Sun Mi

Effects of cut strip casing and strip casing on sensory quality of cigarettes of Category I, II and III

为了选取适用于不同档次卷烟的加料工艺，评价与比较了片烟加料和叶丝加料工艺制成的一、二、三类卷烟产品及叶组配方感官质量风格及差异，结果表明：①相比传统片烟加料工艺，叶丝加料工艺能够明显提升或改善二、三类卷烟叶组配方、产品风格特征和品质特征，对一类卷烟影响较小。②叶丝加料工艺对二、三类卷烟叶组配方、产品感官质量风格影响与片烟加料工艺存在差异。对于叶组配方，叶丝加料工艺对三类卷烟风格、品质特征提升或改善效果更为明显；对于卷烟产品，叶丝加料工艺对二类卷烟香气风格提升效果更为明显，对三类卷烟舒适感和烟气特征改善效果更为明显。③为了强化卷烟产品感官质量风格，二、三类卷烟宜采用叶丝加料工艺，一类卷烟可采用片烟加料或叶丝加料工艺。

Effects of Technical Parameters of Pneumatic Drying at Low Velocity on Cut Stem Processing Quality

The effects of technical parameters of pneumatic drying equipment at low velocity on the quality of dried cut stem were investigated with single factor experiment and orthogonal experiment. The results showed that: 1) Within the test range, the proportion of long strands in cut stem decreased with the increase of moisture content in input cut stem; the proportion of short strands in and filling value of cut stem increased with the raise of expansion steam flow; the filling value of cut stem increased first and then decreased with the increase of opening of the exhaust valve; while the effect of frequency of hot air fan motor on the quality of cut stem was slight. 2) The appropriate parameters were: initial moisture content in cut stem 36%, expansion steam flow700 kg/h, the frequency of hot air fan motor 33 Hz, the opening of the exhaust valve 40%. After optimization,the proportion of long strands in cut stem increased by 0.3 percentage points, that of short strands decreased by 0.1 percentage point, the filling value raised by 0.31 cm3/g, and the quality of cut stem was improved.