ASTM F2217-02(2012)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F2217 − 02(Reapproved 2012)
Standard Practice for
Coating/Adhesive Weight Determination
This standard is issued under the fixed designation F2217; 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 4.2 Typical methodology is as follows:
4.2.1 Cut representative samples using a cutting device and
1.1 This practice covers a procedure for determining the
2 2
a template of known unit area “A” mm (in. ), for example,
amount of coating applied to a substrate, (for example, film,
203.2 by 50.8 mm (8 by 2 in.) template.
paper, nonwoven). The amount of coating is expressed as a
4.2.2 Weigh each sample on the analytical balance to the
weight per given area, (for example, g/m , lb/ream).
nearest 0.0001 g and record the value “W .” Samples may be
1.2 This standard does not purport to address all of the
folded and placed on to the analytical balance.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
NOTE 2—If sample is conditioned weigh immediately.
priate safety and health practices and determine the applica-
4.2.3 Using solvent in which the coating is soluble and the
bility of regulatory limitations prior to use.
substrate is insoluble, remove coating from substrate. Typical
methods are wiping with solvent saturated cloth, immersing
2. Referenced Documents
samples in solvent to soften, then wiping with cloth or brush,
2.1 ASTM Standards:
if needed, or immersing sample, agitating to soften, then
D1898 Practice for Sampling of Plastics (Withdrawn 1998)
wiping with cloth or brush. For specific recommendations
D4332 Practice for Conditioning Containers, Packages, or
contact the coated substrate supplier.
Packaging Components for Testing
NOTE 3—Accumulated coating in solvent, cloth or brush can reduce the
ability to clean sample properly and may affect test results.
3. Terminology
3.1 coating—a material applied to enhance the characteris- 4.2.4 Thoroughly dry the substrate with a drying appliance.
ticsofthebasesubstrates.Forthispractice,thecoatingmustbe A timer should be used to ensure consistency in immersion,
soluble in the chosen solvent. cleaning and drying time. Drying of hygroscopic materials
should be consistent with conditioning parameters.
3.2 ream—500 sheets of 609.6 by 914.4 mm (24 by 36 in.)
2 2
4.2.5 Re-weigh each sample on the analytical balance to the
equal to 278.7 m (3000 ft ).
nearest 0.0001 g and record the value “W .”
NOTE1—Otherreamsizesmaybeinuse.Ifusingareamsizeotherthan
4.2.6 Calculate and report the adhesive coat weight using
2 2
278.7 m (3000 ft ), the conversion factor K (located in the appendix)
the following equation:
must be recalculated if reporting results as lb/ream.
K ~W 2 W !
1 2
4. Summary of Practice Adhesive Coat Weight 5 (1)
S D
AP
4.1 Representative samples of coated material are weighed,
where:
coating is removed using a solvent appropriate for the coating,
W = weight of coated substrate, g,
samples are dried and weighed again. The differential obtained 1
W = weight of uncoated substrate, g,
is the coating weight.
2 2
A = area of substrate, mm (in. ),
P = fraction of substrate that is coated (P = 1 except for
This practice is under the jurisdiction of ASTM Committee F02 on Flexible zone coated materials), and
Barrier Packaging and is the direct responsibility of Subcommittee F02.20 on
K = constant (see below).
Physical Properties.
Current edition approved Nov. 1, 2012. Published November 2012. Originally
4.2.7 When coat weight is expressed in g/m :
approved in 2002. Last previous edition approved in 2007 as F2217 – 02 (2007).
6 2 2
K 5 1 310 mm /m (2)
DOI: 10.1520/F2217-02R12.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.8 When coat weight is expressed in lb/ream:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
in. ·lb
the ASTM website.
K 5 952.4 (3)
S D
ream·g
The last approved version of this historical standard is referenced on
www.astm.org. NOTE 4—For explanation of how K is determined, see Appendix X1.
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F2217 − 02 (2012)
5. Significance and Use 7. Hazards
7.1 Solvents may be toxic. When using solvents, work in a
5.1 Coating weight is an indicator of certain functional
fume hood. Wear gloves when handling. Solvents may be
characteristics of coated substrates (for example, sealability,
flammable. Do not allow solvent to touch hot surfaces and
peelability, appearance). The methodology described in this
ensure vapors are vented away. See solvent Material Safety
practice is a means of determining coat weight.
Data Sheet for additional information.
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