SEALING MATERIAL FOR SOLAR CELL MODULES, AND MANUFACTURING METHOD THEREOF

摘要

Disclosed are a sealing material for solar cell modules and a manufacturing method thereof capable of endowing good transparency and heat resistance to the sealing material for solar cell modules while using a polyethylene-based resin. The disclosed sealing material for solar cell modules uses a polyethylene-based resin with a density of 0.900g/cm3 or less, and an MFR between 0.1g/10min and 1.0g/10min. The sealing material is obtained by melt molding a resin composition containing a polyethylene-based resin with density 0.890g/cm3 or less, and a polymerization initiator contained at 0.02 mass% or more but less than 0.5 mass% of the composition, wherein the density difference of the resin composition before and after the melt molding is within 0.05g/cm3, and the MFR difference of the resin composition before and after the melt molding is 1.0g/10min or greater.