Shielding & Design of Metal Woven Mesh

EMI radiation shielding is a technology that prevents EMI waves from causing harm to humans and electronic devices. There are many sources of EMI radiation, such as cell phones, wireless networks, and microwave ovens. These devices may produce high-intensity EMI radiation, which may adversely affect human health or interfere with the normal operation of electronic devices. metal woven mesh is a commonly used EMI radiation shielding material, which has excellent shielding properties and can reflect, absorb, or scatter EMI waves.

When EMI waves meet with metal woven mesh, they will be deflected and generate heat in the metal wires. Metal woven mesh absorbs this heat and disperses it throughout the weave. Boedon can provide you with the best woven mesh solutions and share our experience and knowledge in the field of woven mesh to help you make informed decisions and take full advantage of the full capabilities of metal woven mesh.

What Is EMI Shielding?

EMI radiation shielding is the act of preventing harmful radiation from harming humans and various objects through the use of shielding agents such as lead, concrete, woven wire, etc.

  • Term
    • EMI (EMI Interference), i.e. electronic components of external interference.
    • EMS (EMI Susceptibility), i.e. EMI waves act with electronic components, resulting in interference.
    • EMC (EMI Compatibility), i.e. EMI compatibility, refers to electronic equipment that does not interfere with other equipment, equipment, or systems that should be able to operate normally in the EMI environment in which it is located, without causing interference to other equipment around it.
  • Application
    • Daily living environment
    • Science laboratory
    • Medical X-ray equipment
    • Nuclear power plants
What Is Metal Woven Mesh?

Metal woven mesh is a common EMI shielding material, which consists of metal wires intersecting each other and woven into a metal screen surface. This mesh structure can effectively absorb or reflect the surrounding EMI waves, thus reducing the interference of EMI radiation on the surrounding environment and equipment. Metal woven mesh is commonly used in the manufacture of housings or packaging materials for electronic devices to protect devices from external EMI interference. In addition, metal woven mesh can also be used to make EMI shielding chambers or shields to protect specific areas from EMI waves.

Material, wire diameter, mesh count, weaving type, and other parameters of metal woven mesh can be customized according to your applications, such as sieving and filtration.

How Does Metal Woven Mesh Shield Against EMI Radiation?

Metal woven mesh is particularly effective for EMI radiation shielding because it reflects and absorbs EMI energy. For this reason, metal woven mesh is often used for radiation shielding in a variety of electronic and communications equipment. This is because, in terms of the wavelengths of EMI radiation, the openings in the metal woven mesh are usually woven to a much smaller size than these waves, which causes the radiation waves to reflect off the surface of the mesh. In other words, metal woven mesh blocks our electronic and communication devices, protecting them from potentially harmful EMI energy.

When these EMI waves come into contact with the mesh surface, some of the EMI energy is converted into heat. This heat is absorbed into the metal wires and dispersed throughout the weave. In addition, EMI waves are scattered when they come into contact with the braided wire shielding, which means that the strength of the EMI energy bouncing off or through the mesh is reduced. As a result, woven mesh provides highly effective EMI radiation shielding to protect the surrounding environment and equipment.

How to Design a Woven Mesh That Meets the Needs?

Aperture size, thickness, wire diameter, and material of metal woven mesh are key factors that affect the material's ability to shield against radiation.

  • Aperture size. It should be smaller than the EMI waves, helping to create an effective barricade.
  • Woven mesh thickness. The thicker the woven metal mesh, the greater the ability to scatter EMI waves.
  • Wire diameter. The thicker the wire diameter, the better the heat captured and dissipated (the thicker the wire diameter increases the mesh's ability to absorb EMI radiation).
  • Material. In terms of EMI radiation shielding, copper and aluminum woven mesh are widely used, and the conductive properties of the alloy help promote the effective reflection and absorption of EMI waves.
Copper Woven Mesh Display
Copper woven wire mesh production workshop display

Production workshop

Measure the mesh count of copper woven mesh with warp and weft density mirror

Mesh count measurement

Measure the width of copper woven mesh with a tape measure

Width measurement

A piece of 300 mesh count copper woven mesh on white paper

300 mesh count copper woven mesh