Unverified82% confidenceDecision RuleTime unknown
儿童防晒衣的UPF值会随反复洗涤、拉伸和氯水浸泡而下降，物理防晒结构（紧密织物）比化学涂层更耐久，泳池氯水环境优先选物理防晒款
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Unverified物理防晒（高密度织物结构）比化学涂层防晒更耐洗，涂层型防晒衣洗涤20-30次后UPF值会明显衰减，儿童衣物洗涤频繁应优先选原纱型/物理防晒87% similarUnverified涤纶+氨纶（锦纶）高密度织物的物理防晒最耐久，水洗数十次UPF不衰减；靠涂层或后整理助剂实现防晒的产品洗5-10次后防护力大幅下降，儿童衣物洗涤频繁应避开86% similarUnverified化学涂层防晒（后整理喷涂）水洗20-30次后UPF会明显衰减，原纱防晒（纤维本身含防紫外线成分如钛白粉）耐洗性更好，婴幼儿高频换洗应优先选原纱型86% similarUnverified防晒面料的UPF值会随反复洗涤和拉伸下降，含氨纶弹力款经多次机洗后防护力衰减更明显，建议手洗、避免暴晒，出现明显透光即应更换84% similarUnverified防晒面料的UPF会随洗涤和拉伸下降，含二氧化钛等物理防晒整理的产品比纯化学涂层耐洗，反复拉伸的运动款优选原纱防晒工艺83% similar
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