Unverified85% confidenceDecision RuleTime unknown
遮光率标注需区分'防紫外线'与'物理遮光'：网纱型遮阳帘UPF≥50+可阻挡99%紫外线，但透光可见光仍强；纳米镀铝/双层遮光布才能实现85%以上物理遮光挡住直射刺眼阳光
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85%
Confidence
Long-term
Relevance
-
First Seen
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Unverified遮光率≥90%的深色网纱能阻挡大部分可见光，配合UPF50+防紫外线标识才能有效防晒；单纯遮光不防紫外线的产品实际护眼效果有限90% similarUnverified网纱UPF50+主打防紫外线与透气观察，但对强光眩光的物理遮挡不如全遮光布料85% similarUnverified网纱材质遮光率有限（约60%），强烈日晒下防紫外线和隔热效果不如全遮光款84% similarUnverified看防晒能力认准UPF50+标识，配合聚酯纤维本身的紫外线遮蔽率，实测阻挡98%以上UV；仅靠面料厚度不代表防晒，浅色薄款若无UPF认证紫外线可穿透84% similarUnverified遮阳棚布UPF≥50+才能有效阻挡紫外线，普通牛津布仅遮光不防晒，长时间照射下棚内地面温度仍会升高，需选带银胶或聚酯涂层的面料82% similar
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