CN110403226B - Process and system for producing high-strength homogenized tobacco material by extrusion type composite molding - Google Patents
Process and system for producing high-strength homogenized tobacco material by extrusion type composite molding Download PDFInfo
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- CN110403226B CN110403226B CN201910806335.5A CN201910806335A CN110403226B CN 110403226 B CN110403226 B CN 110403226B CN 201910806335 A CN201910806335 A CN 201910806335A CN 110403226 B CN110403226 B CN 110403226B
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- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 208
- 239000000463 material Substances 0.000 title claims abstract description 115
- 238000001125 extrusion Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000000465 moulding Methods 0.000 title claims abstract description 15
- 241000208125 Nicotiana Species 0.000 title claims abstract 47
- 238000000576 coating method Methods 0.000 claims abstract description 67
- 238000001035 drying Methods 0.000 claims abstract description 59
- 239000011248 coating agent Substances 0.000 claims abstract description 56
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 239000011268 mixed slurry Substances 0.000 claims abstract description 44
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 28
- 239000010935 stainless steel Substances 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 25
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 18
- 238000007493 shaping process Methods 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 238000007765 extrusion coating Methods 0.000 claims abstract description 11
- 230000037303 wrinkles Effects 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 235000013599 spices Nutrition 0.000 claims abstract description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000007603 infrared drying Methods 0.000 claims description 5
- 229920001661 Chitosan Polymers 0.000 claims description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 4
- 244000061508 Eriobotrya japonica Species 0.000 claims description 4
- 235000009008 Eriobotrya japonica Nutrition 0.000 claims description 4
- 229920002907 Guar gum Polymers 0.000 claims description 4
- 229920000881 Modified starch Polymers 0.000 claims description 4
- 239000004368 Modified starch Substances 0.000 claims description 4
- 240000007817 Olea europaea Species 0.000 claims description 4
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 239000000665 guar gum Substances 0.000 claims description 4
- 235000010417 guar gum Nutrition 0.000 claims description 4
- 229960002154 guar gum Drugs 0.000 claims description 4
- 235000019426 modified starch Nutrition 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 4
- 239000000600 sorbitol Substances 0.000 claims description 4
- 244000246386 Mentha pulegium Species 0.000 claims description 3
- 235000016257 Mentha pulegium Nutrition 0.000 claims description 3
- 235000004357 Mentha x piperita Nutrition 0.000 claims description 3
- 244000046146 Pueraria lobata Species 0.000 claims description 3
- 235000010575 Pueraria lobata Nutrition 0.000 claims description 3
- 240000000851 Vaccinium corymbosum Species 0.000 claims description 3
- 235000003095 Vaccinium corymbosum Nutrition 0.000 claims description 3
- 235000017537 Vaccinium myrtillus Nutrition 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 235000021014 blueberries Nutrition 0.000 claims description 3
- 235000001050 hortel pimenta Nutrition 0.000 claims description 3
- 238000007761 roller coating Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 241000675108 Citrus tangerina Species 0.000 claims 1
- 230000000391 smoking effect Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 238000000265 homogenisation Methods 0.000 abstract description 5
- 244000061176 Nicotiana tabacum Species 0.000 description 162
- 238000004519 manufacturing process Methods 0.000 description 11
- 235000019504 cigarettes Nutrition 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000000123 paper Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 210000003128 head Anatomy 0.000 description 5
- 206010025421 Macule Diseases 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000003205 fragrance Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 235000019505 tobacco product Nutrition 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 210000002189 macula lutea Anatomy 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940055416 blueberry extract Drugs 0.000 description 1
- 235000019216 blueberry extract Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000020737 peppermint extract Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing 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
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
- A24B15/26—Use of organic solvents for extraction
-
- 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
- A24B3/12—Steaming, curing, or flavouring tobacco
-
- 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
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/10—Mechanisms in which power is applied to web-roll spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/34—Apparatus for taking-out curl from webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/517—Drying material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The process and system for producing high-strength homogenized tobacco material by extrusion composite molding comprises the steps of taking rolled tobacco base material, mixing 10-20% by mass of fuming agent and 0.5-10% by mass of spice of the tobacco base material according to a proportion to form 1# mixed slurry, and coating the slurry on the tobacco base material by a transfer coating method; mixing the 250-350 mesh tobacco powder with an adhesive to form a No. 2 mixed slurry, and respectively coating the slurry on two sides of a tobacco substrate by adopting an extrusion coating method according to the coating amount of 10.0-80.0 g/m < 2 >; then feeding the tobacco base material into an annular stainless steel belt for primary drying and demoulding; and then drying the tobacco base material for the second time by adopting drying equipment at 70-105 ℃, removing wrinkles and shaping, and rolling to obtain the high-strength homogenized tobacco material. The high-strength homogenized tobacco material prepared by the invention has the advantages of large smoke quantity, high strength, good homogenization, difficult moisture absorption and the like.
Description
Technical Field
The invention belongs to the technical field of novel heating non-combustion tobacco product production, and in particular relates to a process for producing a high-strength homogenized tobacco material by adopting an extrusion type composite forming technology and a production system thereof.
Background
The world cigarette market is facing the third revolution after the birth of a cigarette machine and the appearance of a filter tip, the novel heating non-burning cigarette is used as a novel tobacco product, and is gradually becoming a product pursued by new generation smokers, and the novel heating non-burning cigarette has the characteristics of gradually improving market share, rapidly developing, greatly reducing harmful chemical components and biotoxicity of smoke, being easier to accept by younger smokers, and the like. Therefore, research on new tobacco products and heating devices thereof has become a research hotspot in the tobacco industry of various countries, wherein research on tobacco materials is of great importance.
At present, there are many ways of producing the heated non-combustible tobacco, such as paper making method adopted by foreign GlO, thick pulp method adopted by IQOS, dry method adopted by domestic tobacco factories, rolling method, etc. In order to achieve the same smoke effect as the traditional cigarettes, the heating non-burning tobacco web contains a large amount of fuming agents, the currently adopted technical method is to prepare mixed slurry from tobacco raw materials, adhesives, fuming agents and the like, then shape the mixed slurry, the fuming agents mainly comprise propylene glycol and glycerol, the fuming agents are difficult to dry due to the physical characteristics of the fuming agents in the later processing and drying process, the fuming agents have good hydrophilicity, the tobacco web is easy to absorb moisture in the air, the surfaces of the tobacco web after moisture absorption become adhered, the strength is reduced, the subsequent production and processing of the tobacco web are difficult and heavy, the moisture absorption phenomenon still exists after the tobacco web is rolled into a finished cigarette, and the macula is easy to appear at the end of the cigarette. The common solution in the prior art is to use special aluminum foil to compound the forming paper when the tobacco raw material is rolled into cigarettes, which not only plays a role of heat transfer, but also prevents the generation of macula lutea, but does not fundamentally solve the problem.
The casting method is an old shaping method, and is used in paper, plastics and paint industry at first, and is mainly characterized by that firstly, the pulverized powder material, adhesive, plasticizer, dispersing agent and solvent are mixed to obtain slurry with a certain viscosity, the slurry is flowed down from hopper, and is scraped and coated on special base band by scraper with a certain thickness, and dried and solidified, then stripped from above to obtain the film of green band, then the green band is undergone the processes of punching and lamination according to the size and shape of the finished product so as to obtain the invented blank product to be sintered. Has the advantages of low cost, high quality, no toxicity, simple production process, etc.
The most commonly used forms of homogenized tobacco material are reconstituted tobacco sheets and cast leaves. The process of forming a sheet of homogenized tobacco material typically includes the step of mixing ground tobacco with a binder to form a slurry. The slurry is then used to produce a tobacco web, for example by casting a viscous slurry onto a moving metal belt to produce so-called cast leaves. However, this way of producing homogenized tobacco sheet or cast leaf can produce relatively large amounts of waste. Some of this scrap may be generated due to the formation of defects in the cast leaves during the casting or drying process, resulting in partial failure of the cast leaves in the presence of defects. Thus, more expensive tobacco material in the stock is wasted and such homogenized tobacco material is quite "sticky" and generally has relatively low tensile strength. Thus, during its production, care needs to be taken that in practice it may easily tear or break if mishandled, and the non-uniformity in the homogenized tobacco web presents difficulties for subsequent handling of the homogenized tobacco web in the production of aerosol-generating articles.
Therefore, in the production of heated non-combustible tobacco raw materials, a new technical process method is particularly needed, and on the basis of keeping the taste, fuming quantity and taste of the tobacco raw materials not reduced, the moisture absorption problem of a tobacco web material is solved, and the phenomenon of tobacco macula is improved. At the same time, there is a need for a new technical process that increases the tensile strength of the tobacco web while reducing the waste of tobacco material, improves the degree of homogenization, and reduces the differences in aerosol delivery.
Disclosure of Invention
The invention aims to overcome the technical blank and provide a process for producing a high-strength homogenized tobacco material by extrusion type composite molding, which is suitable for heating non-combustible tobacco raw materials, and adopts a mode of combining one-time transfer coating and two-time extrusion coating to produce the tobacco material with large smoke quantity, high strength, good homogenization and difficult moisture absorption.
The invention aims at realizing the following technical scheme:
the process for producing the high-strength homogenized tobacco material by extrusion type composite molding comprises the following process steps:
(1) Taking a rolled tobacco substrate for standby, wherein the tobacco substrate is formed paper or tobacco sheets;
(2) Mixing 10-20% by weight of a smoke agent and 0.5-10% by weight of a spice of a tobacco base material according to a proportion to form a No. 1 mixed slurry, and coating the No. 1 mixed slurry on the tobacco base material by adopting a transfer coating method;
(3) Mixing 250-350 mesh tobacco powder with an adhesive to form 2# mixed slurry, and respectively coating the 2# mixed slurry on two sides of a tobacco substrate by adopting an extrusion coating method according to the coating amount of 10.0-80.0 g/m 2 on one side;
(4) Feeding the tobacco base material into an annular stainless steel belt for primary drying, and demolding the tobacco base material after primary drying;
(5) Drying the tobacco base material for the second time at 70-105 ℃ by adopting drying equipment;
(6) And removing wrinkles from the tobacco base material subjected to secondary drying, shaping and rolling to obtain the high-strength homogenized tobacco material.
The fuming agent in the step (2) is a polyol or a mixture of polyols, including but not limited to propylene glycol, glycerol and sorbitol.
The spice in the step (2) is one or more extracts of peppermint, dried orange peel, blueberry, olive, orange peel, dark plum, kudzuvine root and loquat.
The transfer coating method in the step (2) is a roll coating method.
The step (3) of coating the 2# mixed slurry on both sides of the tobacco substrate by an extrusion coating method, wherein the step of coating the 2# mixed slurry on one side of the tobacco substrate by a two-step method is performed before coating the 2# mixed slurry on the other side of the tobacco substrate; or the No. 2 mixed slurry is respectively coated on two sides of the tobacco substrate by adopting a one-step method.
The No. 2 mixed slurry in the step (3) is formed by mixing 1 part by weight of the adhesive with the tobacco powder mixing proportion of 8% -20%; the adhesive is an aqueous solution of an adhesive with the mass concentration of 1.0-12.0%, and is one or a combination of a plurality of modified starch glue, sodium carboxymethyl cellulose, guar gum and chitosan.
The first drying in the step (4) is to dry the tobacco base material by adopting a method of leading hot air from the upper part of the stainless steel belt from top to bottom and leading steam from the lower part of the stainless steel belt from bottom to top; the water content of the tobacco base material before entering the steel belt is 65-90%, and the water content of the tobacco base material after exiting the steel belt is 30-45%.
And (5) drying the tobacco base material for the second time, namely, putting the tobacco base material into an infrared drying oven, heating and drying at 70-105 ℃, removing the solvent in the slurry on the two sides of the tobacco base material, and wherein the moisture content of the tobacco base material after the secondary drying is 8-15%.
An extrusion type composite forming system for producing high-strength homogenized tobacco material comprises a coating mechanism, a first feeding system, a second feeding system, a primary drying device, a secondary drying device, a wrinkle removing shaping device and a winding mechanism which are sequentially arranged along the advancing direction of a tobacco base material (1); the coating mechanism comprises a coating groove (19), a coating roller (18) and a back roller (18 b) which are arranged in the coating groove, a first feed tank (21) for feeding the coating groove and a first conveying pump (20); the first feeding system comprises a first extrusion die head (5) facing the upper surface of the tobacco substrate, a second feeding tank (3) for feeding the first extrusion die head and a second conveying pump (4); the second feeding system comprises a second extrusion die (15) facing the lower surface of the tobacco substrate, a third feeding tank (17) for feeding the second extrusion die and a third conveying pump (16); the primary drying device comprises an annular stainless steel belt (13) with two sleeved ends on a stainless steel roller (12), a hot air supply device (6) and a steam supply device (14) which are respectively arranged above and below the stainless steel belt; the secondary drying device is a near infrared oven (9); the wrinkle-removing shaping device consists of an upper wrinkle-removing roller (10) and a lower wrinkle-removing roller which rotate in opposite directions; the winding mechanism is a winding roller (11); the tobacco base material (1) passes through an upper coating roller (18) and a lower coating roller (18) to be coated by roller coating through the guidance of the set supporting roller and steering roller, then the upper surface is coated by extrusion through a first extrusion die head (5), the lower surface is coated by extrusion through a second extrusion die head (15), and then the annular stainless steel strip (13) is dried for the first time and the near infrared oven (9) is dried for the second time in sequence, and then the annular stainless steel strip passes through an upper wrinkling removal roller (10) and a lower wrinkling removal roller to be coiled after wrinkling removal and shaping.
The high-strength homogenized tobacco material prepared by the invention has the advantages of dry surface, difficult moisture absorption, sufficient fuming agent, large tobacco ration, sufficient fragrance, sufficient smoke quantity, improved fragrance texture and good sensory effect when in use.
The extrusion type composite forming system has the advantages of simple and reliable structure, low manufacturing cost, reasonable production flow and stable quality of the produced high-strength homogenized tobacco material.
The present invention is further described below with reference to the examples and the accompanying drawings.
Drawings
FIG. 1 is a flow chart of one embodiment of an extrusion compounding process according to the present invention;
FIG. 2 is a schematic diagram of an extrusion compounding molding system in accordance with the present invention.
Detailed Description
Example 1
The process for producing the high-strength homogenized tobacco material by adopting extrusion type composite molding comprises the following process steps:
(1) Taking rolled tobacco base material for standby, wherein the tobacco base material is 10000CU forming paper with a quantitative 25 g/square meter, and can be directly purchased in the market or manufactured by adopting the prior art;
(2) And mixing 15% of propylene glycol by mass of the tobacco base material and 8% of spice by mass of the tobacco base material in proportion to form a No. 1 mixed slurry, and coating the No. 1 mixed slurry on the tobacco base material by adopting a transfer coating method. The perfume is one or more extracts of peppermint, dried orange peel, blueberry, olive, orange peel, dark plum, kudzuvine root and loquat, and the embodiment is 5% of olive extract and 3% of dried orange peel extract. The perfume has the functions of moistening and softening smoke and supplementing smoke fragrance. The transfer coating method is a roller coating method;
(3) Mixing 250-350 mesh tobacco powder and an adhesive to form 2# mixed slurry, and respectively coating the 2# mixed slurry on two sides of a tobacco substrate according to the coating amount of 20.0-30.0 g/m 2 on one side by adopting an extrusion coating method, specifically, coating the 2# mixed slurry on one side of the tobacco substrate by adopting a two-step method, and then coating the 2# mixed slurry on the other side of the tobacco substrate. The 2# mixed slurry may also be coated on both sides of the tobacco substrate separately using a one-step process. The method of coating the tobacco powder on the two sides can effectively improve the spraying quantity of the tobacco powder. The No. 2 mixed slurry is prepared by mixing and stirring 1 part by weight of the smoke powder with 10% of binder, the mixing proportion and the stirring time are standard with good stability, good viscosity and good fluidity, and the stirring time is generally not less than 15 minutes. The tobacco powder is prepared by drying natural tobacco leaves, removing impurities, crushing, screening and taking 250-350 meshes for later use. The adhesive is an aqueous solution of an adhesive with the mass concentration of 5%, the adhesive is one or a combination of a plurality of modified starch glue, sodium carboxymethyl cellulose, guar gum and chitosan, and the adhesive in the embodiment is the modified starch glue;
(4) Feeding the tobacco base material into an annular stainless steel belt for primary drying, and demolding the tobacco base material after primary drying; the first drying is to dry the tobacco base material by adopting a method of leading hot air from above the stainless steel belt from top to bottom and leading steam from below the stainless steel belt from bottom to top; the water content of the tobacco base material before entering the steel belt is about 75%, and the water content of the tobacco base material after exiting the steel belt is 40%;
(5) Drying the tobacco base material for the second time by adopting drying equipment; the second drying is to put the tobacco base material into an infrared drying oven, heat and dry the tobacco base material at about 80 ℃ to remove the solvent in the slurry on the two sides of the tobacco base material, and the water content of the tobacco base material after the second drying is about 10%;
(6) And removing wrinkles from the tobacco base material subjected to secondary drying, shaping and rolling to obtain the high-strength homogenized tobacco material.
The high strength homogenized tobacco material prepared in this example had a moisture content of 12%, a thickness of 0.27mm, a basis weight of 175 g/square meter and a tensile strength of 1120N/m.
Example 2
The process for producing the high-strength homogenized tobacco material by adopting extrusion type composite molding comprises the following process steps:
(1) Taking a rolled tobacco substrate for standby, wherein the tobacco substrate is a tobacco sheet with a quantitative of 35 g/square meter, and can be directly purchased in the market or manufactured by adopting the prior art;
(2) Mixing 10% of glycerol, 10% of sorbitol and 2% of peppermint extract and 8% of blueberry extract by mass of a tobacco base material in proportion to form a 1# mixed slurry, and coating the 1# mixed slurry on the tobacco base material by a transfer coating method;
(3) Mixing 250-350 mesh tobacco powder with an adhesive to form 2# mixed slurry, and respectively coating the 2# mixed slurry on two sides of a tobacco substrate by adopting an extrusion coating method according to the coating amount of 10.0-15.0 g/m 2 on one side; the No. 2 mixed slurry is prepared by mixing and stirring 1 part by weight of tobacco powder with 8% of adhesive, wherein the tobacco powder is prepared by drying natural tobacco leaves and tobacco stems, removing impurities, crushing and screening, and then taking 250-350 meshes for later use. The adhesive is an aqueous solution of an adhesive with the mass concentration of 12%, and the adhesive is a combination of sodium carboxymethyl cellulose and guar gum;
(4) Feeding the tobacco base material into an annular stainless steel belt for primary drying, and demolding the tobacco base material after primary drying; the water content of the tobacco base material before entering the steel belt is about 90%, and the water content when exiting the steel belt is 45%;
(5) The tobacco base material is put into an infrared drying oven, heated and dried at 100-105 ℃, the solvent in the slurry on the two sides of the tobacco base material is removed, and the moisture content of the tobacco base material after secondary drying is about 15%;
(6) And removing wrinkles from the tobacco base material subjected to secondary drying, shaping and rolling to obtain the high-strength homogenized tobacco material.
Example 3
The process for producing the high-strength homogenized tobacco material by adopting extrusion type composite molding comprises the following process steps:
(1) Taking a rolled tobacco substrate for standby, wherein the tobacco substrate is formed paper with a quantitative of 30 g/square meter;
(2) Mixing sorbitol accounting for 10% of the mass of a tobacco base material and loquat extract accounting for 0.5% of the mass of the tobacco base material in proportion to form a No. 1 mixed slurry, and coating the No. 1 mixed slurry on the tobacco base material by adopting a transfer coating method;
(3) Mixing 250-350 mesh tobacco powder with an adhesive to form 2# mixed slurry, and respectively coating the 2# mixed slurry on two sides of a tobacco substrate by adopting an extrusion coating method according to the coating amount of 75.0-80.0 g/m 2 on one side; the No. 2 mixed slurry is prepared by mixing and stirring 1 part by weight of tobacco powder which is prepared by mixing and stirring 20% of adhesive in an external mixing mass ratio, wherein the tobacco powder is prepared by drying, removing impurities, crushing and screening natural tobacco stems, and then taking 250-350 meshes for later use. The adhesive is an aqueous solution of adhesive with the mass concentration of about 1%, and the adhesive is chitosan;
(4) Feeding the tobacco base material into an annular stainless steel belt for primary drying, and demolding the tobacco base material after primary drying; the water content of the tobacco base material before entering the steel belt is about 65%, and the water content of the tobacco base material after exiting the steel belt is 30%;
(5) The tobacco base material is put into an infrared drying oven, heated and dried at 85-95 ℃ to remove the solvent in the slurry on the two sides of the tobacco base material, and the moisture content of the tobacco base material after secondary drying is about 8%;
(6) And removing wrinkles from the tobacco base material subjected to secondary drying, shaping and rolling to obtain the high-strength homogenized tobacco material.
An extrusion type composite forming production system for producing the high-strength homogenized tobacco material is shown in fig. 1, and comprises a coating mechanism, a first feeding system, a second feeding system, a primary drying device, a secondary drying device, a wrinkle removing shaping device and a winding mechanism which are sequentially arranged along the advancing direction of a tobacco substrate 1. The coating mechanism comprises a coating groove 19, a coating roller 18a and a back roller 18b which are arranged in the coating groove, a first feed tank 21 for feeding the coating groove and a first conveying pump 20, wherein the first feed tank 21 stores the No. 1 mixed slurry, and the first conveying pump 20 is arranged on a liquid conveying pipe which is connected with the first feed tank 21 and the coating groove 19. The first feeding system comprises a first extrusion die 5 facing the upper surface of the tobacco substrate, a second feeding tank 3 for feeding the first extrusion die and a second conveying pump 4, wherein the second conveying pump 4 is arranged on a liquid feeding pipe for connecting the first extrusion die 5 and the second feeding tank 3. The second feeding system comprises a second extrusion die 15 facing the lower surface of the tobacco substrate, a third feeding tank 17 for feeding the second extrusion die and a third conveying pump 16, wherein the third conveying pump 16 is arranged on a liquid feeding pipe for connecting the second extrusion die 15 and the third feeding tank 17. The second supply tank 3 and the third supply tank 17 store the 2# mixed slurry. The first extrusion die 5 and the second extrusion die 12 may be single dies or twin dies. The primary drying device comprises an annular stainless steel belt 13, a hot air supply device 6 and a steam supply device 14, wherein the annular stainless steel belt 13 is sleeved on the stainless steel roller 12, and the hot air supply device 6 and the steam supply device 14 are respectively arranged above and below the stainless steel belt. The secondary drying device is a near infrared oven 9. The wrinkle-removing shaping device consists of an upper wrinkle-removing roller 10 and a lower wrinkle-removing roller which rotate in opposite directions. The winding mechanism is a winding roller 11.
The working process of the extrusion type composite molding production system is as follows: after passing through the first support roller 2a, the tobacco substrate 1 passes through the coating roller 18 and the back roller 18b, and is roll-coated in the coating bath 19. The No.1 mixed slurry is stirred in the first feed tank 21 at 40-65 ℃ on line, is conveyed into a coating tank through the first conveying pump 20, is driven by the rotation of a coating roller, and is transferred onto a tobacco substrate by the rotation of a back roller or the coating roller. The tobacco substrate then sequentially bypasses the second support roller 2b located below the first extrusion die 5 and the third support roller 2c located above the second extrusion die 15, extrusion-coats the upper surface of the tobacco substrate through the first extrusion die 5, and extrusion-coats the lower surface of the tobacco substrate through the second extrusion die 15. The extrusion coating is to convey the 2# mixed slurry in the second feed tank 3 to the first extrusion die 5 by the second conveying pump 4, make the slurry into a liquid film by extrusion mode, then apply the liquid film onto the upper surface of the moving tobacco substrate, convey the 2# mixed slurry in the third feed tank 17 to the second extrusion die 15 by the third conveying pump 16, make the slurry into a liquid film by extrusion mode, and then apply the liquid film onto the lower surface of the moving tobacco substrate. The extrusion die head is adopted to enable spraying to be more uniform, the smoke agent is wrapped on the inner core, hygroscopicity of tobacco raw materials and macula spot phenomenon of cigarettes are effectively reduced, and the surface of the tobacco web is not adhered and is easy to process. The tobacco base material enters an annular stainless steel belt 13, in the process of travelling along the stainless steel belt 13, hot air blown downwards from the upper part by a hot air blowing device 6 and hot steam blown upwards from the lower part by a steam blowing device 14 are dried for the first time, the moisture in the tobacco base material after the first drying is mostly dried, the tobacco base material is dried and demoulded, then enters a near infrared oven 9 around a steering roller 7 to be dried for the second time at 70-105 ℃, and the solvent in the slurry on the two sides of the tobacco base material is dried, so that solid matters are well adhered on the tobacco base material, and a tobacco powder coating with uniform textures on the two sides is formed on the tobacco base material. The moisture content of the tobacco base material after secondary drying is 8% -15%. The tobacco base material after secondary drying passes through an upper and a lower wrinkle-removing roller 10 for removing wrinkles and shaping, and then is wound by a winding roller 11.
The invention adopts a mode of combining one-time transfer coating and two-time extrusion coating to produce the tobacco material which has large smoke yield, high strength, good homogenization and difficult moisture absorption, solves the moisture absorption problem of the tobacco web material on the basis of keeping the smoke absorption, smoke yield and taste of the tobacco raw material not to be reduced, improves the macula lutea phenomenon of the tobacco, improves the tensile strength of the tobacco base material while reducing the waste of the tobacco raw material, improves the homogenization degree, reduces the difference in aerosol delivery, and the prepared high-strength homogenized tobacco material has the moisture content of 8-15%, the thickness of 0.15-0.40 mm, the ration of 30-220 g per square meter and the tensile strength of 500-1200N/m.
The percentages stated in the present invention are mass percentages unless otherwise indicated.
The coating mechanism, the first feeding system, the second feeding system, the primary drying device, the secondary drying device, the wrinkle removing shaping device and the winding mechanism can be all devices in the prior art, and can also be designed and manufactured by self.
Claims (8)
1. The process for producing the high-strength homogenized tobacco material by extrusion type composite forming is characterized by comprising the following process steps:
(1) Taking a rolled tobacco substrate for standby, wherein the tobacco substrate is formed paper or tobacco sheets;
(2) Mixing 10-20% by weight of a smoke agent and 0.5-10% by weight of a spice of a tobacco base material according to a proportion to form a No. 1 mixed slurry, and coating the No. 1 mixed slurry on the tobacco base material by adopting a transfer coating method;
(3) Mixing 250-350 mesh tobacco powder with an adhesive to form 2# mixed slurry, and respectively coating the 2# mixed slurry on two sides of a tobacco substrate by adopting an extrusion coating method according to the coating amount of 10.0-80.0 g/m 2 on one side;
(4) Feeding the tobacco base material into an annular stainless steel belt for primary drying, and demolding the tobacco base material after primary drying;
(5) Drying the tobacco base material for the second time at 70-105 ℃ by adopting drying equipment;
(6) Removing wrinkles from the tobacco base material subjected to secondary drying, shaping and rolling to obtain the high-strength homogenized tobacco material;
The process is realized by adopting an extrusion type composite forming system, and the extrusion type composite forming system comprises a coating mechanism, a first feeding system, a second feeding system, a primary drying device, a secondary drying device, a wrinkle removal shaping device and a winding mechanism which are sequentially arranged along the advancing direction of a tobacco substrate (1); the coating mechanism comprises a coating groove (19), a coating roller (18) and a back roller (18 b) which are arranged in the coating groove, a first feed tank (21) for feeding the coating groove and a first conveying pump (20); the first feeding system comprises a first extrusion die head (5) facing the upper surface of the tobacco substrate, a second feeding tank (3) for feeding the first extrusion die head and a second conveying pump (4); the second feeding system comprises a second extrusion die (15) facing the lower surface of the tobacco substrate, a third feeding tank (17) for feeding the second extrusion die and a third conveying pump (16); the primary drying device comprises an annular stainless steel belt (13) with two sleeved ends on a stainless steel roller (12), a hot air supply device (6) and a steam supply device (14) which are respectively arranged above and below the stainless steel belt; the secondary drying device is a near infrared oven (9); the wrinkle-removing shaping device consists of an upper wrinkle-removing roller (10) and a lower wrinkle-removing roller which rotate in opposite directions; the winding mechanism is a winding roller (11); the tobacco base material (1) passes through an upper coating roller (18) and a lower coating roller (18) to be coated by roller coating through the guidance of the set supporting roller and steering roller, then the upper surface is coated by extrusion through a first extrusion die head (5), the lower surface is coated by extrusion through a second extrusion die head (15), and then the annular stainless steel strip (13) is dried for the first time and the near infrared oven (9) is dried for the second time in sequence, and then the annular stainless steel strip passes through an upper wrinkling removal roller (10) and a lower wrinkling removal roller to be coiled after wrinkling removal and shaping.
2. A process for producing a high strength homogenized tobacco material in accordance with claim 1, wherein said smoking agent of step (2) is a polyol or a mixture of polyols, including but not limited to propylene glycol, glycerol, sorbitol.
3. The process for producing a high-strength homogenized tobacco material by extrusion composite molding according to claim 1 or 2, wherein the spice in the step (2) is an extract of one or more of peppermint, tangerine peel, blueberry, olive, orange peel, dark plum, kudzuvine root and loquat.
4. The process for producing a high strength homogenized tobacco material by extrusion composite forming of claim 1, wherein said transfer coating method of step (2) is a roll coating method.
5. The process for producing a high-strength homogenized tobacco material by extrusion composite molding according to claim 1, wherein in the step (3), the 2# mixed slurry is coated on both sides of the tobacco substrate by an extrusion coating method, and the 2# mixed slurry is coated on one side of the tobacco substrate by a two-step method and then coated on the other side of the tobacco substrate; or the No. 2 mixed slurry is respectively coated on two sides of the tobacco substrate by adopting a one-step method.
6. The process for producing a high-strength homogenized tobacco material by extrusion composite molding according to claim 1 or 5, wherein the 2# mixed slurry in the step (3) is formed by mixing 1 part by weight of a binder with a tobacco powder doping amount of 8% -20%; the adhesive is an aqueous solution of an adhesive with the mass concentration of 1.0-12.0%, and is one or a combination of a plurality of modified starch glue, sodium carboxymethyl cellulose, guar gum and chitosan.
7. The process for producing a high-strength homogenized tobacco material by extrusion composite molding according to claim 1, wherein the first drying in the step (4) is to dry the tobacco substrate by passing hot air from above the stainless steel belt and steam from below the stainless steel belt; the water content of the tobacco base material before entering the steel belt is 65-90%, and the water content of the tobacco base material after exiting the steel belt is 30-45%.
8. The process for producing a high-strength homogenized tobacco material by extrusion composite molding according to claim 1, wherein the second drying of the tobacco substrate in the step (5) is carried out by putting the tobacco substrate in an infrared drying oven, heating and drying at 70-105 ℃, removing the solvent in the slurry on both sides of the tobacco substrate, and the moisture content of the tobacco substrate after the second drying is 8-15%.
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