ASTM D3813/D3813M-98(2020)
(Test Method)Standard Test Method for Curling, Twisting, and Tubing on Unwind of Pressure-Sensitive Tapes
Standard Test Method for Curling, Twisting, and Tubing on Unwind of Pressure-Sensitive Tapes
SIGNIFICANCE AND USE
5.1 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.
5.2 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, the degree of twisting, and tendency to form a tube resulting from unwinding of the 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3813/D3813M − 98 (Reapproved 2020)
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 U.S. Department of Defense.
1. Scope E122 Practice for Calculating Sample Size to Estimate,With
Specified Precision, the Average for a Characteristic of a
1.1 This test method provides one procedure for determin-
Lot or Process
ing the extent of curling, the degree of twisting, and tendency
to form a tube resulting from unwinding of the tape from its
3. Terminology
roll.
3.1 Definitions—General terms used in this test method are
1.2 The values stated in either SI or inch-pound units are to
defined in Terminology D996.
be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system
4. Summary of Test Method
must be used independently, without combining values in any
4.1 The sample roll of tape is placed on a free-turning
way.
spindle a specified distance above a horizontal plane.Astrip of
1.3 This standard does not purport to address all of the
tape is drawn from the roll the distance to the plane at a
safety concerns, if any, associated with its use. It is the
specified rate and released. Any subsequent curling, twisting,
responsibility of the user of this standard to establish appro-
or tubing of the strip is observed and measured.
priate safety, health, and environmental practices and deter-
5. Significance and Use
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
5.1 Thistestmethodwillprovideinformationontherelative
dance with internationally recognized principles on standard-
tendency of tapes to curl, twist, or form into a tube with
ization established in the Decision on Principles for the
touching edges. The amount of each is a predictor of the
Development of International Standards, Guides and Recom-
difficultyonemightexperienceinhandlingstripsoftapeofany
mendations issued by the World Trade Organization Technical
length during their application.
Barriers to Trade (TBT) Committee.
5.2 There are several causes for variation in the extent or
degree of these characteristics and may vary themselves within
2. Referenced Documents
a production lot of tape. Therefore, it is essential to use an
2.1 ASTM Standards:
acceptedsamplingplan(seeSection7)whenitisdesiredtouse
D996 Terminology of Packaging and Distribution Environ-
this test method to compare two types of tape for acceptance
ments
sampling purposes.
D3715/D3715M Practice for QualityAssurance of Pressure-
6. Apparatus
Sensitive Tapes
D4332 Practice for Conditioning Containers, Packages, or 3
6.1 Free-Turning Spindle, sized to fit snugly inside the
Packaging Components for Testing
sample tape core, with its axis firmly supported horizontally
and adjustable in height directly above a horizontal platform.
There should be no obstructions in the path between the
This test method is under the jurisdiction of ASTM Committee D10 on
platform and the spindle.
Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and
NOTE 1—The horizontal platform can be a bench top or the floor.
Labels.
Current edition approved Oct. 1, 2020. Published October 2020. Originally
approved in 1979. Last previous edition approved in 2012 as D3813/
D3813M – 98 (2012). DOI: 10.1520/D3813_D3813M-98R20. The sole source of supply of the apparatus known to the committee at this time
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D3813/D3813M − 98 (2020)
7. Sampling 10.4.2 Measure the Twist of the Tape—Project an imaginary
line representing the end of the tab onto the horizontal
7.1 Acceptance Sampling—Sampling shall be in accordance
platform. This is don
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