Nonwovens - Test methods - Part 4: Determination of tear resistance by the trapezoid procedure (ISO 9073-4:2021); German version EN ISO 9073-4:2021— 14 стр.
Textiles - Test methods for nonwovens - Part 4: Determination of tear resistance (ISO/DIS 9073-4:2020); German and English version prEN ISO 9073-4:2020