Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1997-11-26
2000-05-30
Aftergut, Jeff H.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156294, 156423, 264269, 138 97, 138 98, F16L 551645, F16L 5518
Patent
active
060687258
ABSTRACT:
A method for installing and curing a cured in place lateral seal at the connection between a main pipeline and a lateral connection is provided. The method includes placing a resin impregnated lateral seal in the form of a top hat with a brim portion and short tubular portion onto a cylindrical flexible bladder cartridge having a tubular recess for receiving the tubular portion of the seal with the brim portion along the outer portion of the bladder, placing an assembly carrying the bladder to the location of the lateral and pressing the brim portion of the seal against the interior of the main pipeline and everting the tubular portion out of the tubular recess into a portion of the lateral to form the seal. Radiant energy, preferably, light is then applied to the resin to initiate the cure, the bladder is cooled and then deflated. A rapid cure using a light curable resin and exchanged of loaded cartridges allows installation of a number of laterals in the time it usually takes to cure a lining in a pipeline by use of heat alone.
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Murray Kevin P.
Severs Kerry D.
Smith Philip M.
Tweedie John
Wells Jeff P.
Aftergut Jeff H.
Buchanan Lloyd G.
Insituform (Netherlands) B.V.
Wolfson Michael I.
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