Multilayer metal fiber yarn
AssigneeNV Bekaert SA
InventorsLisa Le Percq, Stefaan De Bondt, Henk Troost
Life of this patent
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Abstract
A new metal fiber yarn (1) and methods for obtaining such a yarn are provided. The metal fiber yarn comprises at least 9 bundles (8) of continuous metal fibers. Each of the bundles comprises at least 30 metal fibers (7). The at least 9 bundles are arranged in at least 2 layers of continuous metal fiber bundles as seen over a transverse cross section through the metal fiber yarn. This new metal fiber yarn has an increased flexlife and strength.
Claims14
A metal fiber yarn comprising at least 9 bundles of continuous metal fibers,
- wherein each of said continuous metal fiber bundles comprises at least 30 continuous metal fibers and said continuous metal fiber bundles are twisted together with a predetermined number of torsions per meter to form a metal fiber yarn,
- wherein said at least 9 bundles of continuous metal fibers are arranged in at least 2 layers over a transverse cross section of said metal fiber yarn,
- wherein a layer cabling angle and/or direction are not equal over all layers.
A metal fiber yarn comprising at least 9 bundles of continuous metal fibers,
- wherein each of said continuous metal fiber bundles comprises at least 30 continuous metal fibers and said continuous metal fiber bundles are twisted together with a predetermined number of torsions per meter to form a metal fiber yarn,
- wherein said at least 9 bundles of continuous metal fibers are arranged in at least 2 layers over a transverse cross section of said metal fiber yarn,
- wherein at least part of the metal fibers in said metal fiber bundles have a cross section comprising at least one concentric metal layer over a metal core.
A method for producing a metal fiber yarn comprising:
- providing at least 9 continuous metal fiber bundles, each of said continuous metal fiber bundles comprising at least 30 continuous metal fibers,
- twisting together part of said at least 9 metal fiber bundles with a predetermined number of torsions per meter, thereby obtaining a first layer, and
- twisting the remainder of said at least 9 metal fiber bundles around said first layer with the predetermined number of torsions per meter in at least one next layer,
- wherein a layer cabling angle and/or direction are not equal over all layers.
A method for producing a metal fiber yarn comprising:
- providing at least 9 continuous metal fiber bundles, each of said continuous metal fiber bundles comprising at least 30 continuous metal fibers, and
- twisting together all of said metal fiber bundles with a predetermined number of torsions per meter thereby obtaining a metal fiber yarn,
- wherein said at least 9 bundles of continuous metal fibers are arranged in at least 2 layers over a transverse cross section of said metal fiber yarn,
- wherein a layer cabling angle and/or direction are not equal over all layers.
A method for producing a metal fiber yarn comprising:
- providing at least 9 composite wires drawn to final diameter, each of said at least 9 composite wires comprising at least 30 continuous metal fibers,
- twisting together part of said at least 9 composite wires with a predetermined number of torsions per meter thereby obtaining a first layer,
- twisting the remainder of said at least 9 composite wires around said first layer with the predetermined number of torsions per meter, in at least one next layer, thereby obtaining a composite wire construction, and
- leaching said composite wire construction in appropriate acid, thereby obtaining the metal fiber yarn.
A method for producing a metal fiber yarn comprising:
- providing at least 9 composite wires drawn to final diameter, each of said composite wires comprising at least 30 continuous metal fibers,
- twisting together all of said composite wires with a predetermined number of torsions per meter, thereby obtaining a composite wire construction, and
- leaching said composite wire construction in appropriate acid, thereby obtaining the metal fiber yarn.
Dependencies are inferred from the claim text.