown, this patent provides a reconstituted tobacco cigar wrapper, its preparation method, and a cigar, comprising the following steps:

[0068] Step A: Add bio-enzymes to the material for extraction. The bio-enzymes are used for low-volume treatment of lignin to obtain extract and solids.

[0069] Step B: The solid material is pulped and formed into sheet base; the extract is concentrated to obtain coating solution;

[0070] Step C: Apply the coating liquid to the surface of the film base, spray the sizing agent, and then dry to obtain the reconstituted tobacco cigar wrapper.

[0071] 1. Step A specifically involves:

[0072] (1) Mix the first tobacco raw material and fluff pulp evenly in a ratio of 1:(0.1~0.4) to obtain the material.

[0073] The first tobacco raw material includes one or more combinations of tobacco stems, tobacco dust and fragments; the fluff pulp includes coniferous fluff pulp, broadleaf fluff pulp, bamboo fiber, straw pulp, hemp pulp or sugarcane pulp.

[0074] (2) Add 100-750U of biological enzyme (i.e., the amount of biological enzyme added is 100U / kg-750U / kg) according to the weight of the first tobacco raw material (per kilogram) and mix. Then add water at a temperature of 45-70℃ according to 6-10 times the weight of the first tobacco raw material and perform water extraction for 30-60 minutes. After separation, the first extract and the first solid are obtained.

[0075] Among them, biological enzymes include one or more combinations of copper blue oxidase, manganese peroxidase, lignin peroxidase and dye decolorization peroxidase.

[0076] (3) The second tobacco raw material is mixed with an ethanol aqueous solution with a concentration of 50-95% at a mass ratio of 1:(5-8) and placed in an extraction tank. The mixture is extracted for 50-90 minutes at a temperature of 40-80℃. After separation, the second extract and the second solid are obtained. The second extract is retained and the second solid is discarded.

[0077] The second tobacco ingredient includes one or more combinations of cigar tobacco leaves, tobacco dust, and tobacco scraps.

[0078] 2. Step B specifically involves:

[0079] (1) Pulping the first solid obtained in step A until the freeness is 40-50°SR.

[0080] (2) After pulping, filler is added and mixed to obtain mixed slurry.

[0081] The filler particles are sized to pass through a 2000-4000 mesh sieve and are used to fill pores, improve tensile strength, adjust pH, and reduce production costs. The filler includes one or more combinations of calcium carbonate, calcium lactate, titanium dioxide, talc, and diatomaceous earth.

[0082] (3) Using a long-wire papermaking machine, the mixed slurry prepared in step (2) above is papermade using traditional processes to obtain a sheet base with a quantitative amount of 20-50 g / m². 2 The first base.

[0083] (4) The first substrate prepared in step (4) is dried for the first time. The drying conditions are 60-85℃ for 10-30 minutes to obtain the dried first substrate with a water content of 30-45%.

[0084] (5) The first extract obtained in step A above is mixed with the second extract in a ratio of 1:(1~2), and then concentrated under reduced pressure until the solid content is 35~55% to obtain a concentrated solution.

[0085] (6) Add a pH adjuster with a mass concentration of 1 to 3% to the concentrate, mix well and obtain the coating solution.

[0086] The pH adjuster includes one or more combinations of malic acid, citric acid, sodium citrate, potassium citrate, acetic acid, adipic acid, fumaric acid, gluconic acid-δ-lactone, gluconic acid, lactic acid, maleic acid, tartaric acid, succinic acid, propionic acid, ascorbic acid, phosphoric acid, sodium orthophosphate, potassium orthophosphate, calcium orthophosphate, sodium diphosphate, potassium diphosphate, calcium diphosphate, pentasodium triphosphate, pentapotassium triphosphate, sodium polyphosphate, and potassium polyphosphate.

[0087] 3. Step C specifically involves:

[0088] (1) Using a coating roller device, the coating liquid prepared in step B is applied to the surface of the dried first substrate, with a coating amount of 5-35 g / m². 2 , thus obtaining the second base.

[0089] (2) The second substrate prepared in step (1) above is dried for a second time. The conditions for the second drying are 60-85℃ and 10-30 min to obtain the dried second substrate with a water content of 10-15%.

[0090] (3) Spray a sizing agent with a mass concentration of 0.5 to 1.0% onto the dried second substrate surface to obtain the third substrate.

[0091] The sizing agent includes one or more combinations of paraffin emulsion, alkyl ketone dimer (AKD), styrene-maleic anhydride copolymer (SMA), styrene-acrylate copolymer (SAE), styrene-acrylate-maleic anhydride monoester copolymer (SAM), carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), starch, and animal glue.

[0092] (4) The third sheet prepared in step (3) above is dried for the third time. The conditions for the third drying are 60-85℃ and 10-30 min to obtain the finished eggplant skin.

[0093] (5) The finished cigar wrapper is cut into paper rolls of a set width (usually 38mm or 26mm) by a slitting machine. It can also be used directly as a paper roll for machine-made cigars. After rolling, the cigars are obtained.

[0094] Example 1

[0095] (1) Mix tobacco stem raw material and softwood pulp at a ratio of 1:0.3 to obtain the material;

[0096] (2) Add 500 U / kg of copper blue oxidase to the material and mix it. Place it in an extraction tank and add hot water at 50°C at 7 times the weight of the tobacco stem raw material for water extraction. The water extraction time is 60 min. After separation, the first extract and the first solid are obtained.

[0097] (3) Mix cigar tobacco leaves with 90% ethanol aqueous solution at a mass ratio of 1:5. After mixing, place the mixture in an extraction tank and carry out alcohol extraction at a temperature of 50°C for 70 min. After separation, obtain the second extract and the second solid. Keep the second extract and discard the second solid.

[0098] (4) The first solid obtained in step (2) above is pulped until the freeness is 46°SR, and then 3500 mesh ultrafine calcium carbonate powder is added and mixed to obtain a mixed slurry.

[0099] (5) Using a long-wire papermaking machine, the mixed slurry prepared in step (4) above is papermade using traditional processes to obtain a sheet base with a quantitative amount of 28 g / m³. 2 The first base;

[0100] (6) The first substrate prepared in step (5) is dried for the first time. The drying conditions are 65°C for 25 min to obtain the dried first substrate with a water content of 30%.

[0101] (7) The first extract obtained in step (2) and the second extract obtained in step (3) are mixed in a 1:1 ratio and then concentrated under reduced pressure to a solid content of 40% to obtain a concentrated solution.

[0102] (8) Add potassium citrate and sodium citrate at a mass concentration ratio of 1.5% to the concentrate, mix well to obtain the coating solution;

[0103] (9) Using a coating roller device, the coating liquid prepared in step (8) is applied to the surface of the first substrate after drying in step (6), with a coating amount of 5 g / m². 2 Thus, the second base was obtained;

[0104] (10) The second substrate prepared in step (9) is dried for a second time at 65°C for 25 minutes to obtain the dried second substrate with a moisture content of 12%.

[0105] (11) Spray a paraffin emulsion with a mass concentration of 1.0% onto the dried surface of the second substrate to obtain the third substrate;

[0106] (12) The third sheet prepared in step (11) is dried for the third time. The conditions for the third drying are 60°C and 20 min, so that the moisture content is reduced to 10% to obtain the finished eggplant skin.

[0107] (13) The finished cigar wrapper is cut into paper rolls of a set width by a slitting machine. It can also be used directly as a paper wrapper for machine-made cigars. After rolling, the cigar is obtained.

[0108] Example 2

[0109] (1) Mix tobacco stem raw material and coniferous wood pulp at a ratio of 1:0.2 to obtain the material;

[0110] (2) Add 600 U / kg of copper blue oxidase to the material and mix it. Place it in an extraction tank and add hot water at 60°C at 8 times the weight of the tobacco stem raw material for water extraction. The water extraction time is 60 min. After separation, the first extract and the first solid are obtained.

[0111] (3) Mix cigar tobacco leaves with 70% ethanol aqueous solution at a mass ratio of 1:7. After mixing, place the mixture in an extraction tank and carry out alcohol extraction at a temperature of 60℃ for 80 min. After separation, obtain the second extract and the second solid. Keep the second extract and discard the second solid.

[0112] (4) The first solid obtained in step (2) above is pulped until the freeness is 45°SR, and then 3000 mesh ultrafine calcium carbonate powder is added and mixed to obtain a mixed slurry;

[0113] (5) Using a long-wire papermaking machine, the mixed slurry prepared in step (4) above is papermade using traditional processes to obtain a sheet base with a quantitative amount of 25 g / m². 2 The first base;

[0114] (6) The first substrate prepared in step (5) is dried for the first time. The drying conditions are 70°C for 20 min to obtain the dried first substrate with a water content of 33%.

[0115] (7) The first extract obtained in step (2) and the second extract obtained in step (3) are mixed in a 1:1 ratio and then concentrated under reduced pressure to a solid content of 45% to obtain a concentrated solution.

[0116] (8) Add potassium citrate and sodium citrate at a mass concentration ratio of 2.0% to the concentrate, mix well to obtain the coating solution;

[0117] (9) Using a coating roller device, the coating liquid prepared in step (8) is applied to the surface of the first substrate after drying in step (6), with a coating amount of 5 g / m². 2 Thus, the second base was obtained;

[0118] (10) The second substrate prepared in step (9) is dried for a second time at 70°C for 20 minutes to obtain the dried second substrate with a water content of 10%.

[0119] (11) Spray a paraffin emulsion with a mass concentration of 0.8% onto the dried surface of the second substrate to obtain the third substrate;

[0120] (12) The third sheet prepared in step (11) is dried for the third time. The conditions for the third drying are 60°C and 20 min, so that the moisture content is reduced to 9% to obtain the finished eggplant skin.

[0121] (13) The finished cigar wrapper is cut into paper rolls of a set width by a slitting machine. It can also be used directly as a paper wrapper for machine-made cigars. After rolling, the cigar is obtained.

[0122] Example 3

[0123] (1) Mix tobacco stem raw material and softwood pulp at a ratio of 1:0.1 to obtain the material;

[0124] (2) Add 800 U / kg of copper blue oxidase to the material and mix it. Place it in an extraction tank and add hot water at 60°C at 6 times the weight of the tobacco stem raw material for water extraction. The water extraction time is 40 min. After separation, the first extract and the first solid are obtained.

[0125] (3) Mix cigar tobacco leaves with 50% ethanol aqueous solution at a mass ratio of 1:7. After mixing, place the mixture in an extraction tank and carry out alcohol extraction at a temperature of 70°C for 60 minutes. After separation, obtain the second extract and the second solid. Keep the second extract and discard the second solid.

[0126] (4) The first solid obtained in step (2) above is pulped until the freeness is 42°SR, and then 2500 mesh ultrafine calcium carbonate powder is added and mixed to obtain a mixed slurry.

[0127] (5) Using a long-wire papermaking machine, the mixed slurry prepared in step (4) above is papermade using traditional processes to obtain a sheet base with a quantitative amount of 50 g / m².2 The first base;

[0128] (6) The first substrate prepared in step (5) is dried for the first time. The drying conditions are 75°C for 18 min to obtain the dried first substrate with a water content of 38%.

[0129] (7) The first extract obtained in step (2) and the second extract obtained in step (3) are mixed in a 1:1 ratio and then concentrated under reduced pressure until the solid content is 50% to obtain a concentrated solution.

[0130] (8) Add potassium citrate and sodium citrate at a mass concentration ratio of 2.5% to the concentrate, mix well to obtain the coating solution;

[0131] (9) Using a coating roller device, the coating liquid prepared in step (8) is coated onto the surface of the first substrate after drying in step (6), with a coating amount of 32 g / m². 2 Thus, the second base was obtained;

[0132] (10) The second substrate prepared in step (9) is dried for a second time at 75°C for 18 minutes to obtain the dried second substrate with a water content of 14%.

[0133] (11) Spray a paraffin emulsion with a mass concentration of 0.5% onto the dried surface of the second substrate to obtain the third substrate;

[0134] (12) The third sheet prepared in step (11) is dried for the third time. The conditions for the third drying are 60°C and 20 min, so that the moisture content is reduced to 11% to obtain the finished eggplant skin.

[0135] (13) The finished cigar wrapper is cut into paper rolls of a set width by a slitting machine. It can also be used directly as a paper wrapper for machine-made cigars. After rolling, the cigar is obtained.

[0136] Comparative Example 1

[0137] The wrapper is prepared using the method disclosed in Chinese Patent Document CN104480774A, and then machine-rolled to obtain a cigar. The preparation method is as follows:

[0138] (1) Add hot water at a ratio of 4 times the total weight of the tobacco raw materials, such as burley tobacco, aromatic tobacco, sun-dried tobacco, flue-cured tobacco fragments or tobacco stems, to extract the extract and solids separately.

[0139] The tobacco raw materials consist of a mixture of Burley tobacco, aromatic tobacco, sun-dried tobacco, and flue-cured tobacco in a weight ratio of 2:1:5:2; the water temperature is controlled at 45±5℃ during extraction, and the extraction time is 50 minutes.

[0140] (2) Concentrate the extract obtained in step (1) to 23°Bé to make tobacco extract;

[0141] (3) Add 2% by weight of combustion aid, 2% by weight of humectant and 2% by weight of tobacco colorant to the tobacco extract prepared in step (2) above, mix evenly, and make tobacco coating liquid.

[0142] The combustion aid is composed of potassium citrate, sodium citrate, and potassium malate in a weight ratio of 2:2:1; the humectant is composed of fructose and glycerin in a weight ratio of 2:1.

[0143] (4) The solids prepared in step (1) are mixed and pulped using a pulper until the freeness is 65°SR to obtain tobacco pulp.

[0144] (5) Mix the added commercial wood pulp fibers and beat them to 80°SR to obtain the added fiber pulp;

[0145] The added commercial wood pulp fiber is composed of softwood pulp, hardwood pulp, and hemp pulp mixed in a weight ratio of 1.5:1:1.

[0146] (6) The tobacco pulp prepared in step (4) is added to the added fiber pulp prepared in step (5) to obtain the first mixed pulp;

[0147] The amount of tobacco raw material added is 0.3 times the weight of the added fiber raw material.

[0148] (7) Add calcium carbonate to the above mixed slurry. The amount of calcium carbonate added is 20% of the weight of the oven-dry slurry to obtain the second mixed slurry.

[0149] (8) Add the chopped corn silk to the second mixed slurry. The amount of corn silk added is 3% of the weight of the oven-dry slurry to obtain the third mixed slurry, which is the slurry before plastering.

[0150] (9) Pass the pre-papermaking pulp through a wire paper machine to form a paper with a basis weight of 30 g / m³. 2 Paper base with a moisture content of 5-7%.

[0151] (10) Apply the tobacco coating liquid to the paper base using a single-sided coating method, controlling the coating amount to be 3 g / m². 2The paper has a moisture content of 6-7%, an air permeability of 50-70 CU, and a tensile strength of 0.6-0.8 kN / m, thus preparing cigar wrapper paper. The cigar wrapper paper is then slit into rolls of a set width using a slitting machine. These rolls can be used as cigar wrappers for machine-made cigars, and after rolling, cigars are obtained.

[0152] Comparative Example 2

[0153] The cigars are made from natural cigar tobacco leaves from Yunnan, specifically Yunxue No. 36, which are hand-rolled.

[0154] Test Example 1: Physical Indicator Testing

[0155] The tensile strength, substrate quantification, and appearance of the eggplant wrappers prepared in Examples 1-3 and Comparative Examples 1-2 were tested using existing instruments and equipment.

[0156] The results are shown in Table 1. The physical index test results show that the physical index of the eggplant wrapper in Examples 1 to 3 and the tensile strength of the eggplant wrapper in Comparative Examples 1 to 2 are all within the standard range. Compared with the comparative examples, the eggplant wrappers prepared in the several examples of this application can be rolled on the machine and have a better anti-water seepage effect, which meets the requirements of medium speed and high speed rolling.

[0157] Table 1. Test results of physical properties of the eggplant wrapper in different embodiments and comparative examples.

[0158]

[0159] Test Example 2: Pin Sampling Test

[0160] A tasting experiment was conducted according to the evaluation method, and the final data were recorded. Referring to GB 15269.4-2011 Cigars Part 4 Sensory Technical Requirements, and considering the characteristics of cigar smoke, key evaluation indicators were developed, sensory evaluations were conducted, and evaluation scores were recorded according to Table 2.

[0161] Specifically, a professional evaluation panel of 5 people will score the product based on dimensions such as color (0-10 points), aroma (0-36 points), off-flavors (0-12 points), irritation (0-14 points), aftertaste (0-22 points), and grayness (0-6 points), with a total score of 100 points.

[0162] The evaluation results are as follows:

[0163] (1) Comparative Example 1: The color is relatively uniform and the luster is still oily; the cigar style characteristics are more obvious, the aroma is more prominent, sufficient, slightly rough and more harmonious; there is a slight off-flavor; it is slightly irritating; the aftertaste is pure and comfortable; it burns evenly, the ash is dense, the ash is fine and white.

[0164] (2) Comparative Example 2: The color is uniform and the luster is oily; the cigar style characteristics are obvious, the aroma is pure, rich and harmonious; there is a slight off-flavor; it is slightly irritating; the aftertaste is pure, comfortable, refreshing and bittersweet; the burning is relatively uniform, the ash is dense, the ash is fine and white.

[0165] (3) Example 1: The color is uniform and the luster is oily; the cigar style characteristics are relatively obvious, the aroma is prominent, sufficient, slightly rough and relatively harmonious; there is a slight off-flavor; it is slightly irritating; the aftertaste is pure, comfortable, refreshing and bittersweet; it burns evenly, the ash is dense, the ash is fine and grayish-white.

[0166] (4) Example 2: The color is uniform and the luster is oily; the cigar style characteristics are obvious, the aroma is pure, rich and harmonious; there is a slight off-flavor; it is slightly irritating; the aftertaste is pure, comfortable, refreshing and bittersweet; it burns evenly, the ash is dense, the ash is fine and grayish-white.

[0167] (5) Example 3: The color is uniform and the luster is oily; the cigar style characteristics are more obvious, the aroma is more prominent, full, slightly rough and more harmonious; there is a slight off-flavor; it is slightly irritating; the aftertaste is pure, comfortable, refreshing and bittersweet; it burns evenly, the ash is dense, the ash is fine and grayish-white.

[0168] The scores are shown in Table 2.

[0169] Table 2. Cigar Smoking Test Scoring Table for Different Examples and Comparative Examples

[0170]

[0171] Therefore, it can be concluded that this patent provides a reconstituted tobacco cigar wrapper, its preparation method, and the cigar itself. It uses tobacco stems and coniferous wood pulp to replace the tobacco stems, tobacco dust, and wood pulp fibers used in conventional production, resulting in a wrapper with higher physical strength and better liquid absorption. The use of bio-enzymes to treat the tobacco stems reduces lignin content and minimizes its negative impact on the product's sensory quality. The extraction of cigar tobacco leaves using alcohol extraction, after coating, significantly enhances the product's oiliness and cigar flavor. Applying paraffin wax to the substrate surface significantly improves the product's water resistance. The cigar wrappers produced using this method meet the tensile strength requirements of medium-speed and high-speed cigarette rolling machines, greatly increasing rolling speed and fully satisfying the technical requirements of half-leaf and rolled cigar wrappers.

[0172] In the foregoing description of exemplary embodiments / specific implementations of this patent, various features of this patent are sometimes combined in a single embodiment / specific implementation or its figures and description, with the aim of simplifying the disclosure and aiding in the understanding of one or more of the various aspects of the invention. However, unless expressly stated otherwise or in obvious technical contradiction or exclusion, the descriptive method of this patent should not be construed as reflecting an intention that the claimed features of the invention are more than expressly stated in each claim. Rather, the inventive aspect reflected in the claims lies in not all the features of a single foregoing disclosed embodiment / specific implementation. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, each claim existing independently as a separate embodiment / specific implementation of this patent.

[0173] The terms and expressions used in this specification are for illustrative purposes and not for limitation. Their use is not intended to exclude any equivalents of the shown and described features or portions thereof, but rather to facilitate the understanding that various modifications may be possible within the scope of this patent claim. Therefore, it should be understood that while this patent has been specifically disclosed through preferred embodiments, exemplary embodiments, and optional features, variations or modifications of the concepts disclosed herein may be adopted by those skilled in the art, and such variations and modifications are therefore considered to be within the scope of this patent as defined by the appended claims. The specific embodiments given in this specification are examples of useful embodiments of this patent, and it will be apparent to those skilled in the art that this patent can be implemented using many variations of the devices, device components, and method steps disclosed herein.

[0174] The foregoing description of specific embodiments fully discloses the general features of this patent, enabling others to easily modify and / or adapt such embodiments for various applications by applying knowledge within the scope of the art, without excessive experimentation or deviation from the general concept of this patent. Therefore, based on the teachings and guidance provided herein, it is intended that such modifications and alterations be included within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology used herein is for descriptive purposes and not intended to be limiting; thus, the wording or terminology in this specification will be interpreted by those skilled in the art based on the foregoing teachings and guidance.

[0175] Furthermore, the scope of this patent should not be limited to any of the exemplary embodiments described above, but only to the appended claims and their equivalents.

Claims

1. A reconstituted tobacco cigar wrapper, characterized in that, The reconstituted tobacco cigar wrapper is prepared from tobacco stems treated with low lignin content, lignin-treated fluff pulp, and cigar tobacco material.

2. The reconstituted tobacco cigar wrapper according to claim 1, characterized in that, The preparation of the reconstituted tobacco cigar wrapper includes the following steps: Step A: Add bio-enzymes to the material for extraction. The bio-enzymes are used for low-volume treatment of lignin to obtain extract and solids. Step B: The solid material is pulped and then formed into sheet base; the extract is concentrated to obtain coating solution; Step C: Apply the coating liquid to the surface of the substrate, spray with an sizing agent, and then dry to obtain the reconstituted tobacco cigar wrapper.

3. The reconstituted tobacco cigar wrapper according to claim 2, characterized in that, Step A includes: Step A-1: ​​Mix the tobacco stems with the fluff pulp, add bio-enzymes for water extraction, and separate the first extract and the first solid. Step A-2: Extract the cigar tobacco with alcohol, separate the second extract and the second solid, retain the second extract and discard the second solid.

4. The reconstituted tobacco cigar wrapper according to claim 3, characterized in that, In step A-1, The ratio of tobacco stems to fluff pulp is 1:(0.10-0.15), 1:(0.15-0.25), or 1:(0.25-0.40). The fluff pulp includes one or more combinations of softwood fluff pulp, hardwood fluff pulp, bamboo fiber, straw pulp, hemp pulp, or sugarcane pulp. The addition ratio of the bio-enzyme is: 100-300U, 300-450U, 450-550U, 550-650U or 650-750U of the bio-enzyme per kilogram of the tobacco stems. The bio-enzyme includes one or more combinations of copper blue oxidase, manganese peroxidase, lignin peroxidase, and dye decolorization peroxidase.

5. The reconstituted tobacco cigar wrapper according to claim 4, characterized in that, In step A-2, The mass ratio of the cigar tobacco to the ethanol aqueous solution is 1:(5-6), 1:(6-7), or 1:(7-8), and the concentration of the ethanol aqueous solution is 50-60%, 60-80%, or 80-95%. The cigar tobacco includes one or more combinations of cigar tobacco leaves, cigar dust, and cigar scraps.

6. The reconstituted tobacco cigar wrapper according to claim 5, characterized in that, Step B includes: Step B-1: The first solid material is pulped, and filler is added to obtain a mixed slurry, which is then formed into a sheet base; Step B-2: Mix the first extract with the second extract, concentrate under reduced pressure to obtain a concentrated solution, add a pH adjuster to the concentrated solution, mix evenly to obtain a coating solution.

7. The reconstituted tobacco cigar wrapper according to claim 6, characterized in that, In step B-1, The first solid is pulped to a freeness of 40–42°SR, 42–45°SR, or 45–50°SR. The size of the filler is 2000-3000 mesh, 3000-3500 mesh, or 3500-4000 mesh; The filler includes one or more combinations of calcium carbonate, calcium lactate, titanium dioxide, talc, and diatomaceous earth.

8. The reconstituted tobacco cigar wrapper according to claim 6, characterized in that, In step B-2, The first extract and the second extract are mixed in a ratio of 1:(1-2) and concentrated under reduced pressure to a solid content of 35-40%, 40-45%, or 45-55%. The amount of pH adjuster added is 1-3% of the mass concentration of the concentrate.

9. The reconstituted tobacco cigar wrapper according to claim 6, characterized in that, In step C The coating amount of the coating liquid is 5-35 g / m². 2 ; The amount of the sizing agent sprayed is 0.5-0.7%, 0.7-0.8%, or 0.8-1.0% of the substrate mass concentration.

10. A cigar, characterized in that, The cigar wrapper includes reconstituted tobacco as described in any one of claims 1 to 9.

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