GB/T 22881-2008 "Paper and board—Determination of roughness/smoothness (air leak methods)—General method" specifies the basic requirements and operating procedures for determining the roughness (smoothness) of paper and board using the air leak method. It is applicable to all types of paper and board. The method assesses the degree of roughness or smoothness by measuring the amount of air leakage through the gap between the test specimen and the test head under a certain pressure. It clarifies specimen handling, instrument calibration, and result calculation methods to ensure comparability of test results across different laboratories.
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 |
