CN 4190
Double coated Cu/Ni Mesh Tape
Product Description
3Μ™ CN 4190 double-coated Cu/Ni mesh tape
consists of Copper and Nickel coated conductive
mesh and unique electrically conductive pressuresensitive
acrylic adhesive.
• Cu/Ni coated conductive mesh
• Conductive acrylic adhesive
• Supplied on a removable liner for easy
handling and die-cutting
Like all 3M shielding tapes, 3M CN 4190 Double
coated Cu/Ni mesh tape are available in standard
and custom widths and lengths. Standard length is
50M.
• Widths from 6mm to 500mm
• Longer lengths up to several times normal
length, dependent upon width. Check with
Customer Service.
Applications
3M CN 4190 double coated Cu/Ni mesh tape is
typically used in many applications typically
served by metal foil shielding tapes such as
grounding and EMI shielding in equipment,
components, shielded rooms, etc.
The unique mesh backing offers the additional
benefits of excellent flexibility and conformability,
very light weight, and exceptional strength. The
fabric backing also minimizes the possibility of
finger lacerations.
Shielding Effectiveness
Many factors determine the true shielding
effectiveness of a shielding tape, including type
and thickness of foil, adhesive type, intimacy of
contact, smoothness of application surface,
strength and frequency of the EMI signal, etc.
However, using standard tests and fixtures, it is
possible to determine a value for the attenuation.
For 3M CN 4190 double-coated Cu/Ni mesh tape,
typical shielding effectiveness is in the range of
65dB to 70dB
CN 4190 Double Coated Cu/Ni Mesh Tape – Typical Properties
Properties Typical Value
Type of Backing Copper/Nickel coated conductive mesh
Type of Adhesive Conductive acrylic adhesive
Total thickness (backing plus adhesive) 0.115mm
Breaking strength 1 16 kgf/25mm (40 lb/in)
Adhesion strength 1 1200gf/25mm (31 oz/in)
Electrical resistance through adhesive 2 0.05Ω
* Foot note 1. Test method ASTM D 1000
2. MIL-STD-202 Method 307 maintained at 5 psi (3,4N/cm2) measured over in2 surface
area. Conductive particles in the adhesive provide the electrical path between the
application substrate and the foil backing.