| 摘要 |
PURPOSE:To prevent a defective weld from being generated at the time of extrusion, by a method wherein a rubber composition containing a methylene doner and a methylene acceptor is extruded into a tubular shape. CONSTITUTION:A rubber composition which contains hexamethoxymethylmelamine as a methylene doner and resorcinol as a methylene acceptor and a rubber composition which does not contain any methylene doner and any methylene acceptor are individually prepared by kneading rolls, and are extruded into a tubular shape, followed by vulcanizing at 155 deg.C for 40min. |
