为了提高细支卷烟物理指标的稳定性,采用带约束条件的混料均匀设计法进行优化试验,并进行了试验数据的回归分析及回归方程的优化计算.结果表明:在切丝宽度为0.85 mm的条件下,当吸阻标准偏差最小时,烟丝4种尺寸的最优配比为X=(0.0167,0.2172,0.3038,0.2714),此时吸阻标准偏差最小值为37.3118 Pa;除硬度、总通风率标准偏差和端部落丝量外,其他主要物理指标达到最小值时,长度大于6.70 mm的烟丝比例均小于0.08;除质量、硬度标准偏差外,其他主要物理指标达到最小值时,长度小于2.50 mm的烟丝比例均小于0.3;当主要物理指标达到最小值时,长度为>4.32~6.70、2.50~4.32 mm的烟丝比例之和为0.5~0.8,烟丝尺寸比例得到优化.%To improve the stability of cigarette physical qualities,the mixture uniform design with constrain conditions was used to optimize mixture ratio of cut tobacco size. The regression analysis of the test data and the optimization calcu-lation of the regression equation were carried out. The results show that under the condition of cut tobacco width which is 0.85 mm,when the resistance standard deviation of draw resistance reaches the minimum,the best ratio of cut tobacco si-zes is X=(0.016 7,0.217 2,0.303 8,0.271 4),and the standard deviation of draw resistance is 37.311 8 Pa. Except the standard deviation of hardness,the total ventilation rate and the loss of tobacco from the end,when the other physical qualities reach the minimum,the ratio of cut tobacco size longer than 6.70 mm is less than 0.08. Except the standard de-viation of mass and hardness,when the other main physical qualities reach the minimum,the ratio of cut tobacco size shorter than 2.50 mm is less than 0.3. When the main physical qualities reach the minimum,the ratio sums of >4.32—6.70 and 2.50—4.32 mm are within the range of 0.5—0.8,the ratio of cut tobacco optimized size is obtained.
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