目的 解决CO2激光加工微孔膜实际生产中难以快速、精确地确定不同孔径微孔加工参数的问题，指导微孔膜包装材料的工程应用。方法 在激光功率为6~30 W、打孔时间为0.4~4 ms的条件下，加工厚度为0.04, 0.06, 0.07 mm的PP包装薄膜和厚度为0.035, 0.05, 0.07 mm的PE包装薄膜，测量微孔孔径、孔长，分析处理试验数据。结果 在厚度为0.035~0.07 mm的PP/PE薄膜上加工出了直径为50~400 μm微孔，在厚度为0.06 mm的PP薄膜上加工出了直径为53~257 μm、孔长为100~161 μm的微孔。结论 激光加工微孔膜，孔径随激光功率、打孔时间的增加而增大，调节激光功率和打孔时间均可获得不同孔径微孔；加工PE薄膜所需的激光能量显著大于PP薄膜；薄膜厚度越大，打孔所需的激光能量越高；微孔孔长相对于薄膜厚度有所增加，且微孔孔径越大，孔长增量越大。

The work aims to solve the problem that the parameters for processing the micro-pores of different sizes cannot be quickly and accurately determined in the actual production of processing microporous films by CO2 laser and to guide the application of microporous film packaging materials in the engineering. When the laser was 6~30 W and the drilling time was 0.4~4 ms, PP packaging films that were 0.04, 0.06 and 0.07 mm thick and PE packaging films that were 0.035, 0.05 and 0.07 mm thick were processed. The diameter and length of the micro-pores were measured and the test data were analyzed. The micro-pores with diameter of 50~400 μm on the PP/PE films whose thicknesses were 0.035~0.07 mm and the micro-pores with diameter of 53~257 μm and pore length of 100~161 μm on the PP films that were 0.06 mm thick were processed. As for the microporous films processed by laser, the pore diameter is increased with the increase in the drilling time. Micro-pores of different diameters can be obtained by adjusting laser power and drilling time. The laser energy required to process PE films is significantly greater than that required by PP films. The thicker the film, the higher the laser energy required by drilling. The length of micro-pore is increased relative to the film thickness. Moreover, the larger the micro-pore diameter is, the longer the pore is.