B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/778
B29C 47/28 (2006.01) B29C 47/02 (2006.01) B29C 47/06 (2006.01) B29C 47/88 (2006.01) B29D 23/00 (2006.01) B29C 35/04 (2006.01)
Patent
CA 1314371
ABSTRACT OF THE DISCLOSURE Method and apparatus for producing a fiber-reinforced rubber hose having an inner rubber tube, a tubular reinforcing fiber layer, an outer rubber tube, and a resin cover tube, which are formed in this order on a core mandrel. After the formed cover tube is cooled to a temperature sufficiently low to harden the resin to an extent that substantially inhbits expansion of the outer rubber tube in the hardened cover tube, the unvulcanized inner and outer rubber tubes are microwave-heated to soften the rubber tubes, and to cause a thermal shrinkage of the tubular reinforcing fiber layer, for thereby causing a portion of the inner rubber tube to be forced through a network of an interlaced structure of the reinforcing fiber layer into the outer rubber tube. After the unvulcanized inner and outer rubber tubes are vulcanized, the resin cover tube is removed, and the fiber-reinforced rubber hose is prepared.
557156
Borden Ladner Gervais Llp
Tokai Rubber Industries Ltd.
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