Unverified88% confidenceDecision RuleTime unknown
宣称遮光率≥99%（全遮光）的窗帘必须选择涤纶+黑丝三层编织工艺，普通涂层布多次拉扯后涂层脱落遮光率会掉到80%以下
1
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88%
Confidence
Long-term
Relevance
-
First Seen
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Unverified真正的高遮光靠面料本身密织+黑丝涂层实现，而非颜色深浅。选购时应把面料对着强光看是否透光，深色但薄的窗帘可能仅遮光70%，浅色三层复合布反而能达99%87% similarUnverified浅色窗帘要遮光又保持浅色外观，选带白色遮光涂层背衬（三层复合）或加装独立遮光衬里，遮光率可达90%以上而正面仍是浅米/浅灰色；仅靠加厚面料的浅色布遮光率通常不足60%87% similarUnverified全遮光卷帘需选择涂层（涂银/涂黑）或三层复合面料，普通高克重织物即使标称'全遮光'透光率仍达5%-15%，无法做到卧室影音级遮光86% similarUnverified真正遮光靠的是布料背面的黑丝或涂层，'三层编织无涂层'的遮光布克重需≥260g/㎡才能达到90%以上遮光，纯色纺织无涂层布几乎无法全遮光86% similarUnverified遮光布应选'涂层遮光布（黑胶/银胶）'而非纯织物，纯织物遮光率仅60-70%，涂层遮光布可达90%以上，判断方法是对光观察是否透亮86% similar
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