ASTM D3816/D3816M-96(2003)
(Test Method)Standard Test Method for Water Penetration Rate of Pressure-Sensitive Tapes
Standard Test Method for Water Penetration Rate of Pressure-Sensitive Tapes
SCOPE
1.1 This test method provides one procedure for measuring the water penetration rate of 2-in. or wider pressure-sensitive tape.
1.2 The values stated in either SI or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently, without combining values in any way.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D3816/D3816M–96 (Reapproved 2003)
Standard Test Method for
Water Penetration Rate of Pressure-Sensitive Tapes
This standard is issued under the fixed designation D 3816/D3816M; 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 5. Significance and Use
1.1 This test method provides one procedure for measuring 5.1 The results of this test method will indicate the relative
the water penetration rate of 2-in. or wider pressure-sensitive permeability by water of the tape through its smallest dimen-
tape. sion (generally normal to the tape’s backing).
1.2 The values stated in either SI or inch-pound units are to 5.1.1 The pathway for the water parallel to the adhesive-cup
be regarded separately as standard. The values stated in each interfaceisgreatcomparedtothetape’sthicknessandthelatter
system may not be equivalent; therefore, each system must be is usually the nearly exclusive source of transmitted water.
used independently, without combining values in any way. 5.1.2 Some tape types allow a relatively free path in a
1.3 This standard does not purport to address all of the direction normal to the backing or along backing pathways
safety concerns, if any, associated with its use. It is the parallel to the adhesive-cup interface, allowing the adhesive to
responsibility of the user of this standard to establish appro- become the principal barrier.
priate safety and health practices and determine the applica- 5.2 If the adhesive does not continue to adhere to the cup
bility of regulatory limitations prior to use. flange during the exposure periods, allowing unintended path-
waysforwatertooccur,themeasurementshouldbeconsidered
2. Referenced Documents
as not having been made. Consequently, the tape might be
2.1 ASTM Standards: considered as being inappropriate for use on surfaces like the
D 996 Terminology of Packaging and Distribution Environ-
cup flange under moisture conditions approximating those of
ments the test.
D 3715/D 3715M Practice for Quality Assurance of
NOTE 1—It may be that the interest is simply in the tape material as a
Pressure-Sensitive Tapes
water barrier. In this case how well the tape adheres to the cup flange may
D 4332 Practice for Conditioning Containers, Packages, or
be of little consequence and steps to prevent any edge effects are in order.
Packaging Components for Testing
These are referred to in Section 10.
E 122 Practice for Calculating Sample Size to Estimate,
6. Apparatus
With a Specified Tolerable Error, the Average for a
Characteristic of a Lot or Process 6.1 Test Cups, made from materials that are nonhygro-
scopic.The cup shall have a zero water vapor transmission rate
3. Terminoloy
(WVTR). The cups shall be rectangular with a flat, smooth,
3.1 Definitions—General terms in this test method are rigid flange and shall have the following dimensions:
defined in Terminology D 996.
Flange:
Outside–50.8 by 152.4 60.5mm[2.0by6.0 6 0.02 in.].
Inside (opening)–25.4 by 101.6 60.5mm[1.0by4.0 6 0.02 in.].
4. Summary of Test Method
Body:
4.1 The pressure-sensitive tape to be tested is secured by its
Inside–25.4 by 101.6 by 38.1 (depth) 6 0.5 mm [1.0 by 4.0 by 1.5 (depth)
6 0.02 in.].
adhesive to a test cup containing a desiccant. The assembly is
weighed, then reweighed following submersion under a speci-
The mass shall not exceed 80 % of the balance capacity used
fied head of water for a specified period of time. The gain in
in weighing.
weight is used to calculate the water penetration rate.
6.2 Desiccant, calcium chloride, anhydrous, passing a No. 8
[2.36-mm] sieve.
NOTE 2—Regenerate calcium chloride to a sufficiently anhydrous state
This test method is under the jurisdiction of ASTM Committee D10 on
Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and
Labels.
Current edition approved March 10, 1996. Published May 1996. Originally Available from Chemsultants International, 9349 Hamilton Dr., Mentor, OH
e1
published as D 3816 – 79. Last previous edition D 3816 – 88 (1993) . 44061–1118.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D3816/D3816M–96 (2003)
by heating it for2hat approximately 392°F [200°C].
10.4 Prepare the remaining assemblies in the same way as
the first.
6.3 Water Container—Any vessel allowing for sufficient
10.5 Heat the assemblies in the oven at 49°C [120°F] for 30
water depth to cover the test specimen assemblies with a
min.
25-mm [1.0-in.] head of water.
10.6 Cool at standard conditions (Section 9) for 30 min and
6.4 Water, distilled or deionized, in sufficient quantity to
weigh to the nearest 5 mg. This will be W for the equation in
supply the water head within the container. 1
Section 11.
6.5 Balance, accurate to 61 mg.
10.7 Submerge the assemblies under 23 to 25 mm [0.9 to
6.6 Oven, air-circulating, maintained at 49 6 1°C [1206
1.0 in.] of water (6.4) at 23 6 2°C [73.4 6 3.6°F] for 48 h.
2°F].
10.7.1 On removal from the water, use a lintless absorbent
7. Sampling
cloth or paper to remove visible water from the assemblies.
10.8 Placetheassembliesintheovenat49°C[120°F]for30
7.1 Acceptance Sampling—Sampling shall be in accordance
min.
with Practice D 3715/D 3715M.
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