用308nm准分子激光对几种卷烟用纸打标的研究

激光打标由于具有快速、精度高及非接触等优点，是激光在工业领域的又一应用。准分子激光是一种大功率高重复率的紫外激光器，与ＣＯ２、ＹＡＧ等红外激光相比，一般具有打标效率高、热效应小、图案更精密等优点。近年来国内外均对准分子激光打标进行了一些研究，主要集中在对金属、高分子聚合物及陶瓷等硬脆材料的打标的研究。本文研究了用３０８ｎｍ准分子激光对几种卷烟用纸打标。用适当能量密度的３０８ｎｍ准分子激光对印有数种颜色的烟盒纸、过滤嘴纸打标，获得了清晰可见的图案标记。分析了该打标过程的作用机理，通过实验得出了对几种不同的卷烟用纸打标的能量密度阈值条件及优化条件。

308nm excimer laser marking of several kind of paper used in cigarette

Now laser marking has become one of the most important application of laser because it is high speed, precise and non contact marking. Excimer laser is a kind of power and high repetition rate ultraviolet laser, the marking with excimer laser is high in efficiency, less in heat effect and preciser than the infrared laser, for example, CO 2 or YAG laser. In the past few years excimer laser marking has been studied at home and abroad, the materials of marking is mainly hard or brittleness, i.e,metals,polymers and ceramics et.al.Excimer laser marking of several kinds of paper used in cigarette is studied in this paper. A fine and visible marking pattern can be acquired in cigarette wrapper printed different color or filter tip paper when 308nm excimer laser irradited it if the fluence of laser is over the marking threshold. The marking mechanism is studied, the fluence threshold of marking is acquired in experiment, the conditions of marking is optimized.