Bond Coat may be epoxy or polyester. The addition of the bond coat does add one overall build level to the wire dimension.
A bondable enamel coated, insulated electrical conductor such as magnet wire. The bondable electrical conductor is formed by a base insulation coating on a metallic conductor such as wire, the base coating being a thermosetting, resin enamel, and a bondable overcoat of polyamide-imide enamel applied on said base coating. The polyamide-imide enamel includes residual solvent so that the polyamide-imide enamel is self-bondable.
The bondable magnet wire produced as described above retains its desirable bondable characteristics even after storage at room temperature over a period of several months. It appears that the polymer coating retains its solvent under normal roomtemperature conditions, thus providing for a reasonable commercial shelf life. It has also been observed that the bondable wire does not self-bond during storage of spools of the bondable wire under ambient conditions, and special storage and handling conditions are not required.
