GB/T 22901-2008 "Paper and board — Determination of air permeance (medium range) — General method" specifies the method for determining the air permeance of paper and board within a specified medium range. It is applicable to paper and board with air permeance falling within a specific medium numerical interval, but not suitable for products with rough surfaces that are difficult to clamp, such as crepe paper and corrugated board. The standard clarifies the technical requirements and operational procedures for testing instruments. Air permeance is calculated by measuring the rate of air passing through the sample, ensuring the accuracy of test results for paper with medium air permeability.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Y30 | ICS | 85.010 |
| Release Date | 2008-12-30 00:00:00 | Implementation Date | 2009-09-01 00:00:00 |
