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Significance and Use
These torque measurements are of value in:
5.1.1 Rating the performance of automatic capping machines,
5.1.2 Measuring any tendency for threaded or lug-style closures to loosen during storage or shipment of the package, and
5.1.3 Measuring the force required to break hard plastic and overturn or “strip” soft plastic and metal closures.
The method may be used to establish performance specifications.
1.1 This test method covers the application with a given torque of a threaded or lug-style closure to a container, and measures the torque required to unscrew the closure from a container.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3474 Practice for Calibration and Use of Torque Meters Used in Packaging Applications
E105 Practice for Probability Sampling of Materials
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process
ICS Number Code 55.040 (Packaging materials and accessories)
ASTM D3198-97(2007), Standard Test Method for Application and Removal Torque of Threaded or Lug-Style Closures, ASTM International, West Conshohocken, PA, 2007, www.astm.orgBack to Top