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Patent Searching and Data


Title:
FILM FOR SOLAR-CELL BACK SHEET, SOLAR-CELL BACK SHEET INCLUDING SAME, AND SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2016/190146
Kind Code:
A1
Abstract:
A film for solar-cell back sheets which is a void-containing polyester film and which as a whole has a porosity of 10% or greater, the polyester film being constituted of a polyester resin having a terminal carboxyl content of 35 eq/ton or less. The thickness-direction cross-section of the polyester film satisfies the following. A line perpendicular to the plane direction is drawn from one surface of the film to the other surface, and three points are taken thereon by which the line extending from one surface to the other surface is equally divided into four along the thickness direction (a film-thickness-direction center point (point C1) and intermediate points (point C2-1) and (point C2-2) located between the film-thickness-direction center point and the film surfaces). Lines (horizontal dividing lines) parallel to the film-plane direction and passing respectively through the points are drawn. When the average area per void of voids present on the horizontal dividing line passing through point C1 is expressed by Sc (µm2), the average area per void of voids present on the horizontal dividing line passing through point C2-1 is expressed by Scs (µm2), and the average area per void of voids present on the horizontal dividing line passing through point C2-2 is expressed by Scs' (µm2), then Sc/Scs and/or Sc/Scs' is 1.1-35. Provided are: a film for solar-cell back sheets which combines an excellent output-improving effect with excellent tight adhesion; a solar-cell back sheet including the film; and a solar cell.

Inventors:
TATSUMI NORIYUKI (JP)
HORIE MASATO (JP)
SENDAI TOSHIHIRO (JP)
SHIBATA YU (JP)
Application Number:
PCT/JP2016/064417
Publication Date:
December 01, 2016
Filing Date:
May 16, 2016
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
H01L31/049; B32B5/22; C08G63/00; C08J5/18; C08J9/00; C08K3/00; C08L67/00
Foreign References:
JP2013235219A2013-11-21
JP2014162107A2014-09-08
JP2014058154A2014-04-03
JP2012253203A2012-12-20
JP2002100788A2002-04-05
JP2003139926A2003-05-14
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