Standard Test Method for Curling and Twisting on Unwinding of Pressure-Sensitive Tapes

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.

General Information

Status
Historical
Publication Date
09-Oct-1998
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM D3813/D3813M-98 - Standard Test Method for Curling and Twisting on Unwinding of Pressure-Sensitive Tapes
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 3813/D 3813M – 98
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Curling, Twisting, and Tubing on Unwind of Pressure-
1
Sensitive Tapes
This standard is issued under the fixed designation D 3813/D 3813M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope or tubing of the strip is observed and measured.
1.1 This test method provides one procedure for determin-
5. Significance and Use
ing the extent of curling, the degree of twisting, and tendency
5.1 This test method will provide information on the relative
to form a tube resulting from unwinding of the tape from its
tendency of tapes to curl, twist, or form into a tube with
roll.
touching edges. The amount of each is a predictor of the
1.2 The values stated in either SI or inch-pound units are to
difficulty one might experience in handling strips of tape of any
be regarded separately as standard. The values stated in each
length during their application.
system may not be exact equivalents; therefore, each system
5.2 There are several causes for variation in the extent or
must be used independently, without combining values in any
degree of these characteristics and may vary themselves within
way.
a production lot of tape. Therefore, it is essential to use an
1.3 This standard does not purport to address all of the
accepted sampling plan (see Section 7) when it is desired to use
safety concerns, if any, associated with its use. It is the
this test method to compare two types of tape for acceptance
responsibility of the user of this standard to establish appro-
sampling purposes.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Apparatus
4
2. Referenced Documents 6.1 Free-Turning Spindle, sized to fit snugly inside the
sample tape core, with its axis firmly supported horizontally
2.1 ASTM Standards:
and adjustable in height directly above a horizontal platform.
D 996 Terminology of Packaging and Distribution Environ-
2 There should be no obstructions in the path between the
ments
platform and the spindle.
D 3715/D 3715M Practice for Quality Assurance of
2
Pressure-Sensitive Tapes
NOTE 1—The horizontal platform can be a bench top or the floor.
D 4332 Practice for Conditioning Containers, Packages, or
2
7. Sampling
Packaging Components for Testing
E 122 Practice for Choice of Sample Size to Estimate a
7.1 Acceptance Sampling—Sampling shall be in accordance
3
Measure of Quality for a Lot or Process with Practice D 3715/D 3715M.
7.2 Sampling for Other Purposes—The sampling and the
3. Terminology
number of test specimens depends on the purpose of the
3.1 Definitions—General terms used in this test method are
testing. Practice E 122 is recommended. It is common to test at
defined in Terminology D 996.
least five specimens of a particular tape. Test specimens should
be taken from several rolls of tape and whenever possible,
4. Summary of Test Method
among several production runs of tape. Strong conclusions
4.1 The sample roll of tape is placed on a free-turning
about a specific property of a tape cannot be based on test
spindle a specified distance above a horizontal plane. A strip of
results on a single unit (roll) of a product.
tape is drawn from the roll the distance to the plane at a
8. Test Specimens
specified rate and released. Any subsequent curling, twisting,
8.1 The test specimen shall be the strip of tape unwound
from the originally wound sample roll during performance in
1
This test method is under the jurisdiction of ASTM Committee D-10 on
accordance with Section 10.
Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and
Labels.
8.1.1 No restrictions in the width of the sample (or the
Current edition approved Oct. 10, 1998. Published January 1999. Originally
e1
published as D 3813 – 79. Last previous edition D 3813/ D 3813M-96 .
2 4
Annual Book of ASTM Standards, Vol 15.09. Available from Chemsultants International, 9349 Hamilton Dr., Mentor, OH
3
Annual Book of ASTM Standards, Vol 14.02. 44061–1118.
1

---------------------- Page: 1 ----------------------
NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬replaced¬by¬a¬new¬version¬or¬discontinued.¬
Contact¬ASTM¬International¬(www.astm.org)¬for¬the¬latest¬information.¬
D 3813/D 3813M
specimen) are made except a practical limitation due to the 10.4.2.1 To find Angle B, the actual t
...

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