Process for making a corrugated tube

Details Process for making a corrugated tube Process for making a corrugated tube

B - Operations, Transporting

29

C

B29C 53/30 (2006.01) B29C 35/02 (2006.01)

Patent

CA 2041603

A corrugated elastomeric tube having a Smooth interior surface (28) generally free from nipples can be produced by a novel process. 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 (23). 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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