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Method for quantitatively evaluating uniformity of cigarette density distribution

A technology of density distribution and quantitative evaluation, applied in the field of tobacco processing, to achieve the effect of simple and feasible method and improving the quality of cigarettes

Inactive Publication Date: 2014-11-26
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, methods for quantitatively evaluating the uniformity of cigarette density distribution are rarely reported

Method used

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  • Method for quantitatively evaluating uniformity of cigarette density distribution
  • Method for quantitatively evaluating uniformity of cigarette density distribution
  • Method for quantitatively evaluating uniformity of cigarette density distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Comparative analysis of the uniformity of cigarette density distribution of different cigarette brands

[0025] Samples: domestic cigarette brands Yunyan (purple) and Yunyan (soft treasure);

[0026] Instruments: Sodiscan-DP microwave moisture density analyzer (Korber, Germany); XS104 Mettler electronic balance with an accuracy of 0.1 mg (Mettler, Switzerland).

[0027] Specific steps are as follows:

[0028] 1. Determination of cigarette length:

[0029] The cigarettes of Yunyan (purple) and Yunyan (soft treasure) have a length of 84mm, a filter rod length of 25mm, a single weight of 0.895g, and a circumference of 24.30mm. These data provide basic data for the next step of cigarette density determination, calibration of instrument parameters and drawing of cigarette density distribution curve.

[0030] 2. Determination of cigarette density distribution data:

[0031] (1) First turn on the Sodiscan-DP microwave moisture density analyzer and preheat it for...

Embodiment 2

[0047] Example 2: Analysis of the influence of cigarette weight on the uniformity of cigarette density distribution

[0048] Sample: Yunyan (purple), a domestic cigarette brand, the cigarette specifications are: the length of the cigarette is 84mm, and the length of the filter rod is 25mm. The weight gradient of cigarettes is set to 0.850g / cigarette, 0.870g / cigarette, 0.890g / cigarette, 0.910g / cigarette and 0.930g / cigarette.

[0049] The experimental method step of embodiment 2 is consistent with embodiment 1. The density distribution curves of Yunyan (purple) cigarettes with different cigarette weights are as follows image 3 As shown, the uniformity of the cigarette density distribution is shown in Table 3.

[0050] Table 3 Uniformity of density distribution of Yunyan (purple) cigarettes with different cigarette weights

[0051]

[0052]

[0053] From image 3 It can be seen from Table 3 that the weight of the cigarette has a great influence on the uniformity of the...

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Abstract

The invention discloses a method for quantitatively evaluating the uniformity of the cigarette density distribution. The method comprises the following steps: firstly making a cigarette density distribution curve according to the characteristic that the cigarette density is generally distributed in a way that two ends are dense, removing a dense end of a cigarette by utilizing an inflexion method, and then quantitatively evaluating the uniformity of the cigarette density distribution by utilizing a coefficient of variation method. The method is simple and feasible and capable of quantitatively evaluating the uniformity of the cigarette density distribution. By adopting the method, the mass stability of the cigarette after being rolled can be objectively reflected, and reference can be further provided for the improvement and optimized control of the cigarette quality.

Description

technical field [0001] The invention belongs to the technical field of tobacco processing, and in particular relates to a method for quantitatively evaluating the uniformity of cigarette density distribution. Background technique [0002] Cigarette weight is an important physical index in the process of cigarette rolling. The size and stability of the weight of a cigarette directly affects the physical indicators of cigarettes such as cigarette draw resistance, hardness, and total ventilation rate, as well as smoke indicators such as tar, nicotine, and CO, and then affects the intrinsic quality of cigarettes. As we all know, the density of cigarettes is closely related to the weight of cigarettes. Under certain cigarette specifications (cigarette length, filter rod length, circumference, etc.), that is, under the condition of a certain volume filled with shredded tobacco, the density of cigarettes is linearly related to the weight of cigarettes. Therefore, the cigarette de...

Claims

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Application Information

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IPC IPC(8): G01N9/24
Inventor 唐军周冰唐丽何邦华汪显国刘泽
Owner CHINA TOBACCO YUNNAN IND
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