1181 Tap e
Copper Foil with Conductive Adhesive
Data Sheet
Product Description
3M 1181 Ta pe consists of a 1-ounce
deadsoft copper foi l backi ng and a unique
electrically conductive pressure-sensitive
acr yl ic ad h es ive.
• Deadsoft 1-ounce c opper foil bac ki ng
• Conductiv e ac ryl i c adhe si ve
• Supplied on a rem ova ble liner for easy
handl i ng and diecutting
Like al l 3M shieldi ng tape s, 3M 1181 is
ava i la bl e in standa rd and custom widths a nd
le ngths. Standard length is 18 yards.
• Widths f rom 1/ 4” to 23”
• Longer lengths up to seve ral times normal
le ngth, depende nt upon w i dth. Check with
Customer Service.
Applications
3M 1181Ta pe is typically used for
appl ications requir i ng exce l lent el ectr i ca l
conduc tivi ty from the application substrate
through the adhe si ve to the f oil bac ki ng.
Common uses include groundi ng and EMI
shie l di ng i n equi pme nt, components, shielded
rooms, etc. The copper foil backing is
solde rable and resists ox i dation and
discoloration.
Shielding Effectiveness
Many fac tors dete r mi ne the true s hiel d i ng
effectiveness of a shielding tape, including
type and thic kness of f oil, adhesive type,
intimacy of c ontact, smoothness of
appl ic ation surfac e, str e ngth and frequency of
the EMI si gnal , e tc. Howeve r , using standard
tests and fixtures, it is possible to determine a
value for the attenuati on.
For 3M 1181 Tape, typica l shielding
effectiveness (far field) is in the range of 60dB
to 80dB (30 MHz to 1 GHz).
Properties Typical Values
Ba c king thickness 11. 4 mil (0,04mm)
Total thickn ess (backing plus adhesive) 22.6 mi l (.066mm)
Breaking strength 1 25 lb./in (44 N/10mm)
Adhesion to steel 1 35 oz/in (3,8 N/10mm)
Electrical resistance through adhesive 2 0.005 ohm
Flame retard anc y 3 Pass
* Footnote: 1. Test meth od AS TM D 1000
2. MIL-STD-202 Method 3 07 maintained at 5 psi (3, 4 N/cm2) measured over 1 in2 surface area. Conductive particles in the adhesive
provide the electrical path between the application substrate and the foil backing.
3. UL-r ecognized fo r flame ret ardancy pe r UL 510, Product Category 0AN Z2, F il e E17385.
3M is a trademark of 3M.
Important Notice
All statements, tech nical informatio n and recomm endations
related to the Seller’s products are based on information
believed to be reliable, but the accuracy or completeness
thereof is not guaranteed. Before utilizing the product, the
user should determine the suitability of the product for its
intended use. Th e user assumes all risks and liability
whatsoever in connection with such use.
Any statements or recommendations of the Seller which are
not contained in the Seller’s current publications shall have
no force or effect unless contained in an agreement signed
by an authorized officer of the Seller. The statements
contained herein are made in lieu of all warranties,
expressed or implied, including but not limited to the implied
warr a nt ies of mer cha nta bility an d fitnes s for a par t ic ul ar
purpose which warranties are hereby expressly disclaimed.
SELLER SHALL NOT BE LIABLE TO THE USER OR ANY
OTHER PERSON UNDER ANY LEGAL THEORY,
INCLUDI NG BUT NOT LIMITED TO NEGLIGENCE OR
STRICT LIABILITY, FOR ANY INJURY OR FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES SUSTAINED OR
INCURRED BY REASON OF THE USE OF ANY OF THE
SELLER’S PRODUCTS THAT WERE DEFECTIVE.
Electrical Product s Division
6801 R iver Place Blvd.
Aust in , TX 78726-9000
800 676 8381
http://www.3m.com/elpd © 3M 1998
78-8124-4702-3
