ASTM F2217/F2217M-13
(Practice)Standard Practice for Coating/Adhesive Weight Determination
Standard Practice for Coating/Adhesive Weight Determination
SIGNIFICANCE AND USE
5.1 Coating weight is an indicator of certain functional characteristics of coated substrates (for example, sealability, peelability, appearance). The methodology described in this practice is a means of determining coat weight.
5.2 This practice does not address acceptability criteria. These need to be jointly determined by the user and producer of the product.
5.3 The methodology described in this practice includes operator assessment of effective coating removal. This is a subjective assessment and requires operator training for consistent results.
5.4 This practice is applicable to coated substrates in which only the coating is soluble in the chosen solvent. The solvent used is critical to the success of the coating removal process. The coated substrate manufacturer must provide guidance in choice of solvent.
SCOPE
1.1 This practice covers a procedure for determining the amount of coating applied to a substrate, (for example, film, paper, nonwoven). The amount of coating is expressed as a weight per given area, (for example, g/m2, lb/ream).
1.2 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.
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Designation: F2217/F2217M − 13
Standard Practice for
1
Coating/Adhesive Weight Determination
ThisstandardisissuedunderthefixeddesignationF2217/F2217M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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. Summary of Practice
1.1 This practice covers a procedure for determining the 4.1 Representative samples of coated material are weighed,
amount of coating applied to a substrate, (for example, film, coating is removed using a solvent appropriate for the coating,
paper, nonwoven). The amount of coating is expressed as a samples are dried and weighed again. The differential obtained
2
weight per given area, (for example, g/m , lb/ream). is the coating weight.
1.2 The values stated in either SI units or inch-pound units 4.2 Typical methodology is as follows:
are to be regarded separately as standard. The values stated in
4.2.1 Cut representative samples using a cutting device and
2 2
each system may not be exact equivalents; therefore, each
a template of known unit area “A” mm (in. ), for example,
system shall be used independently of the other. Combining
203.2 by 50.8 mm (8 by 2 in.) template.
values from the two systems may result in non-conformance
4.2.2 Weigh each sample on the analytical balance to the
with the standard.
nearest 0.0001 g and record the value “W .” Samples may be
1
folded and placed on to the analytical balance.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
NOTE 2—If sample is conditioned weigh immediately.
responsibility of the user of this standard to establish appro-
4.2.3 Using solvent in which the coating is soluble and the
priate safety and health practices and determine the applica-
substrate is insoluble, remove coating from substrate. Typical
bility of regulatory limitations prior to use.
methods are wiping with solvent saturated cloth, immersing
samples in solvent to soften, then wiping with cloth or brush,
2. Referenced Documents
if needed, or immersing sample, agitating to soften, then
2
2.1 ASTM Standards:
wiping with cloth or brush. For specific recommendations
E171/E171M Practice for Conditioning and Testing Flexible
contact the coated substrate supplier.
Barrier Packaging
NOTE 3—Accumulated coating in solvent, cloth or brush can reduce the
ability to clean sample properly and may affect test results.
3. Terminology
4.2.4 Thoroughly dry the substrate with a drying appliance.
3.1 coating—a material applied to enhance the characteris-
A timer should be used to ensure consistency in immersion,
ticsofthebasesubstrates.Forthispractice,thecoatingmustbe
cleaning and drying time. Drying of hygroscopic materials
soluble in the chosen solvent.
should be consistent with conditioning parameters.
3.2 ream—500 sheets of 609.6 by 914.4 mm (24 by 36 in.)
4.2.5 Re-weigh each sample on the analytical balance to the
2 2
equal to 278.7 m (3000 ft ).
nearest 0.0001 g and record the value “W .”
2
4.2.6 Calculate and report the adhesive coat weight using
NOTE1—Otherreamsizesmaybeinuse.Ifusingareamsizeotherthan
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
Adhesive Coat Weight 5 (1)
S D
AP
where:
1
This practice is under the jurisdiction of ASTM Committee F02 on Flexible
Barrier Packaging and is the direct responsibility of Subcommittee F02.20 on
W = weight of coated substrate, g,
1
Physical Properties.
W = weight of uncoated substrate, g,
2
Current edition approved April 1, 2013. Published June 2013. Originally 2 2
A = area of substrate, mm (in. ),
approved in 2002. Last previous edition approved in 2012 as F2217 – 02 (2012).
P = fraction of substrate that is coated (P = 1 except for
DOI: 10.1520/F2217-13.
2
zone coated materials), and
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
K = constant (see below).
Standards volume information, refer to the standard’s Document Summary page on
2
the ASTM website. 4.2.7 When coat weight is expressed in g/m :
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2217/F2217M − 13
6 2 2
K 5 1 310 mm /m (2) 6.10 Template Die, of known area for cutting standard size
coated web samples. Template should be part of a regular
4.2.8 When coat weight is expressed in lb/ream:
calibration check to prevent loss in wear.
2
in. ·lb
K 5 952.4 (3)
S D
7. Hazards
r
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2217 − 02 (Reapproved 2012) F2217/F2217M − 13
Standard Practice for
1
Coating/Adhesive Weight Determination
This standard is issued under the fixed designation F2217;F2217/F2217M; 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
1.1 This practice covers a procedure for determining the amount of coating applied to a substrate, (for example, film, paper,
2
nonwoven). The amount of coating is expressed as a weight per given area, (for example, g/m , lb/ream).
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
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
2.1 ASTM Standards:
D1898E171/E171M Practice for Sampling of PlasticsConditioning and Testing Flexible Barrier Packaging (Withdrawn 1998)
D4332 Practice for Conditioning Containers, Packages, or Packaging Components for Testing
3. Terminology
3.1 coating—a material applied to enhance the characteristics of the base substrates. For this practice, the coating must be
soluble in the chosen solvent.
2 2
3.2 ream—500 sheets of 609.6 by 914.4 mm (24 by 36 in.) equal to 278.7 m (3000 ft ).
2 2
NOTE 1—Other ream sizes may be in use. If using a ream size other than 278.7 m (3000 ft ), the conversion factor K (located in the appendix) must
be recalculated if reporting results as lb/ream.
4. Summary of Practice
4.1 Representative samples of coated material are weighed, coating is removed using a solvent appropriate for the coating,
samples are dried and weighed again. The differential obtained is the coating weight.
4.2 Typical methodology is as follows:
2 2
4.2.1 Cut representative samples using a cutting device and a template of known unit area “A” mm (in. ), for example, 203.2
by 50.8 mm (8 by 2 in.) template.
4.2.2 Weigh each sample on the analytical balance to the nearest 0.0001 g and record the value “W .” Samples may be folded
1
and placed on to the analytical balance.
NOTE 2—If sample is conditioned weigh immediately.
4.2.3 Using solvent in which the coating is soluble and the substrate is insoluble, remove coating from substrate. Typical
methods are wiping with solvent saturated cloth, immersing samples in solvent to soften, then wiping with cloth or brush, if
needed, or immersing sample, agitating to soften, then wiping with cloth or brush. For specific recommendations contact the coated
substrate supplier.
NOTE 3—Accumulated coating in solvent, cloth or brush can reduce the ability to clean sample properly and may affect test results.
1
This practice is under the jurisdiction of ASTM Committee F02 on Flexible Barrier Packaging and is the direct responsibility of Subcommittee F02.20 on Physical
Properties.
Current edition approved Nov. 1, 2012April 1, 2013. Published November 2012June 2013. Originally approved in 2002. Last previous edition approved in 20072012 as
F2217 – 02 (2007).(2012). DOI: 10.1520/F2217-02R12.10.1520/F2217-13.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2217/F2217M − 13
4.2.4 Thoroughly dry the substrate with a drying appliance. A timer should be used to ensure consistency in immersion, cleaning
and drying time. Drying of hygroscopic materials should be consistent with conditioning parameters.
4.2.5 Re-weigh each sample on the analytical balance to the nearest 0.0001 g and record the value “W .”
2
4.2.6 Calculate and report the adhesive coat weight using the following equation:
K ~W 2 W !
1 2
Adhesive Coat Weight 5 (1)
S D
AP
where:
W = weigh
...
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