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T1767 - Polyester Adhesive on Polyester Film
DESCRIPTION
T1767 is a family of Sheldahl engineered adhesives on polyester films for the
manufacture of flat conductor cables. These tapes can be provided with various
combinations of adhesive thickness and polyester film thickness.
FEATURES
These tapes have been specifically formulated for fabricating flexible flat conductor
cables, or a coverlay for flexible circuitry.
T1767
cables can be designed as a rolled up cable or accordion folded.
Flat conductor cables are a lightweight, cost effective interconnection for circuitry
applications.
The high temperature adhesive system has allowed solder coating of cable leads without
delamination in certain processes.
T1767
products can be heat sealed with a hot nip roll at 350°F + 10°F, 80 -
100 psi or platen pressed at 275°F - 300°F, 100 - 200 psi for 10 minutes and cooled
under pressure to 100°F.
Manufactured under a statistically controlled process
(SPC).
Shelf Life: 6 months when stored at 70°F, 50%
R.H. Longer if stored at lower
temperatures and lower humidities.
Sheldahl manufactures a broad range of flexible laminates and insulating materials. Ask
for data bulletins describing other Sheldahl products.
T1767 - POLYESTER
ADHESIVE ON POLYESTER FILM
PROPERTY
TO BE TESTED AND TEST METHOD |
TYPICAL
DATAA |
Peel strength, minimum,
lb./in. - width
IPC-TM-650, Method 1.4.9
As received . . . . . .
Method A or Method B
|
8.0 |
| Tensile strength,
minimum, lb./square inch, ASTM-D-882 |
24,000 |
| Elongation, minimum
percent, ASTM-D-882 |
90 |
| Initial Tear Strength,
minimum gms, IPC-TM-650, Method 2.4.16 |
800 |
| Dimensional Stability,
maximum, percentage, IPC-TM-650, Method 2.2.4, Method A |
0.45B |
| Flow, maximum (squeeze
out in mils), IPC-TM-650, Method 2.3.17.1 |
10 |
| Volatile Content
(maximum percent), IPC-TM-650, Method 2.3.37 |
1.5 |
| Chemical Resistance
Percentage, IPC-TM-650, Method A |
70* |
| Dielectric Constant,
maximum (at 1MHz), IPC-TM-650, Method 2.5.5.3 |
3.4C |
| Dissipation Factor,
maximum (at 1mhz), IPC-TM-650, Method 2.5.5.3 |
0.02C |
| Volume
Resistivity,
minimum megohms-cm, IPC-TM-650, Method 2.5.17 |
107
C |
| Surface Resistance,
minimum, megohms, IPC-TM-650, Method 2.5.17 |
103
C |
| Dielectric Strength,
minimum volts/mil |
2 mil
= 5000
3 mil = 4800
4 mil = 4200
5 mil = 3900 |
| Moisture Absorption,
maximum, percent, IPC-TM-650, Method 2.6.2 |
0.4 |
| Tensile Modulus
(psi),
ASTM-D-882 |
440,000 |
A
Sheldahl does not gurantee, nor will
it accept obligation or liability based on the use of this data. Data subject to change
without notice.
B
Does not include 1 mil film.
C
Based on 1.5 mil adhesive x 2 mil polyester film.
* Except chlorinated solvents and keytones.
For minimum design requirements, consult factory.
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