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Colored iridescent film

  • US 5,451,449 A
  • Filed: 05/11/1994
  • Issued: 09/19/1995
  • Est. Priority Date: 05/11/1994
  • Status: Expired due to Term
First Claim
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1. A transparent thermoplastic resinous laminate film of at least 10 very thin layers of substantially uniform thickness of about 30 to 500 nm, said layers being generally parallel and one surface of each of two of said layers constituting the outermost surfaces of the laminate film, the contiguous adjacent layers being of different transparent thermoplastic resinous materials, the contiguous adjacent layers differing in refractive index by at least about 0.03, and the film containing a sufficient quantity of a stable transparent dye which is soluble in the thermoplastic resinous material of the layers in which it is located to enhance or modify the apparent color of at least one of the reflection and/or transmission colors of the film.

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