MRI "A" Fabric
Laird Technologies MRI "A" Fabric is an EMI/RFI shielding product that is manufactured using a patented, proprietary technology. The base layer is a metallized non-woven fabric plated with highly conductive copper and nickel for corrosion resistance. This is bonded to a thin layer of solid aluminum. The resulting material is a lightweight architectural material with superior shielding effectiveness and outstanding resilience in excess of industry standards throughout the MRI frequency range.
This product can be applied using several standard construction techniques depending upon the installation requirements or specifications. Because of the relative ease of installation, construction time and therefore, the time to get the MRI facility on-line is greatly reduced.
Features and Benefits
- Flexible and lightweight
- Corrosion resistant and highly conductive
- Provides excellent shielding
- Excellent electrical properties
- Fewer seams required
Physical Properties
Substrate |
Metal |
Thickness (ASTM D1777) |
Total Weight oz./yd² |
Maximum Short Duration Temperature (g/m²) |
Standard Roll Width |
Composite Polyester Non-Woven Fabric and Foil |
Fabric: Nickel/Copper Foil: Aluminum |
0.016 +/-0.002 (406 +/- -51) |
7.5 +/- 1.3 (254 +/- 44) |
194°F
(90°C) |
51 inches
(130 cm) |
Electrical Properties
Surface Resistivity ASTM F390 ohms/square |
| <0.07 |
Shielding Effectiveness dB (Typical)
25.4 MHz |
64 MHz |
100 MHz |
168 MHz |
400 MHz |
>108* |
>115* |
>122* |
>115* |
>107* |
* Values exceed the dynamic range of the test equipment and were measured in actual MRI shielded enclosures
Mechanical Properties
Tensile Strength CMD/MD (ASTM D5035) lb./in (N/100mm) |
Elongation, MD (ASTM D5035) |
20/60 (350/1050) |
8% |
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