Title:
MULTI-LAYER LAMINATED FILM
Document Type and Number:
WIPO Patent Application WO/2016/204146
Kind Code:
A1
Abstract:
Provided is a multi-layer laminated film formed by alternately laminating at least three layers of an A layer that comprises a crystalline resin a that can be oriented biaxially, and an B layer that comprises a resin b that has a crystallinity lower than that of a, the multi-layer laminated film being characterized in that when the phase difference in a k-th layer from a surface layer is expressed as Re(k) and the total number of layers is expressed as n, the total phase difference Re of the multi-layer laminated film satisfies formula (1) and formula (2). Provided is a film having a low phase difference, even if a resin is used which is a crystalline resin that can be oriented biaxially and has a high mechanical strength and is a resin having large birefringence.
Inventors:
GOUDA WATARU (JP)
ARIKE TAKAFUMI (JP)
MATSUI HISATO (JP)
ARIKE TAKAFUMI (JP)
MATSUI HISATO (JP)
Application Number:
PCT/JP2016/067679
Publication Date:
December 22, 2016
Filing Date:
June 14, 2016
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B7/027; G02B5/30; G02F1/1335
Domestic Patent References:
| WO2014188954A1 | 2014-11-27 |
Foreign References:
| JP4489145B2 | 2010-06-23 | |||
| JP4849454B2 | 2012-01-11 | |||
| JP2014012401A | 2014-01-23 | |||
| JP2004004905A | 2004-01-08 | |||
| JP2004118185A | 2004-04-15 |
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