CN113508918A - Preparation method of lasting multi-odor type heating non-combustible tobacco sheet - Google Patents
Preparation method of lasting multi-odor type heating non-combustible tobacco sheet Download PDFInfo
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- CN113508918A CN113508918A CN202110465461.6A CN202110465461A CN113508918A CN 113508918 A CN113508918 A CN 113508918A CN 202110465461 A CN202110465461 A CN 202110465461A CN 113508918 A CN113508918 A CN 113508918A
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
- A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
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Abstract
The invention discloses a preparation method of a lasting multi-fragrance type heating non-combustible tobacco sheet, which comprises the steps of adding a mixture of a macromolecular fragrance precursor, a heat-conducting adhesive, a heat-conducting coloring agent and tobacco powder into pulp of wood pulp fiber, an atomizing agent and water, controlling the stirring speed of the pulp, increasing the stirring speed and the temperature of thick pulp, selecting a proper coating flat plate and a proper covering film, and obtaining a novel tobacco sheet which is uniform, smooth, fine and smooth and easy to peel by utilizing a freeze drying technology. The method has simple process, and the prepared tobacco sheet has stable and uniform dispersion of the flavor precursor and the heat-conducting adhesive. The prepared heated cigarette can utilize the characteristics of fragrance precursor that fragrance is released by heating and the heat-conducting property of the sheet is good, so that the fragrance generated by the heated cigarette is rich and rich, the fragrance is released durably and stably, and the internal quality and the smoking sensory comfort of the heated cigarette are obviously improved.
Description
Technical Field
The invention relates to the field of heating non-combustible tobacco, in particular to a preparation method of a lasting multi-odor type heating non-combustible tobacco sheet.
Background
The heating cigarette is also called as a heating non-combustion cigarette, belongs to one of novel tobaccos, and is the novel tobacco which is developed most rapidly and with the greatest prospect at present. The heated cigarette is characterized by heating tobacco shreds instead of burning the tobacco shreds. The tobacco material for cigarette heating is mostly used in the form of tobacco sheet (reconstituted tobacco), which is a core material of cigarette products that are not burned. Due to the characteristics of 'heating without burning' and low heating temperature (about 300 ℃), the release of volatile aroma substances in the smoke of the tobacco sheets of the heated cigarettes is inferior to that of the traditional cigarettes, and the characteristic aroma of the tobacco sheets is generally required to be modified and improved or compensated by adding external fragrance. At present, the method of adding tobacco extract and tobacco essence into a tobacco sheet of a heated cigarette is common, but in the pulping process, the essence liquid has large loss when the sheet is dried and formed by adding conventional volatile essence. Meanwhile, different from the moving combustion of tobacco in traditional cigarettes, the tobacco sheets in the cigarette heating rod are continuously heated in the heating smoking set for 6-7 minutes, the existing flavor substances and the additional flavor volatile substances in the tobacco sheets are very easy to volatilize in the first few minutes of heating, so that the residual flavor amount is obviously reduced, and the early-stage and later-stage flavor release amount of smoking is uneven, so that the smoking experience of consumers is poor.
In addition, due to the heating property of the heated cigarette, even if different heating materials and heating modes are used for heating the smoking set, the defect that the heat conducting property of the tobacco sheet is poor cannot be changed, so that a proper green and environment-friendly adhesive and auxiliary agent with good heat conducting property need to be found, and the tobacco sheet has good tensile property and heat conducting property.
Chinese patent No. CN107981402B discloses a heating non-combustion tobacco sheet and a preparation method thereof, the method combines multiple biological treatments, specific treatment processes and treatment means, and specific medicinal plants, can improve the tensile strength and the bulk of the heating non-combustion tobacco sheet, is not easy to adhere, basically eliminates bad smell such as wood miscellaneous gas and the like, has specific medicinal plant fragrance, basically has no irritation and burning sensation, and has rich and soft smoke fragrance. However, the content of the effective components in the medicinal plants adopted by the method is limited, and the amount of fragrance released during low-temperature heating is less, so that the low-temperature smoking experience of consumers is poor.
Chinese patent (CN 106235390A) discloses a flavoring additive for tobacco sheets and a preparation method and application thereof. The flavoring and coloring additive for the tobacco sheets is obtained by mixing and stirring Brazilian tobacco leaf extract, Maillard reactant, tobacco powder and tobacco leaf fragment extract and propylene glycol and standing, wherein the Maillard reactant is 1.1826 +/-0.0080 relative density reactant obtained by reacting purified water, glucose, proline, 26% ammonia water and caramel color at a specific temperature under regulation; the tobacco powder and tobacco leaf fragment extract is obtained by extracting tobacco powder and tobacco leaf fragment with 50% ethanol, filtering, concentrating to relative density (20 deg.C) of 1.3186 + -0.0080, and filtering again. The coating liquid is added into the coating liquid of the tobacco sheets, so that the problems of dark color, fragrance loss, heavy miscellaneous gas and the like of the tobacco sheets can be effectively solved, the amount of the original fragrance of the tobacco is increased in the smoking process, the texture of the fragrance is improved, and the miscellaneous gas is reduced. However, in the method, the main aroma component in the maillard reactant is a volatile small molecular compound, and the aroma emission of the heated cigarette cannot last during smoking, so that the aroma amount is reduced in the later smoking period, and the smoking experience is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of a durable multi-fragrance type heating non-combustible tobacco sheet, which utilizes the characteristic that macromolecular fragrance precursors gradually release fragrance after being heated, adds the fragrance precursors, adaptive adhesive with good heat conductivity and coloring agent into tobacco powder to prepare thick slurry, and heats and stirs the thick slurry to uniformly and firmly disperse the thick slurry in the tobacco sheet, thereby obtaining the novel heating non-combustible tobacco sheet with high fragrance amount and durable fragrance release.
The technical scheme provided by the invention is as follows: a preparation method of a lasting multi-odor type heating non-combustible tobacco sheet is characterized by comprising the following steps:
s1, removing tobacco stems from the plant leaves, putting the plant leaves into a crusher for crushing, and screening by using a screen to obtain plant powder;
s2, placing the wood pulp fiber into a stirring tank, adding water, stirring, adding the atomizing agent into the stirring tank, and uniformly stirring to obtain slurry;
s3, heating the slurry obtained in the step, then stirring, adding a mixture of plant powder, a heat-conducting adhesive, a heat-conducting coloring agent and an aroma precursor, and after the mixture is added, increasing the stirring speed and the stirring temperature to form thick slurry;
s4, paving a soft film on the flat plate, setting the coating thickness of the coating device, pouring the thick paste obtained in the previous step into the coating device, pushing the coating device to uniformly and continuously coat the thick paste on the soft film to obtain the flat plate paved with the thick paste film;
s5, placing the flat plate paved with the thick paste film obtained in the step into a freeze drying box for drying, reducing the water content of the thick paste film, forming to obtain a tobacco sheet, and uncovering the formed tobacco sheet from the soft film to obtain the tobacco sheet which is not combusted by heating.
Further, the plant leaves in the step S1 include tobacco leaves or a mixture of tobacco leaves and herbs, and the mesh is 60-200 mesh.
Further, in the step S2, the atomizing agent is at least one of glycerin, propylene glycol, and polyethylene glycol.
Further, in the step S2, the mass ratio of the wood pulp fibers to the atomizing agent to the water is 2-10: 5-35: 400-800.
Further, the stirring speed after the atomizing agent is added in the step S2 is 200-400 r/min.
Further, in the step S3, the heat conductive adhesive is heat conductive silica gel or a mixture of heat conductive silica gel and other adhesives, the heat conductive colorant is titanium dioxide or a mixture of titanium dioxide and other colorants, and the flavor precursor is at least one of macromolecular flavor precursors, carotenoids, sterols, cembrenes, and depside in the tobacco leaves.
Further, in the step S3, the mass ratio of the slurry to the plant powder to the binder to the coloring agent to the fragrance precursor is 407-845: 100: 1-5: 1-5: 1 to 20.
Further, the slurry in the step S3 is heated to 40-85 ℃ and then stirred, the stirring speed is 200-400 r/min when the mixture is added, and the stirring speed is increased to 800-1600 r/min after the mixture is added.
Further, the flat plate in the step S4 is any one of a stone plate, a metal plate, or a glass plate, the soft film is a plastic organic film, and a coating gap of the coater is set to be 0.5 to 2 mm.
Further, in the step S5, when the moisture content of the tobacco sheet after being molded is restored to 10 to 14%, the tobacco sheet is peeled from the flexible film.
The volatile aroma components of the tobacco leaves are mostly degraded and converted from aroma precursors, and especially the formation of important aroma components in the tobacco leaves is closely related to the degradation degree of the precursors. Therefore, the content of the flavor precursor in the tobacco leaves is closely related to the content of the tobacco leaf aroma substances and the flavor quality. The macromolecular fragrance precursor can release more volatile fragrance substances when being heated, but cannot be directly applied to the flavoring of tobacco due to the slightly soluble property of the macromolecular fragrance precursor.
The tobacco leaves not only contain macromolecular fragrance precursors, but also contain a plurality of fragrance precursors in natural plant materials which are insoluble in conventional solvents such as ethanol, petroleum ether and the like. These fragrance precursors generally have a relatively high molecular weight, are non-volatile or relatively low-volatile at room temperature, have no fragrance or relatively low fragrance value, and are relatively poorly soluble in solvents such as ethanol, propylene glycol, and water, such as carotenoids and dephenolic compounds.
According to the physicochemical property characteristics of the macromolecular fragrance precursor, the characteristics that the solubility is poor and the additive is not easy to add are overcome, the invention selects a proper preparation process for heating the cigarette tobacco sheet, adds the fragrance precursor, the adaptive adhesive with good heat conductivity and the colorant into the tobacco powder to prepare thick paste, heats and stirs the thick paste to ensure that the thick paste is uniformly and firmly dispersed in the tobacco sheet, and prepares the novel tobacco sheet containing the macromolecular fragrance precursor.
The invention has the beneficial effects that:
1. according to the preparation method of the lasting multi-fragrance type heating non-combustible tobacco sheet, provided by the invention, the heat-conducting adhesive and the heat-conducting coloring agent are added, so that the heat-conducting property of the tobacco sheet can be improved, the tobacco sheet can fully release smoke at a lower temperature, and meanwhile, the tensile property of the tobacco sheet can be improved, so that the tobacco sheet has higher strength and ageing resistance.
2. According to the preparation method of the lasting multi-fragrance type heating non-combustible tobacco sheet, provided by the invention, the macromolecular fragrance precursor in the tobacco sheet can be contained tightly, uniformly distributed and large in load capacity by adding the heat-conducting adhesive. The cigarette made of the tobacco sheet has the characteristics of good heat conduction, rich and rich aroma, stable and lasting aroma release and the like, can continuously meet the experience requirements of smokers, and improves the sensory comfort level during smoking.
Drawings
FIG. 1 is a flow chart of a method for preparing a persistent multi-flavor heat non-combustible tobacco sheet in accordance with an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following will describe the specific embodiments of the present invention with reference to the accompanying drawings.
It is obvious that the drawings in the following description are only some examples of the invention, and it is obvious to a person skilled in the art that other drawings and other embodiments can be obtained from these drawings without inventive effort, and the invention is not limited to this example.
The specific embodiment of the invention is as follows:
example 1
S1, crushing the flue-cured tobacco leaves by using a crusher, and screening the tobacco leaf powder by using a 60-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 2.0g of wood pulp fiber and 400mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 200 r/min, then adding 5.0g of glycerol, and continuing stirring for 5 minutes to form uniform slurry;
s3, heating the stirred slurry to 40 ℃, continuing stirring at the stirring speed of 200 r/min, and adding a mixture of 100g of tobacco powder, 1.0g of sterol, 1.0g of silica gel and 20g of titanium dioxide. After the addition is finished, the rotating speed is increased to 800 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the stone slab, setting the gap of the coater to be 0.5mm, pouring the thick slurry into the coater, and uniformly paving the thick slurry on the stone slab by using the coater;
and S5, placing the stone slab paved with the thick paste into a freeze drying oven for drying, and peeling the tobacco sheets from the plastic organic film when the tobacco sheets are formed and the water content is reduced to 10 percent to obtain No. 1 tobacco sheets.
In the embodiment of the invention, the soft films are all water-insoluble and water-impermeable soft objects, and are preferably smooth plastic organic films, which are beneficial to peeling and separating the formed tobacco sheets.
Example 2
S1, smashing the aromatic tobacco leaves by a smashing machine, and screening the tobacco leaf powder by a 100-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 6.0g of wood pulp fiber and 600mL of water into a stirring tank for stirring, adding 20g of propylene glycol after stirring for 15 minutes at the speed of 300 r/min, and continuing stirring for 5 minutes to form uniform slurry;
and S3, heating the stirred serous fluid to 60 ℃, continuously stirring at the stirring speed of 300 r/min, and adding a mixture of 100g of tobacco powder, 3.0g of carotenoid, 3.0g of silica gel and 10g of titanium dioxide. After the addition is finished, the rotating speed is increased to 1200 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the glass plate, setting the gap of the coater to be 1.0mm, pouring the thick paste into the coater, and uniformly spreading the thick paste on the glass plate by using the coater;
and S5, placing the glass plate paved with the thick paste into a freeze drying oven for drying, and peeling the tobacco sheet from the plastic organic film when the tobacco sheet is formed and the water content is reduced to 12%, thereby obtaining the No. 2 tobacco sheet.
Example 3
S1, crushing burley tobacco leaves by using a crusher, and screening the tobacco leaves powder by using a 200-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 10g of wood pulp fiber and 800mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 400r/min, then adding 35g of polyethylene glycol, and continuing stirring for 5 minutes to form uniform slurry;
s3, heating the stirred slurry to 85 ℃, continuing stirring at the stirring speed of 400r/min, and adding a mixture of 100g of tobacco powder, 5.0g of cembrane, 5.0g of silica gel and 20g of titanium dioxide. After the addition is finished, the rotating speed is increased to 1600 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the metal plate, setting the gap of the coater to be 2.0mm, pouring the thick paste into the coater, and uniformly spreading the thick paste on the metal plate by using the coater;
and S5, drying the metal plate paved with the thick paste in a freeze drying oven, and peeling the tobacco sheet from the plastic organic film when the tobacco sheet is molded and the water content is reduced to 14 percent to obtain the No. 3 tobacco sheet.
Example 4
S1, crushing flue-cured tobacco leaves and tea leaves by using a crusher, and screening the tobacco leaf powder by using a 200-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 10g of wood pulp fiber and 800mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 400r/min, then adding 35g of polyethylene glycol, and continuing stirring for 5 minutes to form uniform slurry;
s3, heating the stirred slurry to 85 ℃, continuing stirring at the stirring speed of 400r/min, and adding a mixture of 100g of tobacco powder, 5.0g of depside, 5.0g of silica gel, 10g of titanium dioxide and 10g of calcium carbonate. After the addition is finished, the rotating speed is increased to 1600 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the stone slab, setting the gap of the coater to be 2.0mm, pouring the thick slurry into the coater, and uniformly paving the thick slurry on the stone slab by using the coater;
and S5, drying the stone slab paved with the thick paste in a freeze drying oven, and peeling the tobacco sheets from the plastic organic film when the tobacco sheets are molded and the water content is reduced to 14 percent to obtain No. 4 tobacco sheets.
Example 5
S1, crushing burley tobacco leaves and licorice leaves by using a crusher, and screening tobacco leaf powder by using a 200-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 10g of wood pulp fiber and 800mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 400r/min, then adding 35g of polyethylene glycol, and continuing stirring for 5 minutes to form uniform slurry;
s3, heating the stirred serous fluid to 85 ℃, continuing stirring at the stirring speed of 400r/min, and adding a mixture of 100g of tobacco powder, 5.0g of flavor precursors in tobacco leaves, 2.5g of silica gel, 2.5g of guar gum and 20g of titanium dioxide. After the addition is finished, the rotating speed is increased to 1600 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the stone slab, setting the gap of the coater to be 2.0mm, pouring the thick slurry into the coater, and uniformly paving the thick slurry on the stone slab by using the coater;
and S5, drying the stone slab paved with the thick paste in a freeze drying oven, and peeling the tobacco sheets from the plastic organic film when the tobacco sheets are formed and the water content is reduced to 14 percent to obtain No. 5 tobacco sheets.
The invention also provides three comparative examples, and the specific examples are as follows:
example 6
S1, crushing the flue-cured tobacco leaves by using a crusher, and screening the tobacco leaf powder by using a 200-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 10g of wood pulp fiber and 800mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 400r/min, then adding 35g of polyethylene glycol, and continuing stirring for 5 minutes to form uniform slurry;
and S3, heating the stirred slurry to 85 ℃, continuously stirring at the stirring speed of 400r/min, and adding a mixture of 100g of tobacco powder, 5.0g of silica gel and 20g of titanium dioxide. After the addition is finished, the rotating speed is increased to 1600 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the stone slab, setting the gap of the coater to be 2.0mm, pouring the thick slurry into the coater, and uniformly paving the thick slurry on the stone slab by using the coater;
and S5, drying the stone slab paved with the thick paste in a freeze drying oven, and peeling the tobacco sheets from the plastic organic film when the tobacco sheets are molded and the water content is reduced to 14 percent to obtain No. 6 tobacco sheets.
Example 7
S1, crushing the flue-cured tobacco leaves by using a crusher, and screening the tobacco leaf powder by using a 200-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 10g of wood pulp fiber and 800mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 400r/min, then adding 35g of polyethylene glycol, and continuing stirring for 5 minutes to form uniform slurry;
s3, heating the stirred slurry to 85 ℃, continuing stirring at the stirring speed of 400r/min, and adding a mixture of 100g of tobacco powder, 5.0g of cembrane and 5.0g of silica gel. After the addition is finished, the rotating speed is increased to 1600 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the stone slab, setting the gap of the coater to be 2.0mm, pouring the thick slurry into the coater, and uniformly paving the thick slurry on the stone slab by using the coater;
and S5, drying the stone slab paved with the thick paste in a freeze drying oven, and peeling the tobacco sheets from the plastic organic film when the tobacco sheets are molded and the water content is reduced to 14 percent to obtain No. 7 tobacco sheets.
Example 8
S1, crushing the flue-cured tobacco leaves by using a crusher, and screening the tobacco leaf powder by using a 200-mesh stainless steel screen to obtain uniform fine tobacco powder;
s2, adding 10g of wood pulp fiber and 800mL of water into a stirring tank for stirring, stirring for 15 minutes at the speed of 400r/min, then adding 35g of polyethylene glycol, and continuing stirring for 5 minutes to form uniform slurry;
and S3, heating the stirred slurry to 85 ℃, continuously stirring at the stirring speed of 400r/min, and adding a mixture of 100g of tobacco powder, 5.0g of cembrane and 20g of titanium dioxide. After the addition is finished, the rotating speed is increased to 1600 r/min, and the mixture is stirred for 20 minutes to form thick slurry;
s4, wrapping a plastic organic film on the stone slab, setting the gap of the coater to be 2.0mm, pouring the thick slurry into the coater, and uniformly paving the thick slurry on the stone slab by using the coater;
and S5, drying the stone slab paved with the thick paste in a freeze drying oven, and peeling the tobacco sheets from the plastic organic film when the tobacco sheets are formed and the water content is reduced to 14 percent to obtain No. 8 tobacco sheets.
The tobacco sheets prepared in examples 1-8 were tested:
cutting No. 1-8 tobacco sheet into 6cm long and 1.2mm wide tobacco shreds, respectively weighing 1.5g of No. 1-8 long tobacco shreds, and rolling into No. 1-8 conventional cigarette. Cutting the prepared conventional cigarette into small segments, respectively filling No. 1-8 small segments into hollow cigarette pieces of the heated cigarette, making into No. 1-8 heated cigarette, and smoking with a heated smoking set.
After the tobacco sheets obtained in the examples 1 to 8 are made into cigarettes which are not burnt by heating, smoking evaluation is carried out on the cigarettes which are not burnt by heating, indexes of fragrance and smoke amount of the cigarettes in different periods are graded, the grading range of each index is 1-10, and the higher the grade is, the better the sensory smoking quality is. The results are shown in Table 1.
TABLE 1-heated non-burning cigarette smoking quality scores prepared from tobacco sheets of examples 1-8
As can be seen from table 1, the cigarettes processed from the tobacco sheets prepared in examples 1 to 5 have significantly better smoking quality, and the heated cigarettes release rich and layered aroma during smoking, which is coordinated with the original aroma of tobacco. After the cigarette is smoked for a plurality of mouths, the aroma concentration is still moderate, and the mouth-by-mouth aroma characteristics are more consistent. It is shown that the tobacco sheets prepared in examples 1-5 have a dense, uniformly distributed and high loading of flavor precursors. The heated cigarette made of the novel tobacco sheet has the characteristics of good heat conduction, rich and rich aroma, stable and lasting aroma release and the like. After completion of smoking, the cigarettes of the heated cigarettes prepared in examples 1 to 5 were peeled off and observed, and no carbonization and blackening of the core sheet at the heated portion was observed. This shows that the novel tobacco sheet has good thermal conductivity and uniform thermal conductivity, and the flavor precursor can stably release flavor substances when heated.
The tobacco sheets prepared in example 6 were processed into cigarettes of inferior smoking quality compared to examples 1-5, because no flavor precursors were added to the tobacco sheets prepared in example 6, resulting in a lower amount of flavor release during low temperature heating of the cigarettes. In the later stage of smoking, the smoke release amount of the tobacco leaves is further reduced, so that the difference between the experience feeling of smoking and the experience feeling of smoking is larger.
The tobacco sheets prepared in example 7 were also processed to produce poor smoking quality cigarettes as compared to examples 1-5, due to the absence of the thermally conductive colorant added to the tobacco sheets prepared in example 7. The heat-conducting coloring agent such as titanium dioxide is not added, so that the heat in the tobacco sheet cannot be uniformly conducted in the macromolecular flavor precursor, and the flavor precursor in the tobacco sheet cannot sufficiently release the flavor substances. The titanium dioxide not only has a hyperchromic effect, but also can protect the stability of a medium, and can improve the heat resistance, light resistance and weather resistance of the product, improve the physical and chemical properties of the product, enhance the mechanical strength of the product and prolong the service life. So that the tobacco sheet can stably exist for a long time in the high-temperature heating environment of the heating appliance.
Compared with the tobacco sheets prepared in the examples 1 to 5, the cigarette processed by the tobacco sheet prepared in the example 8 has poorer smoking quality, because no heat-conducting adhesive such as silica gel is added in the tobacco sheet prepared in the example 8, so that the macromolecular fragrance precursor cembrane cannot be well adhered in the tobacco sheet, the macromolecular fragrance precursor is easy to separate out of the surface, and the fragrance of the macromolecular fragrance precursor is released before smoking. In other embodiments, after the heat-conducting silica gel is added, the heat-conducting silica gel can react with moisture in the air to form a high-performance elastomer, so that the macromolecular fragrance precursor can be stably dispersed in the slurry to form thick slurry. The prepared tobacco sheet has excellent cold and hot alternation resistance, can not change due to the heating of the smoking set, and can stably exist for a long time.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the specific embodiments of the invention be limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A preparation method of a lasting multi-odor type heating non-combustible tobacco sheet is characterized by comprising the following steps:
s1, removing tobacco stems from the plant leaves, putting the plant leaves into a crusher for crushing, and screening by using a screen to obtain plant powder;
s2, placing the wood pulp fiber into a stirring tank, adding water, stirring, adding the atomizing agent into the stirring tank, and uniformly stirring to obtain slurry;
s3, heating the slurry obtained in the step, then stirring, adding a mixture of plant powder, a heat-conducting adhesive, a heat-conducting coloring agent and an aroma precursor, and after the mixture is added, increasing the stirring speed and the stirring temperature to form thick slurry;
s4, paving a soft film on the flat plate, setting the coating thickness of the coating device, pouring the thick paste obtained in the previous step into the coating device, pushing the coating device to uniformly and continuously coat the thick paste on the soft film to obtain the flat plate paved with the thick paste film;
s5, placing the flat plate paved with the thick paste film obtained in the step into a freeze drying box for drying, reducing the water content of the thick paste film, forming to obtain a tobacco sheet, and uncovering the formed tobacco sheet from the soft film to obtain the tobacco sheet which is not combusted by heating.
2. The method for preparing a long-lasting multi-flavor heat non-combustible tobacco flake according to claim 1, wherein the plant leaves in the step S1 comprise tobacco leaves or a mixture of tobacco leaves and herbs, and the mesh is 60-200 mesh.
3. The method for preparing a long-lasting multi-flavor heat non-combustible tobacco flake according to claim 1, wherein the atomizing agent in the step S2 is at least one of glycerin, propylene glycol and polyethylene glycol.
4. The preparation method of the persistent multi-flavor heating non-combustible tobacco sheet as claimed in claim 1, wherein the mass ratio of the wood pulp fibers to the atomizing agent to the water in the step S2 is 2-10: 5-35: 400-800.
5. The method for preparing a long-lasting multi-flavor type heating non-combustible tobacco flake according to claim 1, wherein the stirring speed after the atomizing agent is added in the step S2 is 200-400 r/min.
6. The method of claim 1, wherein the thermally conductive adhesive in step S3 is thermally conductive silica gel or a mixture of thermally conductive silica gel and other adhesives, the thermally conductive colorant is titanium dioxide or a mixture of titanium dioxide and other colorants, and the flavor precursor is at least one of macromolecular flavor precursors, carotenoids, sterols, cembrenes, and depside in tobacco leaves.
7. The method for preparing a persistent multi-flavor heat non-combustible tobacco flake according to claim 1, wherein the mass ratio of the slurry, the plant powder, the binder, the colorant and the flavor precursor in the step S3 is 407-845: 100: 1-5: 1-5: 1 to 20.
8. The method according to claim 1, wherein the slurry is heated to 40 to 85 ℃ and stirred in step S3, wherein the stirring speed is 200 to 400r/min when the mixture is added, and the stirring speed is increased to 800 to 1600 r/min after the mixture is added.
9. The method for manufacturing a long-lasting multi-flavor type heat non-combustible tobacco flake according to claim 1, wherein the flat sheet in the step S4 is any one of a slate, a metal sheet or a glass sheet, the soft film is a plastic organic film, and a coating gap of a coater is set to 0.5 to 2 mm.
10. The method for producing a long-lasting multi-flavor type heat non-combustible tobacco sheet as claimed in claim 1, wherein the tobacco sheet is peeled from the flexible film when the moisture content of the formed tobacco sheet is restored to 10 to 14% in step S5.
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| CN115053978A (en) * | 2022-07-01 | 2022-09-16 | 湖北中烟工业有限责任公司 | Process method for improving thick slurry preparation uniformity |
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| CN115053978A (en) * | 2022-07-01 | 2022-09-16 | 湖北中烟工业有限责任公司 | Process method for improving thick slurry preparation uniformity |
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| CN115669984B (en) * | 2022-11-18 | 2024-05-28 | 云南中烟工业有限责任公司 | Modulation method for improving uniformity of thick tobacco pulp |
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