1、Designation:D786014Standard Test Methods forMeasurement of Torque Retention for Child Resistant andNon-Child Resistant Packages with Continuous ThreadClosures Using Automated Torque Testing Equipment1This standard is issued under the fixed designation D7860;the number immediately following the desig
2、nation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods evaluate the torque
3、 retention ofcontinuous thread closures on containers with matchingfinishes,for predetermined environmental conditions overtime.Methods are defined for both Type I,style“A”pushdown and turn Type II2child resistant and non child resistanttype closures.1.2 The values stated in either SI units or inch-
4、pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.NOTE1The SI unit system is the recommend
5、ed system.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Refere
6、nced Documents2.1 ASTM Standards:3D996 Terminology of Packaging and Distribution Environ-mentsD3198 Test Method for Application and Removal Torque ofThreaded or Lug-Style ClosuresD3474 Practice for Calibration and Use of Torque MetersUsed in Packaging ApplicationsD3475 Classification of Child-Resist
7、ant PackagesD4169 Practice for Performance Testing of Shipping Con-tainers and SystemsD4332 Practice for Conditioning Containers,Packages,orPackaging Components for TestingD7386 Practice for Performance Testing of Packages forSingle Parcel Delivery SystemsE691 Practice for Conducting an Interlaborat
8、ory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions:3.1.1 For definitions of general packaging and distributionterms,see Terminology D996.3.1.2 For definitions of application torque and removaltorque,see Test Method D3198.3.1.3 For Definitions regarding conditioning,see
9、Terminol-ogy E41.3.2 Definitions of Terms Specific to This Standard:3.2.1 dry torquedry torque is defined as applying torque inthe absence of lubricant(i.e.product from the container orfilling operation)on the threads.3.2.2 immediate removal torqueremoval torque that ismeasured at a stated interval,
10、from 1 to 5 min after closureapplication.3.2.3 torque retentiona comparison between removaltorque at the end of a test period and a predeterminedimmediate removal torque.4.Summary of Test Methods4.1 Test Method A:Static EvaluationAt predeterminedtime intervals,the removal torques of representative s
11、amples ofa container/continuous thread closure system,previouslystored at various environmental conditions,are measured.4.2 Test Method B:Dynamic EvaluationPractices D4169and D7386 are used to develop a uniform system of evaluatingthe ability of primary packages,in the shipping units,towithstand the
12、 distribution environment.At the end of prede-termined distribution cycles,the removal torques of represen-tative samples of a container/continuous thread closure systemare measured.1These test methods are under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of S
13、ubcommittee D10.32 on Consumer,Pharmaceutical,Medical,and Child Resistant Packaging.Current edition approved Oct.1,2014.Published November 2014.DOI:10.1520/D7860-14.2For classification of child resistant styles,see ASTM D3475 Standard Classi-fication of Child-Resistant Closures.3For referenced ASTM
14、standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 194
15、28-2959.United States1 5.Significance and Use5.1 This test method allows for the measurement of thetorque retention properties of container/continuous thread clo-sure systems of various designs,materials,and manufacture,and is suitable for package development and engineeringevaluation.5.2 Each test
16、method can be used for the evaluation of nonchild resistant container/continuous thread closure systemsunder controlled conditions such as when the applicationtorque is known and the applied downward force to the closureis zero or for Type I,style“A”push down and turn childresistant container/continuous thread closure systems undercontrolled conditions such as when the application torque andthe applied downward force to the closure is known.5.3 This test method measures torque retention properti