Multi-layer iridescent films
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United States of America Patent
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-
Nov 5, 2002
Grant Date -
Jul 26, 2001
app pub date -
Nov 16, 1998
filing date -
Nov 16, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A transparent iridescent thermoplastic resinous laminate film having at least 10 very thin layers of substantially uniform thickness, said layers being generally parallel, the contiguous adjacent layers being of different transparent thermoplastic resinous materials of which one is a naphthalate-based polyester or copolyester resin, the contiguous adjacent layers differing in refractive index by at least about 0.03.
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