Cable and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11076515-B1
Application number	US-202016901390-A
Country	US
Kind code	B1
Filing date	Jun 15, 2020
Priority date	Mar 24, 2020
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A cable includes a wire and an electromagnetic shielding layer. The electromagnetic shielding layer covers the wire. The electromagnetic shielding layer is in the form of fiber mesh, including a conductive polymer. A manufacturing method includes: feeding the conductive polymer, melting the conductive polymer, extruding the molten conductive polymer to form a plurality of conductive polymer fibers, covering the wire with the plurality of conductive polymer fibers, and curing the plurality of the conductive polymer fibers to form the electromagnetic shielding layer covering the wire. The electromagnetic shielding layer of the cable of the present application replaces current aluminum foil shielding and metal shielding for conventional wires, decreasing interference by electromagnetic waves produced by electromagnetic induction on electronic devices nearby.

First claim

What is claimed is:

1. A cable, comprising:
a wire; and
an electromagnetic shielding layer covering the wire; the electromagnetic shielding layer being in the form of fiber mesh; the electromagnetic shielding layer comprising a conductive polymer;
wherein the conductive polymer comprises polypropylene; the conductive polymer is doped with conductive particles; and
wherein the conductive polymer further comprises polyester, acrylic acid, polyamide, and viscose fiber, and the polypropylene weighs 60% to 64% of the conductive polymer; the polyester weighs 20% to 24% of the conductive polymer; the acrylic acid weighs 0.5% to 2% of the conductive polymer; the polyamide weighs 0.5% to 2% of the conductive polymer; the viscose fiber weighs 2% to 6% of the conductive polymer.

2. The cable according to claim 1 further comprising a protective outer layer covering the electromagnetic shielding layer.

3. A manufacturing method of a cable, the cable comprising
a wire; and
an electromagnetic shielding layer covering the wire; the electromagnetic shielding layer being in the form of fiber mesh; the electromagnetic shielding layer comprising a conductive polymer;
wherein the conductive polymer comprises polypropylene; the conductive polymer is doped with conductive particles; and
wherein the conductive polymer further comprises polyester, acrylic acid, polyamide, and viscose fiber, and the polypropylene weighs 60% to 64% of the conductive polymer; the polyester weighs 20% to 24% of the conductive polymer; the acrylic acid weighs 0.5% to 2% of the conductive polymer; the polyamide weighs 0.5% to 2% of the conductive polymer; the viscose fiber weighs 2% to 6% of the conductive polymer,
the manufacturing method of the cable comprising:
feeding the conductive polymer;
melting the conductive polymer;
extruding the molten conductive polymer to form a plurality of conductive polymer fibers;
covering the wire with the plurality of conductive polymer fibers; and
curing the plurality of the conductive polymer fibers to form the electromagnetic shielding layer covering the wire.

4. The manufacturing method according to claim 3 , wherein the step of feeding the conductive polymer further comprises doping the conductive particles into the polypropylene to form the conductive polymer.

5. The manufacturing method according to claim 3 , further comprising covering the electromagnetic shielding layer with a protective outer layer.

6. The manufacturing method according to claim 3 , wherein in the step of extruding the molten conductive polymer to form the plurality of conductive polymer fibers, the conductive polymer is extruded into the plurality of conductive polymer fibers in a form of filament; and then the plurality of conductive polymer fibers are cooled.

7. The manufacturing method according to claim 6 , wherein after the step of extruding the plurality of conductive polymer fibers in the form of filament, the plurality of conductive polymer fibers is laid into a mesh.

8. The manufacturing method according to claim 7 , wherein the step of laying the plurality of conductive polymer fibers into a mesh further comprises hot-pressing and curling the mesh of the conductive polymer fibers.

Assignees

• Luxshare Precision Industry Co Ltd

Inventors

• Li Huabing
• Huang Yu

Classifications

• H01B13/24 Primary

  by extrusion {(extrusion of cables with plastic material in general B29C48/15)} · CPC title

• H01B13/228

  After-treatment · CPC title

• H01B7/17 Primary

  Protection against damage caused by external factors, e.g. sheaths or armouring · CPC title

• H05K9/0098 Primary

  for shielding electrical cables · CPC title

• H01B1/24

  the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title