B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1174, 18/934
B29C 35/06 (2006.01) B29D 23/00 (2006.01) B29C 47/00 (2006.01)
Patent
CA 1096575
PROCESS AND APPARATUS FOR MANUFACTURING REINFORCED ELASTOMERIC HOSES ABSTRACT OF THE DISCLOSURE A process is provided for vulcanizing an elastomeric reinforced hose or a hose having its core tube reinforced with fibrous material. In accordance with the process a hose having an elastomeric sheath over its reinforcing material is preferably continuously passed through a tubular preheater which softens the surface of the sheath and the hose is then passed through a heated sizing die where only the surface is initially softened and then vulcanized before leaving the die. The die sizes the diameter of the hose and at the same time smooths out the surface of the sheath. The sized hose is passed immediately into a vulcanizer where it is heated to vulcanize completely. The vulcanized hose is then cooled. The apparatus provided for practicing the process has, a heated die, a vulcanizing unit and a unit for cooling the vulcanized hose all connected in series. The apparatus may also have a tubular preheater. The preheater is steam jacketed and may be provided with a means for lubricating the surface of the hose. The sizing die may be steam jacketed and the vulcanizer may be one which heats the hose with live steam. The vulcanizing unit is provided with a means for separating condensate from the hose and for flowing the con- densate out of the vulcanizer. The entrance end of the pre- heater is sealed by means of an elastomeric sealing ring and an elastomeric sealing member is provided at the exit end of the apparatus. The hose is cooled with cooling water fed into the bore of the cooling member.
279770
Gowling Lafleur Henderson Llp
Industrie Pirelli S.p.a.
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