Effective EMI Shielding Contributes Industries Development
Shelter is critical important in military to be used as weapons and equipment system, command and communication center and high shielding shelter, stealth shelter, bulletproof shelter, explosion-proof shelter and so on. But the traditional metal shelter has been replaced with composite materials.
Composite shelter can reduce 50% to 70% weight for Maneuverability. But it needs to be added shielding material (micro expanded metal).
High precision expanded metal mesh (micro expanded metal mesh) has light and integrated structure, uniform surface, stable continuous opening and customizable flexibility. The most important is, the precious expanded metal has excellent EMI shielding performance to supply excellent shielding performance and make up for the deficiency
Besides, the micro expanded metal has been used as shielding material in aerospace, electronics and other fields.
Why PEMPL Solutions are Optimal For EMI Shielding
The PEMPL Micromesh EM series of expanded metal foils are versatile, effective materials for shielding against electromagnetic interference (EMI). Expanded metal foils are formed from solid metal foil in a proven, economical “slit-and-stretch” process. They are electrically continuous and, unlike knit or woven meshes, exhibit consistent and predictable conductivity.
Thin, strong, flexible and lightweight, expanded metal foils will not fray or unravel, and conform readily to complex surfaces, making them well-suited to composite manufacturing processes.
Standard configurations include copper, aluminum, nickel and Monel meshes at .002 and .003″ thick (50 and 75µm). PEMPL can readily produce custom types using other metals and foil thicknesses, including Cu and Al types down to .001″ (25µm). The open area of the mesh can be precision-tailored to meet user requirements for weight, resistivity, formability and shielding effectiveness.
Extensive range of materials
PEMPL offers a standard line of expanded metal foils for EMI shielding.
Custom tailored
PEMPL Micromesh EM series of expanded foils are designed to cover most shielding applications, and serve as a “starting point” for custom designs tailored to user requirements.
Tested & Verified
All material is tested using ASTM D4935-10 test standards that yield verifiable and accurate SE values that agree well with theory, with customer-reported results, and with measurements by independent laboratories.
Shielding Effectiveness
PEMPL expanded foils retain the desirable properties of the materials from which they are formed. In the case of metals like copper and aluminum, this includes excellent shielding properties.
The key measure of merit for EMI shielding materials is “shielding effectiveness”. Shielding effectiveness is a measure of how well a material reduces (attenuates) electromagnetic field strength.
The SE of expanded metal foils is dependent on several factors, including:
- Material type
- Foil thickness
- Size of openings
- Openings per unit area
These parameters can be controlled during manufacturing to yield meshes custom-tailored for weight, resistivity and shielding effectiveness.
Flexible and conformable, they are excellent for components, enclosures and gaskets.
Materials
EMI shielding mesh is available in various materials, including copper, aluminum, nickel, Monel, etc. Copper is the most widely used type. And all our copper content of micro expanded metal shielding mesh is ≥99.7% (economical) and ≥99.9% (best shielding performance) and all of them comply with RoHS standard.
Specifications
- Material: copper, aluminum, nickel, Monel or others.
- Standard thickness: 0.002″ (50 μm) or 0.003″ (70 μm)
- Mesh type: diamond-shaped hole patterns.
Features
- Integrated structure will not be loose
- Good electrical conductivity
- Heat resistance
- Non-magnetic
- Corrosion resistance
- Uniform surface supplies even shielding performance
Application
- Cable Shielding
- Gaskets
- Cockpit Electronics
- Military and government agencies
- Scientific research
- High-frequency medical equipment
- High-tech anti-electromagnetic interference engineering
- Aerospace
- Telecommunication
- Other aspects of electromagnetic shielding
