ASTM D3708-88(1993)e1

Standard Test Method for Weight of Wax Applied During Curtain Coating Operation

SCOPE
1.1 This test method covers the determination of the weight of hot melt coating applied to corrugated board by curtain coating. It is intended to be used for routine process control in the plant.
Note 1Related methods for determining the weight of wax coating include the following: Test Method D3521; Test Method D3522, and Test Method D3344.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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

• Status: Historical
• Publication Date: 31-Dec-1999
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.10.0A - Physical/Chemical Properties

Relations

• Replaced By: ASTM D3708-88(2000) - Standard Test Method for Weight of Wax Applied During Curtain Coating Operation
• Effective Date: 01-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 3708 – 88 (Reapproved 1993) An American National Standard
Standard Test Method for
Weight of Wax Applied During Curtain Coating Operation
This standard is issued under the fixed designation D 3708; 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.
e NOTE—Keywords were added editorially in October 1993.
1. Scope means of a curtain coater is determined by attaching a folded
sheet of paper to production corrugated board, running the
1.1 This test method covers the determination of the weight
combination through the curtain coater, and subsequently
of hot melt coating applied to corrugated board by curtain
determining the applied weight of wax on the sheet of paper.
coating. It is intended to be used for routine process control in
the plant.
5. Significance and Use
NOTE 1—Related methods for determining the weight of wax coating
5.1 Wax coatings are applied to corrugated board to provide
include the following: Test Method D 3521; Test Method D 3522, and Test
a barrier against moisture or other penetrants or to provide
Method D 3344.
improved appearance or abrasion resistance. These functional
1.2 This standard may involve hazardous materials, opera-
properties are influenced by the amount of wax present on the
tions, and equipment. This standard does not purport to
surface.
address all of the safety problems associated with its use. It is
5.2 During curtain coating operations, major portions of the
the responsibility of the user of this standard to establish
wax will congeal on the surface, while a minor portion will
appropriate safety and health practices and determine the
penetrate and become embedded in the fibers of the facing.
applicability of regulatory limitations prior to use.
This method measures the total weight of wax applied to the
1.3 The values stated in SI units are to be regarded as the
board. The amount actually remaining on the surface of the
standard. The values given in parentheses are for information
corrugated board can be determined by Test Method D 3521.
only.
5.3 The uniformity of application of wax film across the
width of the curtain coater may also be determined using this
2. Referenced Documents
technique by passing test combinations (blanks) under the
2.1 ASTM Standards:
curtain at various locations, that is, left side, center, right side.
D 3344 Test Method for Total Wax Content of Corrugated
Paperboard 6. Apparatus
D 3521 Test Method for Surface Wax Coating on Corru-
6.1 Sample Trimming Equipment—A suitable trimming
gated Board
board or template arrangement equipped with a razor edge
D 3522 Test Method for Applied Coating Wax and Impreg-
knife for even cutting of specimens to the required size with
nating (Saturating) Wax in Corrugated Board Facing
parallel edges.
6.2 Measuring Rule, steel-edged, for measuring the size of
3. Terminology
specimens to within 0.5 mm.
3.1 Definitions:
6.3 Test Paper—Any good quality typing bond with about
3.1.1 wax loading—the weight of wax present primarily as
25 % cotton fibers approximately 200 by 300 mm (8 ⁄2 by 11
a surface film but including the minor part embedded in the
in.).
surface fibers of corrugated board. It is expressed as weight per
6.4 Pressure-Sensitive Tape, to attach the test paper to the
unit area, usually in grams per square metre or pounds per
corrugated carrier board.
thousand square feet of board.
6.5 Carrier Board—Production uncoated corrugated board,
not less than 450 by 750 mm (18 by 30 in.). Die cut, slotted,
4. Summary of Test Method
and printed box blanks are acceptable.
4.1 The amount of wax applied to corrugated board by
6.6 Analytical Balance, capable of reproducing weighings
to the nearest 0.001 g.
This test method is under the jurisdiction of ASTM Committee D02 on
7. Sampling and Test Specimens
Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee
D02.10.0Aon Physical and Chemical Properties.
7.1 Prepare test blanks by folding the 200 by 300-mm (8 ⁄2
Current edition approved Oct. 31, 1988. Published January 1989. Originally
by 11-in.) sheets of the test paper in half in the 300-mm
published as D 3708 – 78. Last previous edition D 3708 – 78(1983).
dimension. Assure that all folded edges are approximately
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