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1.1 These test methods cover the procedure for determining the minimum burst strength of a seal placed around the perimeter of a flexible package as it is internally pressurized and enclosed within restraining plates.
1.2 The test methods described herein are functionally similar to Test Methods F 1140 with the exception of the use of restraining plates. Test Methods F 1140 describes methods of burst testing that do not include the use of restraining plates and are suitable to determine a packages general ability to withstand pressurization stresses. Under Test Methods F 1140 the stresses are not distributed uniformly to all areas of the package seal. Under unrestrained conditions the stress on the package is highest at the middle of the pouch where it inflates to the packages maximum diameter; therefore, Test Methods F 1140 may not reliably detect the weakest area of the seal.
1.3 The burst test internally and increasingly pressurizes a package until an area of the package seal around the perimeter "bursts" open in response to pressurization. By placing the package within restraining plates during pressurization, the dimensional stability of the package is maintained in a manner that results in stresses applied more uniformly along the perimeter of the package, where seals are normally placed. This allows the test to have a higher probability of detecting the weakest area of the seal and provide a measurement of the pressure required to "burst" open the package.
1.4 This test only applies to flexible packages with seals placed around the perimeter of a flexible package (often referred to as a pouch). In particular it is intended as applicable to packages with seals that have a peelable seal feature (peeled open by end user to remove contents of package).
1.4.1 Porous barrier materials' failure to reach adequate pressure to burst the package seals may be due to insufficient volume flow. See Appendix X4 for information.
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.
D1898 Practice for Sampling of Plastics
D4332 Practice for Conditioning Containers, Packages, or Packaging Components for Testing
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
F88 Test Method for Seal Strength of Flexible Barrier Materials
F1140 Test Methods for Internal Pressurization Failure Resistance of Unrestrained Packages
F1327 Terminology Relating to Barrier Materials for Medical Packaging
ICS Number Code 55.040 (Packaging materials and accessories)
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ASTM F2054-07, Standard Test Method for Burst Testing of Flexible Package Seals Using Internal Air Pressurization Within Restraining Plates, ASTM International, West Conshohocken, PA, 2007, www.astm.orgBack to Top