Method and apparatus for producing tubular article

Details Method and apparatus for producing tubular article Method and apparatus for producing tubular article

1978-05-15

1982-11-09

Bryant, III, James E.

Pipes and tubular conduits

Flexible

Braided, interlaced, knitted or woven

138124, F16L 1108

Patent

active

043579620

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 structural rigidity and strength.

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patent: 3945867 (1976-03-01), Heller et al.
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