| 摘要 |
PROBLEM TO BE SOLVED: To provide a lining method for an existing pipeline which enables the finish of the inner face of the turn to be smooth and little in creases even if the existing pipeline is using a bend joint, especially a 90°bend joint. SOLUTION: In the inside of the hose material 2 drawn into the existing pipeline P there is previously inserted the inner face pressing belt 3 to press the inner face of the turn of the hose material 2. While pressing the inner face of the turn of the hose material 2, which has been drawn into the existing pipeline P and then pressurized and expanded, by applying a tensile force to both ends of this inner face pressing belt 3, the curable resin impregnated into the hose material 2 is cured. This forms a new pipeline in which the finish of the inner face of the turn is smooth and little in the creases. COPYRIGHT: (C)2008,JPO&INPIT
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