Tape 1218
Polyimide Film Tape with Acrylic Pressure-
Sensitive Adhesive for use as Insulation Tape
Data Sheet
Product Description
3M™ Tape 1218 is a one mil polyimide backing with
acrylic adhesive. It is designed for high temperature
applications, in which a solvent resistant backing is
required, used on coils, capacitors and wire harnesses.
•
1 mil polyimide backing
•
Acrylic adhesive
•
Supplied on 3 inch cores
3M Tape 1218 is available in standard and custom
widths and lengths. Standard length is 36 yards.
•
Widths from 1/4” to 23”
•
Longer lengths up to several times normal length,
dependent upon width. Check with Customer
Service.
Applications
3M Tape 1218 is used for high temperature electrical
applications in which a tough, thin insulating material
that is solvent-resistant is required for wrapping coils,
transformers, capacitors and wire harnesses. It is also
used as a cover layer material for many types of flexible
printed circuits.
Typical Properties
Properties
Adhesive
Backing
Total thickness
1
Operating Temperature
Adhesion to Steel
1
Breaking strength
1
Insulation Resistance
1
Elongation
1
(% at break)
Dielectric Breakdown
1
CTI Group
Electrolytic Corrosion Factor
2
Footnote:
1.
Test method ASTM D 1000
2.
3M Test Method-Available on request
Typical Value
Acrylic Pressure Sensitive
Polyimide
3.0 mils / 0.076 mm
180°C (356°F)
19 oz/in (0.50Kg/in)
30 lbs./in (14 Kg/in)
>1 x 10
6
megohms
55 %
6.0 KV
IIb
1.0
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All statements, technical information, and recommendations related to 3M’s products are based on information believed to be
reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is
suitable for your intended application. You assume all risks and liability associated with such use. Any statements related to the
product which are not contained in 3M’s current publications, or any contrary statements contained on your purchase order shall
have no force or effect unless expressly agreed upon, in writing, by an authorized officer of 3M.
Warranty; Limited Remedy; Limited Liability.
This product will be free from defects in material and manufacture for a period of
one (1) year from the time of purchase.
3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
If this product is defective within
the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the
purchase price of the 3M product.
Except where prohibited by law, 3M will not be liable for any indirect, special, incidental or
consequential loss or damage arising from this 3M product, regardless of the legal theory asserted.
Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
800-626-8381 Fax 800-828-9329
www.3M.com/electrical
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