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Replication of Grating-Based Optically Variable Devices in Polypropylene

Published online by Cambridge University Press:  01 February 2011

Patrick W. Leech
Patrick W. Leech*
Affiliation:
[email protected], CSIRO, CMMT, Gate 4, Normanby Rd, Clayton, 3169, Australia, +61395452791
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Abstract

The hot embossing of grating-based optically variable devices has been demonstrated in biaxially-oriented polypropylene (BOPP). The embossing of several types of optically variable device has been examined including portrait, non-portrait and 3 dimensional images. The images embossed into BOPP have displayed a novel optically variable effect when viewed in transmitted light. Embossing of the grating structures was examined over a range of temperatures (80-155 °C) at 135 kN force. High quality replication was achieved over a full embossing area of 80 x 80 mm at temperatures > 120 °C.

Keywords

nanostructurepolymerhot pressing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 961: Symposium O – Nanostructured and Patterned Materials for Information Storage , 2006 , 0961-O06-06
Copyright
Copyright © Materials Research Society 2007

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References

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