Patent ID: 7803245

Claim:
A pipeline lining method, comprising the steps of: inserting a tubular lining material impregnated with a thermosetting resin and in an everted state into a pipeline and expanding and pressing the everted tubular lining material against an inner peripheral surface of the pipeline; in conjunction with the insertion of the tubular lining material, inserting into the pipeline a tube provided with a plurality of spraying means for spraying a vapor mist or hot water mist, the spraying means being positioned at predetermined intervals along a lengthwise direction of the tube, each of the spraying means comprising at least one nozzle having a hole in communication with the tube and a diffusing member associated with the at least one nozzle; spraying from each nozzle vapor or hot water supplied thereto under pressure and, using the associated diffusing member, deflecting the sprayed vapor or hot water and diffusing the deflected vapor or hot water in the form of a vapor mist or hot water mist; and directing the vapor mist or the hot water mist diffused by each diffusing member onto the tubular lining material pressed against the inner peripheral surface of the pipeline to cure the thermosetting resin impregnated in the tubular lining material to line the pipeline with the tubular lining material.