| 摘要 |
A corrugated elastomeric tube having a smooth interior surface (28) generally free from nipples is produced. A first step in the process is carried out by positioning an unvulcanized elastomeric tubing (14) over a mandrel (12) having a corrugated outer surface (13). The mandrel (12) has an exterior surface (30) which is free from holes. Next, each end of the tubing (14) is clamped to the mandrel (12). The tubing (14) and the mandrel (12) are heated to soften and vulcanizing the tubing (14). Also, pressure is provided to cause the tubing (14) to conform with the corrugated outer surface (13) of the mandrel (12). The vulcanized corrugated tube is then removed from the mandrel (12).
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