CN117554229A - Method for rapidly determining coating rate of reconstituted tobacco - Google Patents
Method for rapidly determining coating rate of reconstituted tobacco Download PDFInfo
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- CN117554229A CN117554229A CN202311507194.XA CN202311507194A CN117554229A CN 117554229 A CN117554229 A CN 117554229A CN 202311507194 A CN202311507194 A CN 202311507194A CN 117554229 A CN117554229 A CN 117554229A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 111
- 238000000576 coating method Methods 0.000 title claims abstract description 111
- 241000208125 Nicotiana Species 0.000 title claims abstract description 44
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 95
- 239000000758 substrate Substances 0.000 claims abstract description 85
- 238000005070 sampling Methods 0.000 claims abstract description 40
- 238000005303 weighing Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000011002 quantification Methods 0.000 claims abstract description 6
- 238000003892 spreading Methods 0.000 claims abstract description 5
- 230000007480 spreading Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 37
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 16
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 235000019505 tobacco product Nutrition 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a method for rapidly determining the coating rate of reconstituted tobacco, which comprises the following steps: step (1) sampling a sample; preparing a sample in the step (2); and (3) microwave heating: spreading the prepared samples in a microwave oven according to an operation side and a transmission side respectively, setting microwave power and time, and taking out the samples immediately after the microwave oven stops running; and (4) heating in an oven: after rapidly taking out the sample, laying the sample in a middle layer of a baking oven with stable temperature, and rapidly taking out the sample after baking; and (5) weighing: the sample was placed on a beaker balance and weighed to a precision of 0.001g, and the mass of the substrate was recorded as m 1 The sheet mass is denoted as m 2 The method comprises the steps of carrying out a first treatment on the surface of the And (6) calculating absolute dry quantification and coating rate. The method for rapidly determining the coating rate of the reconstituted tobacco combines the microwaves and the oven, greatly shortens the determination time of the coating rate of the reconstituted tobacco, and is characterized by comprising two traditional methodsThe hours were shortened to 5 minutes.
Description
Technical Field
The invention relates to a tobacco detection technology, in particular to a method for rapidly determining the coating rate of reconstituted tobacco.
Background
The coating rate of the reconstituted tobacco product is an important index, and has important guiding significance for the quality evaluation of the reconstituted tobacco product. It affects the characteristics of the finished product such as whether the appearance color distribution is uniform, whether the chemical components and the physical characteristics are stable, etc.
According to the measurement of the coating rate of the reconstituted tobacco in industry standard YC/T572-2018, an oven method is mainly used as the measurement of the coating rate, under the condition that the temperature of the oven is (100+/-1.0), a prepared substrate (namely, a paper web sheet formed by the pulp after being formed by a net part, dehydrated and dried and before being coated in the production process of the reconstituted tobacco) and a sheet (namely, a wide sheet before being cut by the tobacco sheet) sample are respectively placed in a weighing dish with known dry weight, the weighing dish is placed in an intermediate layer of the oven, the weighing dish is taken out after being dried for 120 minutes, the weighing is carried out after the weighing is carried out in a dryer, and the coating rate of the reconstituted tobacco is obtained by calculating the absolute dry quantitative difference value of the finished product and the substrate to account for the absolute dry quantitative percentage of the finished product. According to the detection of the line standard to the coating rate, the oven is required to be placed for two hours, and then the oven is taken out to be cooled to normal temperature, and then the calculation result is weighed, so that the time consumption is long, the shift detection rate is too low, the delay of the detection result is too long, the real-time regulation and control of production cannot be guided, and further, the stability of the product quality cannot be guaranteed.
Therefore, in order to monitor the variation of the coating rate at high frequency, guide the production in time, and reduce the fluctuation of the product quality, a method capable of rapidly detecting the coating rate is needed.
Disclosure of Invention
The invention aims to provide a method for rapidly determining the coating rate of reconstituted tobacco, aiming at the problem that the conventional measurement of the coating rate of reconstituted tobacco is too long, and the method combines microwaves with an oven, so that the measurement time of the coating rate of reconstituted tobacco is greatly shortened from two hours to 5 minutes.
In order to achieve the above purpose, the invention adopts the following technical scheme: a method for rapidly determining the coating rate of reconstituted tobacco comprises the following steps:
step (1) sample sampling: under normal production operation, respectively taking samples at two sides according to the principle of taking one side sample by a sheet base and immediately sending the sample to prepare the sample, taking samples at two sides to represent the whole sample, putting the taken pretreated sample into a sampling box smoothly, preventing the sample from shrinking due to water loss, and sending the sample to a testing room for preparing the sample immediately;
sample preparation in step (2): the pretreated sample is sent to a testing room and is immediately prepared in a quantitative sampler, and marks are made;
and (3) microwave heating: spreading the prepared samples in a microwave oven according to an operation side and a transmission side respectively, setting microwave power and time, and taking out the samples immediately after the microwave oven stops running;
and (4) heating in an oven: quickly taking out the samples, respectively spreading the samples on the middle layer of the oven with stable temperature, and quickly taking out the samples after drying;
and (5) weighing: the sample was placed on a beaker balance for weighing and recording, the accuracy was measured at 0.001g, and the mass of the substrate was recorded as m 1 The sheet mass is denoted as m 2 ；
And (6) calculating absolute dry quantification and coating rate:
(1) absolute dry quantitative calculation of substrate and sheet: substrate absolute dry rationDenoted as G 1 ，The absolute dry quantity of the flake is marked as G 2 ，/>
(2) Coating rate calculation: the sample coating rate was noted as C (%),
note that: the operating side and the transmission side coating rates were calculated independently, respectively, and the average of the operating side and transmission side coating rates represents the coating rate at the sampling time point.
Further, the production operation of step (1) is normal: the system process and equipment involved in the papermaking working section are stable in operation, and the phenomena of edge drop, paper breakage, uneven coating and the like do not occur.
Further, the two sides of step (1): namely, an operation side and a transmission side, wherein the operation side is a direction side close to the operation table, and the transmission side is a direction side close to the equipment drive.
Further, the whole of step (1): i.e. the width from the operating side edge to the drive side edge, the overall width is 3.7M.
Further, in the step (1), the substrate takes a side sample and immediately sends the sample to the sample drawing principle: cutting required film base samples from an operation side and a transmission side according to target sizes (the transverse width is more than or equal to 70cm and the longitudinal direction is more than 100 cm) by using a production on-line mechanical paper cutter at a small cylinder part, immediately conveying the film base samples to a detection chamber for sample preparation, and controlling the whole-process time to be within 0.5-1 min from the time of taking the single sample to the detection chamber for sample preparation.
Further, step (1) samples the position: the specific position of the sheet base sample is a small cylinder, before coating, the sheet sample position is an oven, and after the sheet base sample is a slicer.
Further, step (1) the pre-treatment of the sample: the substrate and the sheet are not folded, shrunk and broken.
Further, the sampling cassette of step (1): to prevent shrinkage due to moisture loss, the material was an expandable polystyrene foam box (with its own sealing lid) with a gauge of 80 x 40 x 15cm.
Further, the preparation of the pretreated sample and the measurement of the sample in the step (2) are carried out in a detection chamber environment with a temperature of (22.0.2.0) DEG C and a relative humidity of (60.0.5.0)%.
Further, the sample preparation in the step (2) requires: taking out the pretreated sample from the sampling box, immediately tiling and folding the pretreated sample, enabling the pretreated sample to be in a double-layer state, enabling the same outer side edge to be aligned, enabling the pretreated sample to be 20cm away from the outer side edge transversely inwards, putting the pretreated sample into a quantitative sampler flatly, transversely cutting the pretreated sample for 3 times, keeping a 3cm distance between each two slices, enabling each 6 slices of single-side-slice base or slice sample to be respectively used for marking the sliced sample.
Further, the quantitative sampler is a circular quantitative sampler, and the sampling area is 100cm 2 。
Further, the sample in the step (3) is laid flat in a microwave oven, so that the sample can not be placed so as to have a cross phenomenon.
Further, the microwave power and time in the step (3) are 80-100P, and the microwave time is 1-3min.
Further, the layer in the oven in the step (4) is that an oven partition plate is placed at 1/2 of the inner space.
Further, the drying temperature in the step (4) is 115-125 ℃, and the control precision of the temperature in the oven is (set value + -1) °c.
Further, the drying time in the step (4) is 2-5 minutes.
Further, the balance for weighing the sample comprises a balance main body, a windshield and a weighing disc, wherein a dry and clean 300ml beaker with the bottom diameter of 85mm is placed on the balance weighing disc.
Further, the substrate mass m of the step (5) 1 The number of substrates is 6, and the moisture of the substrates is infinitely close to 0 mass in g after microwave heating and oven heating.
Further, the sheet mass m of step (5) 2 The number of sheets is 6 sheets, and the moisture of the sheets is infinitely close to 0 mass in g after microwave heating and oven heating.
The invention relates to a method for rapidly determining the coating rate of reconstituted tobacco, which has the following advantages compared with the conventional determination technology:
(1) Based on the industry standard detection principle, the microwave is innovatively combined with the oven, so that the detection time of the coating rate is greatly shortened;
(2) In the aspect of economy, as the coating rate index directly influences the physicochemical index and the sensory quality of the product, the numerical interval for monitoring the coating rate in real time is particularly important in the industry, if the detection is carried out according to the industry detection standard YC/T572-2018 reconstituted tobacco coating rate measurement oven method, the detection duration is at least not less than two hours, during the period, the fluctuation of a production system or the deviation of a regulation and control interval from the required range can occur, and the production cannot be accurately and timely regulated back due to the lag of the detection result, so that the quality of the product is possibly unqualified, a certain amount of economic loss is caused, and even accidents such as the reduction of the customer trust level can be possibly caused. Therefore, the method has important significance for enterprise production by measuring the rapid coating rate and monitoring key indexes in time;
(3) The operation is simple, the applicability is strong, and the result is accurate and stable.
In conclusion, the coating rate measuring method has the advantages that practical tests are obtained from the aspects of detection rate and feasibility of practical operation, and the applicability and stability of the method can be popularized and applied in the industry, so that the method has certain popularization value.
Drawings
FIG. 1 is a schematic illustration of sample preparation;
FIG. 2 is a flow chart of a method for rapidly determining the coating rate of reconstituted tobacco.
Detailed Description
The embodiment discloses a method for rapidly determining the coating rate of reconstituted tobacco, as shown in fig. 2, and the following is further described by combining a comparative example and an embodiment:
comparative example 1
The method for measuring the coating rate of the reconstituted tobacco by using an oven method for measuring the coating rate of industry standard YC/T572-2018 reconstituted tobacco in the production process of the A brand is carried out by the company, wherein the product model is A brand, and the specific steps are as follows:
the coating rate of the reconstituted tobacco of the A brand is (46.5+/-1)
(1) Sampling a sample: under the condition that the production operation of the A-plate is normal and the coating is uniform, firstly taking down the operation side substrate at the small cylinder part, putting the operation side substrate into the sampling box, immediately feeding the operation side substrate into the detection chamber, then taking down the transmission side substrate, putting the transmission side substrate into the sampling box, feeding the transmission side substrate into the detection chamber, firstly taking down the operation side sheet before the slicer after the oven, and then taking down the transmission side sheet and feeding the transmission side sheet into the detection chamber.
(2) Sample preparation: the pretreatment substrate is aligned with the same outer side edge according to the principle of sampling one side sample and immediately feeding the sample, and the transverse sample sampling slice is started at the position 20cm away from the edge, and 100cm is used for the pretreatment substrate 2 The quantitative sampler transversely cuts the sample for 3 times, 3cm distance is kept between each slice, a single side slice sample is 6 slices, a corresponding side slice sample is 6 slices, the sliced sample is marked, and the sample to be measured is measured.
(3) Sample detection: measuring the coating rate according to an oven method for measuring the coating rate of reconstituted tobacco with industry standard YC/T572-2018, placing a substrate and a sheet into a middle partition plate of an oven at the temperature of 100.0+/-1.0 ℃, taking out after the sample is baked for 120min, placing into a dryer for cooling to room temperature, taking out the sample for weighing, and operating the mass m of the side substrate 1 Operating side sheet mass m 2 Transmission side substrate mass m 3 Transmission side sheet mass m 4 Accurate to 0.001g.
(4) Calculation of absolute dry ration and coating rate of A brand at 8:30 am:
absolute dry ration of A board (operation side and transmission side)
The absolute dry quantity of the substrate at the operation side is marked as G 1 ，The absolute dry quantity of the operation side sheet is marked as G 2 ，/>Absolute dry quantitative marking of the substrate at the transmission side is G 3 ，/>Absolute dry quantitative marking of the transmission side sheet is G 4 ，/>
Coating rate of A brand (operation side and transmission side)
The application rate on the operating side was designated C Operation device ，
The coating rate of the transmission side is marked as C Transmission device ，
The coating rate of the whole web is C Finishing the whole ，
The industry standard coating rate is measured for at least two hours.
Example 1
The embodiment discloses a method for rapidly determining the coating rate of reconstituted tobacco, which also performs verification on a company product model A, and specifically comprises the following steps:
the coating rate of the reconstituted tobacco of the A brand is (46.5+/-1)
(1) Sampling a sample: under the condition that the production operation of the A-plate is normal and the coating is uniform, firstly taking down the operation side substrate at the small cylinder part, putting the operation side substrate into the sampling box, immediately feeding the operation side substrate into the detection chamber, then taking down the transmission side substrate, putting the transmission side substrate into the sampling box, feeding the transmission side substrate into the detection chamber, firstly taking down the operation side sheet before the slicer after the oven, and then taking down the transmission side sheet and feeding the transmission side sheet into the detection chamber.
(2) Sample preparation: the pretreatment substrate is aligned with the same outer side edge according to the principle of sampling one side sample and immediately feeding the sample, and the transverse sample sampling slice is started at the position 20cm away from the edge, and 100cm is used for the pretreatment substrate 2 The quantitative sampler cuts the sample transversely 3 times, each slice keeps 3cm spacing, and one side is providedAnd 6 pieces of substrate samples, corresponding to the 6 pieces of side sheet samples, marking the sliced samples, and measuring.
(3) Microwave heating: the marked samples are respectively paved in a microwave oven according to an operation side and a transmission side, the microwave power is set to be 100P, the microwave time is set to be 2min, and the samples are immediately taken out after the microwave oven stops running.
(4) And (3) heating in an oven: the sample is quickly taken out, the middle layer of the oven with stable temperature is placed on the operation side and the transmission side, the temperature of the oven is set to 120 ℃, the time is set to 3min, and the sample is quickly taken out and placed on a beaker with 300ml for weighing and recording, the quality of the operation side sheet mass Ma, the quality of the operation side sheet Mb, the quality of the transmission side sheet Mc and the quality of the transmission side sheet Md are accurately 0.001g.
(5) Calculation of absolute dry ration and coating rate of A brand at 8:30 am:
and (3) calculating absolute dry quantification and coating rate of the A brand:
absolute dry ration of A board (operation side and transmission side)
The absolute dry quantity of the substrate at the operation side is recorded as Ga,
the absolute dry basis of the operating side sheet was designated Gb,
the absolute dry quantity of the substrate at the transmission side is recorded as Gc,
the absolute dry quantity of the transmission side sheet is marked as Gd,
coating ratio of A brand 8:30 am (operation side and transmission side)
The operating side coating rate was noted as C-run,
the coating rate at the transmission side is marked as C transmission,
the coating rate of the whole web is C whole,
the method for rapidly determining the coating rate only needs 5 minutes.
Comparative example 2
The method for measuring the coating rate of the reconstituted tobacco by using an oven method for measuring the coating rate of industry standard YC/T572-2018 reconstituted tobacco in the production process of the brand B is carried out by the company, wherein the product model is brand B, and comprises the following specific steps of:
the coating rate of the reconstituted tobacco of the B brand is (43+/-1)
(1) Sampling a sample: under the condition that the production operation of the B brand is normal and the coating is uniform, firstly taking down the operation side substrate at the small cylinder part, putting the operation side substrate into the sampling box, immediately feeding the operation side substrate into the detection chamber, then taking down the transmission side substrate, putting the transmission side substrate into the sampling box, feeding the transmission side substrate into the detection chamber, firstly taking down the operation side sheet before the slicer after the oven, and then taking down the transmission side sheet and feeding the transmission side sheet into the detection chamber.
(2) Sample preparation: the pretreatment substrate is aligned with the same outer side edge according to the principle of sampling one side sample and immediately feeding the sample, and the transverse sample sampling slice is started at the position 20cm away from the edge, and 100cm is used for the pretreatment substrate 2 The quantitative sampler transversely cuts the sample for 3 times, 3cm distance is kept between each slice, a single side slice sample is 6 slices, a corresponding side slice sample is 6 slices, the sliced sample is marked, and the sample to be measured is measured.
(3) Sample detection: measuring the coating rate according to an oven method for measuring the coating rate of reconstituted tobacco with industry standard YC/T572-2018, placing a substrate and a sheet into a middle partition plate of an oven at the temperature of 100.0+/-1.0 ℃, taking out after the sample is baked for 120min, placing into a dryer for cooling to room temperature, taking out the sample for weighing, and operating the mass m of the side substrate 1 Operating side sheet mass m 2 Transmission side substrate mass m 3 Transmission side sheet mass m 4 Accurate to 0.001g.
(4) Calculation of absolute dry ration and coating rate of 10:30 a.m. of the B brand:
absolute dry ration of B brand (operation side and transmission side)
The absolute dry quantity of the substrate at the operation side is marked as G1,
the absolute dry quantity of the operation side sheet is marked as G2,
the absolute dry quantity of the substrate at the transmission side is marked as G3,
the absolute dry quantity of the transmission side sheet is marked as G4,
coating rate of B brand (operation side and transmission side)
The operating side coating rate was noted as C-run,
the coating rate at the transmission side is marked as C transmission,
the coating rate of the whole web is C whole,
the industry standard coating rate is measured for at least two hours.
Example 2
The embodiment discloses a method for rapidly determining the coating rate of reconstituted tobacco, which also performs verification on a company product model B, and comprises the following specific steps:
the coating rate of the reconstituted tobacco of the B brand is (43+/-1)
(1) Sampling a sample: under the condition that the production operation of the B brand is normal and the coating is uniform, firstly taking down the operation side substrate at the small cylinder part, putting the operation side substrate into the sampling box, immediately feeding the operation side substrate into the detection chamber, then taking down the transmission side substrate, putting the transmission side substrate into the sampling box, feeding the transmission side substrate into the detection chamber, firstly taking down the operation side sheet before the slicer after the oven, and then taking down the transmission side sheet and feeding the transmission side sheet into the detection chamber.
(2) Sample preparation: the pretreatment substrate is aligned with the same outer side edge according to the principle of sampling one side sample and immediately feeding the sample, and the transverse sample sampling slice is started at the position 20cm away from the edge, and 100cm is used for the pretreatment substrate 2 The quantitative sampler transversely cuts the sample for 3 times, 3cm distance is kept between each slice, a single side slice sample is 6 slices, a corresponding side slice sample is 6 slices, the sliced sample is marked, and the sample to be measured is measured.
(3) Microwave heating: the marked samples are respectively paved in a microwave oven according to an operation side and a transmission side, the microwave power is set to be 100P, the microwave time is set to be 2min, and the samples are immediately taken out after the microwave oven stops running.
(4) And (3) heating in an oven: the sample is quickly taken out, the middle layer of the oven with stable temperature is placed on the operation side and the transmission side, the temperature of the oven is set to 120 ℃, the time is set to 3min, and the sample is quickly taken out and placed on a beaker with 300ml for weighing and recording, the quality of the operation side sheet mass Ma, the quality of the operation side sheet Mb, the quality of the transmission side sheet Mc and the quality of the transmission side sheet Md are accurately 0.001g.
(6) Calculation of absolute dry ration and coating rate of 10:30 a.m. of the B brand:
and (3) calculating absolute dry quantification and coating rate of the B brand:
absolute dry ration of B brand (operation side and transmission side)
The absolute dry quantity of the substrate at the operation side is recorded as Ga,
the absolute dry basis of the operating side sheet was designated Gb,
the absolute dry quantity of the substrate at the transmission side is recorded as Gc,
the absolute dry quantity of the transmission side sheet is marked as Gd,
coating ratio of 10:30 of the B brand am (operation side and transmission side)
The operating side coating rate was noted as C-run,
the coating rate at the transmission side is marked as C transmission,
the coating rate of the whole web is C whole,
the method for rapidly determining the coating rate only needs 5 minutes.
Comparative example 3
The method for measuring the coating rate of the reconstituted tobacco by using an oven method for measuring the coating rate of industry standard YC/T572-2018 reconstituted tobacco in the production process of the C brand is carried out by the company, wherein the model is the C brand, and the specific steps are as follows:
the coating rate of the reconstituted tobacco of the C brand is (41+/-1)
(1) Sampling a sample: under the condition that the production operation of the C plate is normal and the coating is uniform, firstly taking down the operation side substrate at the small cylinder part, putting the operation side substrate into the sampling box, immediately feeding the operation side substrate into the detection chamber, then taking down the transmission side substrate, putting the transmission side substrate into the sampling box, feeding the transmission side substrate into the detection chamber, firstly taking down the operation side sheet before the slicer after the oven, and then taking down the transmission side sheet and feeding the transmission side sheet into the detection chamber.
(2) Sample preparation: the pretreatment substrate is aligned with the same outer side edge according to the principle of sampling one side sample and immediately feeding the sample, and the transverse sample sampling slice is started at the position 20cm away from the edge, and 100cm is used for the pretreatment substrate 2 The quantitative sampler transversely cuts the sample for 3 times, the distance between each two sections is kept at 3cm, a single side sheet sample is 6 pieces, a corresponding side sheet sample is 6 pieces, and the sliced sample is obtainedThe product is marked and tested.
(3) Sample detection: measuring the coating rate according to an oven method for measuring the coating rate of reconstituted tobacco with industry standard YC/T572-2018, placing a substrate and a sheet into a middle partition plate of an oven at the temperature of 100.0+/-1.0 ℃, taking out after the sample is baked for 120min, placing into a dryer for cooling to room temperature, taking out the sample for weighing, and operating the mass m of the side substrate 1 Operating side sheet mass m 2 Transmission side substrate mass m 3 Transmission side sheet mass m 4 Accurate to 0.001g.
(4) Calculation of absolute dry ration and coating rate of 3:30 PM of C brand:
absolute dry ration of C plate (operation side and transmission side)
The absolute dry quantity of the substrate at the operation side is marked as G1,
the absolute dry quantity of the operation side sheet is marked as G2,
the absolute dry quantity of the substrate at the transmission side is marked as G3,
the absolute dry quantity of the transmission side sheet is marked as G4,
coating rate of C plate (operation side and transmission side)
The operating side coating rate was noted as C-run,
the coating rate at the transmission side is marked as C transmission,
the coating rate of the whole web is C whole,
the industry standard coating rate is measured for at least two hours.
Example 3
The embodiment discloses a method for rapidly determining the coating rate of reconstituted tobacco, which also performs verification on a company product model C plate, and comprises the following specific steps:
the coating rate of the reconstituted tobacco of the C brand is (41+/-1)
(1) Sampling a sample: under the condition that the production operation of the C plate is normal and the coating is uniform, firstly taking down the operation side substrate at the small cylinder part, putting the operation side substrate into the sampling box, immediately feeding the operation side substrate into the detection chamber, then taking down the transmission side substrate, putting the transmission side substrate into the sampling box, feeding the transmission side substrate into the detection chamber, firstly taking down the operation side sheet before the slicer after the oven, and then taking down the transmission side sheet and feeding the transmission side sheet into the detection chamber.
(2) Sample preparation: the pretreatment substrate is aligned with the same outer side edge according to the principle of sampling one side sample and immediately feeding the sample, and the transverse sample sampling slice is started at the position 20cm away from the edge, and 100cm is used for the pretreatment substrate 2 The quantitative sampler transversely cuts the sample for 3 times, 3cm distance is kept between each slice, a single side slice sample is 6 slices, a corresponding side slice sample is 6 slices, the sliced sample is marked, and the sample to be measured is measured.
(3) Microwave heating: the marked samples are respectively paved in a microwave oven according to an operation side and a transmission side, the microwave power is set to be 100P, the microwave time is set to be 2min, and the samples are immediately taken out after the microwave oven stops running.
(4) And (3) heating in an oven: the sample is quickly taken out, the middle layer of the oven with stable temperature is placed on the operation side and the transmission side, the temperature of the oven is set to 120 ℃, the time is set to 3min, and the sample is quickly taken out and placed on a beaker with 300ml for weighing and recording, the quality of the operation side sheet mass Ma, the quality of the operation side sheet Mb, the quality of the transmission side sheet Mc and the quality of the transmission side sheet Md are accurately 0.001g.
Calculation of absolute dry ration and coating rate of 3:30 PM of C brand:
calculating absolute dry quantification and coating rate of the C brand:
absolute dry ration of C plate (operation side and transmission side)
The absolute dry quantity of the substrate at the operation side is recorded as Ga,
the absolute dry basis of the operating side sheet was designated Gb,
the absolute dry quantity of the substrate at the transmission side is recorded as Gc,
the absolute dry quantity of the transmission side sheet is marked as Gd,
coating ratio of 3:30 PM of C brand (operation side and transmission side)
The operating side coating rate was noted as C-run,
the coating rate at the transmission side is marked as C transmission,
the coating rate of the whole web is C whole,
the method for rapidly determining the coating rate only needs 5 minutes.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The method for rapidly determining the coating rate of the reconstituted tobacco is characterized by comprising the following steps of:
step (1) sample sampling: under normal production operation, respectively taking samples at two sides according to the principle of taking one side sample by a sheet base and immediately sending the sample to prepare the sample, taking samples at two sides to represent the whole sample, putting the taken pretreated sample into a sampling box smoothly, preventing the sample from shrinking due to water loss, and sending the sample to a testing room for preparing the sample immediately;
sample preparation in step (2): the pretreated sample is sent to a testing room and is immediately prepared in a quantitative sampler, and marks are made;
and (3) microwave heating: spreading the prepared samples in a microwave oven according to an operation side and a transmission side respectively, setting microwave power and time, and taking out the samples immediately after the microwave oven stops running;
and (4) heating in an oven: quickly taking out the samples, respectively spreading the samples on the middle layer of the oven with stable temperature, and quickly taking out the samples after drying;
and (5) weighing: the sample was placed on a beaker balance for weighing and recording, the accuracy was measured at 0.001g, and the mass of the substrate was recorded as m 1 The sheet mass is denoted as m 2 ；
And (6) calculating absolute dry quantification and coating rate:
(1) absolute dry quantitative calculation of substrate and sheet: the absolute dry quantity of the substrate is marked as G 1 ，The absolute dry quantity of the flake is marked as G 2 ，/>
(2) Coating rate calculation: the sample coating rate was noted as C (%),
2. the method for rapidly determining the coating rate of reconstituted tobacco according to claim 1, wherein the two sides of step (1): the operation side and the transmission side, the operation side is the direction side that is close to the operation panel, and the transmission side is the direction side that is close to the equipment drive.
3. The method for rapidly determining the coating rate of reconstituted tobacco according to claim 1, wherein in the step (1), the substrate takes a side sample and immediately sends the sample to the sample drawing principle: and cutting required film base samples from the operation side and the transmission side according to target sizes by using a production on-line mechanical paper cutter at a small cylinder part, immediately conveying the film base samples to a detection chamber for sample preparation, and controlling the whole-process time from the taking of a single sample to the sample preparation of the detection chamber to be within 0.5-1 min.
4. The method for rapidly determining the coating rate of reconstituted tobacco according to claim 1, wherein the sampling position in step (1): the specific position of the sheet sample is the back of the small cylinder, the front of the coating roller, the specific position of the sheet sample is the back of the oven and the front of the slicer.
5. The method for rapidly determining the coating rate of reconstituted tobacco according to claim 1, wherein the preparation of the pre-treated sample and the measurement of the sample in step (2) are performed in a room environment at a temperature of 22.0.2.0 ℃ and a relative humidity of 60.0.5.0%.
6. The method for rapidly determining the coating rate of reconstituted tobacco according to claim 1, wherein the microwave power in step (3) is 80-100P and the microwave time is 1-3min.
7. The method for rapidly determining the coating rate of reconstituted tobacco according to claim 1, wherein the drying temperature in step (4) is 115-125 ℃, and the drying time is 2-5 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311507194.XA CN117554229A (en) | 2023-11-14 | 2023-11-14 | Method for rapidly determining coating rate of reconstituted tobacco |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311507194.XA CN117554229A (en) | 2023-11-14 | 2023-11-14 | Method for rapidly determining coating rate of reconstituted tobacco |
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| CN117554229A true CN117554229A (en) | 2024-02-13 |
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| CN202311507194.XA Pending CN117554229A (en) | 2023-11-14 | 2023-11-14 | Method for rapidly determining coating rate of reconstituted tobacco |
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2023
- 2023-11-14 CN CN202311507194.XA patent/CN117554229A/en active Pending
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