Process and apparatus for manufacturing axi-symmetrical three-di

Details Process and apparatus for manufacturing axi-symmetrical three-di Process and apparatus for manufacturing axi-symmetrical three-di

1984-12-20

1986-11-11

Simmons, David

Pipes and tubular conduits

Flexible

Spirally wound material

28110, 138137, 138144, 156180, 156195, 156425, 156446, 242 2, B32B 3100

Patent

active

046216626

ABSTRACT:
The present invention relates to a process for manufacturing an axi-symmetrical three-dimensional structure formed by superposed layers of fibrous material bonded together, said process comprising the following steps of:--bringing onto a rotary mandrel having the section of the structure to be manufactured, a tape of fibrous material whose width is several times less than the length of a generatrix of said structure:--winding the tape over the mandrel to form superposed layers, each layer being formed by successive turns of the tape of fibrous material, and--during winding, successively bonding the layers together by needling, said needling being effected at the place where the tape is superposed on the mandrel or on the previously formed layer. The invention also relates to an apparatus for carrying out said process.

REFERENCES:
patent: 3250493 (1966-05-01), Burkley et al.
patent: 3540096 (1970-11-01), Porta
patent: 3673024 (1972-06-01), Eriksson
patent: 3909893 (1975-10-01), Wilde

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