3m Innovative Properties Company

Barry S Rosell

Michael F Weber

Carl A Stover

Timothy J Hebrink

Kristopher J Derks

Robert D Taylor

Jeffery N Jackson

Kevin M Hamer

Martin E Denker

Joan M Strobel

William B Black

Richard J Thompson

Gregory L Bluem

John P Purcell

Anna A Kobilansky

Anna A Wetzels

Karl A Stover

Optical bodies are disclosed that include a first optical film, a second optical film and at least one rough strippable boundary layer disposed between the first and second optical films. Also disclosed are optical bodies including a strippable boundary layer disposed between the first and second optical films and including a first polymer and a second polymer that is substantially immiscible in the first polymer. The present disclosure also provides methods of processing optical bodies that include stretching the optical bodies.

Optical bodies including rough strippable boundary layers

Optical bodies are disclosed that include an optical film and at least one rough strippable skin layer. The at least one rough strippable skin layer can include a continuous phase and a disperse phase. In some embodiments, the at least one rough strippable skin layer can include a first polymer, a second polymer different from the first polymer and an additional material that is substantially immiscible in at least one of the first and second polymers. In some exemplary embodiments, a surface of the at least one rough strippable skin layer adjacent to the optical film comprises a plurality of protrusions and the adjacent surface of the optical film comprises a plurality of asymmetric depressions substantially corresponding to said plurality of protrusions. Methods of making such exemplary optical bodies are also disclosed.

Optical bodies including rough strippable boundary layers and asymmetric surface structures

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Lake Elmo, MN, United States of America

Barry S Rosell