辊涂型卷烟接嘴胶动态流变性能对其上机适用性的影响

Influences of dynamic rheological properties of tipping glue on its adaptability

为了解决烟用水基胶上机运行时常出现烟支质量及运行质量不佳的问题,采用非牛顿流体的Ostwald-de Wale幂律方程模型,对HAUNI Protos 2-2适用辊涂型接嘴胶的动态流变检测数据进行拟合,计算出非牛顿指数n值,考察不同接嘴胶的动态流变性能。研究了辊涂型接嘴胶动态流变性能对烟支卷接质量、生产运行质量的影响。试验结果表明:(1)辊涂型接嘴胶的动态流变性能对涂胶量以及渗透行为产生影响,非牛顿指数n值过大及过小均影响接嘴胶的实际上机使用效果。(2)非牛顿指数n值越大,涂胶量越大,干燥速度越慢,易出现接装纸皱纹;反之,干燥速度越快,易出现空隙性接装纸泡皱及掉头。(3)非牛顿指数n值越大,接嘴胶实际黏度越高,切刀、吸纸轮、搓接鼓轮、搓板等部位粘附的胶垢越多,被动停机保养次数增加,生产效率受到影响。对于本实验中所用的Protos 2-2型超高速卷烟机设备状态和所用的接装纸而言,其适配的接嘴胶非牛顿指数在0.825~0.866区间时可获得较为理想的上机适用性。

In order to promote cigarette quality and machine efficiency, the dynamic rheological data of tipping glue adaptable to HAUNI Protos 2-2 were fitted with Ostwald-de Wale power-law formula, and non-Newton index n of the same was calculated to investigate the dynamic rheological properties of different tipping glues. The influences of dynamic rheological properties of tipping glue on the quality of filter assembling and machine running status were studied, and the results showed that： 1） The dynamic theological properties affected the application amount and permeation behavior of glue, too large or too small n had a negative influence on its operational adaptability. 2） Bigger n associated with more glue application and led to slow drying, wrinkled tipping might occur. On the contrary bubble-like wrinkle tipping or filter missing might occur due to rapid drying. 3） When bigger n and higher viscosity glue was used, glue would build up on cutter, paper-cutting drum, rolling drum and rolling plate more rapidly, which increased the frequencies of machine shutdown. For the status of Protos 2-2 cigarette maker and the tipping paper used in this experiment, the appropriate range for non-Newton index n of tipping glue was from 0.825 to 0.866.