3
Low Outgassing Polyester Tape
8333
Technical Data
October, 2005
Supersedes September, 1998
Product Description
A metalized polyester tape ideal for the demanding requirements of hard disk drive
and related electronics manufacturing. The 1 mil metalized polyester backing offers
low static and low diffusivity, complimented with a low outgassing, acrylic adhesive.
This product offers a high level of permanence, yet is cleanly removable from most
substrates even after extended heat treatments.
Construction
Backing
Metalized Polyester
Adhesive
Acrylic
Color
Silver
Typical Physical
Properties and
Performance
Characteristics
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
ASTM Test Method
Adhesion to Steel:
Initial
After 30 hrs @ 72°F
After 30 hrs @ 120°F
After 30 hrs @ 150°F
Adhesion to Aluminum:
Initial
After 30 hrs @ 72°F
After 30 hrs @ 120°F
After 30 hrs @ 150°F
Shear Strength:
0.5 in. x 0.5 in. w/1000 gm load
Mechanical Performance:
Tensile Strength
Elongation @ Break
Yield Point (%)
Yield Point (lbs./in.)
Caliper:
Backing
Adhesive
Total
Static
1
:
NASA Outgassing:
Total Mass Loss (TML)
Condensable Materials (CVCM)
Water Vapor Recovered (WVR)
D-3330
31 oz./in.
34 oz./in.
38 oz./in.
42 oz./in.
D-3330
29 oz./in.
30 oz./in.
34 oz./in.
39 oz./in.
D-3654
> 200 min.
D-3659
27 lb./in.
120%
10%
16 lb./in.
D-3652
1.0 mil
1.0 mil
2.0 mil
< 100 volts
E-595
0.43%
0.05%
0.21%
3M
™
Low Outgassing Polyester Tape
8333
Typical Physical
Properties and
Performance
Characteristics
(continued)
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
ASTM Test Method
Outgassing by Headspace GC Analysis
2
(units = µg/cm
2
)
Hydrocarbons
< .05 µg/cm
2
Acrylates
< .20 µg/cm
2
Organic Acids
< .05 µg/cm
2
Alcohols & Esters
< .05 µg/cm
2
Siloxanes
< .02 µg/cm
2
Anions by Ion Chromatography (units = ng/cm
2
)
Fluoride
not detected
Chloride
< 50 ng/cm
2
Nitrite
not detected
Bromide
not detected
Nitrate
not detected
Phosphate
not detected
Sulfate
not detected
1
Static
D-4526
3
= Residual voltage on surface of tape after unwind @ 12 in./min. as measured by 3M Model 709
static sensor.
2
Outgassing = Dynamic headspace analysis of volatile components collected during a 4 hr @ 80°C heat
cycle using a Hewlett-Packard Model 5890 Series II gas chromatograph coupled with a Hewlett-Packard
Model 5989B mass spectrometer.
3
ASTM test method modified per footnote #2 above.
Application Ideas
• Temporary porthole sealing of hard disk drive clamshells.
• General purpose cleanroom applications.
• Other applications which require a low outgassing polyester film tape.
Key Attributes
Features
• 1 mil metalized
polyester backing
Advantages
• Thin, high strength
• Bleeds static charge rapidly
Benefits
• Helps reduce breakage
• Helps reduce risk of product
damage due to electrostatic
discharge
• Effective contamination barrier
• Effective barrier for water
vapor
• Helps reduce risk of chemical
contamination
• Helps reduce risk of chemical
contamination
• Eliminate cleanup of substrate
materials during rework
operations
• Adhesive has good tack
properties for easy application
• Adhesive stable over long
periods of time
• Low diffusivity
• Low water vapor
transmission rate
• High purity
acrylic adhesive
• Low outgassing
• Low extractable ionic
content
• Clean removability from a
wide variety of substrate
materials
• Excellent initial adhesion
• Long aging
-2-
3M
™
Low Outgassing Polyester Tape
8333
General Information
• Best resulted obtained using firm rubdown pressure on clean, oil-free substrate
materials.
• Dimensionally stable over temperature range from -60°F to 300°F (-51°C to 149°C).
• Standard packaging includes plastic cores and individual plastic bags.
• Shear performance decreases with increasing temperature.
Shelf Life
18 months from manufacture of material if properly stored at 60-80°F (16-27°C) and
40-50% relative humidity.
For Additional
Information
To request additional product information or to arrange for sales assistance, call toll free 1-800-251-8634.
Address correspondence to: 3M Electronics Markets Materials Division, Building 21-1W-10, 900 Bush
Avenue, St. Paul, MN 55144-1000. Our fax number is 651-778-4244 or 1-877-369-2923. In Canada,
phone: 1-800-634-3577. In Puerto Rico, phone: 1-787-750-3000. In Mexico, phone: 52-70-04-00.
Product Use
All statements, technical information and recommendations contained in this document are based upon
tests or experience that 3M believes are reliable. However, many factors beyond 3M’s control can affect
the use and performance of a 3M product in a particular application, including the conditions under
which the product is used and the time and environmental conditions in which the product is expected to
perform. Since these factors are uniquely within the user’s knowledge and control, it is essential that the
user evaluate the 3M product to determine whether it is fit for a particular purpose and suitable for the
user’s method of application.
Warranty and
Limited Remedy
Unless stated otherwise in 3M’s product literature, packaging inserts or product packaging for individual
products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the
product. Individual products may have additional or different warranties as stated on product literature,
package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF
DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining whether the 3M product
is fit for a particular purpose and suitable for user’s application. If the 3M product is defective within the
warranty period, your exclusive remedy and 3M’s and seller’s sole obligation will be, at 3M’s option, to
replace the product or refund the purchase price.
Limitation of Liability
Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the
3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory
asserted, including warranty, contract, negligence or strict liability.
3
3M Electronics
3M Center, Building 21-1W-10, 900 Bush Avenue
St. Paul, MN 55144-1000
1-800-251-8634 phone
651-778-4244 fax
www.3M.com/electronics
Recycled Paper
40% pre-consumer
10% post-consumer
Printed in U.S.A.
©3M 2005 60-5002-0096-3
(10/05)
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