RELATIONSHIP OF WVTR TO WATER VAPOR PRESSURE AS A DETERMINANT IN PREDICTING PACKAGE LIFE,

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Abstract:

A series of water vapor transmission rates were determined for a number of flexible barriers over a range of temperatures and humidities. The results obtained were used to provide a basis for establishing an empirical formula permitting the extrapolation of water vapor transmission rates of permeable barriers for any given temperature and humidity encountered in normal shipment and storage. This relationship provides a more meaningful method of estimating the minimum life of a pack as indicated by correlation with laboratory simulated outdoor exposures. Nomographs based on this formula were developed to estimate minimum pack, maximum WVTR, or quantity of desiccant required. Author

Author(s):
Minuti, D.
Author Organization(s):
NAVAL AIR MATERIAL CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB
Pagination:
0045

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NAEC-AML-2625
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*PACKAGING, *CONTAINERS, PERMEABILITY, WATER VAPOR, VAPOR PRESSURE, MEMBRANES, PLASTICS, PENETRATION, DESICCANTS, NOMOGRAPHS
Field(s)/Group(s):
Containers and Packaging
Report Date:
1967 Jun 30