| 摘要 |
PROBLEM TO BE SOLVED: To provide a process for producing underwater sound absorbing wedges which can improve productivity and workability and reduce cost since processing molds are not required and, in addition, the elimination of the bonding step and the mass production of underwater sound absorbing wedges in any shape in the final cutting step are possible in producing the underwater sound absorbing wedges. SOLUTION: A process for producing underwater sound absorbing wedges comprises adding a predetermined amount of microballoons of the unexpanded type to a rubber compound, kneading the resulting mixture, then molding the kneaded product into a sheet, expanding the microballoons added to the rubber compound by the vulcanization heat in the vulcanization step of this sheet material in vulcanization molding to form cells within the sheet material, and cutting the resulting sheet material into the predetermined shape of a wedge in the cutting step.
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