ASTM D3813/D3813M-98(2007)
(Test Method)Standard Test Method for Curling and Twisting on Unwinding of Pressure-Sensitive Tapes
Standard Test Method for Curling and Twisting on Unwinding of Pressure-Sensitive Tapes
SIGNIFICANCE AND USE
This test method will provide information on the relative tendency of tapes to curl, twist, or form into a tube with touching edges. The amount of each is a predictor of the difficulty one might experience in handling strips of tape of any length during their application.
There are several causes for variation in the extent or degree of these characteristics and may vary themselves within a production lot of tape. Therefore, it is essential to use an accepted sampling plan (see Section 7) when it is desired to use this test method to compare two types of tape for acceptance sampling purposes.
SCOPE
1.1 This test method provides one procedure for determining the extent of curling and the degree of twisting resulting from the unwinding of tape from its roll.
1.2 The values stated in either SI or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently, without combining values in any way.
1.3 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.
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Standards Content (Sample)
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Designation: D3813/D3813M – 98 (Reapproved 2007)
Standard Test Method for
Curling, Twisting, and Tubing on Unwind of Pressure-
Sensitive Tapes
This standard is issued under the fixed designation D3813/D3813M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Summary of Test Method
1.1 This test method provides one procedure for determin- 4.1 The sample roll of tape is placed on a free-turning
ing the extent of curling, the degree of twisting, and tendency spindle a specified distance above a horizontal plane.Astrip of
to form a tube resulting from unwinding of the tape from its tape is drawn from the roll the distance to the plane at a
roll. specified rate and released. Any subsequent curling, twisting,
1.2 The values stated in either SI or inch-pound units are to or tubing of the strip is observed and measured.
be regarded separately as standard. The values stated in each
5. Significance and Use
system may not be exact equivalents; therefore, each system
5.1 Thistestmethodwillprovideinformationontherelative
must be used independently, without combining values in any
way. tendency of tapes to curl, twist, or form into a tube with
touching edges. The amount of each is a predictor of the
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the difficultyonemightexperienceinhandlingstripsoftapeofany
length during their application.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 5.2 There are several causes for variation in the extent or
degree of these characteristics and may vary themselves within
bility of regulatory limitations prior to use.
a production lot of tape. Therefore, it is essential to use an
2. Referenced Documents
acceptedsamplingplan(seeSection7)whenitisdesiredtouse
2.1 ASTM Standards: this test method to compare two types of tape for acceptance
D996 Terminology of Packaging and Distribution Environ- sampling purposes.
ments
6. Apparatus
D3715/D3715M Practice for Quality Assurance of
Pressure-Sensitive Tapes 6.1 Free-Turning Spindle, sized to fit snugly inside the
sample tape core, with its axis firmly supported horizontally
D4332 Practice for Conditioning Containers, Packages, or
Packaging Components for Testing and adjustable in height directly above a horizontal platform.
There should be no obstructions in the path between the
E122 Practice for Calculating Sample Size to Estimate,
With Specified Precision, the Average for a Characteristic platform and the spindle.
of a Lot or Process
NOTE 1—The horizontal platform can be a bench top or the floor.
3. Terminology
7. Sampling
3.1 Definitions—General terms used in this test method are
7.1 Acceptance Sampling—Sampling shall be in accordance
defined in Terminology D996.
with Practice D3715/D3715M.
7.2 Sampling for Other Purposes—The sampling and the
number of test specimens depends on the purpose of the
This test method is under the jurisdiction of ASTM Committee D10 on
testing. Practice E122 is recommended. It is common to test at
Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and
Labels. least five specimens of a particular tape.Test specimens should
Current edition approved Oct. 1, 2007. Published October 2007. Originally
approved in 1979. Last previous edition approved in 2003 as D3813/D3813M – 98
(2003). DOI: 10.1520/D3813_D3813M-98R07. The sole source of supply of the apparatus known to the committee at this time
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D3813/D3813M – 98 (2007)
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