Development of laser technology has allowed industrial application of CO_2 lasers on non-contact processes as well the possibility of high-speed operation. The 10.6 μm radiation emitted by CO_2 lasers has proven to have a high efficiency for plastic processing. However, the decrease of radiation absorption as the thickness reduces makes difficult to obtain high cutting speeds with low laser power. In order to achieve high-speed cuts, a high power CO_2 laser was used. Plastic samples tested were Polypropylene (PP) and high density (HD) and low density (LD) polyethylene (PE). Tests show that it is possible to cut (without welding) the superposed HD PE and LD PE films with velocities up to 25 m/s. Differences on cutting parameters were found between them. It was also shown the existence of a band of energy density required to cut each kind of plastic, constant for each set of experimental conditions.
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机译：激光技术的发展已使CO_2激光器可以在非接触过程中进行工业应用，并且可以实现高速运行。事实证明，CO_2激光器发出的10.6μm辐射对塑料加工具有很高的效率。然而，随着厚度减小，辐射吸收的减小使得难以以低激光功率获得高切割速度。为了实现高速切割，使用了高功率的CO_2激光器。测试的塑料样品为聚丙烯（PP）和高密度（HD）和低密度（LD）聚乙烯（PE）。测试表明，可以以高达25 m / s的速度切割（不焊接）重叠的HD PE和LD PE膜。发现它们之间在切削参数上存在差异。还显示出存在切割每种塑料所需的能量密度带，该能量密度带对于每组实验条件都是恒定的。
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