Patent ID: 7713374
Filing Date: 2010-05-11
Classification: B29C

Abstract:
1. A pipeline lining method in which a tubular pipe lining material impregnated with a thermosetting resin is inserted into a pipeline and the thermosetting resin impregnated in the pipe lining material is cured to line the pipeline with the pipe lining material, comprising: inserting the pipe lining material into the pipeline and expanding the pipe lining material to press against an inner peripheral surface of the pipeline; providing a first fluid source, a second fluid source separate and independent from the first fluid source, and a switching valve that switches between the first fluid source and the second fluid source; with the switching valve switched to the first fluid source, spraying hot water or steam from the first fluid source onto the pipe lining material via a hose to cure the thermosetting resin impregnated therein and thereby cure the pipe lining material, the sprayed hot water or steam being accumulated in a bottom part of the pipe lining material; pumping hot water accumulated in the bottom part of the pipe lining material to the second fluid source and cooling the hot water in the second fluid source to provide cooling water; switching the switching valve to the second fluid source to supply the cooling water to the hose from the second fluid source; and spraying the cooling water onto the cured pipe lining material via the hose to cool the cured pipe lining material.