In AF2/KDF2 filter rod maker, triacetin is applied to tow by means of the centrifugal force generated by an applicator roller rotating at a high speed. Poor atomization may result in fused holes in filter rod, and uneven application may result in hardness fluctuation of filter rods. The hardware and control unit were improved by taking the atomizing and spraying system in KDF3 and KDF4 filter rod makers as a reference. Triacetin was well atomized and evenly sprayed on tow through nozzles at constant pressure. The test results showed that the process capability index for filter rod hardness raised from 0.6 to 1.13, the rate of defective filter rod decreased from 0.54% to 0.35% and the average consumption of triacetin reduced from 0.0949 to 0.0933 kg per thousand filter rods. The consistence of filter rod quality was improved.%AF2/KDF2滤棒成型机三醋酸甘油酯雾化施加装置依靠轮辊高速旋转产生的离心力将三醋酸甘油酯甩抛成雾状后施加在丝束上,雾化颗粒和喷洒量不均匀,从而造成滤棒硬度不稳定、容易产生溶孔等问题.为此在研究借鉴KDF3,KDF4滤棒成型机雾化施加系统的基础上,对硬件和控制部分进行了改造,通过恒压作用,经喷嘴喷洒出雾化良好的三醋酸甘油酯,均匀地施加在丝束上.测试对比结果,滤棒硬度的过程能力系数由0.6提高到1.13,废棒率由0.54％降低到0.35％,三醋酸甘油酯的平均消耗由0.949 kg/万支降低到0.933 kg/万支,提高了滤棒质量稳定性,降低了原辅料消耗.
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