本文件规定了厚度不超过20mm的软质聚氨酯泡沫塑料的最低要求，该泡沫塑料用于与合适的基材（如无纺布、机织物或针织物）组合，以形成层压板。 规定了三种柔性聚氨酯泡沫: -1型:聚醚； -2类:最小断裂伸长率为200%的聚酯； -3类:最小断裂伸长率为300%的聚酯纤维。

This document specifies the minimum requirements for flexible polyurethane foams up to and including 20 mm thick intended for combination with suitable substrates such as non-woven, woven or knitted fabrics, to form a laminate. Three types of flexible polyurethane foam are specified as follows: — type 1: polyether; — type 2: polyester with minimum elongation at break of 200 %; — type 3: polyester with minimum elongation at break of 300 %.