Method and an apparatus for lining a pipe or duct

Details Method and an apparatus for lining a pipe or duct Method and an apparatus for lining a pipe or duct

1998-09-11

2000-03-07

Kashnikow, Andres

Pipes and tubular conduits

Repairing

Patches

138 97, F16L 5518, B29C 6328

Patent

active

060326980

ABSTRACT:
The invention relates to a method and an apparatus for lining a pipe through a sealing internal lining by using a flexible tube including adhesive, which is introduced into said pipe in turning inside out manner and is kept dimensionally stable until the adhesive is cured. To reduce the frictional force during the introducing operation a strip additive is deposited onto the outside of the flexible tube prior to the turning up operation. A strip additive having a gel-like consistence is used to minimize the frictional force. For a uniformly wetting the flexible tube with the strip additive, this is transferred into a liquid condition by heating prior to depositing. After depositing, it quickly cools down to the ambient temperature such that the required gel-like consistence is ensured for the introducing operation. Thereby it is possible to line pipes or ducts comprising several pipe bends an angles within the line course.

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patent: 5525049 (1996-06-01), Paletta
patent: 5612434 (1997-03-01), Epple et al.

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