NOVELTY - Manufacture of sealing film (13A,13B) involves mixing ethylene-vinyl acetate copolymer, polyethylene, 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.    USE - Manufacture of sealing film (claimed) used for solar cell.    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, 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).    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)