ASTM C879-03(2014)
(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 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.
General Information
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Standards Content (Sample)
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Designation: C879 − 03 (Reapproved 2014)
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. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Significance and Use
1.1 These test methods cover laboratory procedures for
5.1 Preformed tape sealants are tacky, deformable solids
evaluating the release characteristics of a release paper in-
that are used under compression between two substrates in
tended to be supplied in direct contact with a preformed tape
various sealing applications. These tapes are usually supplied
sealant.
in roll form with a release paper interlayer. When the roll is
unwound and the release paper is removed from the preformed
1.2 The values stated in metric (SI) units are to be regarded
tape sealant, there should be no transfer of the preformed tape
as the standard. The values given in parentheses are provided
sealant to the release paper, nor any residue left on the paper.
for information purposes only.
These methods will give a qualitative indication of whether or
1.3 The subcommittee with jurisdiction is not aware of any
notthereleasepapercanberemovedcleanlyfromapreformed
similar ISO standard.
tape sealant after a controlled exposure period.
1.4 This standard does not purport to address all of the
5.2 Alternative procedures are listed because some pre-
safety concerns associated with its use. It is the responsibility
formed tape sealants are normally used under field conditions
of the user of this standard to establish appropriate safety and
where elevated temperatures can be encountered, while other
health practices and determine the applicability of regulatory
preformed tape sealants are normally used under more con-
limitations prior to use.
trolled environments in “assembly line” operations.
2. Referenced Documents
6. Apparatus and Accessory Materials
2.1 ASTM Standards:
C717Terminology of Building Seals and Sealants
6.1 Hard Rubber Roller, weighing 2043 g (4.5 lb), with
approximate dimensions of 82.5-mm (3.25-in.) diameter and
3. Terminology
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).
Duplicatesamplesarerolledwithastandardroller.Onesample
is heat aged in an oven, the other is heat aged in a humidity
chamber. The release paper is peeled off of the preformed tape 7. Sampling
sealant either at ambient or elevated temperature. The release
7.1 Samples to be tested shall be taken from a fresh roll of
paper is examined for transfer or residue of the preformed tape
preformed tape sealant, after first removing and discarding
sealant.
approximately the first 600 mm (2 ft) of the roll.
These test methods are under the jurisdiction of ASTM Committee C24 on
8. Test Specimens
Building Seals and Sealants and are the direct responsibility of Subcommittee
C24.20 on General Test Methods.
8.1 Prepare two test specimens as follows:
Current edition approved Jan. 1, 2014. Published January 2014. Originally
8.1.1 Place a 152-mm (6-in.) length of preformed tape
approvedin1978.Lastpreviouseditionapprovedin2009asC879–03(2009).DOI:
10.1520/C0879-14.
sealantbetweentwostripsofreleasepaperthatissuppliedwith
For referenced ASTM standards, visit the ASTM website, www.
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