長尺フィルム

Japanese Patent JP7339039

B2

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.

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Takayuki Nada
Nobuyuki Hatanaka

JP2019129646A

September 05, 2023

July 11, 2019

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Sumitomo Chemical Co., Ltd.

G02B5/30; B32B3/30; B32B27/00; C08J7/04

JP2000108228A
JP2006224607A
JP2017121777A
JP2017223962A

WO2016136901A1

Michiko Matsutani
Kenichi Morizumi
Marina Kajita

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