Patent ID: 6302983
Filing Date: 2001-10-16
Classification: B29C,B29K,B29L,F16L

Abstract:
Method for renovation of a length of a pipeline comprising introduction of a lining pipe into an existing pipeline, said lining pipe having a length corresponding to a length to be renovated and consisting of fusible polymer lining layers in a folded condition, and unfolding of the lining pipe in order to line the existing pipeline, comprising the steps of building up said lining pipe by successively introducing said lining layers (1,4,5,6,7,8,9) in the existing pipeline to be lined, successively pressuring said lining layers and fusing them together by exposing said lining layers (1, 4-9) to fusion heat from an infrared heat source (3), wherein said lining layers are alternately opaque and translucent to infrared heating energy from said infrared heat source (3), and wherein said infrared heat source (3) is carried along an inside surface of an innermost layer of said lining pipe built up so far.