Method of making composite pipe having an integral bell end

Details Method of making composite pipe having an integral bell end Method of making composite pipe having an integral bell end

1980-04-07

1981-09-22

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156172, 156173, B65H 8100

Patent

active

042908361

ABSTRACT:
A composite reinforced plastic pipe having an integral bell end and method for making the same are disclosed wherein the composite pipe has a resin impregnated surfacing veil liner, a first resin impregnated continuous fiberglass strand reinforced layer coaxial along the inner liner, a sand-resin core layer formed along the cylindrical portion of the pipe but not on the bell end, a resin impregnated surfacing mat formed coaxially along the length of the exposed first fiberglass strand reinforced layer on the bell end and along the core layer, and an outer resin reinforced roving layer formed coaxially along the full length of the pipe, the composite pipe being cured to form a high strength pipe having uniform radial stiffness and improved resistance to water migration.

REFERENCES:
patent: 3406724 (1968-10-01), Carlstrom et al.
patent: 3623930 (1971-11-01), Grosh et al.
patent: 3884269 (1975-05-01), Schetty et al.
patent: 4114657 (1978-09-01), Langenfeld

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