Light-shielding sheet, back protection sheet for solar cell module and solar cell module using it

Japanese Patent JP6361235

B2

PROBLEM TO BE SOLVED: To provide a light shielding sheet in which a light shielding layer that is used to constitute one layer of a back surface protection sheet for a solar battery module as a laminate and has excellent adhesiveness to a base material is formed by coating, and to provide a back surface protection sheet for a solar battery module using the light shielding sheet.SOLUTION: A back surface protection sheet for a solar battery module has a close contact reinforcing layer 62 disposed at an outermost layer to reinforce the close contact with a sealing material, and a light shielding layer 61 formed of a coating layer or film laminated on the other surface of the close contact reinforcing layer 62. The close contact reinforcing layer 62 comprises: a core layer 621 containing polypropylene resin having melting point of 160°C which is 80 wt% or more with respect to the whole resin; and skin layers 622 which contain 50 wt% or more of polypropylene resin having a melting point of 120°C or more and 135°C or less containing ethylene unit and are exposed to the outermost layers, where the close contact reinforcing layer 62 is a three-layer co-extrusion film of the skin layer 622, the core layer 621 and the skin layer 622 which are laminated in this order.

Miyaya Junya
Keita Arihara

JP2014074924A

July 25, 2018

March 31, 2014

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Dai Nippon Printing Co.,Ltd.

H01L31/049; B32B27/32

JP2013211401A
JP2011210835A
JP2013545831A
JP2010052163A
JP6206264A
JP2013165129A
JP2015191944A
JP2012216677A

US20130189517
US20130209776

Masayuki Masabayashi
Tetsuo Shiba
Hayashi Ichiyoshi

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