Publication 2 - Packaging for Mailing - Postal Explorer - USPS.com

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Package TestingAppendix AVibration TestThe table below indicates the steps to perform a Fixed DisplacementVibration Test.Step Action1 Put the packaged-product on the vibration table so that face 3 rests on theplatform.2 Start the vibration system to vibrate at 1.0 inches (25 mm) total displacementat the machine’s lowest frequency.3 Maintain a fixed displacement at 1 inch (25 mm) and slowly increase thefrequency (speed) of the vibration table until the packaged-product begins tomomentarily leave the surface of the platform.4 Hold the vibration frequency to that determined in Step 3.5 Can a metal shim be intermittently moved between the bottom of the longestdimension of the packaged-product and the surface of the platform? If Yes, hold that frequency and then continue to next Step. If No, then increase the frequency until the requirement of Step 5 is metand hold that vibration frequency.6 Determine the test duration in minutes using the formula indicated in theBefore You Begin Block and the CPM or Hz frequency identified in Step 5.7 Begin the vibration duration.8 Are you using a vertical linear motion on the vibration system? If Yes, then go to Step 12. If No, then continue with the next Step.9 Stop the vibration test halfway throught the vibration duration and perform theappropriate action as indicated below: IF a single 90 horizontal rotation is possible, THEN perform a horizontalrotation of 90 as the specimen rests on the platform. IF a single 90 horizontal rotation is not practical because of the size ofthe packaged-product or the stability of the packaged-product, THEN performa horizontal rotation of 180 as the specimen tests on the platform.10 Start the vibration system and continue the vibration test at the frequencyused in Step 7.11 Can a metal shim be intermittently moved between the bottom of the longestdimension of the packaged-product and the surface of the platform? If Yes, then continue to next Step. If No, then slowly increase the frequency until the requirement of Step 11is met.12 Complete vibration duration.13 Inspection of the packaged-product for visible damage is allowed, providedinspection does not alter, in any way, the current condition of the package orthe condition or position of the product(s).14 Vibration testing is now complete. Go to the Shock Test Block.Publication 2, January 200245
Appendix APackage TestingBefore You Begin Shock TestingThe test drop height varies with the weight of the packaged-product. Find theweight of the packaged-product in the following chart to determine a dropheight or an equivalent impact velocity to be used for a substituted drop:Packaged-Product Weight Drop Height Impact VelocityEqual to or greater than But Less than Free Fall Incline or Horizontallb kg lb kg In. mm ft/s m/s0 0 21 10 30 760 13 3.921 10 41 19 24 610 11 3.441 19 61 28 18 460 10 3.061 28 100 45 12 310 8.0 2.5100 45 150 68 8 200 6.6 2.0The test method requires the packaged-product to be dropped in severaldifferent package orientations.A drop test must be performed in all required orientations where dropping thepackaged-product is practical.If dropping in a required orientation is not practical an equivalent incline orhorizontal test can be substituted for that orientation.When using impact velocity, if any test in a Test Sequence is below therequired minimum level, that sequence event must be repeated until the testimpact velocity meets the minimum.46 Publication 2, January 2002
Page 2: Packaging for MailingPublication 2
Page 5 and 6: Contents3 Cushioning . . . . . . .
Page 7 and 8: AppendixesAppendixesA Package Testi
Page 9 and 10: 1-3 Packaging Adequacy1-3 Load Type
Page 11 and 12: 1-4.3.2 Packaging Adequacy1-4.3.2 E
Page 13 and 14: Packaging AdequacyThis page intenti
Page 15 and 16: 2-2.3 Containers2-2.3 Plastic Bags
Page 17 and 18: 2-3.3 Containers2-3.3 Making BoxesI
Page 19 and 20: 2-5.4 Containers2-5.4 Odd-Shaped It
Page 21 and 22: 3-4 Cushioning3-4 Several and Fragi
Page 23 and 24: 4-3 Closing, Sealing, and Reinforci
Page 25 and 26: 4-5.3 Closing, Sealing, and Reinfor
Page 27 and 28: 5-1.3 Marking5-1.3 Address Correcti
Page 29 and 30: 5-2.4 Marking5-2.4 Other MarkingsIf
Page 31 and 32: 6-2.2 Bulk Mail Center StandardsThe
Page 33 and 34: 6-2.6.2 Bulk Mail Center Standards6
Page 35 and 36: 6-4 Bulk Mail Center Standards6-4 S
Page 37 and 38: 6-4.6.2 Bulk Mail Center Standardsw
Page 39 and 40: 6-6.2.2 Bulk Mail Center Standards6
Page 41 and 42: Bulk Mail Center StandardsThis page
Page 43 and 44: 7-2.2 Hazardous Materials7-2.2 Mail
Page 45 and 46: Appendix APackage TestingThese test
Page 47 and 48: Appendix APackage TestingScopeTest
Page 49 and 50: Appendix APackage TestingEquipment
Page 51: Appendix APackage TestingPackaged-P
Page 55 and 56: Appendix APackage TestingReportBefo
Page 57 and 58: Appendix APackage TestingThe follow
Page 59 and 60: Appendix APackage TestingPackaged-P
Page 61 and 62: Appendix APackage TestingThis page
Page 63: Appendix BRates and Classification

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