ASTM D5327-97(2007)
(Practice)Standard Practice for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under General Laboratory Conditions
Standard Practice for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under General Laboratory Conditions
SIGNIFICANCE AND USE
Subject to the limitations listed in 1.3, this practice can be used as a research tool to optimize spray equipment and paint formulations, as well as to study the relative effect on transfer efficiency of changing operating variables, spray application equipment, type of coatings, etc.
SCOPE
1.1 This practice covers the evaluation and comparison of the transfer efficiency of spray-applied coatings under general laboratory conditions. Transfer efficiency is the ratio of paint solids deposited to the total paint solids used during the application process, expressed as a percent. This practice can be used to study the effect on transfer efficiency of changing operating variables and paint formulations. Key variables that need to be controlled are listed in 8.13.
Note 1 - It is important that all process or formulation parameters, except that which is intentionally being changed, be kept consistent from test to test. If not done, the results of the study are to be questioned.
1.2 The reproducibility of this practice is highly dependent on the degree of control of the parameters listed in Section 8 of the practice.
1.3 Limitations - This laboratory practice indicates only the direction of the effect of operating variables and liquid paint formulations on transfer efficiency under conditions of the laboratory test: the magnitude of the effect can be determined only with specific plant experience. In fact, the nature of the critical parameters that affect transfer efficiency makes clear that it is not possible to extrapolate laboratory results.
Note 2 - The laboratory practice outlined involves general laboratory spray equipment and procedures and is derived from Test Method D 5009. This practice and Test Method D 5009 are both derived from a study and report of transfer efficiency measurements conducted for the U.S. Environmental Protection Agency. For laboratories that have access to a conveyor and mass flow measurement equipment, a suitable, potentially more reproducible, tested method is defined in Test Method D 5009.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. For specific hazard statements see Section 7, Note 8 and Note 9.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D5327 − 97 (Reapproved2007)
Standard Practice for
Evaluating and Comparing Transfer Efficiency of Spray
1
Applied Coatings Under General Laboratory Conditions
This standard is issued under the fixed designation D5327; 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 priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard
1.1 This practice covers the evaluation and comparison of
statements see Section 7, Note 8 and Note 9.
the transfer efficiency of spray-applied coatings under general
laboratory conditions. Transfer efficiency is the ratio of paint
2. Referenced Documents
solids deposited to the total paint solids used during the
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2.1 ASTM Standards:
application process, expressed as a percent. This practice can
D1200 Test Method for Viscosity by Ford Viscosity Cup
be used to study the effect on transfer efficiency of changing
D2369 Test Method for Volatile Content of Coatings
operating variables and paint formulations. Key variables that
D3925 Practice for Sampling Liquid Paints and Related
need to be controlled are listed in 8.13.
Pigmented Coatings
NOTE 1—It is important that all process or formulation parameters,
D5009 Test Method for Evaluating and Comparing Transfer
except that which is intentionally being changed, be kept consistent from
Efficiency of Spray Applied Coatings Under Laboratory
test to test. If not done, the results of the study are to be questioned.
Conditions
1.2 The reproducibility of this practice is highly dependent
2.2 Other Standards:
on the degree of control of the parameters listed in Section 8 of
NFPA33 SprayApplication Using Flammable and Combus-
the practice. 3
tible Materials
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1.3 Limitations—This laboratory practice indicates only the
NFPA 86 Standard for Ovens and Furnaces
direction of the effect of operating variables and liquid paint
3. Terminology
formulations on transfer efficiency under conditions of the
laboratory test: the magnitude of the effect can be determined
3.1 Definitions of Terms Specific to This Standard:
only with specific plant experience. In fact, the nature of the
3.1.1 fluid mass flow rate, n—the mass flow rate of paint in
critical parameters that affect transfer efficiency makes clear
grams per minute during the test.
that it is not possible to extrapolate laboratory results.
3.1.2 mass of foil, n—the weight of each target foil in grams
NOTE 2—The laboratory practice outlined involves general laboratory before being painted.
spray equipment and procedures and is derived from Test Method D5009.
3.1.3 mass of foil plus paint solids, n—the weight of each
This practice and Test Method D5009 are both derived from a study and
target foil in grams after being painted and baked.
report of transfer efficiency measurements conducted for the U.S. Envi-
ronmental Protection Agency. For laboratories that have access to a
3.1.4 mass of paint solids, n—the difference in the mass of
conveyor and mass flow measurement equipment, a suitable, potentially
the foil before painting and the mass of the foil after painting
more reproducible, tested method is defined in Test Method D5009.
and baking. The sum of the mass of the foil plus paint solids
1.4 The values stated in SI units are to be regarded as the
less the sum of the mass of the foil.
standard. The values given in parentheses are for information
3.1.5 transfer effıciency, n—theratioofthemassofthepaint
only.
solids deposited on the foil to the mass of the paint solids
1.5 This standard does not purport to address all of the
sprayed during the test, expressed as a percent.
safety concerns, if any, associated with its use. It is the
3.1.6 weight percent solids, n—the solids content as percent
responsibility of the user of this standard to establish appro-
of the total weight of a sample of the paint used during the test.
1 2
This practice is under the jurisdiction of ASTM Committee D01 onPaint and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Related Coatings, Materials, and Applications and is the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
SubcommitteeD01.55 onFactory Applied Coatings on Preformed Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved June 1, 2007. Published August 2007. Originally the ASTM website.
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approved in 1992. Last previous edition approved in 2002 as D5327 – 97 (2002). Available from National Fire Protection Association (NFPA), 1 Batterymarch
DOI: 10.1520/
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