Accession Number:

AD0658748

Title:

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

Descriptive Note:

Corporate Author:

NAVAL AIR MATERIAL CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB

Personal Author(s):

Report Date:

1967-06-30

Pagination or Media Count:

45.0

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

Subject Categories:

  • Containers and Packaging

Distribution Statement:

APPROVED FOR PUBLIC RELEASE