3M emirfi shielding of seams and apertures Benutzerhandbuch
Application Profile
3M Industrial Business
PRODUCT
3M
™
Aluminum Foil Tapes 425
and 431 (Linered)
3M
3M
™
Aluminum Foil Tapes 427
and 439 (Non-linered)
Key Application Requirements
Effective, economical shielding of seams and apertures in many shielded
rooms. (First determine if a moderate level of shielding will work and if roll
goods or die-cuts are preferred.)
rooms. (First determine if a moderate level of shielding will work and if roll
goods or die-cuts are preferred.)
EMI = Electromagnetic Interference: Any undesired disturbance, either radiated
or conducted, that degrades the proper operations of electrical or electronic
equipment. EMI occurs when the operating frequency of one device overlaps
that of another. Shields, like metals or metal foil tapes, block radiated energy
and keep signals either inside or out.
or conducted, that degrades the proper operations of electrical or electronic
equipment. EMI occurs when the operating frequency of one device overlaps
that of another. Shields, like metals or metal foil tapes, block radiated energy
and keep signals either inside or out.
RFI = Radio Frequency Interference: EMI that occurs in those frequency bands
occupied by the majority of radio and other communication signals.
occupied by the majority of radio and other communication signals.
Benefits/Advantages To Customer
Application: Linered tapes are faster and easier to apply than many other
typical shielding materials.
typical shielding materials.
Die-cuts: Linered tapes allow precise die-cuts for difficult shielding operations.
Aluminum foil backing: Durable, chemically resistant, electrically conductive
backing provides shielding for electrical interference.
backing provides shielding for electrical interference.
Acrylic adhesive: A long-life permanent adhesive.
EMI/RFI shielding: These tapes provide a moderate (25 db at 100 MHz)
shielding effectiveness.
shielding effectiveness.
Market: Electronics
Application Description: EMI/RFI shielding of seams and apertures.
Application Description: EMI/RFI shielding of seams and apertures.