Dai Nippon Printing Co., Ltd.

Michiko Otsuka

Kouichirou Taniguchi

Jun Nishioka

Shinya Fukuda

Yo Miyashita

A solar cell encapsulant sheet including a resin layer (S) formed of a resin composition containing an olefine-based resin, wherein the storage elastic modulus at 25&#xb0; C. of the resin layer (S) is 200 MPa or less, at least one surface of the resin layer (S) is the sheet surface of the encapsulant sheet, and the sheet surface satisfies the following requirements (a), (b) and (c): (a) the dynamic friction coefficient on a tempered white glass plate is 1.5 or less, (b) the surface roughness Rzjis is from 0.1 to 50 &#x3bc;m, and (c) the static friction coefficient on a tempered white glass plate is 1.5 or less.

Sealing sheet for solar cell

A solar cell module having a good appearance after lamination and a method for producing such a solar cell module are provided by specifying the combination guideline for encapsulants capable of bettering the appearance after lamination. The solar cell module contains an upper protective material (A), an encapsulant (B) for use on the side of the upper protective material (A), a solar cell device (C), an encapsulant (D) for use on the side of a back sheet (E), and the back sheet (E), wherein the encapsulant (B) and the encapsulant (D) satisfy the following requirement (P), and the production method produces the solar cell module. Requirement (P): The flow beginning temperature (TB) (&#xb0; C.) of the encapsulant (B) and the flow beginning temperature (TD) (&#xb0; C.) of the encapsulant (D), as measured under a load of 1 kgf/cm, have the following relationship: TB&#x2212;TD&#x3e;0 (&#xb0; C.).

Solar battery module and method of manufacture thereof

Provided are a solar cell encapsulant material which facilitates production of solar cell modules, which does not require a crosslinking step and which is excellent in heat resistance and others, and a solar cell module produced by the use of the encapsulant material. The solar cell encapsulant material comprises a resin composition (C) that contains an olefin-based polymer (A) satisfying the following requirement (a) and an olefin-based polymer (B) satisfying the following requirement (b). (a) The crystal melting peak temperature of the polymer, as measured at a heating rate of 10&#xb0; C./min in differential scanning calorimetry, is lower than 100&#xb0; C. (b) The extrapolated onset temperature of melting of the polymer, as measured at a heating rate of 10&#xb0; C./min in differential scanning calorimetry, is 100&#xb0; C. or higher.

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Shiga, Japan

Michiko Otsuka