NOVELTY - Manufacture of sealing film (13A,13B) involves mixing ethylene-vinyl acetate copolymer, polyethylene, coloring agent and organic peroxide, and molding mixture. The content of low temperature decomposing-type organic peroxide is 0.05-1 part mass with respect to 100 parts mass total amount of ethylene-vinyl acetate copolymer and polyethylene. The mixing is performed at X degrees C, and organic peroxide comprises low temperature decomposing-type organic peroxide (A) having 10 hour half-life temperature of a degrees C, and pyrolysis-type organic peroxide (B) having 10 hour half-life temperature of b degrees C.    USE - Manufacture of sealing film used for manufacture of solar cell module (all claimed).    ADVANTAGE - The method enables efficient manufacture of sealing film by suppressing the thickness, non-uniformity, stripe-shaped defects, shrinkage of sealing film, and position shift of electricity generating element at the time of solar cell preparation, and provides solar cell having improved generating efficiency.    DETAILED DESCRIPTION - Manufacture of sealing film involves mixing ethylene-vinyl acetate copolymer, polyethylene, coloring agent and organic peroxide, and molding the mixture. The content of low temperature decomposing-type organic peroxide is 0.05-1 part mass with respect to 100 parts mass total amount of ethylene-vinyl acetate copolymer and polyethylene. The mixing is performed at X degrees C, and the organic peroxide comprises low temperature decomposing-type organic peroxide (A) having 10 hour half-life temperature of a degrees C, and pyrolysis-type organic peroxide (B) having 10 hour half-life temperature of b degrees C, which satisfies the relation: a( degrees C) less than X( degrees C)-30( degrees C) (I) and b( degrees C) more than X( degrees C)-20( degrees C) (II). An INDEPENDENT CLAIM is included for manufacture of solar cell module, which involves forming laminate by laminating light-receiving surface side transparent protection component (11), light-receiving surface side sealing film, electricity generating element (14), back surface side coloring sealing film, and back surface side protection component (12) in order, and integrating obtained product by pressurizing and heating, and in which the sealing film is used as back surface side coloring sealing film.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of solar cell.    Light-receiving surface side transparent protection component (11)    Back surface side protection component (12)    Sealing film (13A,13B)    Electricity generating element (14)    Connection tab (15)