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Title:
LAMINATE FILM
Document Type and Number:
WIPO Patent Application WO/2020/054529
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a laminate film having high transparency and wavelength sharp-cutting properties. This laminate film is a laminate including 51 or more layers in which an A layer mainly composed of a thermoplastic resin A and a B layer mainly composed of a thermoplastic resin B, which is different from the thermoplastic resin A, are alternately laminated. A transmission spectrum X is obtained by exposing the film to linear polarized light (X wave) that oscillates in the alignment direction of the film over a range of wavelengths from 300 to 900 nm, and plotting the wavelength (nm) along the horizontal axis and the transmittance (%) along the vertical axis. A transmission spectrum Y is obtained by exposing the film to linear polarized light (Y wave) that oscillates in the direction perpendicular to the alignment direction of the film over a range of wavelengths from 300 to 900 nm, and plotting the wavelength (nm) along the horizontal axis and the transmittance (%) along the vertical axis. The area Amax (nm·%) of the largest region among regions enclosed by the transmission spectrum X and the transmission spectrum Y is 150 to 1500.

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Inventors:
MATSUI HISATO (JP)
MATSUO YUJI (JP)
GOUDA WATARU (JP)
Application Number:
PCT/JP2019/034733
Publication Date:
March 19, 2020
Filing Date:
September 04, 2019
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
G02B5/26; B32B7/02; G02B5/28; G02B5/30
Domestic Patent References:
WO2013057845A12013-04-25
WO2016148141A12016-09-22
Foreign References:
JP2005509179A2005-04-07
JP2003329841A2003-11-19
JP2002509279A2002-03-26
JP2013210598A2013-10-10
JP2015533222W
JP2013511746A2013-04-04
JP2016215643A2016-12-22
Other References:
See also references of EP 3851884A4
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