502”胶对非渗透性客体表面汗液手印显现技术在刑侦系统得到了广泛的应用[1]。但“502”胶熏显过程中控制不好温、湿度,通常会造成显现过厚,导致“502”胶单体聚集过多,相邻的乳突线之间没有明显界限,使得熏显出手印的清晰度受到影响[2]。为了补救,通常需要进行减薄处理。目前 502 “gel on the surface of non-permeable guest sweat fingerprinting technology has been widely used in criminal investigation system [1] .However,” 502 “gum smoked significant process of control is not good temperature and humidity, usually caused by the appearance of too thick, resulting in” 502 "glue monomer gathered too much, there is no clear line between the adjacent mastoid lines, making smoked the clarity of fingerprints affected affected. [2] In order to remedy, usually need to thinning treatment.