ASTM D2979-16
(Test Method)Standard Test Method for Pressure-Sensitive Tack of Adhesives Using an Inverted Probe Machine (Withdrawn 2019)
Standard Test Method for Pressure-Sensitive Tack of Adhesives Using an Inverted Probe Machine (Withdrawn 2019)
SIGNIFICANCE AND USE
5.1 This test method provides a quantitative measure of the pressure-sensitive tack of the adhesive.
5.2 The method is designed for the adhesive mass itself and is suitable for measuring the tack of pressure-sensitive adhesives for use on both rigid and flexible backings.
5.3 This test method is suitable for quality control and research purposes.
SCOPE
1.1 This test method covers measurement of the pressure-sensitive tack of adhesives. This test method is applicable to those adhesives which form a bond of measurable strength rapidly upon contact with another surface and which can be removed from that surface cleanly, that is, without leaving a residue visible to the eye. For such adhesives, tack may be measured as the force required to separate an adhesive and the adherend at the interface shortly after they have been brought into contact under a defined load of known duration at a specified temperature.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
WITHDRAWN RATIONALE
This test method covered measurement of the pressure-sensitive tack of adhesives.
Formerly under the jurisdiction of Committee D10 on Packaging, this test method was withdrawn in April 2019. This test method is being withdrawn without replacement due to its limited use by industry.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2979 − 16
Standard Test Method for
Pressure-Sensitive Tack of Adhesives Using an Inverted
1
Probe Machine
This standard is issued under the fixed designation D2979; 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 4. Summary of Test Method
4.1 This test method involves bringing the tip of a cleaned
1.1 This test method covers measurement of the pressure-
probe of defined surface roughness into contact with the
sensitive tack of adhesives. This test method is applicable to
adhesiveatacontrolledrate,underafixedpressure,forashort
those adhesives which form a bond of measurable strength
time, at a given temperature; and subsequently breaking the
rapidly upon contact with another surface and which can be
bond formed between the probe and adhesive, also at a
removed from that surface cleanly, that is, without leaving a
controlled rate. Tack is measured as the maximum force
residue visible to the eye. For such adhesives, tack may be
required in breaking the adhesive bond.
measured as the force required to separate an adhesive and the
adherend at the interface shortly after they have been brought
5. Significance and Use
into contact under a defined load of known duration at a
specified temperature. 5.1 This test method provides a quantitative measure of the
pressure-sensitive tack of the adhesive.
1.2 The values stated in SI units are to be regarded as the
5.2 The method is designed for the adhesive mass itself and
standard. The values given in parentheses are for information
is suitable for measuring the tack of pressure-sensitive adhe-
only.
sives for use on both rigid and flexible backings.
1.3 This standard does not purport to address all of the
5.3 This test method is suitable for quality control and
safety concerns, if any, associated with its use. It is the
research purposes.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Apparatus
bility of regulatory limitations prior to use.
6.1 Probe—A Type 304 stainless steel rod, 5.0 mm
(0.197in.) in diameter, machined at one end of 90° to the
2. Referenced Documents
longitudinal axis. The tip is finished to a surface roughness of
2
2.1 ASTM Standards:
not more than 500 or less than 250 nm (20 to 10 µin.) rms as
3
D907Terminology of Adhesives
measured by a surface-measuring device.
E4Practices for Force Verification of Testing Machines
NOTE 1—When the adhesive is supported on flexible backings, or is
E171Practice for Conditioning and Testing Flexible Barrier
greater than 0.25 mm (0.010 in.) thick, a probe with a spherical crown of
Packaging
0.05 mm (0.002 in.) high, and with a 62.5-mm (2.5-in.) radius may be
used.
3. Terminology
6.2 Pressure-Loading Weight—An annular ring whose in-
side diameter is slightly larger than the probe diameter. The
3.1 Definitions—Many terms in this test method are defined
ring weight is such that the pressure applied to the sample is
in Terminology D907.
9.79 6 0.10 kPa (1.42 psi).
NOTE 2—Contact pressures of 0.98, 1.96, or 4.90 kPa (0.14, 0.28 or
1 0.71 psi) may be obtained by employing annuli of different weight.These
This test method is under the jurisdiction of ASTM Committee D10 on
lower pressures as well as ones of 98 kPa (14.2 psi) or higher can be used
Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and
to show the effect of pressure directly when tack is pressure-dependent.
Labels.
Current edition approved Oct. 1, 2016. Published November 2016. Originally
6.3 Force Gage—A spring device with an indicator that
approved in 1971. Last previous edition approved in 2009 as D2979–01(2009).
retains the maximum force reading until reset manually. The
DOI: 10.1520/D2979-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on An example of a suitable surface-measuring device is a Surfindicator manu-
the ASTM website. factured by Gould, Inc., Gage and Control Div., 4601 Arden Dr., El Monte, CA.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
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D2979 − 16
NOTE 6—The proper relation of the supported adhesive on the ring
spring characteristics is such that between 8.9 and 22.2 N (2
weight to the probe is sketched in Fig. 1. One possible arrangement of the
and5lb)arerequiredtoextenditthepermissible2.5mm(0.10
carrier and force gag
...
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