Title:
MULTILAYER OPTICAL FILM WITH MELT ZONE TO CONTROL DELAMINATION
Document Type and Number:
WIPO Patent Application WO2003100476
Kind Code:
A3
Abstract:
Polymeric multilayer optical films, and laminate bodies that include such films, are provided with a melt zone that extends between a first and second portion of the multilayer optical film. If a shearing operation or other external influence acts on the film in the first portion that causes delamination of individual layers of the multilayer optical film, the melt zone is effective to prevent the delamination from propagating from the first portion to the second portion. The melt zone is characterized at least in part by a deformation of individual layers of the multilayer optical film. The melt zone can be positioned to extend along and proximate to some or all of a periphery of the multilayer optical film.
Inventors:
TAIT BRUCE E
DOBRZYNSKI STEVEN J
MORTENSON DAVID K
WHEATLEY JOHN A
DOBRZYNSKI STEVEN J
MORTENSON DAVID K
WHEATLEY JOHN A
Application Number:
PCT/US2003/009378
Publication Date:
April 01, 2004
Filing Date:
March 26, 2003
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
G02B5/30; B29C63/00; B29D11/00; B32B3/02; B32B7/02; B32B27/06; B32B43/00; G02B1/10; G02B5/26; G02B5/28; B32B38/00; (IPC1-7): G02B5/00; B32B27/00; B32B27/16; G02B5/28
Foreign References:
| EP0472244A1 | 1992-02-26 | |||
| US3792519A | 1974-02-19 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 017, no. 694 (M - 1531) 17 December 1993 (1993-12-17)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
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