| 摘要 |
The present invention relates to a cured-in-place resin-impregnated liner for renovating a pipeline, the liner being sealed by a transparent tape prior to resin impregnation. A liner assembly for renovating a pipeline having a pipeline inner surface comprises a tubular liner for being inverted into the pipeline. The liner comprises a continuous web of fibrous material, the web originally being flat and defining a first surface and an opposite second surface. The surfaces define a first edge and an opposite second edge. The second surface has a fluid-impermeable surface coating of a first polymeric material. The web is originally being folded by positioning the first and second edges adjacent each other to form the tubular liner. The first surface constitutes the inner surface of the tubular liner and the second surface constitutes the outer surface of the tubular liner. The first and second edges are joined and stitched together for establishing a continuous stitched area bridging the first and second edges. The liner further comprises a continuous, flexible and fluid-impermeable tape covering the continuous stitched area at the second surface and being fixated to the fluid-impermeable coating after a first phase transition from solid to liquid state by electromagnetic radiation of a first wavelength range and a subsequent second phase transition from liquid to solid state when allowed to cool. The tape is at least transparent to electromagnetic radiation of the first wavelength range and at least transparent to electromagnetic radiation of the second wavelength range. The liner also comprises a resin impregnating the liner and being curable when irradiated by electromagnetic radiation of the second wavelength range. |
