Method for manufacturing a coaxial cable
AssigneeKabelmetal Electro GmbH
InventorsGerhard Ziemek, Harry Staschewski
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Abstract
A method for manufacturing a coaxial cable is described, whereby a dielectric layer (2) is extruded over an inner conductor (1), a lengthwise incoming metal strip (3) is formed into a tube, having a lengthwise slot around the insulated conductor (1, 2). The tube (3) is welded along the slot to thereby form a welded seam (4), and the welded tube is drawn down onto the surface of the dielectric layer (2). A metal strip (3a) having a plastic coating (3b) at least on one of its major surfaces is used to form the tube (3), and its lengthwise edges are welded by a laser (19).
Claims21
A method for manufacturing a coaxial cable, comprising the steps of:
- providing an inner conductor;
- extruding a dielectric layer over said inner conductor;
- providing a lengthwise extending metal strip having a plastic coating on at least one of its surfaces;
- forming said metal strip into a tube around said dielectric layer, said tube having a lengthwise extending slot defined by lengthwise edges of said strip;
- laser welding said lengthwise edges of said strip together, thereby forming a lengthwise extending weld seam on said tube;
- and
- drawing said tube down onto said dielectric layer.
A method for manufacturing a corrosion-protected corrugated metal tube, comprising the steps of:
- providing a lengthwise extending metal strip having a copolymer coating on at least one major surface thereof;
- forming said metal strip into a tube having a lengthwise extending slot defined by lengthwise edges of said metal strip, an outer surface of said tube having said copolymer coating thereon;
- laser welding said lengthwise edges of said metal strip, thereby forming a lengthwise extending weld seam on said tube;
- restoring an area of said copolymer coating adjacent said weld seam destroyed by the laser welding;
- and
- continuously corrugating said tube along its length.
Dependencies are inferred from the claim text.