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Standard Test Method for Determining Water Vapor Transmission Rates Through Nonwoven and Plastic Barriers
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NORM herausgegeben am 1.2.2021
Bezeichnung normen: ASTM D6701-21
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.2.2021
SKU: NS-1018258
Zahl der Seiten: 6
Gewicht ca.: 18 g (0.04 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
flexible barrier materials, nonwovens, plastics, water vapor transmission,, ICS Number Code 59.080.30 (Textile fabrics),83.080.01 (Plastics in general)
Significance and Use | ||||||||||||
5.1?The purpose of this test method is to obtain values for the WVTR of barrier materials. 5.2?WVTR is an important property of materials and can be related to shelf life; product stability, breath-ability, and wearing comfort. 5.3?Data from this test method is suitable as a referee method of testing, provided that the purchaser and seller have agreed on sampling procedures, test conditions, and acceptance criteria. |
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1. Scope | ||||||||||||
1.1?This test method covers a procedure for determining the rate of water vapor transmission ranging between 500 to 100 000 g/(m2?day) through nonwoven and plastic barrier materials. The method is applicable to films, barriers consisting of single or multilayer synthetic or natural polymers, nonwoven fabric, and nonwoven fabrics coated with films up to 3 mm (0.1 in.) in thickness. 1.2?This test method provides for the determination of (1) water vapor transmission rate (WVTR), and (1.3?The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. The acceptable units for WVTR are usually g/(m2?day). 1.4?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. 1.5?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. |
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2. Referenced Documents | ||||||||||||
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