GB/T 2679.2-2015 "Sheet Materials, Determination of Humidity Permeability Weight (Permeable Cup) Method" standard specifies a specific method for determining the Humidity of sheet materials by weight method. The standard applies to sheet materials such as paper, Cardboard, Plastic film, etc. Measurement of the mass of water vapor passing through the material in unit time by using a permeable cup. Humidity permeability is calculated by encapsulating the drying agent to capture the increase in water vapor. The standard also includes a method for determining the Humidity of creases, suitable for evaluating the moisture permeability performance of materials at the crease site. The standard describes in detail the test equipment, sample preparation, test conditions and methods for calculating results to ensure the accuracy and conformity of the assay.
| Status | Active |
|---|---|
| CCS | Y30 | ICS | 85.010 |
| Release Date | 2015-09-11 00:00:00 | Implementation Date | 2016-04-01 00:00:00 |