Title:
LAMINATE FILM
Document Type and Number:
WIPO Patent Application WO/2019/069758
Kind Code:
A1
Abstract:
Provided is a laminate film which has a laminated structure part that is formed by laminating a layer (A layer) containing, as a main component, a polyester resin (resin A) having a dicarboxylic acid structural component and a diol structural component and a layer (B layer) containing, as a main component, a thermoplastic resin (resin B) having different optical properties from those of the resin A alternately so that the laminated structure part can be formed by at least 51 layers, wherein the refractive index of at least one surface of the laminated structure part is 1.68 to 1.80 inclusive, the critical load of the surface as measured in a scratching test at 100°C is 15 mN or less, and there exists at least one reflection band in which a reflectance of 30% or more continues over a range having a wavelength width of 20 nm or more in a reflectance profile as measured from at least one surface side of the laminated structure part. A laminate film can be provided, which does not undergo the layer-layer delamination between a layer containing a naphthalenedicarboxylic acid in the carboxylic acid structural component and a layer made from another resin, and which cannot be deteriorated in reflectance and transparency.
Inventors:
MASUDA YOSHIHIRO (JP)
AOYAMA SHIGERU (JP)
SAKAMOTO JUN (JP)
KOJIMA HIROJI (JP)
AOYAMA SHIGERU (JP)
SAKAMOTO JUN (JP)
KOJIMA HIROJI (JP)
Application Number:
PCT/JP2018/035626
Publication Date:
April 11, 2019
Filing Date:
September 26, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
G02B5/28; B32B27/36; G02B5/26
Domestic Patent References:
WO2015093413A1 | 2015-06-25 |
Foreign References:
JP2012081748A | 2012-04-26 | |||
US20170267579A1 | 2017-09-21 | |||
JP2012030563A | 2012-02-16 | |||
JP2005059332A | 2005-03-10 | |||
JP2004249587A | 2004-09-09 | |||
US5360659A | 1994-11-01 |
Other References:
See also references of EP 3693772A4
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