Holographic films employing cycloolefin copolymers
View Patent ↗A multilayer holographic film includes a first layer and an embossed layer on at least one side of the first layer and having a micro-embossed holographic image therein. The embossed layer is thinner than the first layer and has a lower embossing temperature than the first layer. The hologram-receiving layer with a micro-embossed holographic image embossed therein is adapted to receive a metal layer thereon, if desired, and the layer includes a cycloolefin copolymer as the primary polymer component.
1. A multilayer micro-embossed film including a first layer and a micro-embossed layer on at least one side of the first layer, said micro-embossed layer including a holographic image on an outer surface thereof and an additional layer on said outer surface of said micro-embossed layer, said additional layer being from the group consisting of a metal layer, a metal oxide layer and a zinc sulfide layer, said micro-embossed layer including as the primary polymer component, by weight, a cyclic olefin copolymer.
2. The film of claim 1 , wherein said additional layer is a metal layer on the micro-embossed layer.
3. The film of claim 2 , wherein the metal layer is transferable to another substrate.
4. The film of claim 2 , wherein the metal layer is permanently retained as part of the film structure and is not transferable to another substrate.
5. The film of claim 1 , wherein the cyclic olefin copolymer is substantially 100% of the polymer component of said embossed layer.
6. The film of claim 2 , wherein the cyclic olefin copolymer is substantially 100% of the polymer component of said layer.
7. The film of claim 1 , wherein said cyclic olefin copolymer is an ethylene cyclic copolymer.
8. The film of claim 2 , wherein said cyclic olefin copolymer is an ethylene cyclic copolymer.
9. The film of claim 1 , wherein said micro-embossed layer is adhered directly to said first layer.
10. The film of claim 2 , wherein said micro-embossed layer is adhered directly to said first layer.
11. The film of claim 1 , wherein said micro-embossed layer is on one side of the first layer and a heat sealable layer is on the side of the first layer opposite said one side.
12. The film of claim 1 , wherein said micro-embossed layer is on one side of the first layer and a printable layer is on the side of the first layer opposite said one side.
13. The film of claim 1 , wherein said cyclic olefin copolymer is a copolymer of ethylene and norbornene.
14. The film of claim 2 , wherein said cyclic olefin copolymer is a copolymer of ethylene and norbornene.
15. The film of claim 5 , wherein said cyclic olefin copolymer is a copolymer of ethylene and norbornene.
16. The film of claim 6 , wherein said cyclic olefin copolymer is a copolymer of ethylene and norbornene.
17. The film of claim 7 , wherein said cyclic olefin copolymer is a copolymer of ethylene and norbornene.
18. The film of claim 8 , wherein said cyclic olefin copolymer is a copolymer of ethylene and norbornene.
19. A multilayer micro-embossed film including a first layer, a micro-embossed layer on one side of the first layer and a heat sealable layer on the side of the first layer opposite said one side, said micro-embossed layer including a holographic image on an outer surface thereof, said micro-embossed layer including as the primary polymer component, by weight, a cyclic olefin copolymer.
20. A multilayer micro-embossed film including a first layer, a micro-embossed layer on one side of the first layer and a printable layer on the side of the first layer opposite said one side, said micro-embossed layer including a holographic image on an outer surface thereof, said micro-embossed layer including as the primary polymer component, by weight, a cyclic olefin copolymer.