The present disclosure relates to methods of making an article comprising PTFE, methods of making expanded articles comprising PTFE, articles comprising PTFE, and expanded articles comprising PTFE having improved mechanical and electrical performance and particularly reduced variability in mechanical, electrical and dimensional properties, particularly over long lengths.

A method of manufacturing a noise shield cable, wherein the noise shield cable includes a conductor, an insulation provided around the conductor, a noise shielding layer provided around the insulation and a sheath provided around the noise shielding layer, includes providing an insulating material including a magnetic powder, pressing and then rolling the insulating material to form a sheet, and winding the sheet around the insulation to form the noise shielding layer. An aspect ratio of the magnetic powder represented by a maximum length/a maximum thickness is more than 10.

It is found and confirmed that a harmonic wave source is a traditionally-used multi-core wire with mutually-exposed core wires. By using a multi-core wire or a single-core wire with mutually-insulated core wires to replace the traditionally-used multi-core wire, a large number of harmonic waves produced by the mutually-exposed core wires can be avoided, the working quality of a power utilization device and an electric energy and electrical signal transmission network is improved at low costs, and electric energy is saved. A method for using a lead wire structure with insulated core wires is used to avoid harmonic ripple noise produced in seamed transmission, or to avoid electric energy waste caused by harmonic ripple noise produced in seamed transmission, or to avoid the influence of harmonic ripple noise produced in seamed transmission on the working quality of a power utilization device or an electric energy and/or electrical signal transmission network. A power utilization device other than an earphone and an electric energy and electrical signal transmission network system, comprising a multi-core transmission lead wire, wherein one or some or all of core wires of the multi-core transmission lead wire are mutually insulated.

A bus bar (1) comprises: a laminated conductive wire (20) formed by arranging side by side in the longitudinal direction a first plate-shaped conductive wire (21) formed by spirally winding stripe conductors (11, 12) mutually adjacent in the width direction while bringing the opposing inner surfaces closer to each other, and a second plate-shaped conductive wire (22) formed by spirally winding the stripe conductors (11, 12) in the direction opposite the direction of the first conductive wire (21) while bringing the opposing inner surfaces closer to each other, and overlapping these wires (21, 22) so that the outer surfaces in the width direction face each other; and terminals (30) joined to the first conductive wire (21) and the second conductive wire (22) at both ends of the laminated conductive wire (20).

A shielding wire includes: an electric wire; and a conductive nonwoven fabric tape. The conductive nonwoven fabric tape includes a conductive nonwoven fabric and an adhesive layer. The adhesive layer adheres to the electric wire and adheres to the conductive nonwoven fabric tape that overlaps when wound in a spiral shape. Relationships of: S/tL0.5; and (S1S2)/tL0.25 are satisfied, in which tis a width of the conductive nonwoven fabric tape wound in a spiral shape, L is a length of the conductive nonwoven fabric tape, S is an area of the adhesive layer in the conductive nonwoven fabric tape, S1 is an area of a lapped portion where the conductive nonwoven fabric tape overlaps when the conductive nonwoven fabric tape is wound in a spiral shape, and S2 is an area of the adhesive layer in the lapped portion.

A cable includes: a core wire; a shielding layer covering the core wire; an insulating layer covering the shielding layer; and an outer layer covering the insulating layer; wherein the outer layer is an insulating paint.

A method of manufacturing a noise shield cable, wherein the noise shield cable includes a conductor, an insulation provided around the conductor, a noise shielding layer provided around the insulation and a sheath provided around the noise shielding layer, includes providing an insulating material including a magnetic powder, pressing and then rolling the insulating material to form a sheet, and winding the sheet around the insulation to form the noise shielding layer. An aspect ratio of the magnetic powder represented by a maximum length/a maximum thickness is more than 10.

Cables that include a conductor and an optical fiber. In some embodiments, the cable can include an optical fiber loosely disposed within an enclosure. A conductor layer can be disposed about the enclosure. An insulation layer can be disposed about the at least one conductor layer. An inner layer of armor strength members can be helically disposed about the insulation layer. An outer layer of armor strength members can be helically disposed about the inner layer of armor strength members. The armor strength members in the outer layer of armor strength members can be at an opposite helix compared to the armor strength members in the inner layer of armor strength members. An outer jacket can be disposed about the outer layer. In other embodiments, the cable can include an optical fiber in a coupled electro-optical package, where the conductor layer can be disposed about the electro-optical package.

An insulated electric wire is formed by spirally winding an insulating tape laminating an insulating layer and an adhesive layer onto a conductor such that the adhesive layer is disposed onto the conductor, in which when a conductor diameter is x mm, the insulating tape has an overlap length y of y1.5099ln(x)0.4959 mm, a width z of z0.3774x+24.547 mm, and an adhesive force c of c3.2 N/19 mm with respect to a back surface of the insulating tape which is opposite to the adhesive layer.

A cable includes a wire bundle composed of a plurality of wires bundled together; a binder tape spirally wound around an outer circumference of the wire bundle; a conductive tape having electrical conductivity and spirally wound around an outer circumference of the binder tape; and a sheath covering the binder tape and the conductive tape. The conductive tape is spirally wound around the outer circumference of the binder tape in such a manner that one end and an other end in a width direction do not overlap, a twisting direction of the plurality of wires in the wire bundle and a spiral winding direction of the binder tape are opposite, and the spiral winding direction of the binder tape and a spiral winding direction of the conductive tape are the same. A damage detection device for detecting damage to the cable is configured such that an electric current is applied to the conductive tape and the linear conductor and a damage detection signal indicating that damage has occurred to the cable is output when the electric current is inactive.