ASTM-F1249 Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor

ASTM-F1249 - 2020 EDITION - CURRENT
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Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor
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Scope

1.1 This test method covers a procedure for determining the rate of water vapor transmission through flexible barrier materials. The method is applicable to sheets and films up to 3 mm (0.1 in.) in thickness, consisting of single or multilayer synthetic or natural polymers and foils, including coated materials. It provides for the determination of (1 ) water vapor transmission rate (WVTR), (2) the permeance of the film to water vapor, and (3) for homogeneous materials, water vapor permeability coefficient.

Note 1—Values for water vapor permeance and water vapor permeability must be used with caution. The inverse relationship of WVTR to thickness and the direct relationship of WVTR to the partial pressure differential of water vapor may not always apply.

1.2 This standard does not purport to address all of the safety problems, 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.

Keywords

diffusion cell apparatus; flexible barrier materials; infrared (IR) analysis; plastic sheet and film; polymers; referee methods; water vapor transmission (WVT)-permeability; water vapor transmission rate through plastic film/sheeting (up to 3 mm; (0.1 in.)), using modulated infrared sensor; ICS Number Code 83.140.10 (Films and sheets)

To find similar documents by ASTM Volume:

15.10 (Packaging; Flexible Barrier Packaging)

To find similar documents by classification:

83.140.10 (Films and sheets Including plates)

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Document Number

ASTM-F1249-20

Revision Level

2020 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Aug. 3, 2020

Document Type

Test Method

Page Count

6 pages

Committee Number

F02.30