烟丝形态特性与细支卷烟填充密度均匀性关系研究
Study on the relationships between morphological characteristics of cut tobacco and the uniformity of the filling density of slim cigarettes
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摘要: 为研究烟丝形态特性与细支卷烟填充密度均匀性的关系,测定烟丝的结构分布(长丝率、中丝率、短丝率等)、形态参数(长度、宽度、卷曲度)等指标,并根据前述数值对烟丝总体形态进行表征,采用逐步回归分析法建立烟丝形态特性与烟支填充密度均匀性系数之间的定量关系模型,通过求取模型最优解以寻求烟丝结构的最佳调控方向,并进行生产验证。结果表明:再造梗丝宽度设定为0.8～1.0 mm时,与实际生产符合性较好,且中丝率、短丝率的提高有利于提升再造梗丝的宽度符合性;烟丝的总体长度、总体宽度、总体卷曲度、中丝率、短丝率与细支卷烟填充密度均匀性系数的回归方程系数达到极显著水平(P<0.01),再造梗丝掺配比例为2%～8%时,模型的线性度较好;依据模型最优解对烟丝结构进行生产调控,烟丝总体长度降低了5.9%,总体卷曲度降低了4.4%,中短丝率上升了57.9%,烟支填充密度均匀性提高了45.5%。Abstract: In order to study the relationship between the morphological characteristics of cut tobacco and the filling density uniformity of slim cigarettes, the structural distribution (long-filament ratio, medium-filament ratio, short-filament ratio, etc.) and morphological parameters (length, width, curl) of cut tobacco were measured. The overall morphology of cut tobacco was characterized based on the above-mentioned values. A quantitative relationship model between the morphological characteristics of cut tobacco and the filling density uniformity coefficient of cigarettes was established using stepwise regression analysis. The optimal solution of the model was obtained to seek the best control direction of the cut tobacco structure, and production verification was carried out. The results showed that when the width of the reconstituted cut stems was 0.8~1.0 mm, it was in good conformity with the actual production, and the increase of the short and medium cut tobacco rate was conducive to improving the width conformity of the reconstituted cut stem. The significance of the multiple stepwise regression equation of the overall length, overall width, overall curl, medium cut rate, short cut rate and thin cigarette filling density uniformity coefficient index reached an extremely significant level (P<0.01), when the proportion of reconstituted cut stems was between 2% and 8%, the linearity of the model was better. The cut tobacco structure was adjusted in production based on the optimal solution of the model, the overall length of the cut tobacco was reduced by 5.9%, the overall curl was reduced by 4.4%, the rate of medium and short tobacco threads increased by 57.9%, and the uniformity of cigarette filling density was improved by 45.5%.
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