Unverified85% confidenceDecision RuleTime unknown
涤纶/尼龙原纱型防晒(如凉感纤维织入)水洗50次后防晒不衰减；后整理涂层型防晒衣水洗20-30次后UPF明显下降，长期使用选原纱型
1
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85%
Confidence
Long-term
Relevance
-
First Seen
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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94% similarUnverified涂层类防晒口罩水洗后UPF值会逐渐衰减，一般30-50次水洗后防晒力明显下降；纤维本征型（如高密涤纶、原液着色纱）耐洗性好，注重耐用选纤维型93% 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93% 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93% similarUnverified看重实测防晒的选原纱型（把防晒剂融入纤维），洗涤50次后仍保持UPF50+；后整理型（表面涂层）洗涤20-30次后防晒力显著衰减92% similar
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