Patent ID: 9709700
Date: 2017-07-18
CPC Classifications: B32B,G02B,Y10T

Claim:
1. An optical body, comprising: a first optical film; a second optical film; and at least one rough strippable boundary layer disposed between the first and second optical films, wherein each of the first and second optical films comprises at least one of a multilayer reflective polarizer optical film and a multilayer mirror film, wherein the rough strippable boundary layer comprises a continuous phase and a disperse phase, wherein the rough strippable boundary layer comprises a homopolymer of polypropylene; wherein a first major surface of the rough strippable boundary layer is adjacent to a first major surface of the first optical film along a first interface and an opposed second major surface of the rough strippable boundary layer is adjacent to a first major surface of the second optical film, and wherein the ratio of the continuous phase and the disperse phase in the rough strippable boundary layer defines a degree of surface roughness and adhesion of the rough strippable boundary layer to the first major surface of the first optical film along the first interface, wherein the degree of surface roughness and the adhesion of the rough strippable boundary layer to the first major surface of the first optical film along the first interface defined by the rough strippable is such that the rough strippable boundary layer is removable, via application of a peel force, from the first optical film along all of the first interface to expose the first major surface of the first optical film and to provide the first optical film separate from the rough strippable boundary layer.