Wakatsuki Yuki, Sugimoto Toshiyuki
Graduate School of Science and Engineering, Yamagata University, Japan.
Ind Health. 2018 Nov 21;56(6):485-491. doi: 10.2486/indhealth.2018-0047. Epub 2018 Jun 23.
The charge elimination method for moving charged objects was investigated using a passive type ionizer with an air assist to effectively eliminate the static charge generated at high speed by the roll-to-roll process. The passive ionizer has a grounded needle placed horizontally with respect to the moving charged roll and an air hole to eject an air flow to transport the ions from the grounded needle. The passive ionizer releases ions from the grounded needle electrode when the electric field at the tip of the grounded needle exceeds the corona inception condition. The experimental set up is composed of a moving charged roll, the passive ionizer and surface voltmeters for evaluating performance. The charge elimination current I, which corresponds to the amount of ions produced per second was measured for various movement speeds and charge potentials of the charged roll. Supply of the air flow beneath the needle electrode increased I because the ions were effectively transported to a place where the charge elimination of the roll did not affect the corona onset condition. The difference in charge elimination performance between the proposed ionizer and a commercial active ionizer was clarified in terms of I and the charge elimination rate.
使用带有空气辅助的被动式离子发生器研究了移动带电物体的电荷消除方法，以有效消除卷对卷工艺高速产生的静电荷。被动式离子发生器有一根相对于移动的带电卷筒水平放置的接地针和一个气孔，用于喷出气流以传输来自接地针的离子。当接地针尖端的电场超过电晕起始条件时，被动式离子发生器从接地针电极释放离子。实验装置由一个移动的带电卷筒、被动式离子发生器和用于评估性能的表面电压表组成。针对带电卷筒的各种移动速度和电荷电位，测量了对应于每秒产生离子量的电荷消除电流I。针电极下方气流的供应增加了I，因为离子被有效地传输到卷筒电荷消除不影响电晕起始条件的地方。根据I和电荷消除率，阐明了所提出的离子发生器与商用有源离子发生器之间电荷消除性能的差异。
