| 摘要 |
PROBLEM TO BE SOLVED: To provide a belt manufacturing method capable of manufacturing a belt good in thickness presision for a short time. SOLUTION: An unvulcanized rubber sheet 5 is wound around the outer periphery of a die 10 and both end parts 6 of the unvulcanized rubber sheet 5 are supperposed one upon another to form a lap part 11. This unvulcanized rubber sheet 5 is vulcanized under heating and pressure in a vulcanizer to be molded into an annular belt main body 2 while bonding the lap part 11. Preliminarily, both end parts 6 of the unvulcanized rubber sheet 5 are accurately formed into a stepped shape by rolling processing. The thickness of the lap part 11 becomes almost equal to that of another region and the protruded or recessed parts can be prevented from being formed on the belt body 2. Since it is unnecessary to remove the protruded or recessed parts, the manufacturing time of the belt becomes short. COPYRIGHT: (C)2004,JPO&NCIPI |
