Method for manufacturing a metal-plastics composite tube and app

Details Method for manufacturing a metal-plastics composite tube and app Method for manufacturing a metal-plastics composite tube and app

1980-12-19

1983-01-25

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156218, 15624413, 15624414, 156327, 156466, 156500, 4251331, 427239, B29D 2304, B29D 2310

Patent

active

043701868

ABSTRACT:
The present invention relates to a method and apparatus for obtaining a metal-plastics composite tube. A layer of grafted polyethylene which comes directly into contact with the metal and a layer of cross-linkable polyethylene are extruded simultaneously at least inside this tube, with the aid of an extrusion nozzle having an annular conduit with two distinct coaxial inlets and a single outlet. The invention results in a composite tube having the malleability of lead, the rigidity of copper and a total inertia with respect to the aggressive agents flowing therein.

REFERENCES:
patent: 2820249 (1958-01-01), Colombo
patent: 3207651 (1965-09-01), Hood et al.
patent: 3376181 (1968-04-01), Larson et al.
patent: 3896764 (1975-07-01), Kiodl et al.
patent: 3987122 (1976-10-01), Baitz et al.
patent: 4161379 (1979-07-01), Sudyk
patent: 4199622 (1980-04-01), Kekumai et al.

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