ASTM D899-00

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D899–00
Standard Practice for
Applied Weight Per Unit Area of Liquid Adhesive
This standard is issued under the fixed designation D 899; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4.2 This practice can be used to supplement industry uses
such as that of visually checking the spread or the use of
1.1 This practice provides a procedure for the estimation of
mil-thickness gages.
thequantityofliquidadhesiveappliedinaspreadingorcoating
4.3 In laboratory and industrial operations, hand or me-
operation.
chanical application of adhesives can be duplicated for cost
1.2 The values stated in SI units are to be regarded as the
savings using this practice.
standard. The values given in parentheses are for information
only.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 The following apparatus is required for this practice:
safety concerns, if any, associated with its use. It is the
5.1.1 A balance, capable of weighing the material accu-
responsibility of the user of this standard to establish appro-
rately to the nearest 1 %, and
priate safety and health practices and determine the applica-
5.1.2 A suitable instrument for measuring the linear dimen-
bility of regulatory limitations prior to use.
sions of the specimens to the nearest 1 %.
2. Referenced Documents
6. Test Specimens
2.1 ASTM Standards:
2 6.1 Select test specimens from portions of the actual mate-
D 907 Terminology of Adhesives
rial to be coated or spread, or from the same lot or a similar
3. Terminology one,havingthesamephysicalcharacteristicssuchasthickness,
density, or texture.
3.1 Definitions—Severaltermsinthispracticearedefinedin
6.2 Thesizeofthespecimenmayvarywiththenatureofthe
accordance with Terminology D 907.
substrate.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 spreading or coating weight per unit area, n—thetotal
NOTE 1—Materials of low porosity normally require larger test speci-
quantity of liquid adhesive uniformly applied, expressed in
mens than materials of high porosity.
pounds per thousand square feet of joint or surface area. (See
6.3 Use simple geometric shapes for the test specimens to
spread in Terminology D 907.)
facilitate precise measurement of dimensions.
3.2.2 test specimen, n—the material that is to be coated with
6.4 For operations involving the coating or spreading of
adhesive. (See adherend in Terminology D 907).
sheeted stock, individual plies or lamina of the adherend, a
3.2.3 total quantity of liquid adhesive applied— the weight
minimum of 5 test specimens is required for determining the
of the adhesive on the test specimen as applied on the surface
average weight of liquid adhesive applied.
or at the glue joint, whether resulting from a single spread, a
6.5 For operations where the test specimen is in continuous
double spread, or multiple applications.
form, such as roll stock of paper or fabric, use a test specimen
sufficient in size to reflect accurately the average spreading or
4. Significance and Use
coating weight of liquid adhesive.
4.1 For the bonding of adherends, the amount of adhesive
present is critical and it is important to understand that this
7. Conditioning
practice does not ensure sufficient adhesive is present on the
7.1 Prior to the application of the adhesive, bring the test
adherend surface.
specimens to equilibrium with the atmospheric cond
...