Study on Ash Gray and Ash Condensation Index Evaluation during Combustion of Medium Cigarettes

The color of cigarette paper directly affect the ash color and ash condensation quality of cigarettes. The ash color and ash condensation quality of cigarettes with black cigarette paper are studied by using the self-developed cigarette paper gray and ash condensation quality measuring equipment and taking black as the background color in this paper. The effect of black cigarette paper on the ash gray is discussed in the combustion process of black cigarette paper for the first time. The results show that the average grey value of black cigarette paper is 116.59, and the uneven grey value is mainly due to the non-uniformity of cigarette paper among different batches and the cut tobacco structure of medium cigarettes, on which the shooting from 3 different angles has a great impact. It is appropriate to calculate the grey and ash quality by taking the average value of 3-side shooting. Black background board is ideal for testing cigarette paper gray. The gray value difference of randomly selected cigarettes is too large, so it is necessary to measure in batches, and the measurement accuracy of gray value can be guaranteed only if the sample quantity is sufficient. The maximum deviation of gray value photographed by different cameras of the same cigarette is 18.17, which is 15.6% of the average value, and the average value of ash coagulation index is 90.20. The cigarette paper ash detection equipment used in this paper is accurate, which can reflect the cigarette ash performance comprehensively and objectively, and such an equipment has rich detective means, and has high automation and reliability in the analysis of detection results. It is necessary to take photos from different angles in the measurement process to ensure the accuracy of gray measurement value of a cigarette to the largest extent, as the samples showed significant differences.