| 摘要 |
PCT No. PCT/JP82/00263 Sec. 371 Date Nov. 30, 1982 Sec. 102(e) Date Nov. 30, 1982 PCT Filed Jul. 13, 1982 PCT Pub. No. WO83/00305 PCT Pub. Date Feb. 3, 1983.In an apparatus for manufacturing reinforced hoses, a reinforced layer forming device is arranged concentric with material efflux port of an outer tube extruder and an inner tube extruder so that inner tube formation, the reinforcing layer formation and the outer tube extruding can be performed continuously and nearly at the same time on a torpedo projected beyond the top end of an inner die (2) of the inner tube extruder (1). In order to obtain the reinforcing layer of uniform spiral structure stably, a spiral device (21) as a reinforcing layer forming device has an inner spinner (25) and an outer spinner (26), each having conical frustum form, and top end portions of the inner and outer spinners are provided with a plurality of thread holes (G1, G2) and inserted in a gap between the intermediate die (12) and the inner die (2), and the inner and outer spinners can be rotated integrally with inner and outer bobbin carriers respectively.
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