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Thin-Film Processing of Polypropylene and Polystyrene Sheets by a Continuous Wave CO2 Laser with the Cu Cooling Base

机译：通过连续波CO2激光用Cu冷却底的聚丙烯和聚苯乙烯片的薄膜处理

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摘要

Carbon dioxide (CO2) laser is widely used in commercial and industrial fields to process various materials including polymers, most of which have high absorptivity in infrared spectrum. Thin-film processing by the continuous wave (CW) laser is difficult since polymers are deformed and damaged by the residual heat. We developed the new method to make polypropylene (PP) and polystyrene (PS) sheets thin. The sheets are pressed to a Cu base by extracting air between the sheets and the base during laser processing. It realizes to cut the sheets to around 50 µm thick with less heat effects on the backside which are inevitable for thermal processing using the CW laser. It is considered that the boundary between the sheets and the base is in thermal equilibrium and the base prevents the sheets from deforming to support the backside. The method is applicable to practical use since it does not need any complex controls and is easy to install to an existing equipment with a minor change of the stage.
机译：二氧化碳（CO2）激光广泛用于商业和工业领域，以处理包括聚合物的各种材料，其中大多数在红外光谱中具有高吸收率。通过连续波（CW）激光薄膜处理难以困难，因为聚合物被残留热量变形和损坏。我们开发了制备聚丙烯（PP）和聚苯乙烯（PS）片材的新方法。通过在激光加工期间通过提取片材和基座之间的空气向Cu碱基被压入Cu基。它实现了将纸张切割到大约50μm厚的情况下，在背面的热量效果较少，这是使用CW激光的热处理的不可避免的。认为片材和基座之间的边界是热平衡，并且底座防止片材变形以支撑背面。该方法适用于实际使用，因为它不需要任何复杂的控制，并且易于安装到现有设备，具有较小的阶段变化。

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