CN109793263A - A method of prediction cigarette ventilation rate - Google Patents
A method of prediction cigarette ventilation rate Download PDFInfo
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Abstract
The present invention relates to a kind of methods for predicting cigarette ventilation rate, including obtain cigarette raw and auxiliary material characteristic and Cigarettesize data, calculate cigarette paper ventilation rate and total ventilation rate according to the air permeability of cork paper.According to the detection method and technological principle of Cigarette Draw Resistance and ventilation rate, in conjunction with a large amount of different brands different size cigarette, establish the prediction model of each index Yu cigarette raw and auxiliary material characteristic, to rationally design cigarette structure, providing foundation according to property of raw material selection cigarette material, control releasing content of coke tar etc., the predictability of product design is realized.The internal relation between cigarette physical index and raw and auxiliary material is disclosed simultaneously, when cigarette physical index when something goes wrong, can point the direction according to the clear questions and prospect of model for quality improvement in actual production, the blindness in production is avoided, cigarette interior quality is constantly promoted.
Description
Technical field
The present invention relates to technical field of cigarette processing, particularly relate to a kind of method for predicting cigarette ventilation rate.
Background technique
Cigarette physical index is direct reflection cigarette quality, and the cigarette physics that should be controlled during production of cigarettes is special
Property, it mainly include weight, circumference, length, ventilation, resistance to suction and hardness.Compared to weight, circumference, length index, Cigarette Draw Resistance and logical
Wind rate be consumer in smoking most can the cigarette characteristic that arrives of direct feeling, if the too small flue gas of resistance to suction can tend to flat, resistance to suction
Excessive to lead to extraction difficult, resistance to suction index directly affects physical quality and the aesthetic quality of cigarette, and design is improper to be caused to disappear
The person's of expense is discontented, therefore studies the relationship of cigarette items physical index and raw and auxiliary material, realizes mentioning for Cigarette Draw Resistance and ventilation rate
Preceding prediction is of great significance to one qualified cigarette of design.
The prior art needs to detect the infiltration coefficient of pipe tobacco section and filter segment when predicting Cigarette Draw Resistance and ventilation rate, for
Implement relative difficulty for general tobacco productive corporation, and needs to produce the survey that just can be carried out relevant parameter after pipe tobacco and filter stick
Amount, for Cigarette design, there are certain hysteresis qualitys.Some other prediction Cigarette Draw Resistance and the method for ventilation rate are only to single cigarette
Brand has carried out regression modeling, and when Cigarettesize and raw and auxiliary material characteristic change, there are a foregone conclusions for the model scope of application
It is sex-limited.
Summary of the invention
The object of the present invention is to provide a kind of methods for predicting cigarette ventilation rate, to solve the prior art to cigarette ventilation rate
Prediction because the measurement of relevant parameter it is difficult, relative to Cigarette design, there are certain hysteresis qualitys, avoid the blindness of Cigarette design
The problem of property.
The present invention is achieved by the following technical solutions:
A method of prediction cigarette ventilation rate, comprising the following steps:
1) cigarette raw and auxiliary material characteristic and Cigarettesize data are obtained；
2) judge the air permeability of cork paper, if the air permeability of the cork paper is 0, first calculate cigarette paper ventilation rate pv,
Total ventilation rate tv, calculation formula are calculated again are as follows:
Pv=-7.78+6.1 × 10-7×jt×d×l1×pd
Tv=pv；
Wherein, jt indicates air permeance for cigarette paper, unit cu；D indicates cigarette diameter, unit mm；l1Indicate that no mouth cigarette is long
Degree, unit mm；Pd indicates Cigarette Draw Resistance, unit Pa；
If the air permeability of the cork paper is not 0, total ventilation rate tv is first calculated, then calculates cigarette paper ventilation rate pv, is counted
Calculate formula are as follows:
Tv=-18.09+1.06 × fv+0.017 × pd+2.6 × 10-4×jt×d×l1
Pv=tv-fv；
Wherein, fv indicates cigarette filter ventilation rate；Pd indicates Cigarette Draw Resistance, and unit Pa, jt indicates air permeance for cigarette paper, single
Position cu；D indicates cigarette diameter, unit mm；l1Indicate no mouth cigarette length, unit mm.
The Cigarette Draw Resistance is obtained by following steps:
1) the resistance to suction cpd that cigarette closes suction is obtained, is calculated as follows:
Wherein, ρ1Indicate tobacco density in cigarette, unit g/cm3；Tc indicates finished product tobacco fill value, unit cm3/g；l1
Indicate no mouth cigarette length, unit mm；R indicates that finished product tobacco fill value reduces ratio；D indicates cigarette diameter, unit mm；lbpd
Indicate 4 double-length filter stick pressure drops, unit Pa；
2) cigarette filter ventilation rate fv is obtained, is calculated as follows:
Fv=(- 43.9+1.55 × l2-197.3×ρ2+0.53×l1+ 0.01 × st × d) × j,
Wherein, l2Indicate filter lengths, unit mm；ρ2Indicate filter stick density, unit g/cm3；l1Indicate that no mouth cigarette is long
Degree, unit mm；St indicates air permeability of tipping paper, unit cu；J is indicator variable, and when air permeability of tipping paper is 0, j=0 works as water
When loose paper air permeability is not 0, j=1；
3) resistance to suction and cigarette for calculating cigarette-opening suction close the difference e r between the resistance to suction of suction, are calculated as follows:
Wherein, 1 cigarette length, unit mm are indicated；Fv indicates cigarette filter ventilation rate；D indicates cigarette diameter, unit mm；j
For indicator variable, when air permeability of tipping paper is 0, j=0, when air permeability of tipping paper is not 0, j=1；
4) Cigarette Draw Resistance pd is calculated, is calculated as follows:
Pd=cpd-er.
The cigarette raw and auxiliary material characteristic and Cigarettesize data include finished cut tobacco Filling power, filtering rod, cigarette paper
Air permeability, tipping paper air permeability, cigarette length, cigarette circumference and filter lengths.
The finished cut tobacco Filling power is with the cigarette brand Filling power of close tobacco leaf formulation and identical tobacco processing equipment
Empirical value.
The cork paper includes hole-punching huon pine paper and not hole-punching huon pine paper.
When the cork paper does not punch, its air permeability is set as 0, filter ventilation rates 0.
The beneficial effects of the present invention are:
The technical program is according to the detection method and technological principle of Cigarette Draw Resistance and ventilation rate, not in conjunction with a large amount of different brands
Same specification cigarette establishes the prediction model of each index Yu cigarette raw and auxiliary material characteristic, to rationally design cigarette structure, according to raw material
Characteristic selects cigarette material, control releasing content of coke tar etc. to provide foundation, realizes the predictability of product design.
The internal relation between cigarette physical index and raw and auxiliary material is disclosed simultaneously, when cigarette physical index in actual production
When something goes wrong, it can be pointed the direction according to the clear questions and prospect of model for quality improvement, avoid the blindness in production, no
It is disconnected to promote cigarette interior quality.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only
It can be used to explanation and illustration technical solution of the present invention, and be not to be construed as the limitation to technical solution of the present invention.
The technical program provides a kind of method for predicting cigarette ventilation rate, comprising the following steps:
1) acquisition cigarette raw and auxiliary material characteristic and Cigarettesize, including finished cut tobacco Filling power, filtering rod, cigarette paper are saturating
Manner, tipping paper air permeability, cigarette length, cigarette circumference, filter lengths, filter stick weight, wherein finished cut tobacco Filling power is with phase
The cigarette brand Filling power of nearly tobacco leaf formulation and identical tobacco processing equipment is empirical value；Make when establishing prediction model following false
If: cork paper includes hole-punching huon pine paper and not hole-punching huon pine paper；When cork paper does not punch, it is believed that its air permeability is approximately 0, filter
Mouth ventilation rate is 0.
2) judge the air permeability of cork paper, if the air permeability of the cork paper is 0, first calculate cigarette paper ventilation rate pv,
Total ventilation rate tv, calculation formula are calculated again are as follows:
Pv=-7.78+6.1 × 10-7×jt×d×l1×pd
Tv=pv；
Wherein, jt indicates air permeance for cigarette paper, unit cu；D indicates cigarette diameter, unit mm；l1Indicate that no mouth cigarette is long
Degree, unit mm；Pd indicates Cigarette Draw Resistance, unit Pa；
If the air permeability of the cork paper is not 0, total ventilation rate tv is first calculated, then calculates cigarette paper ventilation rate pv, is counted
Calculate formula are as follows:
Tv=-18.09+1.06 × fv+0.017 × pd+2.6 × 10-4×jt×d×l1
Pv=tv-fv；
Wherein, fv indicates cigarette filter ventilation rate；Pd indicates Cigarette Draw Resistance, and unit Pa, jt indicates air permeance for cigarette paper, single
Position cu；D indicates cigarette diameter, unit mm；l1Indicate no mouth cigarette length, unit mm.
Cigarette Draw Resistance is obtained by following steps:
1) the resistance to suction cpd (Cigarette Draw Resistance that closing filter segment measures) that cigarette closes suction is calculated, volume unit Pa: is calculated as follows
Cigarette closes suction:
In formula, ρ1Indicate tobacco density in cigarette, unit g/cm3；Tc indicates finished product tobacco fill value, unit cm3/g；l1
Indicate no mouth cigarette length, unit mm；R indicates that finished product tobacco fill value reduces ratio；D indicates cigarette diameter, unit mm；lbpd
Indicate 4 double-length filter stick pressure drops, unit Pa.
2) it calculates cigarette filter ventilation rate fv: cigarette filter ventilation rate is calculated as follows:
Fv=(- 43.9+1.55 × l2-197.3×ρ2+0.53×l1+0.01×st×d)×j
L in formula2Indicate filter lengths, unit mm；ρ2Indicate filter stick density, unit g/cm3；l1Indicate no mouth cigarette length,
Unit mm；St indicates air permeability of tipping paper, unit cu；J is indicator variable, the j=when cork paper does not punch (air permeability approximation 0)
0, when air permeability of tipping paper is not 0, j=1.
3) resistance to suction and cigarette for calculating cigarette-opening suction close the difference e r between the resistance to suction of suction, unit Pa: cigarette-opening, which is inhaled, is
It is measured in the underlying open cigarette filter section that measurement cigarette closes suction, therefore open suction to have with the difference for closing suction with filter ventilation rates
It closes, predicts its difference with filter ventilation rates:
In formula: l indicates cigarette length, unit mm；Fv indicates cigarette filter ventilation rate；D indicates cigarette diameter, unit mm；j
For indicator variable, the j=0 when cork paper does not punch, when air permeability of tipping paper is not 0, j=1.
4) it calculates Cigarette Draw Resistance: Cigarette Draw Resistance is calculated as follows:
Pd=cpd-er
In formula: pd indicates Cigarette Draw Resistance, unit Pa；Cpd indicates that cigarette closes the resistance to suction of suction, unit Pa；Er indicates cigarette-opening
The resistance to suction and cigarette of suction close the difference between the resistance to suction of suction, unit Pa.
Embodiment 1
Certain brand cigarette part index number design standard and raw and auxiliary material characteristic are as shown in table 1:
1 cigarette index Design standard of table and raw and auxiliary material characteristic
(1) resistance to suction (Cigarette Draw Resistance that closing filter segment measures) that cigarette closes suction is calculated:
(2) it calculates cigarette filter ventilation rate: cigarette filter ventilation rate is calculated as follows:
Fv=(- 43.9+1.55 × l2-197.3×ρ2+0.53×l1+ 0.01 × st × d) × j=-43.9+1.55 ×
30-197.3 × 0.16+0.53 × 54+0.01 × 280 × 7.72=22.8%
(3) resistance to suction and cigarette for calculating cigarette-opening suction close the difference between the resistance to suction of suction:
(4) it calculates Cigarette Draw Resistance: Cigarette Draw Resistance is calculated as follows:
Pd=cpd-er=1210.6-176.6=1034Pa.
(5) cigarette paper ventilation rate and total ventilation rate are calculated:
When air permeability of tipping paper is not 0, total ventilation rate, then computation paper ventilation rate, calculation formula are first calculated are as follows:
Tv=-18.09+1.06 × fv+0.017 × pd+2.6 × 10-4×jt×d×l1=-18.09+1.06 × 22.8+
0.017×1034+2.6×10-4× 60 × 7.72 × 54=30.2%
Pv=tv-fv=30.2-22.8=7.4%.
Prediction result and measured result are compared, as shown in the table:
The actual measurement of table 2 and prediction result contrast table
| Index | Actual measurement | Prediction | Relative error % |
| Resistance to suction Pa | 1044 | 1034 | 0.96 |
| Total ventilation rate % | 27.4 | 30.2 | 10.22 |
From table 2 it can be seen that the present invention can be according to Cigarette design index and related raw and auxiliary material specification to cigarette ventilation rate
Preferably predicted.
Embodiment 2
Further to verify prediction effect of the invention, choose different size trade mark cigarette and predicted, and with practical survey
Amount result compares, as a result as follows:
3 Cigarette design index of table and raw and auxiliary material characteristic
4 prediction result of table and measured result contrast table
Can be seen that resistance to suction worst error by the prediction result to different brands different size cigarette physical index is
84Pa, mean absolute error 33Pa, average relative error 2.68%, total ventilation rate average relative error are 10.66%, in advance
It is ideal to survey result.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And deformation, the scope of the present invention is by appended claims and its equivalent limits.
Claims (6)
1. a kind of method for predicting cigarette ventilation rate, which comprises the following steps:
1) cigarette raw and auxiliary material characteristic and Cigarettesize data are obtained；
2) judge the air permeability of cork paper, if the air permeability of the cork paper is 0, first calculate cigarette paper ventilation rate pv, then count
Calculate total ventilation rate tv, calculation formula are as follows:
Pv=-7.78+6.1 × 10-7×jt×d×l1×pd
Tv=pv；
Wherein, jt indicates air permeance for cigarette paper, unit cu；D indicates cigarette diameter, unit mm；l1Indicate no mouth cigarette length, it is single
Position mm；Pd indicates Cigarette Draw Resistance, unit Pa；
If the air permeability of the cork paper is not 0, total ventilation rate tv is first calculated, then calculates cigarette paper ventilation rate pv, is calculated public
Formula are as follows:
Tv=-18.09+1.06 × fv+0.017 × pd+2.6 × 10-4×jt×d×l1
Pv=tv-fv；
Wherein, fv indicates cigarette filter ventilation rate；Pd indicates Cigarette Draw Resistance, and unit Pa, jt indicate air permeance for cigarette paper, unit
cu；D indicates cigarette diameter, unit mm；l1Indicate no mouth cigarette length, unit mm.
2. the method for prediction cigarette ventilation rate according to claim 1, which is characterized in that the Cigarette Draw Resistance passes through following
Step obtains:
1) the resistance to suction cpd that cigarette closes suction is obtained, is calculated as follows:
Wherein, ρ1Indicate tobacco density in cigarette, unit g/cm3；Tc indicates finished product tobacco fill value, unit cm3/g；l1Indicate without
Mouth cigarette length, unit mm；R indicates that finished product tobacco fill value reduces ratio；D indicates cigarette diameter, unit mm；Lbpd indicates 4
Double-length filter stick pressure drop, unit Pa；
2) cigarette filter ventilation rate fv is obtained, is calculated as follows:
Fv=(- 43.9+1.55 × l2-197.3×ρ2+0.53×l1+ 0.01 × st × d) × j,
Wherein, l2Indicate filter lengths, unit mm；ρ2Indicate filter stick density, unit g/cm3；l1Indicate no mouth cigarette length, unit
mm；St indicates air permeability of tipping paper, unit cu；J is indicator variable, when air permeability of tipping paper is 0, j=0, when cork paper is saturating
When manner is not 0, j=1；
3) resistance to suction and cigarette for calculating cigarette-opening suction close the difference e r between the resistance to suction of suction, are calculated as follows:
Wherein, l indicates cigarette length, unit mm；Fv indicates cigarette filter ventilation rate；D indicates cigarette diameter, unit mm；J is to refer to
Show variable, when air permeability of tipping paper is 0, j=0, when air permeability of tipping paper is not 0, j=1；
4) Cigarette Draw Resistance pd is calculated, is calculated as follows:
Pd=cpd-er.
3. the method for prediction cigarette ventilation rate according to claim 1, which is characterized in that the cigarette raw and auxiliary material characteristic
And Cigarettesize data include finished cut tobacco Filling power, filtering rod, air permeance for cigarette paper, tipping paper air permeability, cigarette length,
Cigarette circumference and filter lengths.
4. it is according to claim 3 prediction cigarette ventilation rate method, which is characterized in that the finished cut tobacco Filling power with
The cigarette brand Filling power of close tobacco leaf formulation and identical tobacco processing equipment is empirical value.
5. the method for prediction cigarette ventilation rate according to claim 1, which is characterized in that the cork paper includes punching water
Loose paper and not hole-punching huon pine paper.
6. the method for prediction cigarette ventilation rate according to claim 5, which is characterized in that when the cork paper does not punch,
Its air permeability is set as 0, filter ventilation rates 0.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115153084A (en) * | 2022-07-06 | 2022-10-11 | 红云红河烟草(集团)有限责任公司 | Control method for filter stick pressure drop monitoring and distribution through accurate control of cigarette resistance |
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