ASTM D2423-90(2002)

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An American National Standard
Designation:D2423–90(Reapproved2002)
Standard Test Method for
Surface Wax on Waxed Paper or Paperboard
This standard is issued under the fixed designation D 2423; 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.
1. Scope surface film. Test methods which determine wax load by
solvent extraction do not differentiate between the wax present
1.1 This test method covers determination of the weight of
as a surface wax layer and that which has penetrated into the
wax on the surface of waxed paper.
substrate. This test method, which mechanically removes the
1.2 This standard does not purport to address all of the
wax, measures the amount on each surface of the substrate.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
6. Apparatus
priate safety and health practices and determine the applica-
6.1 Pad of paper to be used as a cushion under the waxed
bility of regulatory limitations prior to use.
paper specimens during the scraping operation.
2. Referenced Documents 6.2 Analytical Balance, capable of reproducing weights to
the nearest 0.001 g.
2.1 ASTM Standards:
6.3 Razor Blade,single-edgedforscrapingthewaxfromthe
D 585 Practice for Sampling andAccepting a Single Lot of
specimen.
Paper, Paperboard, Fiberboard, or Related Product
6.4 Trimming Board, or other device for cutting paper
D 646 Test Method for Grammage of Paper and Paperboard
specimens. A paper cutter having an attachment for ensuring
(Mass per Unit Area)
parallelism of the opposite edge of the trimmed sheet, or a
3. Terminology template, or a die cutter is recommended.
6.5 Measuring Device, capable of measuring the size of the
3.1 Definitions:
specimen to an accuracy 0.5 mm.
3.1.1 basis weight of paper—basis weight is expressed in
grams per square metre. In countries where the metric system
7. Sampling
is not universal, basis weight is also expressed in pounds per
7.1 Select samples that are free of wrinkles, cuts, or other
ream.
defects in accordance with Practice D 585.
3.1.2 ream of paper (news and wrapping)—500 sheets each
610 by 914 mm (24 by 36 in.).
8. Procedure
NOTE 1—For factors to convert basis weight in grams per square metre
8.1 Prepare a specimen consisting of a 100 by 100-mm
to other commercial reams, see Test Method D 646.
square of waxed paper. Determine the area (in square millime-
tres) of each specimen to the nearest 1.0 % of its total area.
4. Summary of Test Method
8.2 Weigh the specimen on the analytical balance to the
4.1 The quantity of wax present as a surface film on paper
nearest 0.5 % of its total weight.
orpaperboardisdeterminedthroughthedifferenceinweightof
8.3 Remove the surface wax from one side of the specimen
specimens before and after scraping with a razor blade.
(side No. 1) by scraping toward each of its four edges as
follows: Hold the specimen firmly on the pad to prevent
5. Significance and Use
slippage. With a razor blade held vertically, scrape the entire
5.1 Many of the functional properties of waxed paper and
area of one side of the specimen with repeated one-directional
paperboard are related to the amount of wax present as a
strokesoftheblade,slightlyoverlappingthestrokes.Rotatethe
specimen through 90° and repeat the scraping. Continue
rotating and scraping twice more to complete the process.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
8.4 Reweigh the specimen as described in 8.2. Record the
D02.10.0A on Phys
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