细支卷烟用R型截面二醋酸纤维素丝束的应用性能

为进一步拓宽细支卷烟（φ=5.4mm）滤棒设计思路，设计开发细支滤棒用规格为8.6R13 000的R型截面二醋酸纤维素丝束，绘制其成型特性曲线，评价其成型能力。将8.6R13 000规格二醋酸纤维素丝束成型为不同压降细支滤棒，并以Y型截面醋纤丝束（6.0Y17 000、8.0Y15 000）为对照，卷接为细支卷烟，考察不同截面丝束、不同压降细支滤棒的烟碱过滤效率。结果表明:（1）与Y型截面二醋酸纤维素丝束相比，R型截面二醋酸纤维素丝束成型特性曲线存在显著差异，8.6R13 000规格二醋酸纤维素丝束覆盖压降范围从1 447Pa到6 428Pa，覆盖范围明显增大，且适用于更低压降细支滤棒；（2）R型截面二醋酸纤维素丝束滤嘴对烟气烟碱过滤效率为13.8%到17.6%，随着滤棒压降升高，烟碱过滤效率升高，且与Y型截面二醋酸纤维素丝束相比，R型丝束的过滤效率明显偏低。本文设计开发了细支卷烟用R型截面二醋酸纤维素丝束，并对其应用性能进行了评价，为不同风格细支卷烟开发提供了参考。 

Application performance of cellulose acetate tow of R type filaments for super slim cigarettes

In order to improve super slim cigarette (φ=5.4mm) filter design, cellulose acetate tow of R type filament (RCA) for super slim filter rod (specification: 8.6R13 000) was tested in terms of filter rod making and tow characterization curve.Filter rods with different pressure drop were made and filter cigarettes prepared.Nicotine removal efficiency of the filters with different section and different pressure were investigated and compared with that of Y type filaments cellulose acetate (YCA) filter (6.0Y17 000, 8.0Y15 000).Results showed that: (1) Differences were found between the characterization curves of RCA and YCA.The pressure drop of RCA ranged from 1 447Pa to 6 428Pa, which is more suitable for forming super slim filter rod with lower pressure drop.(2) The nicotine removal efficiency of RCA filter ranged from 13.8% to17.6%.The nicotine removal efficiency of filter increased with the pressure drop of filter rod.Compared with YCA, the smoke removal efficiency of RCA was significantly lower.This study designed RCA for super slim filter and evaluated its application performance.