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ASTM D7860-14
ASTM D7860-14
The standard ASTM D7860-14 was developed by ASTM International to provide test methods to ensure torque retention measurement of matching container finishes for continuous thread closures—either child resistant (CRC) or non-child resistant (non-CRC). Requires torque-measuring equipment that is automated (as opposed to manually operated as is required in ASTM D2063), which utilizes transducers and must have a programmed (defined) operating rotational velocity. A standard determines the retention of the applied torque of the closures over time, under different environmental and distribution circumstances. As a trusted brand supplier of precision testing equipment, some precision testing equipment can comply with the equipment and method requirements of this standard and provide the corresponding testing automation products.
Significance Retention of torque is an important quality parameter for the food, pharmaceutical, personal care, and domestic chemical applications, among others. Closures that can be lost over time can lead to product leakage and/or contamination, failure of tamper evidence, and child resistance mechanisms that can become ineffective during storage and delivery. ASTM D7860 offers a comprehensive, reproducible system for assessing closure integrity in a variety of real-world storage and distribution scenarios, giving manufacturers a proactive way to identify potential performance risks and certify packaging system reliability before it even reaches consumers. ASTM D7860 encompasses two distinct evaluation methodologies. Test Method A—Static Evaluation—measures the removal torque for the closure containers, which are stored at specified environmental conditions at predetermined time intervals. Test Method B — Dynamic Evaluation — measures removal torques following simulated distribution cycles conducted in accordance with ASTM D4169. Both methods cover Type I CRC (push-down-and-turn style) and Type II lug-style closures, as well as non-CRC continuous thread closures. The standard mandates automated torque meters, which are calibrated and provide digital output and are intended only for non-lubricated thread conditions to provide consistent and comparable test results at different facilities.Scope