GB/T 2679.2-2015
Sheet materials.Determination of water vapour trasmission rate.Gravimetric (Dish) method (English Version)

Standard No.: GB/T 2679.2-2015
Language: Chinese, Available in English version
Release Date: 2015
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 2679.2-2015
Replace: GB/T 2679.2-1995

Scope: This standard specifies the method for determining the moisture permeability and crease moisture permeability of thin sheet materials by the gravimetric (moisture permeability cup) method. This standard applies to thin sheet packaging materials that are flat and impede the transmission of water vapor, such as paper, cardboard, plastic film, composite materials of paper and film or metal foil, rubber or plastic coated fabrics, etc. This method is not applicable to films that have been damaged or shrunk significantly due to exposure to hot wax under the test conditions. This method is not recommended for materials with a moisture permeability of less than 1 g/(m² ? 24 h) or a material with a thickness greater than 3 mm.

GB/T 2679.2-2015 Referenced Document

GB/T 10739 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp specimens*， 2023-12-28 Update
GB/T 450 Paper and board.Sampling for testing and identification of machine and cross direction,wire side and felt side

2015 GB/T 2679.2-2015 Sheet materials.Determination of water vapour trasmission rate.Gravimetric (Dish) method
1995 GB/T 2679.2-1995 Paper and board--Determination of water vapour transmission rate (Dish method)