| 摘要 |
<p>The present invention provides that an assembly can be fed into a pipeline or passageway to which a lining tube is to be applied. The lining is impregnated with curable synthetic resin, and surrounds an inflatable bladder, the bladder in turn surrounding a core pipe through which medium flowing in the pipeline or passageway can pass during the lining operation. The core pipe is of sufficiently rigid nature to withstand an inflation pressure to move the lining tube onto the pipeline or passageway surface by inflation of the bladder, but yet is sufficiently flexible and bendable so as to bend enabling it to follow curves and falls in the pipeline or passageway into which it is inserted. Specifically the tube should be sufficiently bendable to enable the assembly to be fed down a manhole and into the underground pipeline or passageway.</p> |
