BONDING METHOD OF ETHYLENE-PROPYLENE RUBBER

摘要

PURPOSE:To bond the ethylene-propylene rubber with high reliability by interposing an ethylene ethyl acrylate copolymer between the ethylene-propylene rubber and a material to be bonded and heating and melting the whole. CONSTITUTION:The ethylene ethyl acrylate copolymer (EEA) or adhesives mainly comprising the EEA are interposed between the ethylene-propylene rubber (EP) and the material to be bonded of the EP. The whole is heated and melted at 100-150 deg.C, and said EP and the material to be bonded of the EP are bonded. The adhesive strength of the EEA is exhibited at a heating temperature of approximately 70 deg.C or more, but the heating temperature must be elevated up to 100 deg.C or more in order to obtain sufficient strength. On the other hand, a foaming phenomenon is generated because an additive of the EP transfers to an adhesive layer (EEA) and is decomposed or evaporated in a region of the heating temperature of 150 deg.C or more.