Standard Test Method for
Water Penetration Rate of Pressure-Sensitive Tapes1

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

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 equivalent; 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.

2. Referenced Documents

2.1 ASTM Standards:
D 996 Terminology of Packaging and Distribution Environments2
D 3715/D3715M Practice for Quality Assurance of
Pressure-Sensitive Tapes2
D 4332 Practice for Conditioning Containers, Packages, or
Packaging Components for Testing2
E 122 Practice for Calculating Sample Size to Estimate,
With a Specified Tolerable Error, the Average for a
Characteristic of a Lot or Process3

3. Terminoloy

3.1 Definitions—General terms in this test method are
defined in Terminology D 996.

4. Summary of Test Method

4.1 The pressure-sensitive tape to be tested is secured by its
adhesive to a test cup containing a desiccant. The assembly is
weighed, then reweighed following submersion under a specified head of water for a specified period of time. The gain in
weight is used to calculate the water penetration rate.

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