A method for non-destructive detection of segmental draw resistance of cigarette sticks

Abstract

A method for non-destructive detection of segmental draw resistance of cigarettes, characterized in that: the method is obtained by forming a plurality of states among the measured parameters through a linear network model, which includes the total pressure of three states Measurement of the gas flow rate of the drop and filter vents and the position of the cigarette filter vents. The advantage of the present invention is that: on the premise that the relationship between the cigarette paper and the shredded tobacco segment's draw resistance cannot be determined, the influence of the cigarette paper is eliminated in the calculation process. On the basis of the measurement method of cigarette draw resistance, the measurement of the draw resistance of each part of the cigarette stick is realized, which reduces the calculation error caused by the uncertain relationship between the cigarette paper and the shredded tobacco section, and at the same time reduces the wrapping treatment of the cigarette stick ( Reduced from three times to two times), the detection method and measurement data are more scientific, reasonable, accurate and more practical. To meet the actual engineering needs of providing basic support for cigarette product quality traceability, product design and process optimization.

Description

technical field [0001] The invention relates to the technical field of cigarette quality detection, in particular to a method for rapidly and nondestructively detecting segmental draw resistance of cigarettes. Background technique [0002] Cigarette draw resistance is an important indicator for evaluating the physical quality of cigarettes. If the draw resistance of cigarettes is too high, the cigarettes will become difficult to smoke, while if it is too small, the smoke will be excessively diluted, which will affect the sensory quality of cigarette products. The measurement of the draw resistance of cigarettes usually adopts GB / T 22838.5-2009 "Determination of Physical Properties of Cigarettes and Filter Rods_Part 5: Cigarette Draw Resistance and Pressure Drop of Filter Rods", which can realize the fully automatic operation of cigarette draw resistance measurement With control, the above method realizes the measurement of cigarette open draw resistance and closed draw resis...

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Problems solved by technology

[0005] The Chinese patent (publication number: CN108918382A) obtains the draw resistance of each segment of the cigarette through the flow conservation relationship formed by the "quasi-series" method of the cigarette in multiple states (also the applicant's previous application for this case), but in realizing During the process, due to the way of closing the end face of the cigarette, it is easy to cause the change of the air flow inside the cigarette, which will affect the calculation results of the draw resistance of each segment of the cigarette, resulting in a large error

[0006] The Chinese patent (publication number: CN109527646A) also obtains the draw resistance of each segment of the cigarette through the flow conservation relationship formed by the "quasi-series" mode of the cigarette in multiple states (also the applicant's previous application in this case), compared with the aforementioned The method reduces the test status of cigarettes (from six to four), and does not seal the end faces of cigarettes, which has little influence on the airflow inside the cigarettes. The flow data of the paper is used to calculate the air flow of the shredded tobacco section. Due to the incomplete parallel relationship between the shredded tobacco section and the cigarette paper, the calculation of the air flow of the shredded tobacco section is inaccurate, which leads to a large error in the calculation of the draw resistance of the shredded tobacco section.

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