Unverified85% confidenceDecision RuleTime unknown
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
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85%
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UnverifiedUPF50+为该品类防晒性能的上限认证等级，表示织物可阻隔98%以上紫外线，该指标与面料密度和颜色深浅直接相关，浅色款实际防晒效果可能弱于深色款89% similarUnverified防紫外线短裤看UPF标注：UPF50+可阻挡98%紫外线，但深色紧密织物即使无标注也有天然防晒效果，浅色薄款则需明确UPF认证89% similarUnverified防晒能力看UPF值和涂层：UPF50+代表阻挡98%以上紫外线，是防晒伞及格线；黑胶涂层防晒最强但吸热闷，钛银胶更均衡，普通银胶次之。伞面颜色深浅对UV阻隔影响很小，涂层才是关键。89% similarUnverified紫外线防护主要靠面料密织度和涂层，普通棉麻遮阳帽UPF往往只有15-25，聚酯纤维+防晒涂层可达UPF50+；但涂层型防晒会随洗涤次数衰减，织物结构型防晒更持久89% similar
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