| 摘要 |
The present invention is directed to a method of making a flexible hose, comprising the steps of extruding a first poly(vinyl chloride) compound to form a tube, the tube having an inner cylindrical cavity coextensive with the tube; a) applying a textile reinforcement over the tube; b) extruding a second poly(vinyl chloride) compound over the textile reinforcement to form a cover layer, said tube, reinforcement and cover defining a hose composite; c) inserting a rigid mandrel into the inner cylindrical cavity; d) wrapping a fabric wrap around the outside of the cover of the hose composite; and e) processing the wrapped hose composite at a temperature in a range of 130 to 160° C. and a pressure of 30 to 70 psig for a time ranging from 5 to 40 minutes.
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