TAPPI T 464 om-12 (R2022)

Water Vapor Transmission Rate of Paper and Paperboard at High Temperature and Humidity

standard by Technical Association of the Pulp and Paper Industry , 2012

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Full Description

TAPPI T 464 om-12 (R2018) is for the gravimetric determination of the water vapor transmission rate (WVTR) of sheet materials at 37.8 ° C (100 ° F) with an atmosphere of 90% RH on one side and a desiccant on the other.

It is generally suitable for any material up to 3 mm (1/8 in.) thick, although it may be used with caution for thicker materials if the edges of the specimen are completely sealed.

For testing at other conditions see TAPPI T 448 Water Vapor Transmission Rate of Paper and Paperboard at 23 ° C (73 ° F) and at 50% RH.

This test can be used for both creased and uncreased specimens. See TAPPI T 465 Static Creasing of Paper for WVT Tests or TAPPI UM 590 Creasing of Paperboard for Water Vapor Transmission Rate (WVTR) Testing.

Product Details

Published:: 2012
ANSI:: ANSI Approved
Number of Pages:: 5
File Size:: 1 file , 310 KB
Redline File Size:: 2 files , 670 KB
Note:: This product is unavailable in Ukraine, Russia, Belarus