公开(公告)号：US20140027934A1

公开(公告)日：2014-01-30

申请号：US14041486

申请日：2013-09-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. HEBRINK ,  Carl A. STOVER ,  Martin E. DENKER ,  Jeffery N. JACKSON ,  Kristopher J. DERKS ,  Michael F. WEBER ,  Anna A. WETZELS ,  Joan M. STROBEL ,  Barry S. ROSELL ,  John P. PURCELL ,  Kevin M. HAMER ,  Robert D. TAYLOR ,  William B. BLACK ,  Richard J. THOMPSON ,  Gregory L. BLUEM

IPC: B29D11/00

CPC classification number: B29D11/00788 ,  B32B3/26 ,  B32B7/06 ,  G02B1/12 ,  G02B5/0221 ,  G02B5/0257 ,  G02B5/0268 ,  G02B5/0278 ,  G02B5/305 ,  G02B27/283 ,  Y10T428/24355 ,  Y10T428/24372 ,  Y10T428/25 ,  Y10T428/254

Abstract: 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.

Abstract translation: 公开了包括光学膜和至少一个粗糙可剥离表皮层的光学体。 至少一个粗糙的可剥离表皮层可以包括连续相和分散相。 在一些实施方案中，至少一个粗糙的可剥离表皮层可以包括第一聚合物，不同于第一聚合物的第二聚合物和在第一和第二聚合物中的至少一种中基本上不混溶的附加材料。 在一些示例性实施例中，与光学膜相邻的至少一个粗糙可剥离表皮层的表面包括多个突起，并且光学膜的相邻表面包括基本对应于所述多个突起的多个不对称凹部。 还公开了制造这种示例性光学体的方法。

公开(公告)号：US20210333455A1

公开(公告)日：2021-10-28

申请号：US17274309

申请日：2019-09-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ryan T. FABICK ,  Matthew E. SOUSA ,  William B. BLACK ,  Edward J. KIVEL

IPC: G02B5/28

Abstract: An optical film including a plurality of alternating first and second layers disposed on a skin layer is described. The skin layer has an average thickness greater than about 2 microns. A transmittance of the film for substantially normally incident light includes a band edge separating first and second wavelength ranges, where each range is at least 250 nm wide. A reflectance of the film is greater than about 95% for each wavelength in the first wavelength range; an average transmittance of the film is greater than about 80% in the second wavelength range; and a difference between maximum and minimum values of the optical transmittance of the film in the second wavelength range is less than about 30%. The band edge may have a slope that is greater than about 2%/nm. The transmittance may increase monotonically at least from about 10% to about 70% with increasing wavelength.