Unverified88% confidenceDecision RuleTime unknown
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%
1
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88%
Confidence
Long-term
Relevance
-
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Unverified真正全遮光靠的是'黑丝'涂层或三层机织黑纱夹层，而非单纯颜色深浅——浅色窗帘只要含黑丝层也能全遮光；判断标准是把面料贴眼强光照射看是否透光，而非看克重或颜色91% similarUnverified涂层遮光布（背面白色/黑色胶层）遮光率高但不透气、易折痕开裂；提花三层编织布遮光率同样可达99%且垂感透气更好，长期使用优选后者89% 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89% 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89% similarUnverified深色遮光布遮光率天然高于浅色，白色/米色遮光布必须依靠中间涂层或黑丝层才能全遮光，选购浅色全遮光帘时应确认是否为三层复合结构87% similar
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