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ASTM D3968-97(2002)

(Test Method)

Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures

Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures

SCOPE
1.1 This test method covers the measurement of rotational torques of Type IIIA child-resistant closures as a means of monitoring normal functioning of the child-resistant package.
1.2 This test method is not intended to supplant preexisting closure or package specifications or preexisting incoming material test procedures.
1.3 This standard does not purport to address 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-Sep-1997
ICS
55.020 - Packaging and distribution of goods in general
Technical Committee
D10 - Packaging
Current Stage
Ref Project

Relations

Replaces
ASTM D3968-97 - Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures
Effective Date
10-Sep-1997
Replaced By
ASTM D3968-97(2007) - Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures (Withdrawn 2016)
Effective Date
01-Oct-2007

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ASTM D3968-97(2002) - Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant ClosuresASTM D3968-97(2002) - Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures
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ASTM D3968-97(2002) - Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D3968–97 (Reapproved 2002)
Standard Test Method for
Monitoring of Rotational Torque of Type IIIA Child-Resistant
1
Closures
This standard is issued under the fixed designation D 3968; 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 4. Summary of Test Method
4.1 Representative samples of packages with Type IIIA
1.1 This test method covers the measurement of rotational
torques of Type IIIA child-resistant closures as a means of child-resistant closures are evaluated for closure rotational
monitoring normal functioning of the child-resistant package. torques by using an appropriate torque meter.
1.2 This test method is not intended to supplant preexisting
5. Significance and Use
closure or package specifications or preexisting incoming
5.1 The application of this test method provides a means for
material test procedures.
1.3 This standard does not purport to address the safety evaluating one of the variables affecting the ability of the
closure-container system to function as specified.
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and 5.2 Variability in rotational torque measurements is prob-
ably due to the use of the torque meter to measure relatively
health practices and determine the applicability of regulatory
limitations prior to use. small torque values, differences in critical package dimensions,
and the aging of components.
2. Referenced Documents
2
6. Apparatus
2.1 ASTM Standards:
4,5
6.1 Torque Meter —Select a torque meter with a scale
D 3474 Practice for The Calibration and Use of Torque
Meters Used in Packaging Applications having the smallest range that will span the torque range
expected to be measured (for example, usea0to 10-lbf·in.
D 3475 Classification of Child-Resistant Packages
E 105 Practice for Probability Sampling Of Materials torque meter for readings under 10 lbf·in., nota0to25 lbf·in.
torque meter).
E 122 Practice for Calculating Sample Size to Estimate,
With a Specified Tolerable Error, the Average for a
7. Sampling, Test Specimens, and Test Units
Characteristic of a Lot or Process
7.1 Sampling of package specimens for this test method
3. Terminology
shall be in accordance with statistically valid procedures. Refer
3.1 Definition: to Practices E 105 and E 122 for more specific information.
7.2 Use package specimens whose component containers
3.1.1 rotational torque—the moment of force or system of
forces tending to cause rotation of a Type IIIA closure on the and closures are within their respective specifications.
7.3 Usepackagespecimenswithaknownnumberofclosure
finish of its container.
3.2 Description of Term Specific to This Standard: applications.
3
7.4 Use a sufficient number of package specimens for the
3.2.1 Type III child-resistant closure —a reclosable snap
closure requiring an alignment of two points on closure and desired statistical correlation.
container followed by a pushing off of the closure top or lip to
8. Calibration
remove the closure (taken from Classification D 3475).
8.1 Calibrate the torque meter in accordance with Practice
6
D 3474.
1
This test method is under the jurisdiction of ASTM Committee D10 on
Packaging and is the direct responsibility of Subcommittee D10.31 on Child-
Resistant Packaging.
4
Current edition approved Sept. 10, 1997. Published February 1998. Originally Owens-Illinois Torque Meters, available from Secure-Pak, Inc., 4009 Beach-
published as D 3968 – 80. Last previous edition D 3968 – 91. way Blvd., Toledo, OH 43614, or their equivalent, have been found satisfactory for
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or this purpose.
5
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM A digital or automated torque instrument, if used, will have an appropriate
Standards volume information, refer to the standard’s Document Summary page on design and scale capacity for the container/closure system to be evaluated. Torque
the ASTM website. results will be available in either electronic display or print out formats.
3 6
Examples are the Bristol-Myers, Brockway (Celluplastics), Calmar, Plastic Follow calibration procedure of manufacturer if a digital or automated torque
Research, and Stull Closures. instrument is to be used.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D3968–97 (2002)
9. Conditioning 10.3.2 For closures that cannot be rotated through 360°,
measure the
...

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