Title:
FOAM SHEET
Document Type and Number:
WIPO Patent Application WO/2013/011882
Kind Code:
A1
Abstract:
Provided is a foam sheet which exhibits extremely excellent diffuse reflection performance, while having excellent flexibility and excellent heat resistance. This foam sheet does not require a foaming method such as a supercritical fluid foaming method that is not easily controlled nor a mechanical post-treatment such as cutting.
A foam sheet of the present invention comprises, as the outermost layer, a foam layer that contains a hydrophilic polyurethane polymer, and the surface of the foam layer has an arithmetic average specular reflectance of 1% or less within the wavelength range of 400-500 nm.
Inventors:
HYODO TOMONORI (JP)
HIRAO AKIRA (JP)
HIRAO AKIRA (JP)
Application Number:
PCT/JP2012/067658
Publication Date:
January 24, 2013
Filing Date:
July 11, 2012
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
HYODO TOMONORI (JP)
HIRAO AKIRA (JP)
HYODO TOMONORI (JP)
HIRAO AKIRA (JP)
International Classes:
C08J9/28; C08F2/32
Domestic Patent References:
| WO2006115087A1 | 2006-11-02 |
Foreign References:
| JP2003004921A | 2003-01-08 |
Attorney, Agent or Firm:
MOMII, Takafumi (JP)
Takafumi Momii (JP)
Takafumi Momii (JP)
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Claims: