Title:
LONG FILM
Document Type and Number:
WIPO Patent Application WO/2021/006068
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a long film which has a base material film and a functional layer comprising a transferable cured liquid crystal layer, and which is not susceptible to separation of the functional layer at an end part in the short-side direction when the base material film is removed, while being capable of producing an optical film having excellent optical characteristics with high productivity. The present invention provides a long film which comprises: a long base material film that has a recessed and projected part on at least one end in the short-side direction of at least one surface; and a transferable functional layer that comprises a layer of a cured product of a polymerizable liquid crystal composition containing at least one polymerizable liquid crystal compound. With respect to this long film, the functional layer is superposed on the surface having the recessed and projected part of the base material film; and if A is the full width of the base material film in the short-side direction, B is the total width of the recessed and projected part of the base material film in the short-side direction, and C is the width of the functional layer in the short-side direction, (B + C) > A is satisfied.
Inventors:
NADA TAKAYUKI (JP)
HATANAKA NOBUYUKI (JP)
HATANAKA NOBUYUKI (JP)
Application Number:
PCT/JP2020/025189
Publication Date:
January 14, 2021
Filing Date:
June 26, 2020
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B3/30; B32B27/00
Domestic Patent References:
| WO2016136901A1 | 2016-09-01 |
Foreign References:
| JP2000108228A | 2000-04-18 | |||
| JP2006224607A | 2006-08-31 | |||
| JP2017121777A | 2017-07-13 | |||
| JP2017223962A | 2017-12-21 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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