A two-station embossing process for rapid fabrication of surface microstructures on thermoplastic polymers.

From: Polymer Engineering and Science | Date: April 1, 2007| Author: | Copyright information

An embossing strategy involving a hot station and a cold station for sequentially heating and cooling the embossing tool was investigated to reduce cycle times in hot embossing polymer microstructures. Experimental studies showed that aluminum stamps with a thickness of 1.4 mm can be rapidly heated from room temperature to 200[degrees]C in 3 s using contact heating against a hot station at 250[degrees]C. Microchannels and microlenses were successfully embossed onto high-density polyethylene and acrylonitrile-butadiene-styrene substrates using a heating time less than 3 s and a total cycle ...

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