| 摘要 |
A durable three-component hose comprises a nylon tube, a reinforcement of one or more plies of synthetic yarns or monofilaments wound or braided or spirally wrapped over the tube, and a melt-extruded polyolefin cover. Extraordinary burst strength is achieved by using a mixed reinforcement, in which some of the plies or wrappings are capable of being bonded with the nylon tube, and in which other plies or wrappings are capable of bonding with the polyolefin cover. In a typical construction the reinforcement is bonded by solvating the nylon tube surface with resorcinol so that nylon yarns of the applied reinforcement will bond therewith and the olefin cover - e.g. polypropylene to which a minor portion of EDPM or SBR rubbers has been admixed - is bonded to that portion of the reinforcement which is polyolefin, for example polypropylene yarns or monofilaments. |
