Industry News

The reason why the tensile strength retention rate (tensile strength after aging/initial tensile strength × 100%) is the core index to measure the aging resistance of spunbond nonwoven fabrics is that it directly reflects the “structural integrity” and “functional viability” of materials under environmental erosion. The core demand of anti-aging is to keep the material stable in long-term use, and the tensile strength is the basis of the bearing mechanical function of spunbonded non-woven fabrics – whether it is the reinforcement of geotechnical engineering, the crack resistance of building envelope, or the wear resistance of outdoor products, it depends on the tensile strength of the material to resist external forces and environmental stresses.

The core difference of anti-aging spunbond non woven fabric testing between China and the United States stems from the positioning and application logic of the standard system. The core frameworks of the two systems are clearly compared:

Chinese National Standards (GB/T): With GB/T 16422.2-2014 (Xenon Arc Lamp Method) and GB/T 46539-2025 (Fluorescent Ultraviolet Lamp Method, implemented in May 2026) as the core, the former is equivalent to ISO 4892-2:2006, while the latter is specifically customized for geosynthetic materials, presenting the overall characteristics of “international integration+adaptation to domestic scenarios”. The standard covers multiple categories of spunbond fabrics such as plastics and geotechnical materials, with testing requirements that balance universality and industry specificity. It has mandatory or recommended effectiveness in the domestic engineering and civil product fields.

A testing report with reference value must first meet the requirements of “qualification compliance”, otherwise even the most beautiful data is meaningless. Core focus on three points:

Laboratory qualifications: Domestic reports must have the CNAS (China National Accreditation Service for Conformity Assessment) certification mark, and export related reports must be supplemented with A2LA (American Association for Accreditation of Laboratories) or ILAC-MRA (International Laboratory Accreditation Cooperation Organization Mutual Recognition Mark). Reports issued by unqualified laboratories may have problems such as data falsification and insufficient equipment accuracy, and cannot be used as a basis for product acceptance.