General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 42697-2023
Introduction
Introduction to GB/T 42697-2023 Nonwovens - Determination of Porosity
GB/T 42697-2023 is a Chinese national standard that specifies the test method for determining the porosity of nonwoven fabrics. Porosity is an important property of nonwoven fabrics as it affects their permeability, breathability, and filtration efficiency. This standard provides a reliable and standardized procedure to measure the porosity of nonwoven fabrics.
The test method outlined in GB/T 42697-2023 involves the use of a testing apparatus that measures the air flow through the fabric sample under specific conditions. The porosity is then calculated based on the measured air flow rate and the dimensions of the sample. The standard provides detailed instructions on the preparation of the sample, the setup of the testing apparatus, and the calculation of porosity.
By following the guidelines set out in GB/T 42697-2023, manufacturers, researchers, and quality control personnel can accurately determine the porosity of nonwoven fabrics. This information can be used to assess the performance and suitability of these fabrics for various applications, such as filtration, medical textiles, geotextiles, and automotive textiles.
Overall, GB/T 42697-2023 provides a standardized and reliable method for determining the porosity of nonwoven fabrics. This standard contributes to the development of quality control measures and ensures the consistency and reliability of nonwoven fabric products in China.
GB/T 42697-2023 history
2023GB/T 42697-2023 Test method for porosity of nonwoven fabrics