Multi-layer iridescent films

Details Multi-layer iridescent films Multi-layer iridescent films

B - Operations, Transporting

32

B

B32B 27/36 (2006.01) G02B 5/26 (2006.01) G02B 5/28 (2006.01)

Patent

CA 2351704

A transparent thermoplastic resinous laminate film is disclosed 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.

L'invention concerne une feuille thermoplastique stratifiée transparente, constituée d'au moins 10 couches très fines d'épaisseur sensiblement homogène, généralement parallèles. Les couches adjacentes sont en matières résineuses thermoplastique différentes, entre autres, en résine de copolyester ou de polyester à base de naphtalate, et présentent un indice de réfraction variant d'au moins environ 0,03.

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