| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a gasket, which never deteriorates the function of a core material as a reinforcing material while forming homogenous rubber layers as seal layers on both sides of the core material, and a novel gasket obtained by the method. SOLUTION: The method for manufacturing a gasket 1 including a metal plate-made annular core material 2 and rubber layers 3 integrally fixed to both sides of the metal plate-made annular core material 2 includes: preparing a mold 4 composed of upper and lower dies 5, 6 having cavities 5a, 6a of the shape corresponding to the rubber layers 3, the metal plate-made annular core material 2 sheet-metal processed into a predetermined shape having a communicating portion 2a with which the rubber layers 3 on both sides can communicate at a peripheral portion, and an unvulcanized rubber material 30; supplying the unvulcanized rubber material 30 to the respective cavities 5a, 6a of the upper and lower dies 5, 6 while disposing the core material 2 between the upper and lower dies 5, 6; and then clamping the mold 4 to vulcanize and mold the rubber material 30 followed by demolding. The gasket 1 is obtained by this method. COPYRIGHT: (C)2011,JPO&INPIT |
