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Title:
FOAM SHEET
Document Type and Number:
WIPO Patent Application WO/2015/029879
Kind Code:
A1
Abstract:
A foam sheet according to the present invention is composed of a foam which has a thickness of 30 to 500 μm, a density of 0.2 to 0.7 g/cm3, an average cell diameter of 10 to 150 μm and such a property that a loss tangent (tanδ), which is a ratio of the storage modulus to the loss elastic modulus at an angular frequency of 1 rad/s in a dynamic viscoelasticity measurement, has a peak top at a temperature falling within the range from -30 to 30˚C inclusive. It is preferred that the maximum value of the loss tangent (tanδ) in the temperature range from -30 to 30˚C inclusive in the foam is 0.2 or more.

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Inventors:
DOI KOHEI (JP)
NAGASAKI KUNIO (JP)
OTSUKA TETSUYA (JP)
OKADA MIKA (JP)
KATO KAZUMICHI (JP)
TOKUYAMA HIDEYUKI (JP)
KITAHARA TSUNAKI (JP)
TAKAHASHI TADAO (JP)
MATSUSHITA KIICHIRO (JP)
Application Number:
PCT/JP2014/071916
Publication Date:
March 05, 2015
Filing Date:
August 21, 2014
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
C08J9/30; C09J7/26
Domestic Patent References:
WO2013191222A12013-12-27
WO2013099755A12013-07-04
Foreign References:
JP2010260880A2010-11-18
JP2010084798A2010-04-15
JP2009108314A2009-05-21
JP2010215805A2010-09-30
JP2001100216A2001-04-13
JP2002309198A2002-10-23
JP2006047277A2006-02-16
JP2007051271A2007-03-01
Other References:
"Polymer Handbook", 1987, JOHN WILEY & SONS, INC.
See also references of EP 3040369A4
Attorney, Agent or Firm:
GOTO, YUKIHISA (JP)
Yukihisa Goto (JP)
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