Invention Grant
- Patent Title: Shaped optical films and methods of shaping optical films
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Application No.: US16754825Application Date: 2018-10-23
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Publication No.: US11358355B2Publication Date: 2022-06-14
- Inventor: Robert M. Jennings , William T. Fay , Jo A. Etter , Arthur L. Kotz , David J. W. Aastuen
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Clifton F. Richardson
- International Application: PCT/IB2018/058253 WO 20181023
- International Announcement: WO2019/082079 WO 20190502
- Main IPC: B29D11/00
- IPC: B29D11/00 ; B29C51/42

Abstract:
Optical films having a curved shaped and methods of shaping optical films are described. A method of shaping an optical film includes the steps of disposing the optical film adjacent first and second rollers spaced apart along a first direction, securing opposing first and second ends of the optical film, providing a curved mold surface, and shaping the optical film by contacting the optical film with the curved mold surface while stretching the optical film along the first direction and keeping a threshold distance between closest points on the optical film contacting the first roller and contacting the curved mold surface less than the width of the optical film to reduce buckling of the optical film.
Public/Granted literature
- US20210187885A1 SHAPED OPTICAL FILMS AND METHODS OF SHAPING OPTICAL FILMS Public/Granted day:2021-06-24
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