Patent ID: 8865505

Claim:
A lamination method using a laminator for solar cell module manufacture using an ethylene vinyl acetate resin as an encapsulant, wherein a diaphragm sheet of the laminator comprises a composition containing an ethylene-propylene-diene rubber and satisfies the following requirements (1) and (2): (1) swelling ratios with respect to an organic peroxide and a silane coupling agent contained in the encapsulant is not more than 20%, and (2) a creep deformation of the diaphragm sheet at a hot plate temperature of 130° C. is not more than 3 mm; and in a vacuum evacuation step at the time of lamination processing, a time required until a degree of vacuum within a lower chamber of the laminator reaches 133 Pa is not more than 100 seconds, and a degree of vacuum within the lower chamber at the time when 3 minutes elapsed after the degree of vacuum has reached 133 Pa is not more than 100 Pa.