CN102721623A - Quantitative test method for tobaccos reconstituted by papermaking method - Google Patents

Abstract

The invention relates to a quantitative test method for tobaccos reconstituted by a papermaking method, belonging to the technical field of testing of physical indexes of reconstituted tobaccos. The test method comprises the following steps of: preparing samples: punching each sample into circular pieces by a puncher; correcting and adjusting an instrument; testing 30 complete punched circular pieces selected from each sample; and calculating according to a quantitative test result, wherein the calculation result reserves three decimal fractions. The quantitative test method disclosed by the invention has the advantages of safety, simplicity, convenience, accuracy and precision, and the tested indexes of the tobaccos reconstituted by the papermaking method can represent the physical properties of the tobaccos.

Description

The assay method that a kind of papermaking-method reconstituted tobaccos is quantitative

Technical field:

The present invention relates to a kind of mensuration papermaking-method reconstituted tobaccos quantitative methods, belong to reconstituted tobacco physical index determination techniques field.

Background technology:

Quantitatively, refer under the standard test method regulation, measure the quality of papermaking-method reconstituted tobaccos unit area, with g/m ²Expression.

Have in the tobacco leaf and quantitatively similar physical index, be called unit leaf area quality or leaf quality, the researchist has much for the difference comparative studies of the unit leaf area quality of different regions and flue-cured tobacco cultivars.The quantitative of papermaking-method reconstituted tobaccos also is one of its important physical index, quantitatively is the embodiment of papermaking-method reconstituted tobaccos processing characteristics and quality.Papermaking-method reconstituted tobaccos YC/T 16.3-2003 regulation, the quantitative of papermaking-method reconstituted tobaccos should≤110 g/m ²This standard is also made stipulations to the quantitative mensuration of papermaking-method reconstituted tobaccos simultaneously, and promptly according to the method for paper and cardboard, measuring 5 areas is 100 cm ²Square or the quality of circular specimen, according to the formula calculation sample quantitatively.Yet this method is only applicable to the sample of not cutting, only is applicable to that promptly reconstituted tobacco manufacturing enterprise carries out self check to its quality; As far as using the cigarette enterprise of reconstituted tobacco finished product, be subject to the size of sample and irregularly shaped, can't carry out quality monitoring to it.Given this, that need seek a kind of simple possible is suitable for the quantitative assay method of papermaking-method reconstituted tobaccos finished product, for the quantitative target of assay reconstituted tobacco provides reference.

Through the document retrieval, do not see the public reported identical with the present invention.

Summary of the invention:

The object of the present invention is to provide a kind of easy, accurate and accurate papermaking-method reconstituted tobaccos quantitative methods of measuring, characterize the physical features of reconstituted tobaccos through these indexs.

The concrete steps of mensuration papermaking-method reconstituted tobaccos method of the present invention are following:

(1) preparation of sample

Choose intact unabroken papermaking-method reconstituted tobaccos, with the card punch of interior diameter 18 mm, punching at random, 30 of each sample disks that therefrom picked at random is complete;

Sample is 22 ℃ ± 1 ℃ in temperature, and relative humidity is balance 48 h in 60% ± 3% the climatic chamber;

(2) calibration of instrument and adjusting

Basically calibrate and regulate according to conventional method, wherein:

The calibration of balance: sample is below 5 g, with scale division value 0.001 g balance; Sample is more than 5 g, with scale division value 0.01 g balance; Sample is below 50 g, with scale division value 0.1 g balance;

After every dozen of 1000 appearance of new card punch, with micrometer inside caliper the card punch diameter is calibrated, then change as defective;

(3) quantitative mensuration

Under the test atmospheric environment of GB/T1644 regulation, testing, is 1 group with 10 samples, and its mass M of weighing, result keep 4 decimals.3 groups of samples of difference weighing;

(4) the quantitative G of sample calculates by formula (1), (2), and numerical value is with g/m ²Expression;

$S=\mathrm{\π}\×r^2\·\·\·\left(1\right)$

In the formula: S: the area of monolithic sample, mm ²R: the inside radius of disk, mm;

$G=\frac{M}{(S\×10)}\×{10}^6\·\·\·\left(2\right)$

In the formula: G: quantitatively, g/m ²The gross mass of M:10 sheet sample, g; S: the area of monolithic sample, mm ²

That method of the present invention has is easy, accurately reach accurate advantage, and the papermaking-method reconstituted tobaccos quantitative target of mensuration characterizes the physical characteristics of reconstituted tobacco.

Embodiment:

The concrete steps that mensuration papermaking-method reconstituted tobaccos quantitative methods of the present invention is partly described by summary of the invention are carried out.

1. supply examination papermaking-method reconstituted tobaccos sample: RT74, RT75, RT76 take from domestic different production enterprise.

2. test apparatus: analytical balance (sensibility reciprocal, 0.0001 g, Switzerland Mei Teletuo benefit), card punch (interior diameter is 18 mm, self-control), climatic chamber (Buchbinder, Germany).

3. the result of quantitative determination process, the different quantity of sampling quantity of quantitative test adopt the test figure of 10 processing more stable, and collimation is better, and table 1 is described for the measured value statistic of quantitative test.

The different quantity of sampling quantity measured value statistics of table 1 quantitative test are described

From finding out the table 1 as a result, the data RSD value that records is explained this detection method stability better less than 2%.Because the difference of its production technology, the quantitative and makings of papermaking-method reconstituted tobaccos has certain difference.

The method provides certain reference in the time of giving papermaking-method reconstituted tobaccos workers test sample quantitative, has also established certain basis for the work of carrying out related fields from now on.

Claims (1)

1. measure the papermaking-method reconstituted tobaccos quantitative methods for one kind, it is following to it is characterized in that measuring the quantitative concrete steps of papermaking-method reconstituted tobaccos:

(1) preparation of sample

Choose intact unabroken papermaking-method reconstituted tobaccos, with the card punch of interior diameter 18 mm, punching at random, 30 of each sample disks that therefrom picked at random is complete;

Sample is 22 ℃ ± 1 ℃ in temperature, and relative humidity is balance 48 h in 60% ± 3% the climatic chamber;

(2) calibration of instrument and adjusting

Basically calibrate and regulate according to conventional method, wherein:

The calibration of balance: sample is below 5 g, with scale division value 0.001 g balance; Sample is more than 5 g, with scale division value 0.01 g balance; Sample is below 50 g, with scale division value 0.1 g balance;

After every dozen of 1000 appearance of new card punch, with micrometer inside caliper the card punch diameter is calibrated, as then defective

Change;

(3) quantitative mensuration

Under the test atmospheric environment of GB/T1644 regulation, testing, is 1 group with 10 samples, and its mass M of weighing, result keep 4 decimals.3 groups of samples of difference weighing;

(4) the quantitative G of sample calculates by formula (1), (2), and numerical value is with g/m ²Expression;

$S=\mathrm{\π}\×r^2\·\·\·\left(1\right)$

In the formula: S: the area of monolithic sample, mm ²R: the inside radius of disk, mm;

$G=\frac{M}{(S\×10)}\×{10}^6\·\·\·\left(2\right)$

In the formula: G: quantitatively, g/m ²The gross mass of M:10 sheet sample, g; S: the area of monolithic sample, mm ²