ISO 5999:2013规定了聚醚型柔性承重聚氨酯泡沫的要求。 ISO 5999:2013适用于以块状、片状和条状、模制和装配形状制造的软质聚氨酯多孔材料，以及作为重组材料制造的软质聚氨酯多孔材料，通常用于承重应用，但不包括地毯衬垫和衬垫。因此，它主要与用于舒适缓冲目的的聚氨酯泡沫的质量有关。

ISO 5999:2013 specifies requirements for flexible load-bearing polyurethane foam of the polyether type. ISO 5999:2013 is applicable to flexible polyurethane cellular materials manufactured in block, sheet and strip form, in moulded and fabricated shapes, and as reconstituted material, used for load-bearing applications in general, but excluding carpet backing and underlay. It, thus, primarily relates to the quality of polyurethane foam used for comfort cushioning purposes.