GB/T 22921-2008
ActivePaper and board - Determination of water vapour transmission rate of sheet materials - Dynamic sweep and static gas methods
纸和纸板 薄页材料水蒸气透过率的测定 动态气流法和静态气体法
Application Summary AI generated
This standard specifies dynamic sweep and static gas methods for measuring the water vapor transmission rate of paper and board sheet materials. It is applied in quality control and packaging development for products like food wrappers, pharmaceutical packaging, and moisture-sensitive industrial papers. The test methods evaluate barrier performance under controlled humidity and temperature conditions to ensure material suitability for moisture protection.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.