Design, development, and experimental investigation of induction-aided hot embossing process
DOI:
https://doi.org/10.58368/MTT.22.6.2023.20-27Keywords:
Induction-Aided Hot Embossing, Polymer, PET, Performance Analysis, Replication AccuracyAbstract
Hot embossing (HE) is a microfabrication technique employed to develop micron-scaled patterned polymer substrate. This process has long cycle time which affects productivity. To overcome this, induction-assisted hot embossing (IHE) setup was developed in-house by altering the traditional–HE setup. From the results of a performance study, it is clear that the IHE arrangement has a much shorter total cycle time than the conventional-HE setup. The overall cycle time in conventional-HE setup is 27.18 minutes, while for IHE setup it is 11.38 minutes. The percentile decrement in overall cycle time is 58.13%. It is observed that embossingtemperature mainly influences the % replication-accuracy of an embossed microchannel. From a parametric study was observed that the % replication-accuracy improved from 44.01% to 97.79% as embossing-temperature rise from 90°C-110°C. The max % replication-accuracy was obtained at embossing-temperature = 110°C, embossing-pressure = 20 Kg/cm2, embossing-time = 240 seconds and deembossingtemperature = 60 °C.
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