ASTM F2338-2009(2013) Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay Method《采用真空衰变法对包装的泄露性进行无损检测的标准试验方法》.pdf
《ASTM F2338-2009(2013) Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay Method《采用真空衰变法对包装的泄露性进行无损检测的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM F2338-2009(2013) Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay Method《采用真空衰变法对包装的泄露性进行无损检测的标准试验方法》.pdf(13页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F2338 09 (Reapproved 2013)Standard Test Method forNondestructive Detection of Leaks in Packages by VacuumDecay Method1This standard is issued under the fixed designation F2338; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, 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 Test PackagesPackages that can be nondestructivelyevaluated by this test method include:1.1.1 Rigid
3、 and semi-rigid non-lidded trays.1.1.2 Trays or cups sealed with porous barrier liddingmaterial.1.1.3 Rigid, nonporous packages.1.1.4 Flexible, nonporous packages.1.2 Leaks DetectedThis test method detects package leaksby measuring the rise in pressure (vacuum loss) in an enclosedevacuated test cham
4、ber containing the test package. Vacuumloss results from leakage of test package headspace gasesand/or volatilization of test package liquid contents located inor near the leak. When testing for leaks that may be partially orcompletely plugged with the packages liquid contents, the testchamber is ev
5、acuated to a pressure below the liquids vapor-ization pressure. All methods require a test chamber to containthe test package and a leak detection system designed with oneor more pressure transducers. Test method sensitivities citedbelow were determined using specific product-package sys-tems select
6、ed for the precision and bias studies summarized inTable 1. Table 1 also lists other examples of relevant product-package systems that can be tested for leakage by vacuumdecay.1.2.1 Trays or Cups (Non-lidded) (Air Leakage)Hole orcrack defects in the wall of the tray/cup of at least 50 m indiameter c
7、an be detected. Nonlidded trays were tested at aTarget Vacuum of 4E4 Pa (400 mbar).1.2.2 Trays Sealed with Porous Barrier Lidding Material(Headspace Gas Leakage)Hole or crack defects in the wallof the tray/cup of at least 100 m in diameter can be detected.Channel defects in the seal area (made using
8、 wires of 125 min diameter) can be detected. Severe seal bonding defects inboth continuous adhesive and dot matrix adhesive packagesystems can be detected. Slightly incomplete dot matrixadhesive bonding defects can also be detected. All porousbarrier lidding material packages were tested at a Target
9、Vacuum of 4E4 Pa (400 mbar). The sensitivity of the test forporous lidded packages is approximately E-2 Pam3s-1using acalibrated volumetric airflow meter.1.2.3 Rigid, Nonporous Packages (Headspace Gas Leak-age) Hole defects of at least 5 m in diameter can bedetected. Plastic bottles with screw caps
10、were tested at a targetvacuum of 5E4 Pa (500 mbar). Using a calibrated volumet-ric airflow meter, the sensitivity of the test is approximatelyE-3.4 Pam3s-1.Air-filled glass syringes were tested at a targetvacuum of 7.5E4 Pa (+250 mbar absolute) and again at atarget vacuum of about +1 mbar absolute.
11、The sensitivity ofboth tests is approximately E-4.1 Pam3s-1using a calibratedvolumetric airflow meter.1.2.4 Rigid, Nonporous Packages (Liquid Leakage)Holedefects of at least 5 m in diameter can be detected. Thisdetection limit was verified using a population of water-filledglass syringes tested at a
12、 target vacuum of about +1 mbarabsolute.1.2.5 Flexible, Nonporous Packages (Gas or Liquid Leak-age) Such packages may also be tested by the vacuum decaymethod. Sensitivity data for flexible packages were not in-cluded in the precision and bias studies, although the use ofvacuum decay for testing suc
13、h packages is well known.1.3 Test ResultsTest results are qualitative (Accept/Reject). Acceptance criteria are established by comparingquantitative baseline vacuum decay measurements obtainedfrom control, non-leaking packages to measurements obtainedusing leaking packages, and to measurements obtain
14、ed with theintroduction of simulated leaks using a calibrated gas flowmeter.1.4 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its
15、 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.1This test method is under the jurisdiction of ASTM Committee F02 on FlexibleBarrier Packaging and is the direct re
16、sponsibility of Subcommittee F02.40 onPackage Integrity.Current edition approved Aug. 1, 2013. Published September 2013. Originallyapproved in 2003. Last previous edition approved in 2009 as F2338 09. DOI:10.1520/F2338-09R13.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
17、hohocken, PA 19428-2959. United States12. Referenced Documents2.1 ASTM Standards:2D996 Terminology of Packaging and Distribution Environ-mentsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF17 Terminology Relating to Flexible Barrier PackagingF1327 Te
18、rminology Relating to Barrier Materials for Medi-cal Packaging (Withdrawn 2007)33. Terminology3.1 DefinitionsFor definitions used in this test method, seeTerminologies D996, F17, and F1327.3.2 Definitions of Terms Specific to This Standard:3.2.1 baseline vacuum decay, nthe extent of vacuumchange wit
19、hin the test chamber over time demonstrated by acontrol, non-leaking package.3.2.2 control, non-leaking packages, n packages withoutdefects and properly sealed or closed according to manufac-turers specifications.3.2.3 flexible, nonporous packages, npackages that sig-nificantly deflect when under va
20、cuum, and are constructed ofmalleable, nonporous materials. Examples include pouches orbags made of polymeric, foil, or laminate films.3.2.4 gas leaks, nleak paths that allow the flow of gasfrom the test package.3.2.5 liquid leaks, nleak paths partially or fully filled withliquid.3.2.6 rigid, nonpor
21、ous packages, npackages that do notsignificantly deflect under vacuum and are constructed of solid,nonporous materials. Examples include plastic bottles withscrew-thread or snap-on closures, glass or plastic vials withelastomeric closures, and glass or plastic syringes.3.2.7 semi-rigid trays or cups
22、, ntrays made of materialthat retain shape upon deflection. For example, thermoformedPETE or PETG trays are considered semi-rigid trays.3.2.8 spotty or mottled seals, nan incomplete adhesivebond made between a package tray or cup and porous liddingmaterial that can be visibly identified by a distinc
23、tive pattern ofdots, spotting or mottling on the tray sealing surface after thelid is removed.3.2.9 volumetric airflow meter, na calibration tool that canbe used to provide an artificial leak of known volumetricairflow rate into the test chamber for verification of instrumentsensitivity. Airflow met
24、ers should be calibrated to NISTstandards. The operational range of the meter should reflect thedesired limit of sensitivity for the intended leak test.3.3 Definitions of Test Cycle and Critical ParametersTermsFor terms and abbreviations relating to the test cycleand the critical parameters for esta
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