CN105495675A - Method and device for extracting and scattering tobacco stems synchronously - Google Patents
Method and device for extracting and scattering tobacco stems synchronously Download PDFInfo
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- CN105495675A CN105495675A CN201610034339.2A CN201610034339A CN105495675A CN 105495675 A CN105495675 A CN 105495675A CN 201610034339 A CN201610034339 A CN 201610034339A CN 105495675 A CN105495675 A CN 105495675A
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- storage tank
- extraction
- offal
- fluffer
- extracting
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
Abstract
The invention discloses a method and device for extracting and scattering tobacco stems synchronously. The method comprises the step one of carrying out feeding, wherein the tobacco stems and solvent are fed into a storage tank according to the set proportion; the step two of carrying out stirring, wherein a push type paddle stirrer is started, and the materials in the step one are stirred and mixed uniformly to obtain a tobacco stem mixture; the step three of carrying out scattering while carrying out extracting, wherein a scattering machine is started, the tobacco stem mixture in the storage tank enters the scattering machine under action of stirring and driving force of the push type paddle stirrer, and then flows back to the storage tank through a circulating pulp pipe by utilizing the centrifugal pumping action generated by a rotor and pulp separating blades, so that the materials are extracted and scattered in a circulating mode; the step four of carrying out secondary extracting, wherein the scattering machine is closed for carrying out secondary extraction. While extracting and scattering are completed, the purposes of high extracting efficiency, good scattering quality and low energy consumption are achieved.
Description
Technical field
The invention belongs to papermaking-method reconstituted tobaccos technical field, be specifically related to a kind ofly carry out offal extraction and the method discongested and device simultaneously.
Background technology
Current papermaking-method reconstituted tobaccos field offal extracts, carding process method mainly contains two kinds, and one first discongests rear extraction, and one first extracts to discongest afterwards.
Offal extraction process generally adopts the method for container+hot water+stirring+auxiliary at present, and main flow equipment has leaching to filter the process equipments such as tank, multi-function extractor, dynamic extraction pot and hot reflux extracting-concentration machine group, ultrasonic enhanced extraction, Microwave Extraction.Ultrasonic enhanced extraction, Microwave Extraction are extraction processes newly developed in recent years.The energy enhanced dispersion process that ultrasonic enhanced extraction can utilize ultrasonic wave to vibrate, make solvent easily immerse solid solute, solid solute is easily diffused into solid liquid interface from solid interior, thus accelerates extraction process.Shortcoming limits by ultrasonic power, and the economy of large-scale production is bad.Microwave Extraction utilizes microwave to the effect heated solvent of polar molecule and medicinal material, makes cell wall rupture, reaches the object accelerating extraction.Microwave Extraction is subject to the restriction of microwave generation power, there are some engineering problems when amplifying production scale.Ultrasonic enhanced extraction and Microwave Extraction is adopted to be all to improve extraction efficiency and recovery rate.
Offal carding process, mainly extruded by the offal before or after extraction, tobacco stalk fibre is loosened, and the mode of being rubbed by machinery makes offal be separated into ribbon silk-shaped tobacco stalks along machine direction.Domestic and international in papermaking-method reconstituted tobaccos production technology at present, be substantially all first clean offal, then the offal after cleaning directly sent into extraction process section and extract, after being extracted by Separation of Solid and Liquid, carry out solution fibre.Fibre is separated, slurrying again after solution fibre, because offal is first through rubbing process after extraction, obtained slurry is more homogeneous, and along with the increase fiber of making beating revolution is fully separated, wire-dividing broom purification degree is higher, therefore beating degree increase is very fast, and the intensity of sheet base is good, and quality is also very homogeneous.
But extract after separate fibre also have its corresponding shortcoming, because offal is not broken, contact with solution area little, therefore extraction efficiency can be affected; Stressed comparatively large during some offal defibrination in addition, fibrous fracture is a lot, stressedly during the fiber defibrination of some offal to be littlely separated, and therefore sheet rheobase and quality all can be affected.
If offal separates fine process to offal before sending into extraction process section after cleaning, will significantly improve follow-up extraction efficiency and recovery rate.The offal separated after fibre becomes card shape, and increase with the contact area of extract, extract is easy to enter in offal, saves extraction time, significantly improves extraction efficiency.But offal moisture content is low before extracting, suffer considerable damage discongesting offal bundle in processing procedure, pulp quality is poor, is unfavorable for the manufacture of product.
So by the suitable extraction defibering method of research, to extract and while discongesting completing, reaching to extract and discongest that efficiency is high, quality good, the object of low energy consumption, is the trend of current industry development.
Research papers:
Enterprise's technology development the 32nd volume the 4th phase " extraction and thread rolling technique are on the impact of papermaking-method reconstituted tobaccos quality and improvement thereof "
Summary: along with the continuous progress of China's cigarette producing process, paper process is applied more and more extensive in reconstituted tobacco is produced.The quality how improving papermaking-method reconstituted tobaccos is further the emphasis of Modern cigarette industry manufacturing enterprise research.Article, by the labor to papermaking-method reconstituted tobaccos technique, draws the impact of technology controlling and process on papermaking-method reconstituted tobaccos quality, and proposes corresponding improvement project.
" tobacco science and technology " the 07th phase " improvement of papermaking-method reconstituted tobaccos production technology " in 2009
Summary: for solving produced problem in papermaking-method reconstituted tobaccos production process, adding one section of thread rolling process in original production process, have studied thread rolling machine rotating speed, washing temperature, offal moisture content to the impact of thread rolling effect.Analyze and add thread rolling process to effect of extracting, making beating efficiency, the rheobasic impact of sheet.Result shows: optimum process condition is: the rotating speed of thread rolling machine is 200r/min, and before thread rolling, washing temperature is 40 DEG C, and during thread rolling, the moisture content of offal is 30% ~ 35%.When meeting production requirement, adding thread rolling process and can improve extraction efficiency about 15%, save beating time and energy consumption more than 30%.
Paper and papermaking 2014 phase in the end of the year 10 " the direct shredding process of offal twin-screw pulper and application thereof "
Summary: for research offal pretreatment condition to become the impact of silk effect on twin-screw thread rolling machine, investigated steaming time, offal moisture after decatize, offal thread rolling hop count is on the impact of cabo shredding yield.Experimental result shows: regulate offal initial water to be divided into 40% ~ 50% to carry out individual composition, along with the prolongation of steaming time, offal moisture increases sharply, moisture is increased to 58.14% by initial value, after 10min, the moisture change of offal tends towards stability, and therefore determines that 10min is offal preferably steaming time; Offal initial water sub-control is built in 40% ~ 50%, and after individual composition, moisture reaches 55% ~ 60%, and under this condition, offal thread rolling effect is best; Offal single hop thread rolling after decatize, stem qualification rate is 48.63%, and through the thread rolling of 3,4 sections, meticulous stem causes stem to be wound around, and qualified stem sieves difficulty, and qualification rate declines, and creates a lot of component in small, broken bits.Therefore, offal decatize becomes the optimal treatment condition of silk to be: moisture 40% ~ 50% after regaining moisture of cabo, best steaming time 10min, after decatize, moisture reaches 55% ~ 60%, two sections of thread rollings, and with this understanding, qualified stem yield is 68.91%.
Heilungkiang papermaking the 2nd phase in 2010 " application of thread rolling technology in producing tobacco flake in method similar to papermaking " makes a summary: reconstituted tobacoo is a kind of using offal, offal, fragment etc. as raw material, the reconstituted product reconfigured by special process.The physical property of reconstituted tobacoo is similar to tobacco leaf, and can be used as a kind of effective flavor enhancement for tobacco blend, can be develops new product provides effective process means, can alleviate again the harm to smoker.Have studied the optimum process condition of thread rolling process raw material and the impact on sheet base herein, the sheet base tensile index that the tensile index obtaining the sheet base that slurry obtains through thread rolling process obtains significantly better than non-thread rolling process raw material.The sheet base filling capacity that the slurry obtained through the offal of thread rolling process in addition obtains is significantly better than the raw material of non-thread rolling process.
Summary of the invention
The object of this invention is to provide one and extract defibering method and device thereof simultaneously, complete extract and while discongesting, reach extraction efficiency high, discongest the object that quality is good, energy resource consumption is low.
The present invention is by the following technical solutions:
A kind of device carrying out offal extraction simultaneously and discongest, comprise storage tank and fluffer, a sidewall in described storage tank is provided with pusher blade agitator, the charging aperture of described fluffer is connected with storage tank by storage tank sidewall, the discharging opening of fluffer is connected to the charging aperture of storage tank by circulation oar pipe, wherein, the direction of propulsion of described pusher blade agitator is towards the charging aperture of fluffer; Described storage tank is also provided with charging aperture and discharging opening.
Preferably, the bottom of described storage tank is provided with Resistance Temperature transmitter and differential pressure transmitter, and detection control storage tank temperature of charge, liquid level, can detect in real time.
Preferably, described storage tank side is provided with concentration sensor.1. extracting concentration controls to control extracting concentration with reference to adjustment solvent and offal ratio during charging; 2. extract concentration controls to use online densimeter detectable concentration, directly feeds back extraction effect or efficiency.Also can by storage tank sample tap sampling Detection and Extraction liquid concentration.
Preferably, described storage tank is jacket structured, and use steam to heat, the coated insulation material of tank body outermost layer is incubated.
Preferably, the charging aperture of described fluffer is connected on storage tank sidewall by pipeline, or by direct-connected for its charging aperture on the sidewall of storage tank.
Described fluffer is conventional equipment of the prior art, is preferably, the low dense mill fiberizer of JM600, Shandong Chenzhong Mechine Co., Ltd..
Preferably, described device also comprises PLC control system, controls rotor, stator cutterhead gap by gathering current data, ensures, on the basis of fluffer stable operation, to realize power limitation control, effectively can stablize and discongest quality, reduce labor intensity.
The method utilizing said apparatus to carry out offal extraction simultaneously and discongest, comprises the following steps:
(1) charging: offal and solvent are entered in storage tank according to setting ratio;
(2) stir: open pusher blade agitator, stirred and evenly mixed by the material in step (1), obtain offal mixture, offal material seethes from top to bottom, realizes the Homogeneous phase mixing of material and solvent;
(3) extraction limit in limit is discongested: open fluffer, under the stirring of pusher blade agitator and the effect of motive force, offal mixture in storage tank enters fluffer, then the centrifugal pumping effect that rotor and point blade produce is utilized, flow back into storage tank through recycle slurry pipe, realize Matter Transfer extraction and discongest;
(4) second extraction: close fluffer and carry out second extraction, extraction time is 8 ~ 12min, and Extracting temperature is 60-65 DEG C.
In step (1), the length of described offal is 3-5cm; The mass ratio of described offal and solvent is 1:(5 ~ 7), be preferably 1:6.
In step (1), described solvent is preferably water.
In step (2), the time of described mixing is 5 ~ 10min, and described mixing temperature is 65-70 DEG C.
In step (3), extraction is discongested temperature and is controlled as 60-65 DEG C, before opening fluffer, rotor, stator cutterhead gap are adjusted to 0.40mm-0.50mm, keep 1 ~ 3min (preferred 3min), rotating speed is 900-1000r/min, then reduce rotor after opening, the gap of stator cutterhead is 0.20mm-0.30mm, keep 4 ~ 6min (preferred 5min), rotating speed is 1200-1300r/min, obtain extraction and discongest mixture, the beating degree of gained slurry is 13-17 ° of SR, and weight in wet base is 5.0-7.0g.
In step (4), extraction time preferred 10min.
The invention has the beneficial effects as follows:
(1) apparatus structure of the present invention is simple, easy to operate, offal is extracted and discongests and synchronously carry out, and extracts, discongests process control, and quality is good, and production capacity is large, and ton material power consumption is low.
Wherein, pusher blade agitator volume cycle rate is large, fluid operationally can be made well to seethe up and down while rotating with blade, and agitator part has the double action of stirring and forced feed, slurry concentration is even, guarantees to extract, discongest steady quality.
Fluffer part completes size degradation to offal, cut-out, offal through fiber hydrolization district (before rotor), by the gap of rotor, stator cutter, by the centrifugal pumping effect that rotor and point lodicule produce, automatically by recycle slurry pipe, flow back to stock tank, achieve automatic cycle.
In addition, be furnished with the advanced means such as constant power controller and concentration sensor, the quality effectively control extraction, discongesting, reduces labor intensity.
Extraction time is controlled: stir solvent mixes with offal from unlatching and extract, and discongest quality meets the demands to material, as increased extraction time, can stop fluffer, use agitator extracts in tank, and the time can freely control.
(2) the present invention adopts to extract and discongests the method for simultaneously carrying out, extract after volume is discongested on limit and adopt second extraction, both the shortcoming first discongesting rear extraction process had been avoided, it also avoid the deficiency first extracted and discongest afterwards, make hot-water solubles's extraction efficiency significantly improve more traditional extraction and improve 15%-20%, discongest that quality is more excellent, stem qualification rate is high, energy resource consumption is lower.
Tobacco stalk raw material carries out preextraction process, makes offal contain certain moisture, is convenient to follow-up extraction limit, limit and discongests process.
Offal moisture content has a significant effect to the fine rate of offal solution, offal moisture content improves effectively can improve the fine rate of offal solution, and reduce tobacco stalk fibre cutting phenomenon, the present invention adopts extraction limit, limit defibering method, make offal moisture content when 70-75%, the fine rate of offal solution can reach more than 95%.Fully separate fibre by offal, realize the conquassation to offal, thread rolling discongests, increase the specific area that offal contacts with extractant, hot-water solubles's recovery rate can improve 15% ~ 20%.
(3) from production process, the raw material that the raw material ratio that method of the present invention prepares is traditional is more prone to making beating, pulp quality is good, the substrate good quality of production, more traditional slurrying phase specific energy consumption reduces about 30%, pulping efficiency promotes 30%, product flexibility after coating is better, and it is more outstanding to make the sense organ style becoming product.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Wherein, 1, storage tank, 2, fluffer, 3, pusher blade agitator, 4, recycle slurry pipe, 5, charging aperture, 6, discharging opening.
Detailed description of the invention
Embodiment 1
A kind of device carrying out offal extraction simultaneously and discongest, comprise storage tank 1 and fluffer 2, a sidewall in described storage tank 1 is provided with pusher blade agitator 3, the charging aperture of described fluffer 2 is connected with storage tank 1 by storage tank 1 sidewall, what the discharging opening of fluffer 2 was connected to storage tank 1 by circulation oar pipe 4 enters oar mouth, wherein, the traffic direction of described pusher blade agitator 3 is towards the charging aperture of fluffer 2; Described storage tank 1 is also provided with charging aperture 5 and discharging opening 6.
The bottom of described storage tank 1 is provided with Resistance Temperature transmitter and differential pressure transmitter, and detection control storage tank temperature of charge, liquid level, can detect in real time.
Described storage tank 1 side is provided with concentration sensor.1. extracting concentration controls to control extracting concentration with reference to adjustment solvent and offal ratio during charging; 2. extract concentration controls to use online densimeter detectable concentration, directly feeds back extraction effect or efficiency.Also can by storage tank sample tap sampling Detection and Extraction liquid concentration.
Described storage tank 1 is jacket structured, and use steam to heat, the coated insulation material of tank body outermost layer is incubated.
The charging aperture of described fluffer 2 is connected on storage tank 1 sidewall by pipeline, or by direct-connected for its charging aperture on the sidewall of storage tank 1.
Described fluffer is conventional equipment of the prior art, and model is: the low dense mill fiberizer of JM600, Shandong Chenzhong Mechine Co., Ltd..
Described device also comprises PLC control system, controls rotor, stator cutterhead gap by gathering current data, ensures, on the basis of fluffer stable operation, to realize power limitation control, effectively can stablize and discongest quality, reduce labor intensity.
Embodiment 2
The method utilizing the device of embodiment 1 to carry out offal extraction simultaneously and discongest, comprises the following steps:
(1) charging: offal and water are entered in storage tank according to setting ratio; The length of described offal is 3-5cm; The mass ratio of described offal and solvent is 1:6.
(2) stir: open pusher blade agitator, stirred and evenly mixed by the material in step (1), offal material seethes from top to bottom, realizes the Homogeneous phase mixing of material and solvent, obtains offal mixture; The time of described mixing is 8min, and described mixing temperature is 65-70 DEG C.
(3) extraction limit in limit is discongested: open fluffer, under the stirring of pusher blade agitator and the effect of motive force, offal mixture in storage tank enters fluffer, then the centrifugal pumping effect that rotor and point blade produce is utilized, flow back into storage tank through recycle slurry pipe, realize Matter Transfer extraction and discongest; Extraction is discongested temperature and is controlled as 60-65 DEG C, before opening fluffer, rotor, stator cutterhead gap are adjusted to maximum 0.50mm, and keep 2min, rotating speed is 950r/min, then reduce rotor after opening, the gap of stator cutterhead is 0.25mm, keep 5min, rotating speed is 1250r/min, obtains extraction and discongests mixture, the beating degree of gained slurry is 13-17 ° of SR, and weight in wet base is 5.0-7.0g.
(4) second extraction: close fluffer and carry out second extraction, extraction time is 10min, and Extracting temperature is 62 DEG C.
Embodiment 3
The method utilizing the device of embodiment 1 to carry out offal extraction simultaneously and discongest, comprises the following steps:
(1) charging: offal and water are entered in storage tank according to setting ratio; The length of described offal is 3-5cm; The mass ratio of described offal and solvent is 1:5.
(2) stir: open pusher blade agitator, stirred and evenly mixed by the material in step (1), offal material seethes from top to bottom, realizes the Homogeneous phase mixing of material and solvent, obtains offal mixture; The time of described mixing is 5 ~ 10min, and described mixing temperature is 70 DEG C.
(3) extraction limit in limit is discongested: open fluffer, under the stirring of pusher blade agitator and the effect of motive force, offal mixture in storage tank enters fluffer, then the centrifugal pumping effect that rotor and point blade produce is utilized, flow back into storage tank through recycle slurry pipe, realize Matter Transfer extraction and discongest; Extraction is discongested temperature and is controlled to be 65 DEG C, before opening fluffer, rotor, stator cutterhead gap are adjusted to 0.45mm, keep 2min, rotating speed is 900r/min, reduces rotor, the gap of stator cutterhead is 0.20mm after then opening, and keeps 5min, rotating speed is 1300r/min, obtains extraction and discongests mixture.
(4) second extraction: close fluffer and carry out second extraction, extraction time is 8min, and Extracting temperature is 65 DEG C.
Comparative example 1
First discongest rear extraction process:
Take 1000kg (air-dry) offal, add the pre-dipping machine of spiral by the solid-to-liquid ratio of 1:5, liquid is 50 ~ 80 DEG C of clear water, raw material after preimpregnation enters fluffer, the process conditions of fluffer are set to: 1000 turns, and flow is 2000kg/ hour, and disk mill gap is 0.35mm.Discongest rear whole raw material and enter extractor, supplement 70 ~ 90 DEG C of clear water by the solid-to-liquid ratio of 1:8, extract 40min.
Comparative example 2
Carding process after first extracting:
Take 1000kg (air-dry) offal, supplement 70 ~ 90 DEG C of clear water according to the solid-to-liquid ratio of 1:8, extract 40min, enter fluffer after extraction again and carry out offal and discongest, the process conditions of fluffer are as identical in comparative example 1.
Slurry in embodiment 2, comparative example 1 and comparative example 2 is equipped with the formula materials such as the solid content after the tobacco leaf extraction of proper proportion again and carries out slurrying, be deployed into coating fluid by formula after extracting liq is concentrated, manufacture paper with pulp through paper machine, be coated with, dry, cut and obtain reconstituted tobacco product.
Result is as follows:
(1) beating time compares: when condition is identical, reaches identical beating degree, and embodiment 2 Time transfer receiver ratio 1 uses 20min less, 15min fewer than comparative example 2.Energy consumption more than 30% is saved compared to comparative example 1 and comparative example 2.
(2) sheet base compares: the sheet base in embodiment 2 and product comparison ratio 1 and comparative example 2 more soft.
By upper Biao Ke get, the sheet rheobase that the slurry that in the present invention, method obtains manufactures paper with pulp out is significantly better than sheet rheobase obtained in comparative example 1, comparative example 2, and quality is very homogeneous.
(4) aspirate evaluation comparison: above-mentioned three grow tobacco thin slice send company specialty the evaluation and analysis committee carry out sensory evaluation.
Through sensory evaluation, the sensory evaluation xylon gas of reconstituted tobacoo of the present invention is low, and substantially without burning sensation, pleasant impression is clean, compared to comparative example 1 and comparative example 2 more excellent.
Claims (10)
1. the device carrying out offal extraction simultaneously and discongest, it is characterized in that: comprise storage tank and fluffer, a sidewall in described storage tank is provided with pusher blade agitator, the charging aperture of described fluffer is connected with storage tank by storage tank sidewall, the discharging opening of fluffer is connected to the charging aperture of storage tank by circulation oar pipe, wherein, the direction of propulsion of described pusher blade agitator is towards the charging aperture of fluffer; Described storage tank is also provided with charging aperture and discharging opening.
2. device as claimed in claim 1, is characterized in that: the bottom of described storage tank is provided with Resistance Temperature transmitter and differential pressure transmitter.
3. device as claimed in claim 1, is characterized in that: the charging aperture of described fluffer is connected on storage tank sidewall by pipeline, or by direct-connected for its charging aperture on the sidewall of storage tank.
4. device as claimed in claim 1, is characterized in that: described device also comprises PLC control system.
5. the method utilizing the device according to any one of claim 1 ~ 4 to carry out offal extraction simultaneously and discongest, is characterized in that, comprise the following steps:
(1) charging: offal and solvent are entered in storage tank according to setting ratio;
(2) stir: open pusher blade agitator, the material in step (1) is stirred and evenly mixed, obtains offal mixture;
(3) extraction limit in limit is discongested: open fluffer, under the stirring of pusher blade agitator and the effect of motive force, offal mixture in storage tank enters fluffer, then the centrifugal pumping effect that rotor and point blade produce is utilized, flow back into storage tank through recycle slurry pipe, realize Matter Transfer extraction and discongest;
(4) second extraction: close fluffer and carry out second extraction, extraction time is 8 ~ 12min, and Extracting temperature is 60-65 DEG C.
6. method as claimed in claim 5, it is characterized in that: in step (1), the length of described offal is 3-5cm; The mass ratio of described offal and solvent is 1:5 ~ 7.
7. method as claimed in claim 5, it is characterized in that: in step (2), the time of described mixing is 5 ~ 10min.
8. method as claimed in claim 5, it is characterized in that: in step (2), described mixing temperature is 65-70 DEG C.
9. method as claimed in claim 5, it is characterized in that: in step (3), extraction is discongested temperature and is controlled as 60-65 DEG C, before opening fluffer, rotor, stator cutterhead gap are adjusted to 0.40-0.50mm, keep 1 ~ 3min, rotating speed is 900-1000r/min, then reduce rotor after opening, the gap of stator cutterhead is 0.20-0.30mm, keep 4 ~ 6min, rotating speed is 1200-1300r/min.
10. method as claimed in claim 5, it is characterized in that: in step (4), described extraction time is 10min.
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| CN201610034339.2A CN105495675B (en) | 2016-01-19 | 2016-01-19 | Method and device for extracting and scattering tobacco stems synchronously |
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| CN201610034339.2A CN105495675B (en) | 2016-01-19 | 2016-01-19 | Method and device for extracting and scattering tobacco stems synchronously |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106769626A (en) * | 2016-12-01 | 2017-05-31 | 江苏中烟工业有限责任公司 | A kind of assay method for reproducing stem product backfill rate |
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| CN102488319A (en) * | 2011-11-27 | 2012-06-13 | 中国海诚工程科技股份有限公司 | Continuous extraction method and device of papermaking reconstituted tobacco |
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| CN103767064A (en) * | 2014-01-25 | 2014-05-07 | 江苏维尔电气有限公司 | Online spiral digesting and extracting device for tobacco stem powder of tobacco sheets |
| CN205358195U (en) * | 2016-01-19 | 2016-07-06 | 山东瑞博斯烟草有限公司 | Device that offal drawed and relieveed carries out simultaneously |
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| GB884435A (en) * | 1958-11-20 | 1961-12-13 | C H Dexter & Sons Inc | Improvements in or relating to tobacco web material |
| CN201175590Y (en) * | 2008-03-21 | 2009-01-07 | 江苏维尔电气有限公司 | Horizontal type cabo-powder leaching extracting device |
| CN102488319A (en) * | 2011-11-27 | 2012-06-13 | 中国海诚工程科技股份有限公司 | Continuous extraction method and device of papermaking reconstituted tobacco |
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| CN106769626A (en) * | 2016-12-01 | 2017-05-31 | 江苏中烟工业有限责任公司 | A kind of assay method for reproducing stem product backfill rate |
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| CN105495675B (en) | 2017-01-25 |
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