| 摘要 |
PURPOSE:To make the thickness of a lining film uniform, by injecting a lining material having flowability in a pipe to be treated to bring the interior of the pipe to be treated to a closed state by the lining material and generating pressure difference between both side surfaces of the lining material. CONSTITUTION:A lining material 10 is injected in a pipe 1 to be treated in an amount about 1.1-1.2 times a required calculation amount. After the completion of injection, an inlet flow amount control valve 5 is adjusted not only to supply pressurized fluid A in the pipe but also to adjust and open an outlet flow amount control valve 6. The lining material 10 injected in the pipe is allowed to advance toward the direction of an outlet end 1b at a predetermined speed by the pressure difference DELTAP between both sides of the lining material 10. The lining material 10 injected in the pipe and accumulated in a plug form is formed into a lining film 10b having a constant thickness (t). By this method, the coating thickness of the film can be easily controlled.
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