ASTM D3611-89(1998)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 3611 – 89 (Reapproved 1998)
Standard Practice for
Accelerated Aging of Pressure-Sensitive Tapes
This standard is issued under the fixed designation D 3611; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Summary of Practice
1.1 This practice provides one environment in which to 4.1 The pressure-sensitive tape is exposed to an atmosphere
expose finished pressure-sensitive tape material for the purpose of 80 % relative humidity at 150°F (66°C) for a period of 96 h.
of accelerating the aging of it. It is applicable to tape in roll Following a period for returning to a standard atmosphere, the
form when the user observes the precautions detailed within tape is ready for a prescribed examination using a method such
the procedure. The practice does not provide for a conclusion as Test Methods D 3330/D 3330M.
within itself, but is for use in conjunction with appearance or
5. Significance and Use
physical property tests to follow the accelerated exposure.
While this practice was developed using packaging type tapes, 5.1 This practice accelerates the natural aging of pressure-
sensitive tapes so that the response to the usual physical
its use on other types of tape with similar construction is
encouraged. It is not intended for use on electrical grade tapes property tests changes to the same extent as with an exposure
to at least 2 years of natural aging when compared with the
(see Test Methods D 1000).
1.2 This standard does not purport to address all of the response to tests before aging.
5.1.1 Natural aging in this context means a continuous
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- period of aging of tape in a closed fibreboard container (in
darkness) in the variable climate of either the warm moist
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. south, the warm dry southwest or the moderate midcontinent,
USA.
2. Referenced Documents
5.2 The extent of change for one physical property should
2.1 ASTM Standards: be expected to be different than for another property and so
D 996 Terminology of Packaging and Distribution Environ- would also relate to different natural aging time.
ments 5.3 An abnormal product lot may cause differences in
D 1000 Test Methods for Pressure-Sensitive Adhesive- testing response that throw off the expected time patterns.
Coated Tapes Used for Electrical and Electronic Applica- 5.4 Appearance of normal tape product will usually change
tions only slightly on two years natural aging. This accelerated
D 3330/D 3330M Test Methods for Peel Adhesion of exposure usually produces an exaggerated change in appear-
Pressure-Sensitive Tape at 180° Angle ance which would be seen under natural conditions only in
D 3715/D 3715M Practice for Quality Assurance of abnormal product.
Pressure-Sensitive Tapes 5.5 There is no present experience to relate this accelerated
D 4332 Practice for Conditioning Containers, Packages, or exposure to responses of tape in applications where the tape is
Packaging Components for Testing under a use stress.
3. Terminology 6. Interferences
3.1 Terminology found in Terminology D 996 shall apply. 6.1 The environment for this practice cannot occur unless
the vessel used as the environment container is vented so that
pressure differences between the inside and the outside of the
This practice is under the jurisdiction of ASTM Committee D-10 on Packaging
vessel can be balanced.
and is the direct responsibility of Subcommittee D10.14 on Closure and Reinforce-
6.2 The environment in the vessel is dependent on careful
ment.
Current edition approved Dec. 29, 1989. Published February 1990. Originally
observation of the requirements of loading in relationship to
published as D 3611 – 77. Last previous edition D 3611 – 77 (1986).
vessel volume and liquid surface area in accordance with
Annual Book of ASTM Standards, Vol 15.09.
Section 7.
Annual Book of ASTM Standards, Vol 10.01.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 3611 – 89 (1998)
7. Apparatus 9.3 When no other sampling requirement is applicable,
sampling should be as set forth in Practice D 3715/D 3715M.
7.1 Vessel, to contain a solution of ammonium sulphate and
tape undergoing exposure. The vessel must meet the following
10. Sample
requirements:
10.1 The sample should consist of rolls of tape.
7.1.1 Vented to allow equilibrium with an opening not to
10.1.1 The quantity of tape in any sample roll need not be
exceed 0.01 mm.
more than necessary to supply the specimens for the physical
7.1.2 The air volume over the solution to be not more than
property tests to follow the exposure.
10 % greater than the cube of the square root of the liquid
10.1.2 No sample roll should be less than ⁄2 in. (12 mm) in
surface area.
width.
7.1.3 The air depth of the vessel to the liquid surface to be
10.1.3 Sample rolls should be originally wound, not re-
not more than 10 % greater than the square root of the liquid
wound rolls.
surface area.
7.1.4 A desiccator assembly with a perforated plate can be a
11. Procedure
suitable vessel.
11.1 Place the sample rolls above the solution in the vessel
7.2 Oven, of the forced-convection type maintained at a
so that roll edges lie in a horizontal plane (parallel with the
mean of 150 6 2°F (66 6 1°C).
liquid surface).
8. Reagents
11.1.1 Include no more sample rolls than will displace one
8.1 Purity of Reagents—Reagent grade chemicals shall be
fourth of the air volume in the vessel.
used in all tests. Unless otherwise indicated, it is intended that
11.1.2 Arrange the sample rolls so that all surfaces are
all reagents shall conform to the specification of the Committee
exposed to the humid air in the vessel. Use separators that
on Analytical Reagents of the American Chemical Society,
allow free air space around and between the rolls and which are
where such specifications are available. Other grades may be
non-hygroscopic.
used, provided it is first ascertained that the reagent is of
11.2 Close the assembly and place in the oven.
sufficiently high purity to permit its use without lessening the
11.2.1 Assure that care is taken to prevent the solution from
accuracy of the determination.
wetting any part of the assembly (including tape), other than
8.2 Ammonium Sulfate (NH ) SO .
the reservoir it occupies, when the as
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