Method and device for detecting airtightness of transparent paper in cigarette packaging based on pressure sensing

Abstract

The invention discloses a method and a device for detecting airtightness of transparent cigarette packing paper based on a pressure sensor. The method comprises the following steps: adjusting the pressure in internal environment and the pressure in external environment of a cigarette packet in a sealed container to be the same as first pressure P1; adjusting the pressure in the external environment of the cigarette packet to be second pressure P2, thereby generating a pressure difference between the internal environment and the external environment of the cigarette packet, wherein the second pressure P2 is not equal to the first pressure P1; acquiring pressure values in the external environment of the cigarette packet in real time until the pressure in the internal environment and the pressure in the external environment of the cigarette packet achieve balance; according to the pressure value in the external environment of the cigarette packet at each moment, obtaining a pressure change curve; according to the pressure change rate, determining the airtightness of the transparent cigarette packing paper. By virtue of the method and the device, the airtightness of both soft and hard transparent cigarette packing paper can be detected simultaneously, so that a sealing mechanism of a cigarette-packing machine can be appropriately adjusted according to the airtightness degree, and good quality can be still maintained after a cigarette is stored for a long time; the detection by the method and the device is non-destructive and a single cigarette packet can be detected repeatedly.

Description

technical field [0001] The invention relates to the technical field of cigarette detection, in particular to a method and device for detecting the airtightness of transparent paper of cigarette packaging based on pressure sensing. Background technique [0002] The airtightness of the transparent paper of cigarette packaging is an important physical index in the production process of cigarettes. A good airtightness can effectively prevent the leakage of cigarette flavor when cigarettes are stored for a long time, and reduce the influence of external temperature and humidity on cigarettes and the influence of moisture. Loss, prolong the storage time of cigarettes. Cigarettes with poor airtightness will cause the fragrance of cigarettes to leak due to long storage time, and changes in the external environment will also lead to dryness and mildew of cigarettes, which seriously affects the quality of cigarettes. [0003] In the production of cigarettes, due to various factors, d...

AI Technical Summary

Problems solved by technology

However, the existing cigarette packaging transparent paper sealing degree test technology can only detect the sealing degree of the soft pack cigarette packaging transparent paper

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