UPF值是指紫外线防护系数(UltraViolet Protection Factor),用来衡量具有紫外线防护功能的纺织品在阳光光谱和人体皮肤敏感度方面的表现。简单来说,UPF值越高,衣物对紫外线的遮挡作用越强,穿着者暴露在阳光下的时间也就越少。然而,尽管UPF值相差甚远,但实际上它们在防紫外线性能上的提升并不明显。 根据国家标准GB/T ...
UPF是英文Ultraviolet ProtectionFactor的简称,即紫外线防护系数。 这个定义比较抽象,我们可以这样理解UPF的物理意义,比如UPF值为50,就说明有1/50的紫外线可以透过织物。 UPF值越高,就说明紫外线的防护效果越好。但国家标准中纺织品的UPF值*高的标识是50+,也就是UPF>50。因为UPF大于50以后,对人体的影响完全可以忽略...
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