CN112167696A - Method for increasing fiber of heated non-combustible tobacco pulp - Google Patents
Method for increasing fiber of heated non-combustible tobacco pulp Download PDFInfo
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- CN112167696A CN112167696A CN202010955485.5A CN202010955485A CN112167696A CN 112167696 A CN112167696 A CN 112167696A CN 202010955485 A CN202010955485 A CN 202010955485A CN 112167696 A CN112167696 A CN 112167696A
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
Abstract
The invention provides a method for increasing fiber of heated non-combustible tobacco pulp, which comprises the following steps of: 60-90% of tobacco powder, 4-12% of fiber raw material, 1-6% of adhesive and 12-25% of smoke agent, wherein the total of the components is as follows: 100 percent; through fiber raw material disintegration, the defibrination of thick liquid grinding, be favorable to fiber raw material to divide the silk, brooming, the swelling, increase the hydrogen bond cohesion between the fibre, increase tobacco sheet's intensity and toughness, add viscose in the defibrination thick liquid, can dilute the defibrination thick liquid, it is easier to make the fibre disperse, because viscose and cellulose molecular structure are very similar, make the fibre have very strong affinity, effectively prevent the fibre flocculation, add tobacco powder again, mix each component evenly fast, reduce the mixing time of tobacco powder and water contact, avoid tobacco material to change, obtain intensity height, the good incombustible tobacco sheet of bulk.
Description
Technical Field
The invention relates to the technical field of tobacco sheets, in particular to a method for increasing fiber of tobacco pulp by heating non-combustible tobacco pulp.
Background
With the increasing concern of people on environment and health, the movement of smoke control is global, and tar and harm reduction becomes the key research content and development direction of the tobacco industry of various countries in the world. A cigarette that is not combusted by heating is a novel tobacco product that utilizes an external heat source to heat the tobacco rod sufficiently to volatilize and release the tobacco flavor without igniting the tobacco rod. Compared with the traditional cigarette, the cigarette reduces harmful substances generated by cracking of tobacco due to high-temperature combustion, and greatly reduces the release amount of chemical components of mainstream smoke. Therefore, heating non-combustible smoking articles is becoming increasingly popular with consumers.
Different from the tobacco sheets produced by the traditional thick liquid method, in the process of producing the tobacco sheets which are not burnt by heating by the thick liquid method, in order to ensure that the sheets have higher strength, folding resistance and flexibility and improve the bulk of the tobacco sheets, the exogenous fibers are required to be added in the preparation process of the thick liquid, and the introduction of the exogenous fibers can improve the physical properties of the tobacco sheets and increase the bulk of the tobacco sheets. Therefore, the introduction of exogenous fibers is the core of the production of a tobacco sheet that is not burned by heating by the thick stock method. However, in the manufacturing process, because the viscosity of the tobacco pulp is high, fibers are difficult to disperse and easy to flocculate in the high-concentration pulp, so that the pulp can generate 'wire drawing' due to the fact that flocculated fiber clusters are clamped on a scraper when the pulp flows, production is interrupted once the 'wire drawing' is generated, stopping processing is needed when the production is serious, and the tobacco sheets are not uniform in strength due to non-uniform fiber distribution when products are rolled, so that the tobacco sheets are frequently broken. In addition, the uneven distribution of the fibers can be directly reflected on the surface of the tobacco sheet, so that the appearance quality of the tobacco sheet is poor, various physical indexes are reduced, and when the tobacco sheet is heated and burned, the uneven distribution of the fibers can cause uneven smoke and bring more negative effects to the tobacco sheet. Therefore, the addition and dispersion of the fibers are key factors for restricting the quality improvement of the tobacco sheets which are not burnt by heating in the thick paste method. It must be improved.
Disclosure of Invention
Aiming at the problems in the prior art, after a great deal of research and experiments, the invention obtains the method for increasing the fiber of the heating non-combustible tobacco pulp, so as to solve the problem that the fiber can be uniformly dispersed in the process of producing the heating non-combustible tobacco sheets and improve the production efficiency and the product quality.
The invention is completed by the following technical scheme: a method for increasing fiber of heated non-combustible tobacco pulp is characterized by comprising the following steps:
(1) preparing materials according to the following mass ratio:
60 to 83 percent of tobacco powder
4 to 12 percent of fiber raw material
1 to 6 percent of adhesive
12 to 25 percent of smoke agent
The total of the components is as follows: 100 percent;
(2) comprises the following steps:
(21) feeding the fiber raw material into a hydrapulper for pulping to obtain the pulping slurry with the mass concentration of 1-18%;
(22) feeding the disintegrated pulp obtained in the step (21) into a pulping machine for pulping and defibering to obtain defibered pulp with the beating degree of 40-100 DEG SR;
(23) uniformly mixing the adhesive and the smoke agent, and adding water to prepare adhesive liquid with the mass concentration of the adhesive being 1-12% and the mass concentration of the smoke agent being 10-90%;
(24) adding the viscose liquid obtained in the step (23) into the defibering slurry obtained in the step (22), and uniformly mixing to obtain a mixture;
(25) adding tobacco powder and water into the mixture obtained in the step (24), stirring, dispersing and uniformly mixing to prepare tobacco slurry with the solid content of 10-25%;
(26) carrying out vacuum defoaming on the tobacco pulp obtained in the step (25) to prepare finished pulp;
(27) and (5) delivering the finished pulp obtained in the step (26) to a pulp flow dryer for pulp flow drying to obtain the non-combustible tobacco slice.
Preferably, the fiber raw material in the step (1) is one or more of wood fiber, tobacco fiber, hemp fiber, bamboo fiber, sugarcane fiber, straw fiber and cotton fiber, and the mass ratio of the several is arbitrary.
Preferably, the adhesive in the step (1) is one or more of guar gum, carboxymethyl cellulose, carboxyethyl cellulose, xanthan gum, carrageenan, konjac glucomannan, chitosan and modified starch, and the mass ratio of the guar gum, the carboxymethyl cellulose, the carboxyethyl cellulose, the xanthan gum, the carrageenan, the konjac glucomannan and the modified starch is arbitrary.
Preferably, the smoke agent in the step (1) is one or more of glycerol, ethylene glycol, propylene glycol, sorbitol and butanediol, and the mass ratio of the glycerol, the ethylene glycol, the propylene glycol, the sorbitol and the butanediol is arbitrary.
Preferably, the tobacco powder of step (1) has a particle size of 80-400 mesh.
Preferably, the disintegration of step (21) is carried out in an environment having a temperature of 20-60 ℃.
Preferably, the refining and defibering of the step (22) are finished in an environment with the temperature of 20-60 ℃, and the length of the refined fiber is 0.1-8 mm; the method is beneficial to devillicate, brooming and swell of the fibers, can increase the hydrogen bond bonding force among the fibers, and increase the strength and toughness of the sheet, the too short average length of the fibers is beneficial to the dispersion of the fibers, but the prepared sheet has poor bulk and strength, the too long average length of the fibers is unfavorable for the dispersion and mixing of the fibers, and the continuous production of the sheet is influenced, and meanwhile, the surface quality of the prepared sheet is poor, so the suitable average length is 0.1-8 mm.
Preferably, the adhesive and the smoke agent in the step (23) are mixed for 10-100min at the temperature of 20-40 ℃ to uniformly disperse the adhesive, prevent the adhesive from being coagulated with water to generate fish eyes, and shorten the time for dissolving and dispersing the adhesive; the viscose is added into the fiber pulp in steps, so that the fiber pulp can be diluted, the fiber is easier to disperse, the molecular structure of the viscose is very similar to that of cellulose, the viscose has strong affinity to the fiber, and the fiber can be prevented from being flocculated; the final solid content of the finished pulp is determined, so that the total water content of the pulp is determined, water for dispersing and mixing the defibrinated fibers and the adhesive is reasonably distributed, and further, the concentration of the defibrinated fibers is 3-10wt%, the concentration of the adhesive in the adhesive-viscose liquid is 1-12wt%, and the concentration of the smoke agent is 10-90 wt%.
Preferably, after the tobacco powder is added in the step (25), the tobacco powder is mixed for 1-15min at the temperature of 20-40 ℃, so that the tobacco powder is quickly and uniformly mixed. Too long a mixing time can cause substances in the tobacco powder to seep out, so that the concentration, viscosity, pH value and the like of the pulp are changed, the pulp flow quality is affected, too high a temperature can also cause the concentration, viscosity and the like of the pulp to be changed, and high temperature can accelerate intermolecular movement, so that the pulp is rapidly fermented and deteriorated.
Preferably, the vacuum defoaming of the step (26) is a treatment under a pressure of 10 to 50kPa for 1 to 15 min.
The granularity of the tobacco powder is 80-400 meshes, preferably 100-200 meshes, the finer the granularity of the tobacco powder is, the more favorable the dispersion of the tobacco powder in the slurry is, the better the fluidity of the prepared slurry is, the better the surface quality of the obtained sheet is, the higher the strength is, but the lower the bulk is; the coarser the particle size of the tobacco powder, the less fluid the resulting slurry is and the better the bulk of the resulting sheet, but the poorer the surface quality, the more defects and the poorer the strength.
Compared with the prior art, the invention has the following advantages and effects:
1) the fiber raw materials are subjected to shredding, beating and defibering, so that the fiber raw materials are favorable for devillicating, brooming and swelling, and the hydrogen bond bonding force among fibers is effectively increased, so that the strength and the toughness of the tobacco sheet are increased.
2) After the adhesive and the smoke agent are uniformly mixed, water is added to prepare the mucilage, so that the adhesive is prevented from being condensed when meeting water, and the time for dispersing and mixing the adhesive is shortened.
3) The viscose is added into the defibering slurry in steps, so that the defibering slurry can be diluted, fibers can be dispersed more easily, and the viscose has a very strong affinity due to the fact that the viscose is very similar to a cellulose molecular structure, and the fibers are effectively prevented from being flocculated.
4) And then the tobacco powder is added into the uniformly mixed fiber slurry, so that the components can be quickly and uniformly mixed, the mixing time of the tobacco powder in contact with water is reduced, and the tobacco substance is prevented from being changed due to long-time mixing.
5) The fibers and the adhesive which easily cause the defects of the tobacco sheets are respectively and independently treated in a dispersing way, so that the fine control of a key process is realized, and the quality of the tobacco sheets is improved.
6) Each added component is independently metered, so that the adding amount is accurate, the stability and consistency of the sheet are ensured, and the sheet quality is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to further illustrate the present invention, the following examples are provided to describe the tobacco sheet and the method for preparing the same in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
A method for increasing fiber of heating non-combustible smoke pulp comprises the following steps:
(1) preparing materials according to the following mass ratio:
the particle size of the tobacco powder is 60 percent of 80 meshes
6 percent of wood fiber
Tobacco fiber 6%
Guar gum 3%
3 percent of carboxymethyl cellulose
10 percent of glycerol
12% of ethylene glycol;
(2) comprises the following steps:
(21) feeding the fiber raw material into a hydrapulper, and performing pulping in an environment with the temperature of 20 ℃ to obtain 1% of pulping slurry by mass concentration;
(22) feeding the disintegrated pulp obtained in the step (21) into a pulping machine, and pulping and defibering at the temperature of 20 ℃ to obtain defibered pulp with the beating degree of 80 DEG SR, the fiber length of 0.1-8mm and the mass concentration of 10%;
(23) uniformly mixing the adhesive and the smoke agent, and adding water for mixing for 10min at the temperature of 20 ℃ to prepare adhesive liquid with the mass concentration of the adhesive being 12% and the mass concentration of the smoke agent being 10%;
(24) adding the viscose liquid obtained in the step (23) into the defibering slurry obtained in the step (22), and uniformly mixing to obtain a mixture;
(25) adding tobacco powder and water into the mixture obtained in the step (24), stirring and mixing for 5min at the temperature of 20 ℃, and preparing tobacco slurry with the solid content of 16%;
(26) carrying out vacuum defoaming treatment on the tobacco pulp mixed in the step (25) for 5min under the pressure of 10kPa to prepare finished pulp;
(27) and (3) feeding the tobacco slurry obtained in the step (26) into a conventional flow-slurry dryer to carry out conventional flow-slurry drying, so as to obtain the tobacco sheets which are not burnt under heating, wherein the thickness of the tobacco sheets is 0.18mm, the quantitative rate is 178 g/square meter, the tensile strength is 460N/m, and the sheets are observed to have uniform fiber distribution, granular feeling on the surface, poor uniformity and loose structure.
Example 2
A method for increasing fiber of heating non-combustible smoke pulp comprises the following steps:
(1) preparing materials according to the following mass ratio:
the particle size of the tobacco powder is 82 percent of 100 meshes
1 percent of bamboo fiber
2 percent of sugarcane fiber
Tobacco fiber 1%
2 percent of chitosan
Propylene glycol 6%
6 percent of sorbitol;
(2) comprises the following steps:
(21) feeding the fiber raw material into a hydrapulper, and performing pulping in an environment with the temperature of 50 ℃ to obtain 1% of pulping slurry by mass concentration;
(22) feeding the disintegrated pulp obtained in the step (21) into a pulping machine, and pulping and defibering at the temperature of 50 ℃ to obtain defibered pulp with the beating degree of 90 DEG SR, the fiber length of 0.1-8mm and the mass concentration of 8%;
(23) uniformly mixing the adhesive and the smoke agent, and adding water for mixing for 50min at the temperature of 40 ℃ to prepare adhesive liquid with the mass concentration of the adhesive being 12% and the mass concentration of the smoke agent being 10%;
(24) adding the viscose liquid obtained in the step (23) into the defibering slurry obtained in the step (22), and uniformly mixing to obtain a mixture;
(25) adding tobacco powder and water into the mixture obtained in the step (24), stirring and mixing for 10min at the temperature of 40 ℃, and preparing tobacco slurry with the solid content of 16%;
(26) carrying out vacuum defoaming treatment on the tobacco pulp mixed in the step (25) for 10min under the pressure of 20kPa to prepare finished pulp;
(27) and (3) feeding the tobacco slurry obtained in the step (26) into a conventional flow-slurry dryer to carry out conventional flow-slurry drying, so as to obtain the tobacco sheets which are not burnt under heating, wherein the thickness of the tobacco sheets is 0.18mm, the quantitative rate is 182 g/square meter, the tensile strength is 580N/m, and the sheets are observed to have uniform fiber distribution, less granular sensation on the surface, better uniformity and loose structure.
Example 3
A method for increasing fiber of heating non-combustible smoke pulp comprises the following steps:
(1) preparing materials according to the following mass ratio:
the tobacco powder with the particle size of 200 meshes is 70 percent
3 percent of fibrilia
7 percent of straw fiber
2 percent of konjac glucomannan
2 percent of carboxymethyl cellulose
Butanediol 8%
8% of ethylene glycol;
(2) comprises the following steps:
(21) feeding the fiber raw material into a hydrapulper, and performing pulping in an environment with the temperature of 30 ℃ to obtain 1% of pulping slurry by mass concentration;
(22) feeding the disintegrated pulp obtained in the step (21) into a pulping machine, and pulping and defibering at the temperature of 30 ℃ to obtain defibered pulp with the beating degree of 70 DEG SR, the fiber length of 0.1-8mm and the mass concentration of 5%;
(23) uniformly mixing the adhesive and the smoke agent, and adding water for mixing for 40min at the temperature of 30 ℃ to prepare adhesive liquid with the mass concentration of the adhesive being 12% and the mass concentration of the smoke agent being 10%;
(24) adding the viscose liquid obtained in the step (23) into the defibering slurry obtained in the step (22), and uniformly mixing to obtain a mixture;
(25) adding tobacco powder and water into the mixture obtained in the step (24), stirring and mixing for 8min at the temperature of 30 ℃, and preparing tobacco slurry with the solid content of 16%;
(26) carrying out vacuum defoaming treatment on the tobacco slurry mixed in the step (25) for 8min under the pressure of 50kPa to prepare finished slurry;
(27) and (3) feeding the tobacco slurry obtained in the step (26) into a conventional flow-slurry dryer to carry out conventional flow-slurry drying, so as to obtain the tobacco sheets which are not burnt under heating, wherein the thickness of the tobacco sheets is 0.20mm, the quantitative rate is 205 g/square meter, the tensile strength is 900N/m, and the sheets are observed to have uniform fiber distribution, smooth surfaces, no granular sensation, good uniformity and loose structures.
Example 4
A method for increasing fiber of heating non-combustible smoke pulp comprises the following steps:
(1) preparing materials according to the following mass ratio:
the particle size of the tobacco powder is 75 percent of 300 meshes
2 percent of wood fiber
Tobacco fiber 6%
2 percent of bamboo fiber
1 percent of carrageenan
Guar gum 1%
1 percent of carboxyethyl cellulose
Propylene glycol 5%
Ethylene glycol 4%
3% of sorbitol;
(2) comprises the following steps:
(21) feeding the fiber raw material into a hydrapulper, and performing pulping in an environment with the temperature of 60 ℃ to obtain 1% of pulping slurry by mass concentration;
(22) feeding the disintegrated pulp obtained in the step (21) into a pulping machine, and pulping and defibering at the temperature of 60 ℃ to obtain defibered pulp with the beating degree of 60 DEG SR, the fiber length of 0.1-8mm and the mass concentration of 10%;
(23) uniformly mixing the adhesive and the smoke agent, and adding water for mixing for 10min at the temperature of 40 ℃ to prepare adhesive liquid with the mass concentration of the adhesive being 12% and the mass concentration of the smoke agent being 10%;
(24) adding the viscose liquid obtained in the step (23) into the defibering slurry obtained in the step (22), and uniformly mixing to obtain a mixture;
(25) adding tobacco powder and water into the mixture obtained in the step (24), stirring and mixing for 2min at the temperature of 40 ℃, and preparing tobacco slurry with the solid content of 16%;
(26) carrying out vacuum defoaming treatment on the tobacco pulp mixed in the step (25) for 15min under the pressure of 10kPa to prepare finished pulp;
(27) and (3) feeding the tobacco slurry obtained in the step (26) into a conventional flow-slurry dryer to carry out conventional flow-slurry drying, so as to obtain the tobacco sheets which are not burnt under heating, wherein the thickness of the tobacco sheets is 0.20mm, the quantitative amount is 260 g/square meter, the tensile strength is 445N/m, and the sheets are observed to have uniform fiber distribution, transparent sheets, smooth surfaces and poor bulk.
Comparative example 1
Example 1 was repeated except that the binder, the smoke agent, the tobacco powder and water were added one by one to the fiber slurry and mixed for 10min, the sheet made by casting and drying had a thickness of 0.20mm, a basis weight of 198g/m2, a tensile strength of 580N/m, a "wire-drawing" phenomenon occurred during the flow-on, defects occurred on the sheet surface, part of the adhesive was not completely dissolved, the surface uniformity was poor, and the fibers were flocculated.
Comparative example 2
Example 2 was repeated except that the tobacco powder was added and mixed for 30min, the temperature was controlled at 50 ℃ and the sheet obtained by casting and drying had a thickness of 0.20mm, a basis weight of 260g/m2, a tensile strength of 740N/m, a smooth and shiny surface, a dark color and a poor bulk, and was easily disintegrated after drying.
Comparative example 3
Example 3 was repeated except that the particle size of the tobacco powder was changed to 60 mesh, the sheet obtained by casting and drying had a thickness of 0.22mm, a basis weight of 192g/m2, a tensile strength of 340N/m, a poor uniformity of the sheet, a rough surface and many surface defects.
Comparative example 4
Example 4 was repeated except that the particle size of the tobacco powder was changed to 60 mesh, the sheet obtained by casting and drying had a thickness of 0.22mm, a basis weight of 192g/m2, a tensile strength of 340N/m, poor uniformity of the sheet, rough surface and many surface defects.
Therefore, the process provided by the invention can be used for continuously and stably producing the heating non-combustible tobacco sheets, the defects in the production and preparation process of the heating non-combustible tobacco raw material slurry are effectively reduced, the production efficiency is improved, the production quality is stabilized, the physical indexes of the heating non-combustible tobacco sheets are improved, and the product quality is improved.
In the above description, it should be noted that the present invention is not limited to the above embodiments, and the present invention is not limited to the above embodiments.
Claims (6)
1. A method for increasing fiber of heated non-combustible tobacco pulp is characterized by comprising the following steps:
(1) preparing materials according to the following mass ratio:
60 to 83 percent of tobacco powder
4 to 12 percent of fiber raw material
1 to 6 percent of adhesive
12 to 25 percent of smoke agent
The total of the components is as follows: 100 percent;
(2) comprises the following steps:
(21) feeding the fiber raw material into a hydrapulper for pulping to obtain the pulping slurry with the mass concentration of 1-18%;
(22) feeding the disintegrated pulp obtained in the step (21) into a pulping machine for pulping and defibering to obtain defibered pulp with the beating degree of 40-100 DEG SR;
(23) uniformly mixing the adhesive and the smoke agent, and adding water to prepare adhesive liquid with the mass concentration of the adhesive being 1-12% and the mass concentration of the smoke agent being 10-90%;
(24) adding the viscose liquid obtained in the step (23) into the defibering slurry obtained in the step (22), and uniformly mixing to obtain a mixture;
(25) adding tobacco powder and water into the mixture obtained in the step (24), stirring, dispersing and uniformly mixing to prepare tobacco slurry with the solid content of 10-25%;
(26) carrying out vacuum defoaming on the tobacco pulp obtained in the step (25) to prepare finished pulp;
(27) and (5) delivering the finished pulp obtained in the step (26) to a pulp flow dryer for pulp flow drying to obtain the non-combustible tobacco slice.
2. The method for fiber-adding of heated non-combustible flue gas slurry according to claim 1, wherein: the fiber raw material in the step (1) is one or more of wood fiber, tobacco fiber, hemp fiber, bamboo fiber, sugarcane fiber, straw fiber and cotton fiber, and the mixture ratio of the wood fiber, the tobacco fiber, the hemp fiber, the bamboo fiber, the sugarcane fiber, the straw fiber and the cotton fiber is arbitrary.
3. The method for fiber-adding of heated non-combustible flue gas slurry according to claim 1, wherein: the adhesive in the step (1) is one or more of guar gum, carboxymethyl cellulose, carboxyethyl cellulose, xanthan gum, carrageenan, konjac glucomannan, chitosan and modified starch, and the mass ratio of the guar gum, the carboxymethyl cellulose, the carboxyethyl cellulose, the xanthan gum, the carrageenan, the konjac glucomannan and the modified starch is arbitrary.
4. The method for fiber-adding of heated non-combustible flue gas slurry according to claim 1, wherein: the smoke agent in the step (1) is one or more of glycerol, ethylene glycol, propylene glycol, sorbitol and butanediol, and the mass ratio of the two or more is arbitrary.
5. The method for fiber-adding of heated non-combustible flue gas slurry according to claim 1, wherein: the granularity of the tobacco powder in the step (1) is 80-400 meshes.
6. The method for fiber-adding of heated non-combustible flue gas slurry according to claim 1, wherein: the solid content of the finished slurry prepared in the step (26) is 10-25%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113115973A (en) * | 2021-04-21 | 2021-07-16 | 河南卷烟工业烟草薄片有限公司 | Preparation method of reconstituted tobacco sheet base for heating cigarettes |
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