WO2011127679A1 - Sheet for cigarette, preparation method thereof, and cigarette - Google Patents

Abstract

A sheet for a cigarette, a preparation method thereof, and a cigarette are disclosed. The sheet for cigarette is made from tea leaf or tea stalk. The preparation method thereof includes the following steps: soaking the tea leaf or tea stalk in water of 60-80℃ or a room temperature to obtain a swollen tea leaf or tea stalk; twisting the swollen tea leaf or tea stalk to obtain a coarse fiber of the tea leaf or tea stalk; washing the coarse fiber of the tea leaf or tea stalk in water of 60-80℃ or a room temperature to obtain a fiber of the tea leaf or tea stalk; grinding the fiber of the tea leaf or tea stalk into a pulp of the tea leaf or tea stalk; mixing the pulp of the tea leaf or tea stalk and a pulp of a reinforced fiber to make a final pulp; manufacturing a sheet base with the final pulp; and drying for the first time, coating, and drying for the second time the sheet base to obtain the sheet for cigarette. The method also includes the step of adding a harm reduction agent when pulping and/or coating the sheet base. The sheet for cigarette can solve the problems that harm reduction effect is limited and additive is not stable in the prior art, thus achieving harm reduction.

Description

 Tobacco sheet, preparation method thereof and cigarette

Technical field

 The invention relates to the technical field of cigarette processing, in particular to a sheet for tobacco, a preparation method thereof and a cigarette. Background technique

 In recent years, the global anti-smoking campaign has been growing, and the social pressure on the tobacco industry is increasing. In order to reduce the harm of tobacco products to human health, the world tobacco industry has also increased its research on harm reduction technology in the process of cigarette processing. At present, the most extensive harm reduction technology is the development of additives with harm reduction (known in the field as "harming additives,") and applied to filters and cigarette cut tobacco.

 Studies have shown that: Tea contains more than 300 kinds of chemicals, including caffeine, tea and its derivatives, as well as vitamin E, vitamin C, etc., the use of tea in the production of cigarettes, the use of tea polyphenols and other substances can be used Achieve the purpose of harm reduction. Therefore, the prior art often extracts these active ingredients of tea leaves and other Chinese herbal medicines as additives for harm reduction. For example: extracting tea leaves and other Chinese herbal medicines by reflux extraction with solvent to prepare extracts by pressure or under reduced pressure, adding appropriate amount of honey to add tobacco additives, and dissolving the prepared additives in a certain amount of distilled water, ethanol or propylene glycol or After mixing the solution, it is sprayed on the tobacco or stem to make a cigarette; for example: the green tea is made into a tea filter and docked with the cigarette to selectively reduce free radicals, nitrosamines, etc. in the smoke. Harmful substances are inhaled to reduce the harm of smoking to the human body.

However, when the above-mentioned additive for the harm reduction is added to the cut tobacco, if the additive used is a liquid additive, the amount of addition must be large enough to achieve the harm reduction effect, but since the tobacco is difficult to absorb a large amount of the agent, the amount of the additive is limited, thereby The effect of the harm reduction is affected; if the additive used is a solid additive, the solid additive is easily detached from the tobacco, and the addition amount of the additive cannot be ensured, so that the harm reduction effect cannot be ensured. For the tea filter, because the tea is too fragrant, it is difficult to coordinate with the tobacco flavor, and as the suction process progresses, the tar in the mainstream smoke will soon cover the filter, and the active site on the filter Covered to reduce the damage effect of the filter; in addition, this tea filter can only reduce the harmful components in the mainstream smoke, but has no effect on the sidestream smoke with harmful components far higher than the mainstream smoke. Summary of the invention

 The invention provides a flake sheet, which is added with a harm reducing additive, can be directly added to the shredded tobacco, and can even be directly used for processing cigarettes, so that the harm reducing component of the harm reducing additive is used as a carrier by using the flake sheet as a carrier. The use of cigarettes is effectively utilized, which solves the problem that the harm reduction effect of the harm reduction additive in the prior art is limited and unstable, and is beneficial to the protection of smokers.

 The present invention still further provides a cigarette to which the above-mentioned tobacco sheet is added, which is advantageous for reducing the damage suffered by the smoker.

 The present invention also provides a method of preparing the above-mentioned tobacco sheet.

 The present invention provides a sheet for tobacco using a tea leaf or a tea stem as a raw material by the following method, and the preparation method comprises the following steps:

 The tea or tea stem is placed in water at 60-80 ° C for 30-30 minutes to obtain tea leaves or tea stem swelling, or the tea or tea stem is placed in normal temperature water for time. Soaking for 0.5-6 hours to obtain tea or tea stem swelling;

 The tea or the tea stem swell is subjected to silk reeling to obtain crude fiber of tea leaves or tea stalks;

 The obtained tea or tea stem crude fiber is placed in water at 60-80 ° C for a washing process of 20-30 minutes to obtain tea leaves or tea stem fibers, or the tea or tea stem crude fiber is placed at room temperature. Washing in water for 30-60 minutes to obtain tea or tea stem fibers;

 The tea or tea stem fiber is refining to prepare a tea or tea stem slurry;

 The tea or tea stalk slurry is mixed with the reinforced pulp slurry obtained by the refining treatment to prepare a slurry, so that the content of the reinforced fiber slurry in the slurry is 0-40 wt%;

 And forming the slurry into a sheet base, and coating the sheet base for the first drying, coating and the second drying treatment to obtain the tobacco tea leaf sheet;

 The above method also includes a process of preparing a slurrying process and/or adding a harm reducing additive to the sheet-based coating process.

 The harm reduction additive used in the present invention is a common additive commonly known in the cigarette industry, and the selection and addition amount of the specific kind can be determined according to the prior art. Generally, the mass percentage of the harm reduction additive and the tobacco sheet can be Determined to be 0.001 to 40%.

The present invention also provides a cigarette comprising at least a tobacco sheet processed using the above-mentioned tobacco sheet. Preferably, in the cigarette provided by the present invention, the content of the tobacco sheet filament is The flammable part of the cigarette is 3 to 100% of the mass, and the rest is cut tobacco.

 The tobacco sheet provided by the invention can be directly applied to cigarettes. Specifically, if necessary, the flakes and the tobacco tea flakes can be respectively shredded, and then mixed in a certain ratio, or the flakes and the tobacco tea flakes can be pressed. After mixing in a certain ratio, the yarn is shredded together, and then the mixed yarn is rolled into a cigarette. Of course, the cigarette provided by the present invention can also be processed only by using the above-mentioned tobacco sheet (the content of the tobacco sheet is

100%), that is, to become a more fashionable safe and healthy cigarette. When the cigarette of the present invention is used, the good burning property of the tobacco sheet can improve the burning speed of the cigarette, and reduce the release amount of harmful substances such as carbon monoxide generated during the combustion of the cigarette, thereby reducing the harm; The harm reduction effect is provided by the harm-reducing substance contained in the flake raw material itself, such as tea polyphenol, etc., and the harm-reducing additive is added in the process of preparing the flake flakes, and the harm-reducing additive is added to the flake flakes as a carrier. In the cigarette, while further improving the harm reduction effect of the cigarette, the various defects of adding the harm reduction additive to the cigarette are overcome. DRAWINGS

 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some specific embodiments of the present invention, and those skilled in the art can also propose different modifications to them without any creative work.

 1 is a flow chart of a method for preparing a sheet for tobacco according to a first embodiment of the present invention;

 2 is a flow chart of a method for preparing a sheet for tobacco provided in Embodiment 2 of the present invention;

 3 is a flow chart of a method for preparing a cigarette according to a fourth embodiment of the present invention. detailed description

 The technical solutions of the present invention will be clearly and completely described in conjunction with the specific embodiments and corresponding drawings of the present invention, but the following embodiments are not to be construed as The scope of the invention can be implemented, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical scheme of the invention provides a preparation method for preparing flake sheets and a papermaking process in the papermaking industry There are certain similarities, so it can be implemented with reference to or using related equipment in the papermaking process, but those skilled in the art should understand that the functions of various devices in the papermaking process and the position in the technical solution of the present invention can be based on Adaptation changes are made by different processing processes and processing conditions.

 Embodiment 1

 1 is a flow chart of a method for preparing a sheet for tobacco according to a first embodiment of the present invention. As shown in FIG. 1, the method of the embodiment includes:

 Step 11: The tea or tea stem is placed in hot water at 60-80 ° C for 20-30 minutes to obtain tea or tea stem swelling, or the tea or tea stem is placed in normal temperature water ( In the present invention, also referred to as room temperature water), the soaking treatment is carried out for 0.5-6 hours to obtain tea leaves or tea stem swelling; specifically, the selected tea leaves or tea stems can be placed at 60-80 ° C. Soak for 20-30 minutes in the hot water soaking tank, or soak the selected tea or tea stems in a soaking pool filled with room temperature water for 0.5-6 hours to swell the fibers in the tea leaves or tea stems. The tea or tea stems selected may be tea leaves or tea stems of oolong tea, green tea, black tea or green tea, or tea leaves or tea stems of other teas, which is not limited in this embodiment.

 It should be noted that the liquid used for soaking tea leaves or tea stems in this embodiment is hot water or room temperature water, and the solvent extraction and separation technology is usually adopted in the preparation process of the existing papermaking tobacco sheets, which is bound to introduce new ones. The chemical reagent causes the obtained tobacco sheet to contain chemical residues, and the application to the cigarette affects the smoking taste of the cigarette, and also affects the harm reduction effect of the tobacco sheet. Therefore, in order to ensure the prepared tobacco sheet is applied to the cigarette In the present embodiment, hot water or normal temperature water is used as the soaking solvent. Of course, the solution of the present invention can also select water soaking materials higher than room temperature but not higher than 80 ° C, and determine the appropriate soaking time according to the water temperature.

 Step 12, the tea or the tea stem swelling material is twisted to obtain the crude fiber of the tea or the tea stem; after the tea or the tea stem is soaked, the fiber therein has been swollen, and then the already swollen tea leaf can be conveyed by the conveying device. Or the tea stems are sent to the reeling machine for silk processing to facilitate subsequent operations.

 Step 13, the tea or tea stem crude fiber is placed in hot water at 60-80 ° C for 20-30 minutes to obtain tea or tea stem fiber, or the tea or tea stem crude fiber is placed at room temperature Washing in water for 30-60 minutes to obtain tea or tea stem fibers;

Specifically, the tea or tea stem crude fiber can be sent to a washing tank containing hot water of 60-80 ° C. 20-30 minutes of washing treatment to obtain tea or tea stem fiber, or send tea or tea stem crude fiber to a washing tank containing room temperature water for 30-60 minutes to obtain tea or tea stem fiber The purpose is to remove the miscellaneous cells and some water-soluble substances in the crude fiber of tea leaves or tea stems, such as nitrogen-containing compounds, for the purpose of purifying tea leaves or tea stem fibers.

 In the above step 13, 60-80 ° C hot water or normal temperature water is used as the washing solvent instead of the chemical reagent for the purpose of avoiding the introduction of chemical reagents in the tobacco leaf sheet, and avoiding solvent residue in the product. In order to ensure that the prepared tobacco sheet is applied to the smoking style of the cigarette and the harm reduction effect of the tobacco sheet, the separation and removal of the solvent are not required, and the operation process is completed. Of course, the solution of the present invention can also select water above room temperature, but not higher than 80 ° C as a washing solvent, and determine the appropriate washing time according to the water temperature.

 Step 14: refining the tea or the tea stem fiber to prepare a tea or tea stem slurry; specifically, the tea or tea stem fiber can be sent to a refiner by a pump for refining treatment to prepare tea or tea. Stalk slurry.

 Step 15: mixing the tea or tea stalk slurry with the reinforced fiber slurry obtained by the refining treatment to prepare a slurry. This step is used to prepare a reinforced fiber slurry for the purpose of enhancing the strength of the prepared tobacco sheet. The addition of the reinforcing fibers is selective, depending on the strength of the finished sheet obtained. In the slurry formation, the reinforcing fiber is added in an amount of 0 to 40% by weight, and the addition amount is preferably 20 to 40% by weight.

 Specifically, the process of preparing the reinforcing fiber slurry and the process of preparing the tea or tea stem slurry are two separate processes. The embodiment provides a process for preparing a reinforced fiber slurry: a fiberboard of a selected material (for example, a wood fiberboard) is sent to a pulper for pulping, and then the pulped reinforced fiber is sent to a refiner. The refining is carried out to obtain a reinforced fiber slurry which can be used in the present invention. The preparation of the reinforced fiber slurry can be carried out by a pulping method in a papermaking process, and a fiberboard which can be used for cigarettes from a safe and sucking mouthfeel can be selected as a raw material, and thus this embodiment will not be described in detail.

Wherein, the process of preparing the pulp comprises: firstly, the tea or tea stem slurry and the reinforcing fiber slurry can be fed into the batching tank through the conveying pipe to be thoroughly mixed; then, the mixed tea or tea stem slurry and strengthening The fiber slurry is sent to the flushing tank, and the filler (such as light calcium carbonate) is added and diluted with water to a preset concentration. The preset concentration refers to the solid content of the slurry, which can be set according to specific needs; The pump will be diluted, mixed tea or tea stalk slurry and reinforced fiber slurry The material is sent to a high-level tank, and a retention aid (such as guar gum) is added thereto and uniformly mixed to obtain a slurry. This step provides the slurry required for the subsequent papermaking process. Among them, the high-position box can play the role of stabilizing the slurry pressure; the role of the retention aid is to increase the retention rate of the slurry into the net, enhance the water filtration, to facilitate the papermaking, reduce the fine fibers and filler in the white water, to alleviate The burden of wastewater treatment. The retention aid should be a retention aid in accordance with the tobacco industry standard known in the art, and the present invention is not limited to the specific selection thereof, and the addition amount thereof is a conventional addition amount of the retention aid.

 Specifically, the present embodiment may add a harm reducing additive to the above-mentioned pulping section to prepare a tobacco sheet containing the harm reducing additive, and adding a harm reducing additive to the pulping section is one of the optional addition positions.

 In step 16, the slurry is formed into a sheet base, and the sheet base is subjected to a first drying, coating and second drying treatment to obtain a sheet for tobacco to be applied to the cigarette.

 This step is for copying the slurry into a sheet base, and drying the sheet base, for example, to obtain a sheet base having a water content of 15 to 30%. Applying a coating liquid on the dried sheet base (the selection and use of the coating liquid are all handled according to conventional techniques in the cigarette manufacturing industry), and drying the coated sheet base again. A sheet of tobacco is produced. For example, the sheet may be subjected to coating drying treatment to obtain a sheet of tobacco having a water content of 10 to 13% and a thickness of 0.3 to 0.4 mm.

 Wherein, the drying treatment comprises directly drying the sheet base formed by the copying to remove most of the moisture in the sheet base, and then feeding the dried sheet base into the coating tank, The prepared coating liquid is coated on the sheet base in the cloth groove, and then the sheet base of the coating liquid is dried again to prepare a tobacco sheet conforming to the standard, for example, preparing a water content. 10 to 13% of tobacco sheets.

 Specifically, the present embodiment can also include a process of adding a harm reducing additive in a coating section for making a sheet base as needed.

 It should be noted that the technical solution of the present invention must select at least one of the above-mentioned pulping section and the coating and coating section to add a harm reducing additive to prepare a tobacco sheet containing the harm reducing additive. The harm reduction additive may be any feasible substance which can be used for a cigarette product and has an adsorption effect on harmful components in the flue gas, such as zeolite, mesoporous material, cyclodextrin, etc., and the technical solution of the present invention does not limit this.

The preparation method of the tobacco sheet provided in the embodiment is prepared by using tea leaves or tea stems as raw materials, and the prepared tobacco sheet can be directly applied to cigarettes, and specifically, the flakes and the flake sheets are respectively shredded. Then, the mixture is mixed in a certain ratio, or the flakes and the flakes are mixed in a certain ratio and then shredded together, and then the mixed yarn is rolled into a cigarette. Since the tea component is contained, the combustion property of the tobacco sheet can be improved, and the burning speed of the cigarette can be increased, and the amount of harmful substances such as CO generated during the combustion of the cigarette can be reduced, thereby reducing the damage. Further, the present invention uses tea leaves or tea stems as raw materials to prepare flake flakes, and can further utilize the harmful substances contained in tea leaves or tea stems to further improve the harm reducing effect, for example, tea polyphenols in tea can reduce harm effect.

 At the same time, the harm reduction additive is added to the tobacco sheet of the embodiment, and the harm reduction effect of the tobacco sheet in the cigarette can be further improved by using the harm reduction additive; in addition, the tobacco sheet is used as a carrier to reduce the damage additive. In cigarettes, unlike the prior art, the method of adding the harm reducing additive directly to the cut tobacco or the filter can avoid various defects of the prior art, for example: there is no tar covering filter in the mainstream smoke to reduce the additive activity. The problem is that there is no problem that the solid additive is sprayed on the tobacco and it is easy to fall off, or the dose of the spray liquid additive is limited.

 Further, the technical solution of the present invention applies the tobacco sheet containing the harm reduction additive to the cigarette, and fully exerts the function of the harm reduction substance contained in the tea or the tea stem itself and the additive harm reduction additive while increasing the burning speed of the cigarette. It can effectively reduce the content of harmful substances in the generated flue gas, not only reduce the content of harmful substances in the mainstream smoke, and also reduce the content of harmful substances in the sidestream flue gas. Therefore, the tobacco of the present invention is used. The application of flakes to cigarettes will simultaneously reduce the harmful effects of mainstream smoke and sidestream smoke.

 Based on the above technical solutions, the present embodiment provides several embodiments for adding a harm reducing additive in the above steps 15 and 16, as follows:

One embodiment is: feeding the tea or tea stem slurry and the reinforcing fiber slurry into the batching tank for thorough mixing to obtain a mixed slurry; then feeding the mixed slurry into the flushing tank, adding a filler (such as light weight) Add calcium hydroxide) and add water to dilute the additive. Specifically: selecting a detrimental additive, such as a zeolite, dissolving or dispersing the debatation additive in water, and adding it to the slurry tank together with a filler such as light calcium carbonate; mixing the slurry, filler, and harm After the additive is uniformly mixed, it is sent to the high-level box through the slurry pump; the retention aid is added to the high-position box and mixed and hooked to obtain a slurry; then the slurry is sent to the forming wire for papermaking to form a sheet containing the harm-reducing additive. After drying the sheet base containing the harm reduction additive to remove excess water, it is sent to a coating tank to apply the prepared coating liquid onto the sheet base, and the sheet base is dried again to prepare Containing harm reduction additives Tobacco sheet.

 In another embodiment, after the slurry is added and diluted to a desired concentration, the mixed slurry is pumped from the slurry tank into the high-position tank, and the retention aid (such as guar gum) is added to reduce the damage. additive. Specifically, the harm-damping additive is dissolved or dispersed in water, and added to the retention aid solution and mixed with the retention aid, and then added to the high-position box and mixed with the mixed slurry to obtain a slurry; The slurry is processed by a forming wire to form a sheet base, and the sheet for the addition of the damage-reducing additive is subjected to the first drying, coating and the second drying treatment to prepare a tobacco sheet containing the harm reducing additive. .

 Still another embodiment is: after the abatement additive is dissolved or dispersed in water, it is uniformly mixed with the coating liquid, and then the above mixture is applied onto a sheet base to prepare a sheet base having a harm reducing additive. Specifically, the coating liquid and the harm reducing additive are mixed, and the mixed solution is applied to the first dried sheet substrate (the sheet base may already contain the harm reducing additive), and then the coating is applied. The sheet base on which the harm reduction additive is applied is subjected to a second drying treatment to prepare a tobacco sheet containing the harm reduction additive which satisfies the requirements.

 The above describes several ways of adding a harm reduction additive in the preparation process of the tobacco sheet. In the present invention, according to the nature of the harm reduction additive to be added and the requirements for preparing the cigarette, the addition of the harm reduction additive may adopt any of the above-mentioned addition methods. It can also be any combination of the above several addition methods. When the harm reducing additive is added at a plurality of positions, the content of the harm reducing additive in the tobacco sheet is the total content.

 It is to be noted that, in order to ensure that a new chemical reagent is not introduced into the flake sheet, the solvent used in the dissolution or dispersion of the harm reducing additive in each embodiment of the present embodiment is water, but is not limited thereto. It is preferably water.

 Further, the additive amount of the harm reducing additive (for example, zeolite or cyclodextrin) in the flake sheet prepared according to the technical scheme of the present invention may range from 0.1 to 10% by mass of the flake sheet, but the embodiment is not limited. The amount of harm reduction additive can be selected according to the actual situation.

 Embodiment 2

2 is a flowchart of a method for preparing a sheet for a cigarette according to a second embodiment of the present invention. This embodiment can be implemented based on the first embodiment. The difference between the embodiment and the embodiment is as shown in FIG. 2, which is shown in FIG. Preparation methods include: Step 21: The tea or tea stem is placed in hot water at 60-80 ° C for 20-30 minutes to obtain tea or tea stem swelling, or the tea or tea stem is placed in normal temperature water. Soaking treatment for 0.5-6 hours to obtain tea or tea stem swelling;

 In this embodiment, the amount of hot water or room temperature water in the immersion treatment is preferably 10-15 times the weight of the tea or tea stem, so as to more fully soak the tea or tea stem without wasting water resources. .

 Step 22, separating the tea or the tea stem swelling material from the soaked hot water or the normal temperature water, and returning the separated hot water or the normal temperature water to the soaking treatment process for recycling;

 In the preparation method of the present embodiment, when separating tea leaves or tea stems, the separated hot water or room temperature water is sent back to the soaking pool for recycling, thereby achieving the purpose of saving water resources. Of course, in order to ensure the purity of the hot water or normal temperature water used in the immersion tank, the separated hot water or normal temperature water should not be recycled indefinitely, preferably 2-3 times, that is, when hot water or room temperature water is After recycling for 2-3 times, it can be discharged after treatment.

 Step 23, the tea or the tea stem swelling material is twisted to obtain the tea or tea stem crude fiber; Step 24, the tea or tea stem crude fiber is placed in hot water at 60-80 ° C for 20-30 Minute washing treatment to obtain tea leaves or tea stem fibers, or placing tea or tea stem crude fibers in normal temperature water for a washing time of 30-60 minutes to obtain tea leaves or tea stem fibers;

 In the present embodiment, the amount of hot water or room temperature water in the washing treatment is preferably 10-15 times the weight of the tea or tea stem crude fiber, so as to pass more sufficient tea or tea without wasting water resources. The stem is subjected to a washing treatment to remove the miscellaneous cells and a part of the water-soluble substance contained therein, such as a nitrogen-containing compound, for the purpose of purifying the tea leaf or the tea stem fiber. .

 Step 25, separating the tea or tea stem fiber from the washed hot water or normal temperature water, and returning the separated hot water or normal temperature water to the soaking treatment process for recycling;

 Specifically, this step is the same as the implementation and effect of step 22, and this step will not be discussed in detail. Step 26, the tea or tea stem fiber is subjected to a first refining process to obtain a crude pulp;

 Specifically, the tea leaves or tea stem fibers can be sent to a high-concentration mill for refining by a pump, that is, the first refining treatment to obtain a brown pulp.

Step 27, the second slurry is subjected to a second refining treatment to obtain a fine pulp, and the fine pulp is a tea or tea stem slurry; Specifically, the coarse slurry is further refined by feeding the double pulp, that is, the second refining treatment, to obtain a fine slurry, and the second slurry is a tea or tea stem slurry.

 Step 28, refining the reinforced fiberboard to prepare a reinforced fiber slurry;

 This step is used to prepare a reinforced fiber slurry for the purpose of enhancing the strength of the prepared tobacco sheet. The addition of the reinforcing fibers is selective, depending on the strength requirements of the finished sheet. Due to the short fiber and the high content of miscellaneous cells of tea or tea stems, the strength of the finished product is poor during the papermaking process. Therefore, depending on the type of tea selected, it is necessary to add an appropriate amount of long fibers to most tea or tea stem pulp to increase the strength of the sheet. In the present embodiment, by adding a reinforcing fiber slurry, the reinforcing fiber is used to contribute to the preparation of a sheet for tobacco having a strength in accordance with the requirements of the cigarette processing technology. The addition amount of the reinforcing fiber slurry is generally controlled to 0 to 40% by weight based on the total amount of the slurry, and the addition amount is preferably 20 to 40% by weight.

 Specifically, the preparation process can be implemented by referring to the pulping process in the papermaking, which belongs to the prior art, and is not discussed in detail in this embodiment.

 Step 29, mixing the tea or tea stem slurry and the reinforcing fiber slurry to prepare a slurry, and adding a harm reducing additive as needed;

 For example: Tea or tea stalk slurry and reinforced fiber slurry can be fed into the batching tank through a conveying pipe to be thoroughly mixed to obtain a mixed slurry. Wherein in order to thoroughly mix the two slurries and achieve the concentration required for the papermaking, the mixed slurry is further sent to the flushing tank, and a filler (such as light calcium carbonate) is added and diluted with water to the desired concentration; Then, the obtained mixed slurry is pumped from the flushing tank into the high-position tank, and the retention aid is added to the high-position tank, and the mixture is uniformly mixed to prepare a slurry, which is prepared for the papermaking process.

 In this step 29, when the filler is added to the mixed slurry, the harm reducing additive may be added. Specifically, the harm reducing additive is dissolved or dispersed in water, mixed with the filler, and then added to the mixed slurry. Forming a slurry; when the retention aid is added to the mixed slurry, adding a harm reduction additive, specifically, dissolving or dispersing the harm reduction additive in water, mixing with the retention aid, and then adding the mixed slurry together Made into a pulp.

 Step 30, the slurry is formed into a sheet base, and the sheet base is subjected to the first drying, coating and the second drying treatment, and the harm-reducing additive is added to the coating section of the sheet-making base as needed. A sheet of tobacco containing a harm reducing additive is taken.

Based on the above step 29, in this step 30, the slurry is sent to the forming wire for implementation. The sheet is formed to form a sheet base; at this time, it is also required to dry the sheet base to remove most of the moisture in the sheet base, and then apply the coating liquid through the coating tank after the drying treatment. Finally, the sheet base of the coating liquid is dried again to obtain a leaf sheet for tobacco. Wherein, the coating liquid functions to increase the amount of aroma, remove the impurities, increase the concentration of the smoke, reduce the irritation, and improve the aftertaste and the comfort of the mouth. The aqueous solution of the substance having the above-mentioned effects can be used as the coating liquid in the present embodiment. Specific selection and processing are conventional techniques in the field of cigarette production.

 Specifically, in this step 30, the harm-reducing additive may be dissolved or dispersed in water, mixed uniformly with the coating liquid, and applied together to the sheet base.

 The tobacco tea flakes containing the harm reduction additive can be prepared by using the above three methods. In the present invention, any of the above-mentioned addition methods can be used for adding the harm reduction additive, or any combination of the above several addition methods can be added, and the addition and subtraction can be added. The manner of harmful additives is not limited to this. When the harm reduction additive is added at a plurality of locations, the content of the harm reduction additive in the tobacco sheet is the total content.

 It should be noted that the process of preparing the reinforcing fiber slurry in the step 28 in the embodiment and the process of preparing the tea or tea stem slurry described in the steps 21 to 27 are two independent processes, which may be successive The order of the operations, but does not limit the order of its implementation, but also the relationship of parallel operations. The order of the steps in the preparation method of the present embodiment is only a preferred mode. For example, the reinforcing fiber slurry may be prepared first, and then the tea or tea stem slurry may be prepared; or the reinforcing fiber slurry may be simultaneously prepared. Material and tea or tea stem slurry.

 The third embodiment of the present invention provides a sheet for tobacco which can be prepared according to the methods provided in the first embodiment and the second embodiment of the present invention.

 A fourth embodiment of the present invention provides a cigarette, that is, a flammable portion of the cigarette (in the case of a cigarette with a filter, the portion other than the filter) includes at least a portion of the cigarette prepared by the method of the first embodiment or the second embodiment. Sheet. For common cigarettes, including cigarette paper, shredded tobacco, and filter, the shredded tobacco is wrapped in a cigarette paper and attached to the filter. The tobacco shredded tobacco of the present invention is mixed with the tobacco flakes cut by the tobacco flakes, and the flake flakes are wrapped together with the shredded tobacco in the cigarette paper, specifically, the flakes and the flake flakes respectively The shreds are then mixed in a certain ratio, or the flakes and the flakes are mixed in a certain ratio and then shredded together, and then the mixed yarn is rolled into a cigarette.

3 is a flow chart of a method for preparing a cigarette according to a fourth embodiment of the present invention. The present embodiment is based on the method for preparing a tobacco sheet according to the above embodiment. As shown in FIG. 3, the cigarette preparation method of the embodiment is shown in FIG. Includes:

 Step 31: preparing a tobacco sheet containing a harm reduction additive by using tea or tea stem as a raw material;

 For the detailed process of this step, refer to Embodiment 1 or Embodiment 2.

 In step 32, the flakes and the obtained flake flakes are respectively shredded, and then mixed in a certain ratio, or the flakes and the obtained flake flakes are mixed in a certain ratio and then shred together, and then the mixed silk rolls are rolled. Made into cigarettes.

 Wherein, the process of shredding the tobacco sheet can be carried out by using a shredding process and equipment in the cigarette processing process, and the cut tobacco shred yarn is preferably substantially the same length and width as the shredded tobacco to be mixed with the ordinary shredded tobacco. Similarly, the process of shredding the flakes and the flakes in a certain ratio and then cutting them together can also be carried out by the shredding process and equipment in the cigarette processing process.

 In the present embodiment, in the mixture of the tobacco sheet and the shredded tobacco, the content of the shredded tobacco sheet may be from 3 to 100% by weight of the combustible portion of the cigarette, and the mixing ratio may be determined according to different cigarette requirements. When the flammable portion of the cigarette is entirely processed from the tobacco sheet (the tobacco sheet has a silk content of 100% by weight), the obtained cigarette is a safe cigarette completely free of cut tobacco. Of course, in consideration of the harm of the cigarette to the human body and the preference and demand of the smoker, and the characteristics of the different tea raw materials, in the cigarette provided by the present invention, the amount of the flake filament to be added is preferably controlled to be 20-60% by weight. The combustibility of the tea leaf filament is much higher than that of the tobacco. Therefore, the combustibility of the shredded tobacco with the added tobacco shred is improved. When the cigarette is burned, it burns more fully, thereby reducing the combustion process. The amount of harmful substances such as CO can be reduced, that is, the harmful substances in the mainstream smoke and the sidestream smoke can be reduced at the same time, and the harm reduction effect is further obtained; further, the cigarettes prepared by the cigarette preparation method provided in the embodiment include the smoke contained in the cigarette The thin-walled silk is made of tea leaves or tea stems, and the harm-reducing effect of the tea or the tea stem itself can be improved, and the harm-reducing additive is added to the tobacco sheet, and the tobacco sheet is added. The carrier applies the harm reduction additive to the cigarette, and further improves the harm reduction effect, and overcomes various defects when the additive is added to the tobacco or the filter.

 Further, the cigarettes prepared in the present embodiment were subjected to a sensory evaluation test, and the test results showed that the cigarettes prepared in the present embodiment basically maintained the original flavor-absorbing style, and the tobacco flakes in different proportions were added in the flue gas. Hazardous substances such as ammonia, 3, 4-benzopyrene, phenol, crotonaldehyde, CO, hydrocyanic acid and nitrosamines were all significantly reduced.

The following is a specific experimental data to illustrate the preparation of the tobacco sheet for use in cigarettes according to an embodiment of the present invention. Function and effect.

 The oolong tea stalk is subjected to pulping, papermaking, addition of a harm reducing additive (for example, zeolite), drying, and the like to prepare a tobacco sheet for the manufacture of cigarettes, wherein the amount of the additive (zeolite) is added according to the method of the first embodiment. It is 5%. And carry out the following experiment:

 Experiment 1

 The tobacco sheet from the oolong tea stem is shredded and mixed with ordinary cut tobacco at a mass ratio of 50% to form a cigarette. After the sensory evaluation, the original smoking style of the cigarette is basically unchanged, and the smoke test results show that the ammonia in the mainstream smoke is reduced by 18.0% compared with the cigarette without the added tobacco filament, and the hydrocyanic acid is lowered. 17%, 3, 4-benzopyrene decreased by 41.7%, phenol decreased by 60.8%, crotonaldehyde decreased by 26.3%, CO decreased by 5%, nitrosamine decreased by 40%, harmful components of sidestream smoke There is also a significant reduction, and the harm reduction effect is remarkable.

 Experiment 2

 The tobacco was shredded with a sheet and mixed with ordinary cut tobacco at a mass ratio of 25% to form a cigarette. After the sensory evaluation, the original smoking style of the cigarette is basically unchanged, and the smoke test results show that the ammonia in the mainstream smoke is reduced by 16.3% compared with the cigarette without the added tobacco filament, and the hydrocyanic acid is lowered. 13.5%, 3, 4-benzopyrene decreased by 36.5%, phenol decreased by 35%, crotonaldehyde decreased by 37%, CO decreased by 6.5%, nitrosamine decreased by 35%, and harmful components of sidestream smoke It is also significantly reduced, and the harm reduction effect is obvious.

 The tea tea stalk is pulped, paper-made, added with additives (such as zeolite), dried, and the like to prepare a tobacco sheet according to the method of the second embodiment, and is used for manufacturing cigarettes, wherein the amount of the additive (zeolite) is added. It is 4%. The relevant experimental results are as follows:

 Experiment 3

 The tobacco was shredded with a sheet and mixed with ordinary cut tobacco at a mass ratio of 50% to form a cigarette. After the sensory evaluation, the original smoking style of the cigarette is basically unchanged, and the smoke test results show that the ammonia in the mainstream smoke is reduced by 16% compared with the cigarette without the added tobacco filament, and the hydrogen cyanide is lowered. 15.5%, 3, 4-benzopyrene decreased by 40.7%, phenol decreased by 58.3%, crotonaldehyde decreased by 41.3%, CO decreased by 5.5%, nitrosamine decreased by 42%, harmful components of sidestream smoke There is also a significant reduction, and the harm reduction effect is remarkable.

Experiment 4 The second type of tobacco sheet was shredded and mixed with ordinary cut tobacco at a mass ratio of 25% to form a cigarette. After the sensory evaluation, the original smoking style of the cigarette is basically unchanged, and the smoke test results show that the ammonia in the mainstream smoke is reduced by 15.5% compared with the cigarette without the added tobacco filament, and the hydrocyanic acid is lowered. 14%, 3, 4-benzopyrene decreased by 35%, phenol decreased by 54.3%, crotonaldehyde decreased by 32%, CO decreased by 4%, nitrosamine decreased by 37%, and harmful components of sidestream smoke It is also significantly reduced, and the harm reduction effect is outstanding.

 Further, it can be seen from the above experimental data that the technical solution of the present invention prepares tobacco sheets by using tea leaves or tea stems as raw materials, and applies the prepared tobacco sheets to cigarettes, not only in keeping the smoking style of cigarettes substantially unchanged. The utility model can effectively reduce the release amount of harmful substances in the mainstream smoke and sidestream smoke of the cigarette, and at the same time, can alleviate the shortage of the tobacco raw material supply in the tobacco industry, and has great social and economic benefits. In addition, a harm reduction additive is added to the flake sheet, and the harm reduction additive is applied to the cigarette by using the flake sheet as a carrier, and the damage reduction effect is further improved, and the existing additive to the cut tobacco or the filter is overcome. Defects.

 It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request  A method for preparing a sheet for tobacco, wherein the sheet for tobacco is made of tea or tea stem, and the preparation method comprises the following steps:  The tea or tea stem is placed in water at 60-80 ° C for 30-30 minutes to obtain tea leaves or tea stem swelling, or the tea or tea stem is placed in normal temperature water for time. Soaking for 0.5-6 hours to obtain tea or tea stem swelling;  The tea or the tea stem swell is subjected to silk reeling to obtain crude fiber of tea leaves or tea stalks;  The tea or tea stem crude fiber is placed in water at 60-80 ° C for a washing time of 20-30 minutes to obtain tea leaves or tea stem fibers, or the tea or tea stem crude fiber is placed in normal temperature water. Carrying out a washing treatment for 30-60 minutes to obtain tea leaves or tea stem fibers;  The tea or tea stem fiber is refining to prepare a tea or tea stem slurry;  The tea or tea stalk slurry is mixed with the reinforced pulp slurry obtained by the refining treatment to prepare a slurry, so that the content of the reinforced fiber slurry in the slurry is 0-40 wt%;  And forming the slurry into a sheet base, and performing the first drying, coating and the second drying treatment on the sheet base to prepare the sheet for tobacco;  The above method also includes the process of adding a pesticidal additive to the slurry forming section and/or to the sheet base coating station.  The method for preparing a sheet for tobacco according to claim 1, wherein the tea or tea stem slurry is mixed with the reinforcing fiber slurry obtained by refining to prepare a slurry. Includes:  The tea or tea stalk slurry and the reinforced fiber slurry are fed into a batching tank for mixing to obtain a mixed slurry;  The mixed slurry is sent to the flushing tank, the filler is added and diluted with water to a preset concentration; the mixed slurry diluted to the preset concentration is sent to the high-position tank, the retention aid is added and mixed uniformly, and the preparation is obtained. Said as pulp.  The method for preparing a sheet for tobacco according to claim 1, wherein the slurry is formed into a sheet base, and the sheet base is first dried, coated and second. The drying process to prepare the tobacco sheet comprises: And the slurry is sent to a forming wire for papermaking to form the sheet base; Performing a first drying treatment on the sheet base, and coating a coating liquid on the sheet base; and performing a second drying treatment on the sheet base coated with the coating liquid Take the sheet of tobacco.  4. The method according to claim 2, wherein when the filler is added to the mixed slurry, the method further comprises:  The harm reduction additive is added to the mixed slurry together with the filler.  The method for preparing a sheet for tobacco according to claim 4, wherein the adding the additive to the mixed slurry together with the filler is specifically:  The harm reduction additive is dissolved or dispersed in water, and mixed with the filler, and then added to the mixed slurry.  The method for producing a sheet for tobacco according to claim 2, wherein the harm-reducing additive is added together with the retention aid to the mixed slurry diluted to a predetermined concentration.  The method for preparing a sheet for tobacco according to claim 6, wherein the process of adding the harm reducing additive together with the retention aid to the mixed slurry diluted to a predetermined concentration Specifically:  The harm reduction additive is dissolved or dispersed in water, and uniformly mixed with the retention aid, and then added to the mixed slurry diluted to a predetermined concentration.  The method for preparing a sheet for tobacco according to claim 3, wherein when the coating liquid is applied to the sheet base, the method further comprises:  The damage reducing additive is coated on the sheet base.  9. The method of preparing a sheet for tobacco according to claim 8, wherein the method of coating the damage-reducing additive on the sheet base is:  The harm reduction additive is dissolved or dispersed in water, and is mixed with the coating liquid and applied to the sheet base together.  The method for producing a sheet for tobacco according to any one of claims 1 to 9, wherein the amount of the detrimental additive added is 0.001 to 40% by mass of the sheet for the sheet.  11. A sheet of tobacco prepared by the method of any of claims 1-10. 12. A cigarette characterized in that the flammable portion of the cigarette comprises at least a tobacco sheet processed using the sheet for tobacco of claim 11. The cigarette according to claim 12, wherein the tobacco flakes have a silk content of from 3 to 100% by mass of the flammable portion of the cigarette, and the balance is shredded tobacco.