Method of manufacturing a sealed cable employing an extruded...

Details Method of manufacturing a sealed cable employing an extruded... Method of manufacturing a sealed cable employing an extruded...

H - Electricity

01

B

18/642

H01B 13/14 (2006.01) H01B 7/28 (2006.01)

Patent

CA 1158410

F.9263 IMPROVED METHOD OF MANUFACTURING A SEALED CABLE EMPLOYING AN EXTRUDED FOAM BARRIER ABSTRACT An improved method for producing sheathed cable which includes an inner insulated conductor/conductor group, an outer corrugated metal sheath, and a barrier layer of a closed-cell foam disposed therebetween to prevent the passage of gas or vapors via the cable. The method includes the steps of extruding a heat activated closed cell foam about the insulated conductor, forming an outer sheath around the foam, and activating the foam to fill the space between the inner and outer sheaths. In accordance with varying alternative embodiments of the invention, the extruded barrier foam layer may be continuous or interrupted; and/or may comprise an already foamed material compressed by formation of the outer metallic shield.

362262

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