ASTM C879-03(2019)
(Test Method)Standard Test Methods for Release Papers Used with Preformed Tape Sealants
Standard Test Methods for Release Papers Used with Preformed Tape Sealants
SIGNIFICANCE AND USE
5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in various sealing applications. These tapes are usually supplied in roll form with a release paper interlayer. When the roll is unwound and the release paper is removed from the preformed tape sealant, there should be no transfer of the preformed tape sealant to the release paper, nor any residue left on the paper. These methods will give a qualitative indication of whether or not the release paper can be removed cleanly from a preformed tape sealant after a controlled exposure period.
5.2 Alternative procedures are listed because some preformed tape sealants are normally used under field conditions where elevated temperatures can be encountered, while other preformed tape sealants are normally used under more controlled environments in “assembly line” operations.
SCOPE
1.1 These test methods cover laboratory procedures for evaluating the release characteristics of a release paper intended to be supplied in direct contact with a preformed tape sealant.
1.2 The values stated in metric (SI) units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
1.3 The subcommittee with jurisdiction is not aware of any similar ISO standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C879 − 03 (Reapproved 2019)
Standard Test Methods for
Release Papers Used with Preformed Tape Sealants
This standard is issued under the fixed designation C879; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Duplicatesamplesarerolledwithastandardroller.Onesample
is heat aged in an oven, the other is heat aged in a humidity
1.1 These test methods cover laboratory procedures for
chamber. The release paper is peeled off of the preformed tape
evaluating the release characteristics of a release paper in-
sealant either at ambient or elevated temperature. The release
tended to be supplied in direct contact with a preformed tape
paper is examined for transfer or residue of the preformed tape
sealant.
sealant.
1.2 The values stated in metric (SI) units are to be regarded
as the standard. The values given in parentheses are provided
5. Significance and Use
for information purposes only.
5.1 Preformed tape sealants are tacky, deformable solids
1.3 The subcommittee with jurisdiction is not aware of any
that are used under compression between two substrates in
similar ISO standard.
various sealing applications. These tapes are usually supplied
in roll form with a release paper interlayer. When the roll is
1.4 This standard does not purport to address all of the
unwound and the release paper is removed from the preformed
safety concerns, if any, associated with its use. It is the
tape sealant, there should be no transfer of the preformed tape
responsibility of the user of this standard to establish appro-
sealant to the release paper, nor any residue left on the paper.
priate safety, health, and environmental practices and deter-
These methods will give a qualitative indication of whether or
mine the applicability of regulatory limitations prior to use.
notthereleasepapercanberemovedcleanlyfromapreformed
1.5 This international standard was developed in accor-
tape sealant after a controlled exposure period.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5.2 Alternative procedures are listed because some pre-
Development of International Standards, Guides and Recom-
formed tape sealants are normally used under field conditions
mendations issued by the World Trade Organization Technical
where elevated temperatures can be encountered, while other
Barriers to Trade (TBT) Committee.
preformed tape sealants are normally used under more con-
trolled environments in “assembly line” operations.
2. Referenced Documents
2.1 ASTM Standards:
6. Apparatus and Accessory Materials
C717Terminology of Building Seals and Sealants
6.1 Hard Rubber Roller, weighing 2043 g (4.5 lb), with
3. Terminology approximate dimensions of 82.5-mm (3.25-in.) diameter and
63.5-mm (2.5-in.) width. The rubber surface is 6.4 mm (0.25
3.1 Definitions—Thedefinitionsofthefollowingtermsused
in.) thick and has a durometer hardness value of 75 6 5.
in this test method are found in Terminology C717: preformed
6.2 Oven, forced-draft, set at 70 6 2°C (158 6 3.5°F) or 50
tape sealant, sealant.
6 2°C (122 6 3.5°F).
4. Summary of Test Method
6.3 Humidity Chamber, set at 41 6 2°C (105 6 3.5°F) and
4.1 The preformed tape sealant is placed between two strips
100+0,−2% relative humidity.
of release paper supplied with the preformed tape sealant.
6.4 Weight, 1000-g (2.2-lb).
These test methods are under the jurisdiction of ASTM Committee C24 on
7. Sampling
Building Seals and Sealants and are the direct responsibility of Subcommittee
C24.20 on General Test Methods.
7.1 Samples to be tested shall be taken from a fresh roll of
Current edition approved May 1, 2019. Published May 2019. Originally
preformed tape sealant, after first removing and discarding
approvedin1978.Lastpreviouseditionapprovedin2014asC879–03(2014).DOI:
approximately the first 600 mm (2 ft) of the roll.
10.1520/C0879-19.
For reference
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