Unverified80% confidenceCautionTime unknown
涂层类防晒帽不建议频繁机洗或用力揉搓，涂层随洗涤次数增加会脱落导致UPF值下降，原纱防晒面料则耐水洗且防晒性能稳定
1
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80%
Confidence
Long-term
Relevance
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Unverified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92% similarUnverified化学涂层防晒服不建议高频机洗和暴晒晾干，高温和摩擦会加速涂层脱落导致UPF衰减，应低温手洗、阴干；原纱防晒型可正常机洗90% 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'89% similarUnverified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89% similarUnverified防晒口罩水洗后UPF会衰减，选择标注'50次水洗后UPF仍≥40'或采用原纱防晒（如凉感锦纶+氨纶物理编织遮挡）而非后整理涂层的产品，涂层型洗几次防晒力就明显下降89% similar
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