ASTM F1249 - 25
Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor
| Aviso: | Las normas ASTM en lectura se visualizan a través del área de cliente. Los archivos no se pueden descargar |
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| Fecha edición: |
2025-10-01
En Vigor
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| Idiomas disponibles: | Inglés |
| 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. This method is quantitative and has been demonstrated by the enclosed ILS to be effective for measuring materials from 0.052 g ⁄(m2·day) to 26 g ⁄(m2·day). 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 concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
| ICS: | 83.140.10 - Películas y hojas |
| CTN: | F02.10 |
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Otras Relaciones |
Es referenciada por C647 - 19(2025) Es referenciada por D6701 - 24 Es referenciada por C1767M - 21 Es referenciada por C1423 - 21 Es referenciada por C1729 - 21 Es referenciada por F2896 - 23 Es referenciada por F392/F392M - 23 Es referenciada por D6434 - 25 Es referenciada por E1745 - 17(2023) Es referenciada por F3510 - 21 Es referenciada por C1775 - 22 Es referenciada por C1767 - 21 Es referenciada por E398 - 24 Es referenciada por D2103 - 23a Es referenciada por E154/E154M - 08a(2025) Es referenciada por C1729M - 21 Es referenciada por D6577 - 24a Es referenciada por D4635 - 25 Es referenciada por D7407 - 07(2024) Es referenciada por E3127 - 24 |
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