CN112021634B - Preparation method of special sheet for heating cigarettes by papermaking method - Google Patents
Preparation method of special sheet for heating cigarettes by papermaking method Download PDFInfo
- Publication number
- CN112021634B CN112021634B CN202010983333.6A CN202010983333A CN112021634B CN 112021634 B CN112021634 B CN 112021634B CN 202010983333 A CN202010983333 A CN 202010983333A CN 112021634 B CN112021634 B CN 112021634B
- Authority
- CN
- China
- Prior art keywords
- tobacco
- raw material
- mixed
- pulp
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000010438 heat treatment Methods 0.000 title claims abstract description 44
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 241000208125 Nicotiana Species 0.000 claims abstract description 86
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 86
- 239000000835 fiber Substances 0.000 claims abstract description 76
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 239000002994 raw material Substances 0.000 claims abstract description 55
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000011812 mixed powder Substances 0.000 claims abstract description 23
- 238000012986 modification Methods 0.000 claims abstract description 20
- 230000004048 modification Effects 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000007935 neutral effect Effects 0.000 claims abstract description 11
- 238000009777 vacuum freeze-drying Methods 0.000 claims abstract description 10
- 239000011229 interlayer Substances 0.000 claims abstract description 9
- 239000000779 smoke Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 5
- 239000011268 mixed slurry Substances 0.000 claims abstract description 3
- 238000004537 pulping Methods 0.000 claims description 23
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 12
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 7
- 235000011187 glycerol Nutrition 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000796 flavoring agent Substances 0.000 claims description 6
- 235000019634 flavors Nutrition 0.000 claims description 6
- 239000011121 hardwood Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 239000011122 softwood Substances 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- 239000003205 fragrance Substances 0.000 claims description 4
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 3
- SQDAZGGFXASXDW-UHFFFAOYSA-N 5-bromo-2-(trifluoromethoxy)pyridine Chemical compound FC(F)(F)OC1=CC=C(Br)C=N1 SQDAZGGFXASXDW-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920001287 Chondroitin sulfate Polymers 0.000 claims description 3
- 108010010803 Gelatin Proteins 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 229940059329 chondroitin sulfate Drugs 0.000 claims description 3
- 239000008273 gelatin Substances 0.000 claims description 3
- 229940014259 gelatin Drugs 0.000 claims description 3
- 229920000159 gelatin Polymers 0.000 claims description 3
- 235000019322 gelatine Nutrition 0.000 claims description 3
- 235000011852 gelatine desserts Nutrition 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 235000010413 sodium alginate Nutrition 0.000 claims description 3
- 239000000661 sodium alginate Substances 0.000 claims description 3
- 229940005550 sodium alginate Drugs 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 240000006240 Linum usitatissimum Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005507 spraying Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 7
- 241000208202 Linaceae Species 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000001953 sensory effect Effects 0.000 description 4
- 235000019505 tobacco product Nutrition 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241001397809 Hakea leucoptera Species 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/01—Making cigarettes for simulated smoking devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
Abstract
The invention provides a preparation method of a special sheet for heating cigarettes by a paper making method, which comprises the following steps: preparing a substrate from mixed slurry containing tobacco leaf slurry, tobacco stem slurry and mixed external fiber slurry by a papermaking method papermaking technology, wherein the tobacco stem slurry and the mixed external fiber slurry are modified slurry; the modification treatment process comprises the following steps: sequentially placing raw material tobacco stalk pulp and raw material mixed outer fiber pulp into a sodium hydroxide solution and a monochloroacetic acid solution for treatment, and then washing the mixture to be neutral by using ethanol and clear water; carrying out vacuum freeze drying treatment on the substrate to obtain a freeze-dried substrate; placing the freeze-dried substrates in a laminated manner, coating the mixed powder and the atomizing agent in an interlayer through a vibrating screen to obtain a coated substrate, wherein the mixed powder and the atomizing agent are coated separately, and the mixed powder contains smoke powder, an adhesive and an inert heat conduction material; rolling the coated substrate, carrying out vacuum balance treatment, and shredding to obtain the special slice. The sheet prepared by the invention has better tensile strength, good heat conductivity and better adsorption effect on the atomizing agent.
Description
Technical Field
The invention belongs to the technical field of heating non-burning tobacco products, and particularly relates to a preparation method of a special sheet for heating cigarettes by a paper making method.
Background
The development of novel tobacco products is rapid, particularly the heating tobacco products are rapidly increased, one change of the tobacco industry is possibly caused, and the development of the novel tobacco products which are not combusted when being heated in various layouts of various large tobacco enterprises in the world is predicted to exceed the market scale of 150 hundred million dollars by 2021.
The working principle of the heating product is that the special sheet for heating the cigarette is heated to a degree which is enough to emit the fragrance of the tobacco through low-temperature heating without igniting the tobacco leaves. Under normal conditions, harmful substances are released when ordinary cigarettes are burnt at the high temperature of 350-600 ℃, and the heating temperature of the heated cigarettes is controlled below 300 ℃, so that the release of the harmful substances is greatly reduced.
At present, the special sheet for heating cigarettes by a paper making method has the defects of poor dispersibility of external fibers, low tensile strength, low thermal conductivity, poor adsorbability of an atomizing agent, insufficient atomizing effect and the like. Poor dispersion of the outer fibers can cause quality problems such as 'flower flakes' and 'white flakes' in the appearance of the prepared tobacco sheets. At present, the common practice for improving the low tensile strength is to improve the common defect by increasing the proportion of the adhesive and increasing the addition amount of the external fiber, but the addition of excessive external substances causes the appearance uniformity in the special sheet for the papermaking method to be poor and the wood smell to be heavier. For the defect that the adsorbability of the improved atomizing agent is poor and the atomizing effect is not sufficient, the current patent cn201510413496.x adopts a negative pressure vacuum suction mode during spraying to adsorb the sprayed smoke powder and glue mixture in the substrate. However, the spraying method is to spray the mixture of the smoke powder and the glue in the interlayer of the substrate at the same time, which is very easy to cause the blockage of the spray head, so that the continuity of the spraying production cannot be ensured.
Disclosure of Invention
The invention aims to provide a preparation method of a special sheet for heating cigarettes by a paper making method aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a special sheet for heating cigarettes by a paper making method comprises the following steps:
preparing a substrate from a mixed slurry containing tobacco leaf slurry, tobacco stem slurry and mixed external fiber slurry by a papermaking method papermaking technology, wherein the tobacco stem slurry and the mixed external fiber slurry are modified slurries; the modification treatment process comprises the following steps: sequentially placing raw material tobacco stalk pulp and raw material mixed outer fiber pulp into a sodium hydroxide solution and a monochloroacetic acid solution for treatment, and then washing the mixture to be neutral by using ethanol and clear water;
carrying out vacuum freeze drying treatment on the substrate to obtain a freeze-dried substrate;
placing the freeze-dried substrates in a laminated manner, coating mixed powder and an atomizing agent in an interlayer by a vibrating screen to obtain a coated substrate, wherein the mixed powder and the atomizing agent are coated separately, and the mixed powder contains smoke powder, an adhesive and an inert heat conduction material;
and rolling the coated substrate, carrying out vacuum balance treatment and shredding to obtain the special sheet for heating cigarettes by the papermaking method.
Preferably, the moisture content of the substrate is 25-35%.
Preferably, the tobacco leaf pulp is pulp subjected to the modification treatment, and the modification treatment process comprises the following steps: the raw material tobacco pulp is sequentially placed in a sodium hydroxide solution and a monochloroacetic acid solution for treatment, and then washed to be neutral by ethanol and clear water.
Preferably, the modification treatment process is as follows: soaking raw material tobacco stems and raw material mixed external fibers in water at 50-70 ℃ for 60-90 min, pulping, wherein the pulping degree is 40-60 DEG SR, and filtering to obtain raw material tobacco stem pulp and raw material mixed external fiber pulp; adding the raw material tobacco stalk pulp and the raw material mixed outer fiber pulp into a 5-10% sodium hydroxide solution, performing ultrasonic dispersion treatment for 10-20 min, then stirring at 15-30 ℃ for 20-30 min, and removing the sodium hydroxide solution by using a squeezer; then adding the materials into 0.05-0.1 mol/L monochloroacetic acid solution, and carrying out stirring reflux treatment at 85-95 ℃ for 50-60 min; then repeatedly washing with ethanol and clear water until the pH value is neutral. More preferably, the mass ratio of the tobacco stem pulp to the mixed outer fiber pulp is 10: (3-5).
Preferably, the inert heat conducting material is at least one of silicon dioxide, silicon carbide, silicon nitride and graphene.
Preferably, the atomizing agent is a mixture of glycerin, propylene glycol, ethanol, tobacco extract, flavors and fragrances. More preferably, the mass ratio of the glycerin, the propylene glycol, the ethanol, the tobacco extract and the essence is (80-100): 30-50): 10-20: (10-15): 5-10).
Preferably, the mass ratio of the smoke powder, the adhesive and the inert heat conduction material in the mixed powder is (80-100): 5-8): 3-5. More preferably, the particle size of the mixed powder is 200 to 300 meshes. More preferably, the coating amount of the mixed powder is 5-10 g/m2。
Preferably, the mixed external fiber pulp is a mixture of softwood fiber pulp, hardwood fiber pulp and flax fiber pulp. More preferably, the mass ratio of the softwood fiber pulp to the hardwood fiber pulp to the flax fiber pulp is (10-12): (6-8): (1-3).
Preferably, the temperature of the vacuum freeze drying treatment is-40 ℃ to-30 ℃, the vacuum degree is 0-10 pa, and the vacuumizing time is 12-16 h.
Preferably, the vacuum degree of the vacuum balance treatment is 10-20 pa, and the balance time is 2-3 h.
Preferably, the adhesive is at least one of CMC, sodium alginate, gelatin and chondroitin sulfate. More preferably, the viscosity of the adhesive is 4000 to 8000 cps.
Compared with the prior art, the invention has the beneficial effects that:
(1) the tobacco stem pulp and the mixed outer fiber pulp of the preparation method of the special sheet for heating cigarettes by the paper making method are modified pulp, and the modified pulp can effectively improve the dispersion uniformity of the mixed outer fiber pulp, so that more hydroxyl groups of the tobacco stem fibers and the outer fiber fibers are exposed, more hydrogen bonds are formed between the tobacco stem fibers and the outer fibers, the appearance uniformity of the surface of the substrate can be effectively improved, and the tensile strength of the substrate can be effectively improved.
(2) During the vacuum freeze drying treatment process of the substrate, a loose and porous space structure can be formed in the substrate, and the substrate is in an absolutely dry state, so that the filling of the subsequent mixed powder such as the tobacco powder and the like and the adsorption of the atomizing agent are facilitated.
(3) The invention adopts a mode of separately coating the mixed powder and the atomizing agent, and can effectively avoid the defect that the spray head is easy to block in the traditional mixed spraying process.
(4) According to the invention, the mixed powder containing the inert heat conduction material, the adhesive and the tobacco powder is coated in the laminated substrate by the vibrating screen, so that the tobacco fragrance can be increased, the heat conduction performance of the heated cigarette can be improved, and the inert heat conduction material has no negative influence on sensory evaluation of the sheet.
(5) After the substrate is subjected to roll-in treatment, the substrate is tightly combined through vacuum balance treatment, the heat conductivity is more uniform, the penetrating and adsorption of the atomizing agent in the substrate are more uniform, and the atomizing effect of the special sheet is further improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It is to be understood that the processing equipment or apparatus not specifically identified in the following examples is conventional in the art.
Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps are arranged or the scope of the invention in which the invention may be practiced, and changes or modifications in the relative relationship may be made without substantially changing the technical content.
Example 1
The embodiment 1 of the invention provides a preparation method of a special sheet for heating cigarettes by a papermaking method, which comprises the following steps:
(1) weighing 1000g of raw material tobacco leaves, extracting with hot water of 50 ℃ for 90min, independently pulping the tobacco leaves to obtain tobacco leaf pulp, wherein the pulping degree is 50 DEG SR.
(2) Weighing 1000g of raw material tobacco stems and 400g of raw material mixed external fibers (including 220g of softwood external fibers, 140g of hardwood external fibers and 40g of flax fibers), extracting for 80min by using hot water at 60 ℃, pulping the raw material tobacco stems and the raw material mixed external fibers to obtain raw material tobacco stem pulp and raw material mixed external fiber pulp, wherein the pulping degree is 50 DEG SR, and filtering water by using double-layer gauze after pulping is finished. Adding the filter cake into 8% sodium hydroxide solution, performing ultrasonic dispersion treatment for 15min, stirring at low speed for 25min, maintaining the temperature at 25 deg.C, and removing the sodium hydroxide solution with squeezer. Putting the materials into 0.08mol/L monochloroacetic acid solution, heating, stirring and refluxing for 55min, wherein the heating temperature is 90 ℃. And after the fiber pulp is treated, repeatedly cleaning the tobacco stalks by using ethanol and clear water until the pH value is neutral, and finishing the modification treatment after the tobacco stalks and the additional mixed fibers are pulped.
(3) And (3) manufacturing the tobacco leaf pulp obtained in the step (1), the modified tobacco stem pulp obtained in the step (2) and the mixed external fiber pulp by a papermaking method manufacturing technology to obtain a substrate, wherein the water content of the substrate is 30%.
(4) And (4) carrying out low-temperature vacuum freeze drying treatment on the substrate in the step (3), wherein the temperature of a freeze dryer is minus 40 ℃ to minus 30 ℃, the vacuum degree is 0-10 pa, and the vacuum is continuously pumped for 12 hours.
(5) Placing the substrates in the step (4) in a laminated manner, and coating uniformly mixed powder consisting of 80g of tobacco powder, 5g of gelatin adhesive and 3g of silicon nitride inert heat conduction material in an interlayer by using a vibrating screen, wherein the coating weight is 5g/m2。
(6) And (3) spraying an atomizing agent on the substrate lamination in the step (5), wherein the atomizing agent is composed of a mixture of 80g of glycerin, 30g of propylene glycol, 10g of ethanol, 10g of tobacco extract and 5g of essence and flavor.
(7) And (4) carrying out vacuum balance treatment on the substrate in the step (6) after rolling, wherein the vacuum degree is 10-20 pa, and the balance time is 2.5 hours. After balancing treatment, shredding to obtain the special slice for heating cigarettes by the paper making method.
Example 2
The embodiment 2 of the invention provides a preparation method of a special sheet for heating cigarettes by a papermaking method, which comprises the following steps:
(1) weighing 800g of raw material tobacco leaves, extracting with hot water of 60 ℃ for 60min, independently pulping the tobacco leaves to obtain tobacco leaf pulp, wherein the pulping degree is 45 DEG SR.
(2) Weighing 800g of raw material tobacco stems and 400g of raw material mixed external fibers (including 220g of softwood external fibers, 140g of hardwood external fibers and 40g of flax fibers), extracting for 80min by using hot water at 60 ℃, pulping the raw material tobacco stems and the raw material mixed external fibers to obtain raw material tobacco stem pulp and raw material mixed external fiber pulp, wherein the pulping degree is 55 DEG SR, and filtering water by using double-layer gauze after pulping is finished. Adding the filter cake into 5% sodium hydroxide solution, performing ultrasonic dispersion treatment for 15min, stirring at low speed for 25min, maintaining the temperature at 25 deg.C, and removing the sodium hydroxide solution with squeezer. Putting the materials into 0.1mol/L monochloroacetic acid solution, heating, stirring and refluxing for 55min, wherein the heating temperature is 90 ℃. And after the fiber pulp is treated, repeatedly cleaning the tobacco stalks by using ethanol and clear water until the pH value is neutral, and finishing the modification treatment after the tobacco stalks and the additional mixed fibers are pulped.
(3) And (3) manufacturing the tobacco leaf pulp obtained in the step (1), the modified tobacco stem pulp obtained in the step (2) and the mixed external fiber pulp by a papermaking method manufacturing technology to obtain a substrate, wherein the water content of the substrate is 30%.
(4) And (4) carrying out low-temperature vacuum freeze drying treatment on the substrate in the step (3), wherein the temperature of a freeze dryer is minus 40 ℃ to minus 30 ℃, the vacuum degree is 0-10 pa, and the vacuum is continuously pumped for 10 hours.
(5) Placing the substrates in the step (4) in a laminated manner, and coating uniformly mixed powder consisting of 90g of smoke powder, 7g of chondroitin sulfate adhesive and 4g of silicon carbide inert heat conduction material in an interlayer by using a vibrating screen, wherein the coating weight is 8g/m2。
(6) And (3) spraying an atomizing agent on the substrate lamination in the step (5), wherein the atomizing agent consists of a mixture of 90g of glycerol, 40g of propylene glycol, 15g of ethanol, 12g of tobacco extract and 8g of essence and flavor.
(7) And (4) carrying out vacuum balance treatment on the substrate in the step (6) after rolling, wherein the vacuum degree is 10-20 pa, and the balance time is 3 hours. After balancing treatment, shredding to obtain the special slice for heating cigarettes by the paper making method.
Example 3
The embodiment 3 of the invention provides a preparation method of a special sheet for heating cigarettes by a papermaking method, which comprises the following steps:
(1) weighing 1000g of raw material tobacco leaves, extracting with hot water of 60 ℃ for 60min, independently pulping the tobacco leaves to obtain tobacco leaf pulp, wherein the pulping degree is 55 DEG SR.
(2) Weighing 800g of raw material tobacco stems and 400g of raw material mixed external fibers (including 220g of softwood external fibers, 140g of hardwood external fibers and 40g of flax fibers), extracting for 90min by using hot water at 60 ℃, pulping the raw material tobacco stems and the raw material mixed external fibers to obtain raw material tobacco stem pulp and raw material mixed external fiber pulp, wherein the pulping degree is 55 DEG SR, and filtering water by using double-layer gauze after pulping is finished. Adding the filter cake into 10% potassium hydroxide solution, performing ultrasonic dispersion treatment for 10min, stirring at low speed for 20min, maintaining the temperature at 30 deg.C, and removing potassium hydroxide solution with squeezer. Putting the materials into 0.1mol/L monochloroacetic acid solution, heating, stirring and refluxing for 55min, wherein the heating temperature is 90 ℃. And after the fiber slurry is treated, repeatedly cleaning the fiber slurry by using clear water until the pH value is neutral, and finishing the modification treatment after the tobacco stems and the added mixed fibers are pulped.
(3) And (3) manufacturing the tobacco leaf pulp obtained in the step (1), the modified tobacco stem pulp obtained in the step (2) and the mixed external fiber pulp by a papermaking method manufacturing technology to obtain a substrate, wherein the water content of the substrate is 25%.
(4) And (4) carrying out low-temperature vacuum freeze drying treatment on the substrate in the step (3), wherein the temperature of a freeze dryer is minus 40 ℃ to minus 30 ℃, the vacuum is continuously pumped for 16 hours, and the vacuum degree is 0-10 pa.
(5) Placing the substrates in the step (4) in a laminated manner, and coating uniformly mixed powder consisting of 100g of smoke powder, 6g of CMC adhesive and 4g of graphene inert heat conduction material in an interlayer by using a vibrating screen, wherein the coating weight is 10g/m2。
(6) And (3) spraying an atomizing agent on the substrate lamination in the step (5), wherein the atomizing agent is composed of a mixture of 100g of glycerol, 50g of propylene glycol, 20g of ethanol, 15g of tobacco extract and 10g of essence and flavor.
(7) And (4) carrying out vacuum balance treatment on the substrate in the step (6) after rolling, wherein the vacuum degree is 10-20 pa, and the balance time is 2 hours. After balancing treatment, shredding to obtain the special slice for heating cigarettes by the paper making method.
Example 4
The embodiment 4 of the invention provides a preparation method of a special sheet for heating cigarettes by a papermaking method, which comprises the following steps:
(1) weighing 1000g of raw material tobacco leaves, 800g of raw material tobacco stems and 400g of raw material mixed external fibers (including 220g of needle wood external fibers, 140g of broadleaf wood external fibers and 40g of flax fibers), extracting for 80min by using hot water at 70 ℃, pulping the raw material tobacco leaves, the raw material tobacco stems and the raw material mixed external fibers to obtain raw material tobacco leaf pulp, raw material tobacco stem pulp and raw material mixed external fiber pulp, wherein the pulping degree is 60 DEG SR, and filtering water by using double-layer gauze after pulping is finished. Adding the filter cake into 10% potassium hydroxide solution, performing ultrasonic dispersion treatment for 20min, stirring at low speed for 30min, maintaining the temperature at 30 deg.C, and removing the potassium hydroxide solution with squeezer. Putting the materials into 0.05mol/L monochloroacetic acid solution, heating, stirring and refluxing for 60min, wherein the heating temperature is 95 ℃. And after the fiber pulp is treated, repeatedly cleaning the pulp by using clear water until the pH value is neutral, and finishing the modification treatment after pulping the tobacco leaves, the tobacco stems and the added mixed fibers.
(2) And (2) manufacturing the modified tobacco leaf pulp, tobacco stem pulp and mixed external fiber pulp in the step (1) into a substrate by a papermaking method manufacturing technology, wherein the water content of the substrate is 35%.
(3) And (3) carrying out low-temperature vacuum freeze drying treatment on the substrate in the step (2), wherein the temperature of a freeze dryer is minus 40 ℃ to minus 30 ℃, the vacuum degree is 0-10 pa, and the vacuum is continuously pumped for 10 hours.
(4) Placing the substrates in the step (3) in a laminated manner, and coating uniformly mixed powder consisting of 100g of tobacco powder, 6g of sodium alginate adhesive and 4g of silica inert heat conduction material in an interlayer by using a vibrating screen, wherein the coating weight is 10g/m2。
(5) And (4) spraying an atomizing agent on the substrate lamination in the step (4), wherein the atomizing agent is composed of a mixture of 100g of glycerol, 40g of propylene glycol, 15g of ethanol, 12g of tobacco extract and 8g of essence and flavor.
(6) And (4) carrying out vacuum balance treatment on the substrate in the step (5) after rolling, wherein the vacuum degree is 10-20 pa, and the balance time is 3 hours. After balancing treatment, shredding to obtain the special slice for heating cigarettes by the paper making method.
Comparative example 1
Compared with the example 1, the special sheet for heating cigarettes by the paper-making method is prepared by the steps of mixing the raw material tobacco stems with the raw material external fibers without modification treatment and the rest steps are the same as the example 1.
Comparative example 2
Comparative example 2 compared with example 1, the substrate was dried in a forced air drying oven at 80 ℃ for 6 hours without low-temperature freeze-drying treatment, and the rest of the steps were the same as example 1, thereby obtaining a sheet dedicated to papermaking-process heated cigarettes.
Comparative example 3
In comparative example 3, compared with example 1, the mixed powder coated by the vibrating screen in the laminated substrate is not added with inert heat conduction materials, and the rest steps are the same as those in example 1, so that the special sheet for heating cigarettes by the paper-making method is prepared.
The appearance uniformity, tensile strength, thermal conductivity and atomization effect of the paper-making process heating cigarette special sheets prepared in examples 1 to 4 and comparative examples 1 to 3 are shown in table 1, and the sensory evaluation is shown in table 2.
As shown in tables 1 and 2, in examples 1 to 4, the amount of the tobacco powder sprayed on the interlayer and the content of the atomizing agent are increased, so that the atomizing effect and the sensory evaluation of the special sheet are both positively improved, but the appearance uniformity, the tensile strength and the heat conductivity of the special sheet for heating cigarettes by a paper making method are not greatly different due to the change of the raw material formula, the change of the modification process and the change of the heat conductive material. The comparison between the comparative example 1 and the example 1 shows that the special thin sheet has poor appearance uniformity and obviously reduced tensile strength because the raw material tobacco stems and the raw material mixed external fibers are not subjected to modification treatment. Comparative example 2 in comparison with example 1 shows that the substrate is not subjected to the low-temperature freeze-drying process, and a space structure filled with voids cannot be formed inside the substrate. The filling of the mixed powder such as tobacco powder and the adsorption effect of the atomizing agent are deteriorated, and the negative effect of the sensory evaluation is large. Comparison of comparative example 3 with example 1 shows that the addition of an inert heat conducting material to the mixed powder results in a significantly lower thermal conductivity of the specialized flakes and a lower atomization effect and smoke emission and strength.
The protective scope of the present invention is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present invention by those skilled in the art without departing from the scope and spirit of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. A preparation method of a special sheet for heating cigarettes by a paper making method is characterized by comprising the following steps:
preparing a substrate from a mixed slurry containing tobacco leaf slurry, tobacco stem slurry and mixed external fiber slurry by a papermaking method papermaking technology, wherein the tobacco stem slurry and the mixed external fiber slurry are modified slurries; the modification treatment process comprises the following steps: sequentially placing raw material tobacco stalk pulp and raw material mixed outer fiber pulp into a sodium hydroxide solution and a monochloroacetic acid solution for treatment, and then washing the mixture to be neutral by using ethanol and clear water; the concentration of the sodium hydroxide solution is 5-8%;
carrying out vacuum freeze drying treatment on the substrate to obtain a freeze-dried substrate;
placing the freeze-dried substrates in a laminated manner, coating mixed powder and an atomizing agent in an interlayer by a vibrating screen to obtain a coated substrate, wherein the mixed powder and the atomizing agent are coated separately, and the mixed powder contains smoke powder, an adhesive and an inert heat conduction material;
and rolling the coated substrate, carrying out vacuum balance treatment and shredding to obtain the special sheet for heating cigarettes by the papermaking method.
2. The method for preparing the special sheet for the cigarette heated by the papermaking method according to claim 1, wherein the tobacco leaf pulp is pulp subjected to the modification treatment, and the modification treatment process comprises the following steps: the raw material tobacco pulp is sequentially placed in a sodium hydroxide solution and a monochloroacetic acid solution for treatment, and then washed to be neutral by ethanol and clear water.
3. The preparation method of the special sheet for heating cigarettes by the papermaking method according to claim 1, wherein the modification treatment process comprises the following steps: soaking raw material tobacco stems and raw material mixed external fibers in water at 50-70 ℃ for 60-90 min, pulping, wherein the pulping degree is 40-60 DEG SR, and filtering to obtain raw material tobacco stem pulp and raw material mixed external fiber pulp; adding the raw material tobacco stalk pulp and the raw material mixed outer fiber pulp into a 5-8% sodium hydroxide solution, performing ultrasonic dispersion treatment for 10-20 min, then stirring at 15-30 ℃ for 20-30 min, and removing the sodium hydroxide solution by using a squeezer; then adding the materials into 0.05-0.1 mol/L monochloroacetic acid solution, and carrying out stirring reflux treatment at 85-95 ℃ for 50-60 min; then repeatedly washing with ethanol and clear water until the pH value is neutral.
4. The preparation method of the special sheet for heating cigarettes by the paper making method according to claim 1, wherein the inert heat conduction material is at least one of silicon dioxide, silicon carbide, silicon nitride and graphene.
5. The method for preparing the special sheet for heating cigarettes by the paper making method according to claim 1, wherein the atomizing agent is a mixture of glycerol, propylene glycol, ethanol, a tobacco extract and flavors and fragrances.
6. The preparation method of the special sheet for heating cigarettes by the paper making method according to claim 1, wherein the mass ratio of the tobacco powder, the adhesive and the inert heat conduction material in the mixed powder is (80-100): (5-8): (3-5).
7. The method for preparing the special slice for heating cigarettes by the papermaking method according to claim 1, wherein the mixed external fiber pulp is a mixture of softwood fiber pulp, hardwood fiber pulp and flax fiber pulp.
8. The preparation method of the sheet special for the papermaking-method heated cigarette, according to claim 1, is characterized in that the temperature of the vacuum freeze drying treatment is-40 ℃ to-30 ℃, the vacuum degree is 0 to 10pa, and the vacuumizing time is 12 to 16 hours.
9. The preparation method of the special sheet for the paper-making process heating cigarette according to claim 1, wherein the vacuum degree of the vacuum balance treatment is 10-20 pa, and the balance time is 2-3 h.
10. The preparation method of the special slice for heating cigarettes by the paper making method according to any one of claims 1 to 9, wherein the adhesive is at least one of CMC, sodium alginate, gelatin and chondroitin sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010983333.6A CN112021634B (en) | 2020-09-18 | 2020-09-18 | Preparation method of special sheet for heating cigarettes by papermaking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010983333.6A CN112021634B (en) | 2020-09-18 | 2020-09-18 | Preparation method of special sheet for heating cigarettes by papermaking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112021634A CN112021634A (en) | 2020-12-04 |
| CN112021634B true CN112021634B (en) | 2022-04-01 |
Family
ID=73573761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010983333.6A Active CN112021634B (en) | 2020-09-18 | 2020-09-18 | Preparation method of special sheet for heating cigarettes by papermaking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112021634B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113208149B (en) * | 2021-05-24 | 2022-11-11 | 中烟施伟策（云南）再造烟叶有限公司 | Method suitable for retaining fragrance and improving quality of paper-making reconstituted tobacco |
| CN113475735A (en) * | 2021-07-08 | 2021-10-08 | 河南卷烟工业烟草薄片有限公司 | Tobacco base material for electromagnetic heating cigarette and preparation method of cigarette |
| CN115669985A (en) * | 2022-11-25 | 2023-02-03 | 武汉理工大学 | Tobacco sheet process slurry and preparation method and application thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1280684A (en) * | 1969-07-18 | 1972-07-05 | Carreras Ltd | Treatment of tobacco |
| CN103005660B (en) * | 2012-12-28 | 2015-02-11 | 上海烟草集团有限责任公司 | Production process for reducing CO release amount of paper-making reconstituted tobacco and reconstituted tobacco |
| CN104886755A (en) * | 2015-05-07 | 2015-09-09 | 云南瑞升烟草技术（集团）有限公司 | Tobacco stem modified processing method for paper-making process reconstituted tobaccos |
| CN110122924A (en) * | 2019-05-31 | 2019-08-16 | 南通烟滤嘴有限责任公司 | Reconstituted tobacoo filter stick, composite filter and its manufacturing method |
| CN110679984A (en) * | 2019-11-15 | 2020-01-14 | 湖北中烟工业有限责任公司 | Preparation method of special slice for heating cigarettes |
| CN110959905B (en) * | 2019-12-13 | 2021-12-24 | 河南卷烟工业烟草薄片有限公司 | Preparation method of cigarette sheet capable of being heated and not combusted |
-
2020
- 2020-09-18 CN CN202010983333.6A patent/CN112021634B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112021634A (en) | 2020-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112021634B (en) | Preparation method of special sheet for heating cigarettes by papermaking method | |
| CN105747264B (en) | Activated carbon-containing heating non-combustible tobacco substrate and preparation method and application thereof | |
| CN110150722A (en) | Heating with high heat-transfer performance is not burnt reconstituted tobacco and preparation method thereof | |
| CN109619650A (en) | It is a kind of to heat the reconstituted tobacoo and preparation method thereof that do not burn | |
| CN110537721B (en) | Reconstituted tobacco for heating cigarettes and improved dry preparation method thereof | |
| CN105167154A (en) | Novel method for preparing reconstituted tobacco by virtue of papermaking process | |
| WO2022148295A1 (en) | High-quality central heating tobacco cigarette core material and preparation method therefor | |
| CN111543669A (en) | Preparation method of cigarette sheet without burning by heating | |
| CN101336749A (en) | Dry type paper-making method recreated tobacco and production method thereof | |
| CN110250556A (en) | Improve the preparation method for heating the cigarette core material moisture pick-up properties that do not burn | |
| CN110839935A (en) | Production method of reconstituted tobacco special for heating cigarettes | |
| CN107460776A (en) | A kind of preparation method of humectation bag ash cigarette paper | |
| CN111329100A (en) | Preparation method of three-layer sheet for cigarette capable of being heated and burned | |
| CN104005291A (en) | Tipping paper capable of reducing smoke by virtue of strong adsorption and preparation method of tipping paper | |
| CN114009826B (en) | Heating cigarette core material and preparation method thereof | |
| CN113439867B (en) | Method for preparing reconstituted tobacco for heating non-combustible cigarettes by combining dry method and rolling method | |
| CN115553487A (en) | Heating cigarette sheet and manufacturing method thereof | |
| CN112663395B (en) | Preparation method of tobacco base material for heating non-combustible cigarettes | |
| CN106400605B (en) | A kind of bamboo perfume (or spice) cigarette paper and preparation method thereof | |
| CN109602064B (en) | Preparation method of reconstituted tobacco by papermaking method | |
| CN114403489A (en) | Tobacco sheet and preparation method thereof | |
| CN112586796A (en) | Center heating tobacco cigarette core material and preparation method of heating tobacco cigarette core material | |
| CN112030598A (en) | Coated powder tobacco forming paper and preparation method thereof | |
| CN108095184B (en) | Production process of reconstituted tobacco by wave sheet type paper-making method | |
| CN104872810A (en) | Preparation method and application of modified tobacco stem fibers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |