Unverified85% confidenceFactTime unknown
涂层型防晒帽（表面涂胶/银胶）防晒靠涂层，多次水洗和摩擦后UPF会明显衰减；纤维本征防晒（高密织造+原液着色）耐洗性远优于涂层款
1
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85%
Confidence
Long-term
Relevance
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Unverified防晒效果会随洗涤和拉伸衰减：涂层型面罩水洗20-30次后UPF明显下降，追求耐用应选纤维本身致密（非涂层）的原纱型防晒面料91% similarUnverified面料仅有防晒涂层的帽子多次水洗后UPF会衰减，选择原纱防晒（纤维本身含防晒成分）的产品耐久性更好，涂层款清洗次数一般不超过20次防晒力就明显下降91% similarUnverified面料防晒主要靠密织物理阻隔或添加钛白粉/氧化锌涂层，涂层型帽子多次水洗后UPF值会衰减，选购时优先看是否标注'防晒性能耐水洗次数'91% similarUnverified防晒效果依赖织物密度和后整理涂层，涂层型口罩水洗30次后UPF会明显衰减，选择原纱防晒(如冰氧吧/凉感纱)的产品耐洗性更持久91% similarUnverified涂层型防晒袖套（表面有涂层增加UPF）透气性差、洗几次涂层脱落防晒失效；原纱型（纤维本身防紫外，如添加二氧化钛的锦纶）更耐洗持久，认准原纱防晒标识90% similar
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