聚合物挤出热压印成型工艺

The Extrusion Hot Embossing Process for the Polymer

介绍一种新的连续热压印工艺,此工艺中热压印机与聚合物片材挤出机串联使用,聚合物片材经挤出机挤出以后先要对其进行压平和调厚,以保证待压印片材的厚度及其均匀性,然后再进行热压印步骤。分析了热压印中影响压印制品质量的关键因素以指导热压印机的设计。应用此工艺结合所设计的压印机成功制备出了聚合物微透镜扩散板,并对制备出的扩散板的光学性能进行了模拟和测试。此工艺流程具有设备简单、图形复制精度高、效率高、成本低等优点,非常适合大面积微结构的制备。

A new continuous hot embossing process was introduced. In this process,the hot embossing equipment and the extruder were used in series. First the thickness of the polymer film was planished and adjusted after it was extruded from the extruder to ensure the thickness and uniformity of the film that was to be embossed. Then the key factors that affect Ihe embossing quality to guide the design of the embossing equipment was analysised. By using this process and with the help of the embossing equipment,the polymer diffuser with mierolens matrix was prepared. Besides the optical properties of the diffuers that we fabricated was simulated and tested. This process had the advantage of simple equipment, high precision of graphic replication,high efficiency and low cost and so on,and very suitable for the production of the microstructure of large area.