GB/T 8941-2013 "Paper and board — Measurement of specular gloss" specifies the method for determining the specular gloss of paper and board. It is applicable to all types of paper and board and is identical to ISO 8254-1:1999. A gloss meter is used to measure the specular reflectance of the sample at incident angles of 20°, 45°, and 75°, and the gloss value is calculated with reference to a standard black glass plate. The standard specifies requirements for instrument calibration, sample preparation, and selection of test points. At least five valid measurements should be taken in both the machine direction and cross direction, and the results are averaged to ensure accurate and consistent gloss measurement.
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 | 2013-12-17 00:00:00 | Implementation Date | 2014-12-01 00:00:00 |
