Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-11-17
1978-08-01
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 82, 156149, 156172, 15624413, 138125, 138132, 138144, 138174, 138DIG2, 138DIG3, B32B 3126
Patent
active
041040953
ABSTRACT:
A method and apparatus are disclosed for producing a composite pipe for handling destructive materials under pressure and vacuum conditions. The pipe includes a tubular liner formed of thermoplastic material capable of withstanding the destructive material. A strip of glass fiber fabric is helically wrapped around the outer surface of the liner. Heat is applied externally to the wrapped liner at a sufficient rate to simultaneously melt the exterior surface of the liner and thermally expand the liner radially outwardly into the openings in the fabric. Upon cooling, a permanent mechanical bond is achieved between the liner and the fabric. A layer of fiber glass and resin is then applied to the outer surface of the wrapped liner for structional rigidity and strength.
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