Method of forming prestressed filament wound pipe

Details Method of forming prestressed filament wound pipe Method of forming prestressed filament wound pipe

1978-10-02

1980-08-12

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156175, 156425, B65H 8100

Patent

active

042171580

ABSTRACT:
A method of manufacturing a glass fibre reinforced pipe by winding a first resin impregnated pipe layer of glass fibres oriented approximately in the circumferential direction and setting the layer so formed. The set first pipe layer is then subjected to axial pressure loading by an external force and a pressure medium from inside. A second resin impregnated pipe layer having glass fibres extending approximately in the axial direction is then applied to the loaded first pipe layer, and set. After setting, the external pressure force and the pressure medium are removed so that a residual stress or prestress condition forms in the finished pipe.

REFERENCES:
patent: 2984870 (1961-05-01), Warnken
patent: 3033730 (1962-05-01), Martin
patent: 3202560 (1965-08-01), Michael
patent: 3210228 (1965-10-01), Bluck
patent: 3231442 (1966-01-01), Michael
patent: 3282757 (1966-11-01), Brussee

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