ASTM D3521-86(2007)
(Test Method)Standard Test Method for Surface Wax Coating On Corrugated Board
Standard Test Method for Surface Wax Coating On Corrugated Board
SIGNIFICANCE AND USE
Wax coatings are applied to corrugated board to provide a better barrier against moisture or other agents or to provide improved appearance or abrasion resistance. These performance features are influenced by the amount of wax present on the surface.
During most coating operations, the major portion of the wax applied will congeal on the surface, while a minor proportion will migrate into and become embedded in the fibers of the facing. This method measures only the portion on the surface.
SCOPE
1.1 This test method covers determination of the weight of wax that is present as a coating on the surface of corrugated board. This method is applicable to board to which wax has been applied by curtain coating, roll coating, or other methods; the substrate board may or may not contain impregnating (saturating) wax within its structure. Note 1 - If it is known that the specimen has coating wax only, with no internal saturating wax, the total coating wax applied may be determined by Test Method D 3344.
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.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3521 − 86 (Reapproved2007)
Standard Test Method for
Surface Wax Coating On Corrugated Board
This standard is issued under the fixed designation D3521; 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 wax that is located below the surface, that may have been
permitted to soak into the fibrous paperboard structure.
1.1 This test method covers determination of the weight of
wax that is present as a coating on the surface of corrugated
4. Summary of Test Method
board. This method is applicable to board to which wax has
4.1 The amount of wax present as a coating on the surface
been applied by curtain coating, roll coating, or other methods;
is determined by delaminating the coated facing to obtain a
the substrate board may or may not contain impregnating
ripple-free sheet, then scraping off the wax using a razor blade
(saturating) wax within its structure.
and calculating the wax removed.
NOTE 1—If it is known that the specimen has coating wax only, with no
internal saturating wax, the total coating wax applied may be determined 5. Significance and Use
by Test Method D3344.
5.1 Wax coatings are applied to corrugated board to provide
1.2 This standard does not purport to address all of the
a better barrier against moisture or other agents or to provide
safety concerns, if any, associated with its use. It is the
improved appearance or abrasion resistance. These perfor-
responsibility of the user of this standard to establish appro-
mance features are influenced by the amount of wax present on
priate safety and health practices and determine the applica-
the surface.
bility of regulatory limitations prior to use.
5.2 During most coating operations, the major portion of the
wax applied will congeal on the surface, while a minor
2. Referenced Documents
proportion will migrate into and become embedded in the
2.1 ASTM Standards:
fibers of the facing. This method measures only the portion on
D585 Practice for Sampling and Accepting a Single Lot of
the surface.
Paper, Paperboard, Fiberboard, and Related Product
(Withdrawn 2010) 6. Apparatus
D3344 Test Method for Total Wax Content of Corrugated
6.1 Sample-Trimming Equipment—A suitable trimming
Paperboard
board or template arrangement equipped with a razor edge
knife for even cutting of specimens to required size, with
3. Terminology
parallel sides. (A guillotine-type paper cutter is not recom-
3.1 Definitions: mended.)
3.1.1 weight of wax coating—the weight of wax present as
6.2 Measuring Rule, steel edged, for measuring the size of
a surface film on corrugated paperboard, expressed as weight
specimen to within 0.5 mm.
per unit area, usually grams per square metre or pounds of
6.3 Razor Blades, common single-edge, having a rigid rim
coating per thousand feet of board covered.
for holding in the fingers. The blade is used for surface wax
3.1.1.1 Discussion—This definition excludes any portion of
scraping and an adequate supply of fresh blades with sharp
edges is required.
6.4 Analytical Balance, reading to nearest 1 mg.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee
7. Sampling and Test Specimen
D02.10.0A on Physical/Chemical Properties.
Current edition approved May 1, 2007. Published June 2007. Originally
7.1 From each test unit, obtained in accordance with Prac-
approved in 1976. Last previous edition approved in 2002 as D3521 – 86 (2002).
tice D585, that is, each finished carton blank or paperboard
DOI: 10.1520/D3521-86R07.
sheet, cut specimens free from obvious defects. Each specimen
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
should measure 100 by 100 mm, cut to the nearest 0.5 mm.
Standards volume information, refer to the standard’s Document Summary page on
Record the area of the surface to be tested, and whether it is an
the ASTM website.
insideoroutsidefacing.Duplicatespecimensarerequiredfrom
The last approved version of this historical standard is referenced on
www.astm.org. each sample unit.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3521 − 86 (Reapproved2007)
NOTE 2—The operator may be required to increase the replication and
treatment of specimens to obtain a better estimate of “average” wax
D3521 − 86 (2007)
loading, (1) if the waxing is at an extremely low level, or (2) if the wax
9. Calculation
loading shows obvious wide variations in distribution over the board area.
9.1 Calculate the weight of surface coating on the facing, a,
NOTE 3—Optionally, specimens of other dimensions may be used if
in g/m , as follows:
required by sampling limitations. In such cases, calculations need to be
appropriately adjusted.
c 2 d
a 5 (1)
7.2 Condition all boards at 23°C (73°F) and 50 % relative
b
humidity for a minimum of 48 h before beginning test
where:
procedure.
b = specimen area, total, m ,
8. Procedure
c = weight of duplicate delaminated facings, before scrap-
8.1 Take each duplicate specimen and separate the coated
ing, g, and
facing from the combined board as follows: d = weight of facings, after scraping, g.
8.1.1 Delaminate the fibers of the facing
...
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