Retroreflecting elongated metal wire product
A metal wire is first coated with a coating. In this first coating, retro-reflective beads are partly embedded. Thereafter the beads and the first coating are covered by a protective coating. The metal wire is made from a strand or wire made of stainless steel, or low carbon steel, or high carbon steel. The retro-reflective metal wire is used for diverse applications, such as spoke wire, signalization means, or bookbinding wire.
1. An elongated metal wire product comprising:
one or more metal wires,
a first polymer coating covering said one or more metal wires,
a second transparent polymer coating deposited on top of said first coating, and
retro reflective beads with a diameter of between 20 and 150 microns,
wherein each of said beads is partly embedded in said first coating, wherein a remainder of each bead is at least partly covered by said second coating.
2. The elongated metal wire product of claim 1 , wherein said beads are completely covered by said second coating.
3. The elongated metal wire product of claim 1 , wherein said metal is steel.
4. The elongated metal wire product according to claim 1 , wherein said first coating is opaque.
5. The elongated metal wire product according to claim 1 , wherein said first coating is clear.
6. The elongated metal wire product according to claim 1 , wherein said first polymer coating comprises one polymer out of the group consisting of polyethyleneterephtalate, polyvinylchloride, polybuthyleneterephtalate, polypropylene, polybutene, thermoplastic polyurethane, polyamide 6, polyamide 6-6 and blends thereof.
7. The elongated metal wire product according to claim 1 , wherein said second transparent polymer coating comprises one polymer out of the group consisting of polyethylene, polyacryl, polyethyleneterephtalate, polyvinylchloride, fluoropolymers, polybuthyleneterephtalate, metallocene plastomers and thermoplastic polyurethane and blends thereof.
8. The elongated metal wire product according to claim 1 , wherein said retro reflective beads have a reflective coating on a surface of the beads that is in contact with said first coating.
9. The elongated metal wire product according to claim 8 , wherein a surface area of said reflective coating that is in contact with said first coating is more than one quarter of a surface area of the beads.
10. The elongated metal wire product according to claim 9 , wherein the surface area of said reflective coating that is in contact with said first coating is less than half of the surface area of the beads.
11. The elongated metal wire product according to claim 1 , wherein said metal wire product includes just one metal wire.
12. An elongated metal wire product comprising at least two elongated metal wire products of which at least one is elongated metal wire product according to claim 1 .
13. The elongated metal wire product according to claim 1 , wherein the retro reflective beads have a spherical shape.
14. The elongated metal wire product according to claim 1 , wherein the first polymer coating is in direct contact with said metal wires.