GB/T 42697-2023: Nonwovens - Test method for porosity

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Scope

This document describes a test method for testing the porosity of nonwoven fabrics by
using the mass-density method and the true volume method.
This document applies to all types of nonwovens except fluffy nonwovens.

Basic Data

Standard ID	GB/T 42697-2023 (GB/T42697-2023)
Description (Translated English)	Nonwovens - Test method for porosity
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.30
Word Count Estimation	8,820
Date of Issue	2023-05-23
Date of Implementation	2023-12-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration