ASTM D3470-97

Standard Test Method for Measurement of Removal Lug Strippage of Type IIA Child-Resistant Closures

SCOPE
1.1 This test method covers the determination of the force required to cause a downward-force-while-turning lug-finish closure to be rotated across the container finish lugs (strippage) without downward force being applied to the closure (Type IIA closures).
1.2 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: 31-Dec-1996
• Technical Committee: D10 - Packaging

Relations

• Replaced By: ASTM D3470-97(2002) - Standard Test Method for Measurement of Removal Lug Strippage of Type IIA Child-Resistant Closures
• Effective Date: 10-Apr-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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 3470 – 97
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
Measurement of Removal Lug Strippage of Type IIA Child-
1
Resistant Closures
This standard is issued under the fixed designation D 3470; 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 5. Significance and Use
1.1 This test method covers the determination of the force 5.1 This test method may be used as a standard test in the
required to cause a downward-force-while-turning lug-finish comparison of a given size and design lug-style child-resistant
closure to be rotated across the container finish lugs (strippage) closure to manufacturer specifications, and in the comparison
without downward force being applied to the closure (Type IIA of similar closures of differing materials for determining
closures). strippage.
1.2 This standard does not purport to address all of the 5.2 This test method may be used as a standard test to
safety concerns, if any, associated with its use. It is the evaluate the continued effectiveness of the closure for child
responsibility of the user of this standard to establish appro- resistance and adult opening and reclosing throughout the
priate safety and health practices and determine the applica- expected use and shelf life of the package.
bility of regulatory limitations prior to use.
6. Apparatus
3,4
2. Referenced Documents
6.1 Torque-Measuring Device, having a measurement
2.1 ASTM Standards:
range consistent with the torque values to be measured, that
D 3474 Practice for The Calibration and Use of Torque will securely hold the capped container.
2
Meters Used in Packaging Applications
6.2 Gripping Device (Optional), that will effectively grip
2
D 3475 Classification of Child-Resistant Packages the closure perpendicular to the vertical axis of the container
without the use of vertical or radial forces, and that will not
3. Terminology
contact any portion of the container (Fig. 1).
3.1 Definitions:
7. Sampling
3.1.1 type IIA child-resistant closure—a lug finish closure
requiring a random push down while turning. (See Classifica-
7.1 Randomly select sufficient samples to ensure reproduc-
tion D 3475.) ibility of results from the lot being inspected.
3.2 Definitions of Terms Specific to This Standard:
8. Test Specimens
3.2.1 strippage torque—the moment of force which is
required to produce rotation of the closure over the container 8.1 Examine closure samples and containers, to be vehicles
lugs while exerting no downward force. for this test, to determine compliance with the manufacturer’s
dimensional and material specifications.
4. Summary of Test Method
8.2 Prepare test specimens by assembling the closure to the
4.1 This test method consists of securing a capped container
appropriate container by pressing downward and turning the
(after suitable preconditioning) in a torque-measuring device closure so as to reduce or eliminate initial closure lug wear.
and rotating the closure, using mechanical or nonmechanical
9. Calibration
aid, to determine the torque needed to rotate the closure across
the container lugs. No downward force is applied. 9.1 Calibrate the torque meter in accordance with Practice
4.2 Using sufficient sampling, the average strippage force D 3474.
and the range are determined for a given lot of samples. Torque
10. Conditioning
measurements are in units of pound-force-inch or newton-
metre. 10.1 If special conditions are not required, store the unas-
1 3
This test method is under the jurisdiction of ASTM Committee D-10 on
Owens-Illinois torque meter, or its equivalent, has been found satisfactory for
Packaging and is the direct responsibility of Subcommittee D10.31 on Child
this test method. Owens-Illinois torque testers are available from Secure-Pak, Inc.,
Resistant Packaging.
4009 Beechway Blvd., Toledo, OH 43614.
4
Current edition approved April 10, 1997. Published June 1997. Originally
A digital or automated torque instrument, if used, will have an appropriate
published as D 3470 – 76. Last previous edition D 3470 – 89.
design and scale capacity for the container/closure system to be evaluated. Torque
2
Annual Book of ASTM Standards, Vol 15.09.
results will be available in either electronic display or printout formats.
1

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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.¬
D 3470
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