Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1992-06-12
1993-04-27
Lusigan, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156143, 156144, 156287, 156294, 427238, 427239, 427384, 138145, E04B 200, B05D 722
Patent
active
052058867
ABSTRACT:
An improved method of inserting a liner into a metallic pipeline is disclosed. The liner is formed from a plurality of concentric tubes that are enveloped in a flexible, expansible, tear resistant material. When the concentric tubes are pulled into the pipeline, the tear resistant material provides protection against tearing of the tubes by burrs, snags or other imperfections on the inside of the metallic pipeline. The tear resistant material may be a fabric, woven material or mesh. Materials having a structure that permits escape of fluid entrapped during subsequent expansion of the concentric tubes on formation of the liner are preferred. The method permits the lining of pipeline sections that have bends, loops or the like, while protecting the liner from tearing during insertion into the pipeline.
REFERENCES:
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patent: 2881093 (1959-04-01), Buell
patent: 3307996 (1967-03-01), Keneipp Jr.
patent: 3560295 (1971-02-01), Kimbrell
patent: 4681783 (1985-12-01), Hyoda et al.
patent: 4687677 (1987-08-01), Jonasson
patent: 4865673 (1989-09-01), Shishkin et al.
Du Pont Canada Inc.
Lusigan Michael
Utech Benjamin L.
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